configure

   1 #!/bin/sh
   2 #
   3 # FFmpeg configure script
   4 #
   5 # Copyright (c) 2000-2002 Fabrice Bellard
   6 # Copyright (c) 2005-2008 Diego Biurrun
   7 # Copyright (c) 2005-2008 Mans Rullgard
   8 #
   9
  10 # Prevent locale nonsense from breaking basic text processing.
  11 LC_ALL=C
  12 export LC_ALL
  13
  14 # make sure we are running under a compatible shell
  15 # try to make this part work with most shells
  16
  17 try_exec(){
  18     echo "Trying shell $1"
  19     type "$1" > /dev/null 2>&1 && exec "$@"
  20 }
  21
  22 unset foo
  23 (: ${foo%%bar}) 2> /dev/null
  24 E1="$?"
  25
  26 (: ${foo?}) 2> /dev/null
  27 E2="$?"
  28
  29 if test "$E1" != 0 || test "$E2" = 0; then
  30     echo "Broken shell detected.  Trying alternatives."
  31     export FF_CONF_EXEC
  32     if test "0$FF_CONF_EXEC" -lt 1; then
  33         FF_CONF_EXEC=1
  34         try_exec bash "$0" "$@"
  35     fi
  36     if test "0$FF_CONF_EXEC" -lt 2; then
  37         FF_CONF_EXEC=2
  38         try_exec ksh "$0" "$@"
  39     fi
  40     if test "0$FF_CONF_EXEC" -lt 3; then
  41         FF_CONF_EXEC=3
  42         try_exec /usr/xpg4/bin/sh "$0" "$@"
  43     fi
  44     echo "No compatible shell script interpreter found."
  45     echo "This configure script requires a POSIX-compatible shell"
  46     echo "such as bash or ksh."
  47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
  48     echo "Instead, install a working POSIX-compatible shell."
  49     echo "Disabling this configure test will create a broken FFmpeg."
  50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
  51         echo "This bash version ($BASH_VERSION) is broken on your platform."
  52         echo "Upgrade to a later version if available."
  53     fi
  54     exit 1
  55 fi
  56
  57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
  58
  59 show_help(){
  60     cat <<EOF
  61 Usage: configure [options]
  62 Options: [defaults in brackets after descriptions]
  63
  64 Help options:
  65   --help                   print this message
  66   --list-decoders          show all available decoders
  67   --list-encoders          show all available encoders
  68   --list-hwaccels          show all available hardware accelerators
  69   --list-demuxers          show all available demuxers
  70   --list-muxers            show all available muxers
  71   --list-parsers           show all available parsers
  72   --list-protocols         show all available protocols
  73   --list-bsfs              show all available bitstream filters
  74   --list-indevs            show all available input devices
  75   --list-outdevs           show all available output devices
  76   --list-filters           show all available filters
  77
  78 Standard options:
  79   --logfile=FILE           log tests and output to FILE [config.log]
  80   --disable-logging        do not log configure debug information
  81   --fatal-warnings         fail if any configure warning is generated
  82   --prefix=PREFIX          install in PREFIX [$prefix]
  83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
  84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
  86   --libdir=DIR             install libs in DIR [PREFIX/lib]
  87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
  88   --incdir=DIR             install includes in DIR [PREFIX/include]
  89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
  90
  91 Licensing options:
  92   --enable-gpl             allow use of GPL code, the resulting libs
  93                            and binaries will be under GPL [no]
  94   --enable-version3        upgrade (L)GPL to version 3 [no]
  95   --enable-nonfree         allow use of nonfree code, the resulting libs
  96                            and binaries will be unredistributable [no]
  97
  98 Configuration options:
  99   --disable-static         do not build static libraries [no]
 100   --enable-shared          build shared libraries [no]
 101   --enable-small           optimize for size instead of speed
 102   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
 103   --enable-gray            enable full grayscale support (slower color)
 104   --disable-swscale-alpha  disable alpha channel support in swscale
 105   --disable-all            disable building components, libraries and programs
 106   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
 107   --enable-incompatible-fork-abi  enable incompatible Libav fork ABI (deprecated) [no]
 108   --enable-raise-major     increase major version numbers in sonames [no]
 109
 110 Program options:
 111   --disable-programs       do not build command line programs
 112   --disable-ffmpeg         disable ffmpeg build
 113   --disable-ffplay         disable ffplay build
 114   --disable-ffprobe        disable ffprobe build
 115   --disable-ffserver       disable ffserver build
 116
 117 Documentation options:
 118   --disable-doc            do not build documentation
 119   --disable-htmlpages      do not build HTML documentation pages
 120   --disable-manpages       do not build man documentation pages
 121   --disable-podpages       do not build POD documentation pages
 122   --disable-txtpages       do not build text documentation pages
 123
 124 Component options:
 125   --disable-avdevice       disable libavdevice build
 126   --disable-avcodec        disable libavcodec build
 127   --disable-avformat       disable libavformat build
 128   --disable-avutil         disable libavutil build
 129   --disable-swresample     disable libswresample build
 130   --disable-swscale        disable libswscale build
 131   --disable-postproc       disable libpostproc build
 132   --disable-avfilter       disable libavfilter build
 133   --enable-avresample      enable libavresample build [no]
 134   --disable-pthreads       disable pthreads [auto]
 135   --disable-w32threads     disable Win32 threads [auto]
 136   --disable-os2threads     disable OS/2 threads [auto]
 137   --disable-network        disable network support [no]
 138   --disable-dct            disable DCT code
 139   --disable-dwt            disable DWT code
 140   --disable-error-resilience disable error resilience code
 141   --disable-lsp            disable LSP code
 142   --disable-lzo            disable LZO decoder code
 143   --disable-mdct           disable MDCT code
 144   --disable-rdft           disable RDFT code
 145   --disable-fft            disable FFT code
 146
 147 Hardware accelerators:
 148   --disable-dxva2          disable DXVA2 code [autodetect]
 149   --disable-vaapi          disable VAAPI code [autodetect]
 150   --enable-vda             enable VDA code
 151   --disable-vdpau          disable VDPAU code [autodetect]
 152
 153 Individual component options:
 154   --disable-everything     disable all components listed below
 155   --disable-encoder=NAME   disable encoder NAME
 156   --enable-encoder=NAME    enable encoder NAME
 157   --disable-encoders       disable all encoders
 158   --disable-decoder=NAME   disable decoder NAME
 159   --enable-decoder=NAME    enable decoder NAME
 160   --disable-decoders       disable all decoders
 161   --disable-hwaccel=NAME   disable hwaccel NAME
 162   --enable-hwaccel=NAME    enable hwaccel NAME
 163   --disable-hwaccels       disable all hwaccels
 164   --disable-muxer=NAME     disable muxer NAME
 165   --enable-muxer=NAME      enable muxer NAME
 166   --disable-muxers         disable all muxers
 167   --disable-demuxer=NAME   disable demuxer NAME
 168   --enable-demuxer=NAME    enable demuxer NAME
 169   --disable-demuxers       disable all demuxers
 170   --enable-parser=NAME     enable parser NAME
 171   --disable-parser=NAME    disable parser NAME
 172   --disable-parsers        disable all parsers
 173   --enable-bsf=NAME        enable bitstream filter NAME
 174   --disable-bsf=NAME       disable bitstream filter NAME
 175   --disable-bsfs           disable all bitstream filters
 176   --enable-protocol=NAME   enable protocol NAME
 177   --disable-protocol=NAME  disable protocol NAME
 178   --disable-protocols      disable all protocols
 179   --enable-indev=NAME      enable input device NAME
 180   --disable-indev=NAME     disable input device NAME
 181   --disable-indevs         disable input devices
 182   --enable-outdev=NAME     enable output device NAME
 183   --disable-outdev=NAME    disable output device NAME
 184   --disable-outdevs        disable output devices
 185   --disable-devices        disable all devices
 186   --enable-filter=NAME     enable filter NAME
 187   --disable-filter=NAME    disable filter NAME
 188   --disable-filters        disable all filters
 189
 190 External library support:
 191   --enable-avisynth        enable reading of AviSynth script files [no]
 192   --disable-bzlib          disable bzlib [autodetect]
 193   --enable-fontconfig      enable fontconfig
 194   --enable-frei0r          enable frei0r video filtering
 195   --enable-gnutls          enable gnutls [no]
 196   --disable-iconv          disable iconv [autodetect]
 197   --enable-ladspa          enable LADSPA audio filtering
 198   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
 199   --enable-libass          enable libass subtitles rendering [no]
 200   --enable-libbluray       enable BluRay reading using libbluray [no]
 201   --enable-libcaca         enable textual display using libcaca
 202   --enable-libcelt         enable CELT decoding via libcelt [no]
 203   --enable-libcdio         enable audio CD grabbing with libcdio
 204   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
 205                            and libraw1394 [no]
 206   --enable-libfaac         enable AAC encoding via libfaac [no]
 207   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
 208   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
 209   --enable-libfreetype     enable libfreetype [no]
 210   --enable-libgme          enable Game Music Emu via libgme [no]
 211   --enable-libgsm          enable GSM de/encoding via libgsm [no]
 212   --enable-libiec61883     enable iec61883 via libiec61883 [no]
 213   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
 214   --enable-libmodplug      enable ModPlug via libmodplug [no]
 215   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
 216   --enable-libnut          enable NUT (de)muxing via libnut,
 217                            native (de)muxer exists [no]
 218   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
 219   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
 220   --enable-libopencv       enable video filtering via libopencv [no]
 221   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
 222   --enable-libopus         enable Opus decoding via libopus [no]
 223   --enable-libpulse        enable Pulseaudio input via libpulse [no]
 224   --enable-libquvi         enable quvi input via libquvi [no]
 225   --enable-librtmp         enable RTMP[E] support via librtmp [no]
 226   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
 227   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
 228   --enable-libsoxr         enable Include libsoxr resampling [no]
 229   --enable-libspeex        enable Speex de/encoding via libspeex [no]
 230   --enable-libssh          enable SFTP protocol via libssh [no]
 231   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
 232   --enable-libtheora       enable Theora encoding via libtheora [no]
 233   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
 234   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
 235   --enable-libv4l2         enable libv4l2/v4l-utils [no]
 236   --enable-libvidstab      enable video stabilization using vid.stab [no]
 237   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
 238   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
 239   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
 240                            native implementation exists [no]
 241   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
 242   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
 243   --enable-libx264         enable H.264 encoding via x264 [no]
 244   --enable-libxavs         enable AVS encoding via xavs [no]
 245   --enable-libxvid         enable Xvid encoding via xvidcore,
 246                            native MPEG-4/Xvid encoder exists [no]
 247   --enable-libzmq          enable message passing via libzmq [no]
 248   --enable-libzvbi         enable teletext support via libzvbi [no]
 249   --enable-openal          enable OpenAL 1.1 capture support [no]
 250   --enable-opencl          enable OpenCL code
 251   --enable-openssl         enable openssl [no]
 252   --enable-x11grab         enable X11 grabbing [no]
 253   --disable-zlib           disable zlib [autodetect]
 254
 255 Advanced options (experts only):
 256   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
 257   --enable-cross-compile   assume a cross-compiler is used
 258   --sysroot=PATH           root of cross-build tree
 259   --sysinclude=PATH        location of cross-build system headers
 260   --target-os=OS           compiler targets OS [$target_os]
 261   --target-exec=CMD        command to run executables on target
 262   --target-path=DIR        path to view of build directory on target
 263   --target-samples=DIR     path to samples directory on target
 264   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
 265   --toolchain=NAME         set tool defaults according to NAME
 266   --nm=NM                  use nm tool NM [$nm_default]
 267   --ar=AR                  use archive tool AR [$ar_default]
 268   --as=AS                  use assembler AS [$as_default]
 269   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
 270   --cc=CC                  use C compiler CC [$cc_default]
 271   --cxx=CXX                use C compiler CXX [$cxx_default]
 272   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
 273   --ld=LD                  use linker LD [$ld_default]
 274   --host-cc=HOSTCC         use host C compiler HOSTCC
 275   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
 276   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
 277   --host-ld=HOSTLD         use host linker HOSTLD
 278   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
 279   --host-libs=HLIBS        use libs HLIBS when linking for host
 280   --host-os=OS             compiler host OS [$target_os]
 281   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
 282   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
 283   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
 284   --extra-libs=ELIBS       add ELIBS [$ELIBS]
 285   --extra-version=STRING   version string suffix []
 286   --optflags=OPTFLAGS      override optimization-related compiler flags
 287   --build-suffix=SUFFIX    library name suffix []
 288   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
 289   --progs-suffix=SUFFIX    program name suffix []
 290   --arch=ARCH              select architecture [$arch]
 291   --cpu=CPU                select the minimum required CPU (affects
 292                            instruction selection, may crash on older CPUs)
 293   --enable-pic             build position-independent code
 294   --enable-sram            allow use of on-chip SRAM
 295   --enable-thumb           compile for Thumb instruction set
 296   --disable-symver         disable symbol versioning
 297   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
 298   --disable-safe-bitstream-reader
 299                            disable buffer boundary checking in bitreaders
 300                            (faster, but may crash)
 301   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
 302   --enable-lto             use link-time optimization
 303
 304 Optimization options (experts only):
 305   --disable-asm            disable all assembler optimizations
 306   --disable-altivec        disable AltiVec optimizations
 307   --disable-amd3dnow       disable 3DNow! optimizations
 308   --disable-amd3dnowext    disable 3DNow! extended optimizations
 309   --disable-mmx            disable MMX optimizations
 310   --disable-mmxext         disable MMXEXT optimizations
 311   --disable-sse            disable SSE optimizations
 312   --disable-sse2           disable SSE2 optimizations
 313   --disable-sse3           disable SSE3 optimizations
 314   --disable-ssse3          disable SSSE3 optimizations
 315   --disable-sse4           disable SSE4 optimizations
 316   --disable-sse42          disable SSE4.2 optimizations
 317   --disable-avx            disable AVX optimizations
 318   --disable-fma4           disable FMA4 optimizations
 319   --disable-avx2           disable AVX2 optimizations
 320   --disable-armv5te        disable armv5te optimizations
 321   --disable-armv6          disable armv6 optimizations
 322   --disable-armv6t2        disable armv6t2 optimizations
 323   --disable-vfp            disable VFP optimizations
 324   --disable-neon           disable NEON optimizations
 325   --disable-vis            disable VIS optimizations
 326   --disable-inline-asm     disable use of inline assembler
 327   --disable-yasm           disable use of yasm assembler
 328   --disable-mips32r2       disable MIPS32R2 optimizations
 329   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
 330   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
 331   --disable-mipsfpu        disable floating point MIPS optimizations
 332   --disable-fast-unaligned consider unaligned accesses slow
 333
 334 Developer options (useful when working on FFmpeg itself):
 335   --disable-debug          disable debugging symbols
 336   --enable-debug=LEVEL     set the debug level [$debuglevel]
 337   --disable-optimizations  disable compiler optimizations
 338   --enable-extra-warnings  enable more compiler warnings
 339   --disable-stripping      disable stripping of executables and shared libraries
 340   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
 341                            2 causes a slowdown at runtime.
 342   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
 343   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
 344                            leaks and errors, using the specified valgrind binary.
 345                            Cannot be combined with --target-exec
 346   --enable-ftrapv          Trap arithmetic overflows
 347   --samples=PATH           location of test samples for FATE, if not set use
 348                            \$FATE_SAMPLES at make invocation time.
 349   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
 350                            should be used only for debugging purposes)
 351   --enable-random          randomly enable/disable components
 352   --disable-random
 353   --enable-random=LIST     randomly enable/disable specific components or
 354   --disable-random=LIST    component groups. LIST is a comma-separated list
 355                            of NAME[:PROB] entries where NAME is a component
 356                            (group) and PROB the probability associated with
 357                            NAME (default 0.5).
 358   --random-seed=VALUE      seed value for --enable/disable-random
 359
 360 NOTE: Object files are built at the place where configure is launched.
 361 EOF
 362   exit 0
 363 }
 364
 365 quotes='""'
 366
 367 log(){
 368     echo "$@" >> $logfile
 369 }
 370
 371 log_file(){
 372     log BEGIN $1
 373     pr -n -t $1 >> $logfile
 374     log END $1
 375 }
 376
 377 echolog(){
 378     log "$@"
 379     echo "$@"
 380 }
 381
 382 warn(){
 383     log "WARNING: $*"
 384     WARNINGS="${WARNINGS}WARNING: $*\n"
 385 }
 386
 387 die(){
 388     echolog "$@"
 389     cat <<EOF
 390
 391 If you think configure made a mistake, make sure you are using the latest
 392 version from Git.  If the latest version fails, report the problem to the
 393 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
 394 EOF
 395     if disabled logging; then
 396         cat <<EOF
 397 Rerun configure with logging enabled (do not use --disable-logging), and
 398 include the log this produces with your report.
 399 EOF
 400     else
 401         cat <<EOF
 402 Include the log file "$logfile" produced by configure as this will help
 403 solving the problem.
 404 EOF
 405     fi
 406     exit 1
 407 }
 408
 409 # Avoid locale weirdness, besides we really just want to translate ASCII.
 410 toupper(){
 411     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
 412 }
 413
 414 tolower(){
 415     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
 416 }
 417
 418 c_escape(){
 419     echo "$*" | sed 's/["\\]/\\\0/g'
 420 }
 421
 422 sh_quote(){
 423     v=$(echo "$1" | sed "s/'/'\\\\''/g")
 424     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
 425     echo "$v"
 426 }
 427
 428 cleanws(){
 429     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\r//g'
 430 }
 431
 432 filter(){
 433     pat=$1
 434     shift
 435     for v; do
 436         eval "case $v in $pat) echo $v ;; esac"
 437     done
 438 }
 439
 440 filter_out(){
 441     pat=$1
 442     shift
 443     for v; do
 444         eval "case $v in $pat) ;; *) echo $v ;; esac"
 445     done
 446 }
 447
 448 map(){
 449     m=$1
 450     shift
 451     for v; do eval $m; done
 452 }
 453
 454 add_suffix(){
 455     suffix=$1
 456     shift
 457     for v; do echo ${v}${suffix}; done
 458 }
 459
 460 set_all(){
 461     value=$1
 462     shift
 463     for var in $*; do
 464         eval $var=$value
 465     done
 466 }
 467
 468 set_weak(){
 469     value=$1
 470     shift
 471     for var; do
 472         eval : \${$var:=$value}
 473     done
 474 }
 475
 476 sanitize_var_name(){
 477     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
 478 }
 479
 480 set_safe(){
 481     var=$1
 482     shift
 483     eval $(sanitize_var_name "$var")='$*'
 484 }
 485
 486 get_safe(){
 487     eval echo \$$(sanitize_var_name "$1")
 488 }
 489
 490 pushvar(){
 491     for pvar in $*; do
 492         eval level=\${${pvar}_level:=0}
 493         eval ${pvar}_${level}="\$$pvar"
 494         eval ${pvar}_level=$(($level+1))
 495     done
 496 }
 497
 498 popvar(){
 499     for pvar in $*; do
 500         eval level=\${${pvar}_level:-0}
 501         test $level = 0 && continue
 502         eval level=$(($level-1))
 503         eval $pvar="\${${pvar}_${level}}"
 504         eval ${pvar}_level=$level
 505         eval unset ${pvar}_${level}
 506     done
 507 }
 508
 509 enable(){
 510     set_all yes $*
 511 }
 512
 513 disable(){
 514     set_all no $*
 515 }
 516
 517 enable_weak(){
 518     set_weak yes $*
 519 }
 520
 521 disable_weak(){
 522     set_weak no $*
 523 }
 524
 525 enable_safe(){
 526     for var; do
 527         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 528     done
 529 }
 530
 531 disable_safe(){
 532     for var; do
 533         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
 534     done
 535 }
 536
 537 do_enable_deep(){
 538     for var; do
 539         enabled $var && continue
 540         eval sel="\$${var}_select"
 541         eval sgs="\$${var}_suggest"
 542         pushvar var sgs
 543         enable_deep $sel
 544         popvar sgs
 545         enable_deep_weak $sgs
 546         popvar var
 547     done
 548 }
 549
 550 enable_deep(){
 551     do_enable_deep $*
 552     enable $*
 553 }
 554
 555 enable_deep_weak(){
 556     for var; do
 557         disabled $var && continue
 558         pushvar var
 559         do_enable_deep $var
 560         popvar var
 561         enable_weak $var
 562     done
 563 }
 564
 565 enabled(){
 566     test "${1#!}" = "$1" && op== || op=!=
 567     eval test "x\$${1#!}" $op "xyes"
 568 }
 569
 570 disabled(){
 571     test "${1#!}" = "$1" && op== || op=!=
 572     eval test "x\$${1#!}" $op "xno"
 573 }
 574
 575 enabled_all(){
 576     for opt; do
 577         enabled $opt || return 1
 578     done
 579 }
 580
 581 disabled_all(){
 582     for opt; do
 583         disabled $opt || return 1
 584     done
 585 }
 586
 587 enabled_any(){
 588     for opt; do
 589         enabled $opt && return 0
 590     done
 591 }
 592
 593 disabled_any(){
 594     for opt; do
 595         disabled $opt && return 0
 596     done
 597     return 1
 598 }
 599
 600 set_default(){
 601     for opt; do
 602         eval : \${$opt:=\$${opt}_default}
 603     done
 604 }
 605
 606 is_in(){
 607     value=$1
 608     shift
 609     for var in $*; do
 610         [ $var = $value ] && return 0
 611     done
 612     return 1
 613 }
 614
 615 do_check_deps(){
 616     for cfg; do
 617         cfg="${cfg#!}"
 618         enabled ${cfg}_checking && die "Circular dependency for $cfg."
 619         disabled ${cfg}_checking && continue
 620         enable ${cfg}_checking
 621         append allopts $cfg
 622
 623         eval dep_all="\$${cfg}_deps"
 624         eval dep_any="\$${cfg}_deps_any"
 625         eval dep_sel="\$${cfg}_select"
 626         eval dep_sgs="\$${cfg}_suggest"
 627         eval dep_ifa="\$${cfg}_if"
 628         eval dep_ifn="\$${cfg}_if_any"
 629
 630         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 631         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
 632         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
 633
 634         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
 635         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
 636         enabled_all  $dep_all || disable $cfg
 637         enabled_any  $dep_any || disable $cfg
 638         disabled_any $dep_sel && disable $cfg
 639
 640         if enabled $cfg; then
 641             enable_deep $dep_sel
 642             enable_deep_weak $dep_sgs
 643         fi
 644
 645         disable ${cfg}_checking
 646     done
 647 }
 648
 649 check_deps(){
 650     unset allopts
 651
 652     do_check_deps "$@"
 653
 654     for cfg in $allopts; do
 655         enabled $cfg || continue
 656         eval dep_extralibs="\$${cfg}_extralibs"
 657         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
 658     done
 659 }
 660
 661 print_config(){
 662     pfx=$1
 663     files=$2
 664     shift 2
 665     map 'eval echo "$v \${$v:-no}"' "$@" |
 666     awk "BEGIN { split(\"$files\", files) }
 667         {
 668             c = \"$pfx\" toupper(\$1);
 669             v = \$2;
 670             sub(/yes/, 1, v);
 671             sub(/no/,  0, v);
 672             for (f in files) {
 673                 file = files[f];
 674                 if (file ~ /\\.h\$/) {
 675                     printf(\"#define %s %d\\n\", c, v) >>file;
 676                 } else if (file ~ /\\.asm\$/) {
 677                     printf(\"%%define %s %d\\n\", c, v) >>file;
 678                 } else if (file ~ /\\.mak\$/) {
 679                     n = -v ? \"\" : \"!\";
 680                     printf(\"%s%s=yes\\n\", n, c) >>file;
 681                 } else if (file ~ /\\.texi\$/) {
 682                     pre = -v ? \"\" : \"@c \";
 683                     yesno = \$2;
 684                     c2 = tolower(c);
 685                     gsub(/_/, \"-\", c2);
 686                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
 687                 }
 688             }
 689         }"
 690 }
 691
 692 print_enabled(){
 693     suf=$1
 694     shift
 695     for v; do
 696         enabled $v && printf "%s\n" ${v%$suf};
 697     done
 698 }
 699
 700 append(){
 701     var=$1
 702     shift
 703     eval "$var=\"\$$var $*\""
 704 }
 705
 706 prepend(){
 707     var=$1
 708     shift
 709     eval "$var=\"$* \$$var\""
 710 }
 711
 712 add_cppflags(){
 713     append CPPFLAGS "$@"
 714 }
 715
 716 add_cflags(){
 717     append CFLAGS $($cflags_filter "$@")
 718 }
 719
 720 add_cxxflags(){
 721     append CXXFLAGS $($cflags_filter "$@")
 722 }
 723
 724 add_asflags(){
 725     append ASFLAGS $($asflags_filter "$@")
 726 }
 727
 728 add_ldflags(){
 729     append LDFLAGS $($ldflags_filter "$@")
 730 }
 731
 732 add_stripflags(){
 733     append ASMSTRIPFLAGS "$@"
 734 }
 735
 736 add_extralibs(){
 737     prepend extralibs $($ldflags_filter "$@")
 738 }
 739
 740 add_host_cppflags(){
 741     append host_cppflags "$@"
 742 }
 743
 744 add_host_cflags(){
 745     append host_cflags $($host_cflags_filter "$@")
 746 }
 747
 748 add_host_ldflags(){
 749     append host_ldflags $($host_ldflags_filter "$@")
 750 }
 751
 752 add_compat(){
 753     append compat_objs $1
 754     shift
 755     map 'add_cppflags -D$v' "$@"
 756 }
 757
 758 check_cmd(){
 759     log "$@"
 760     "$@" >> $logfile 2>&1
 761 }
 762
 763 cc_o(){
 764     eval printf '%s\\n' $CC_O
 765 }
 766
 767 cc_e(){
 768     eval printf '%s\\n' $CC_E
 769 }
 770
 771 check_cc(){
 772     log check_cc "$@"
 773     cat > $TMPC
 774     log_file $TMPC
 775     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
 776 }
 777
 778 check_cxx(){
 779     log check_cxx "$@"
 780     cat > $TMPCPP
 781     log_file $TMPCPP
 782     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
 783 }
 784
 785 check_cpp(){
 786     log check_cpp "$@"
 787     cat > $TMPC
 788     log_file $TMPC
 789     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
 790 }
 791
 792 as_o(){
 793     eval printf '%s\\n' $AS_O
 794 }
 795
 796 check_as(){
 797     log check_as "$@"
 798     cat > $TMPS
 799     log_file $TMPS
 800     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
 801 }
 802
 803 check_inline_asm(){
 804     log check_inline_asm "$@"
 805     name="$1"
 806     code="$2"
 807     shift 2
 808     disable $name
 809     check_cc "$@" <<EOF && enable $name
 810 void foo(void){ __asm__ volatile($code); }
 811 EOF
 812 }
 813
 814 check_insn(){
 815     log check_insn "$@"
 816     check_inline_asm ${1}_inline "\"$2\""
 817     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
 818 }
 819
 820 check_yasm(){
 821     log check_yasm "$@"
 822     echo "$1" > $TMPS
 823     log_file $TMPS
 824     shift 1
 825     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
 826 }
 827
 828 ld_o(){
 829     eval printf '%s\\n' $LD_O
 830 }
 831
 832 check_ld(){
 833     log check_ld "$@"
 834     type=$1
 835     shift 1
 836     flags=$(filter_out '-l*|*.so' $@)
 837     libs=$(filter '-l*|*.so' $@)
 838     check_$type $($cflags_filter $flags) || return
 839     flags=$($ldflags_filter $flags)
 840     libs=$($ldflags_filter $libs)
 841     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
 842 }
 843
 844 check_code(){
 845     log check_code "$@"
 846     check=$1
 847     headers=$2
 848     code=$3
 849     shift 3
 850     {
 851         for hdr in $headers; do
 852             echo "#include <$hdr>"
 853         done
 854         echo "int main(void) { $code; return 0; }"
 855     } | check_$check "$@"
 856 }
 857
 858 check_cppflags(){
 859     log check_cppflags "$@"
 860     check_cc "$@" <<EOF && append CPPFLAGS "$@"
 861 int x;
 862 EOF
 863 }
 864
 865 check_cflags(){
 866     log check_cflags "$@"
 867     set -- $($cflags_filter "$@")
 868     check_cc "$@" <<EOF && append CFLAGS "$@"
 869 int x;
 870 EOF
 871 }
 872
 873 check_cxxflags(){
 874     log check_cxxflags "$@"
 875     set -- $($cflags_filter "$@")
 876     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
 877 int x;
 878 EOF
 879 }
 880
 881 test_ldflags(){
 882     log test_ldflags "$@"
 883     check_ld "cc" "$@" <<EOF
 884 int main(void){ return 0; }
 885 EOF
 886 }
 887
 888 check_ldflags(){
 889     log check_ldflags "$@"
 890     test_ldflags "$@" && add_ldflags "$@"
 891 }
 892
 893 test_stripflags(){
 894     log test_stripflags "$@"
 895     # call check_cc to get a fresh TMPO
 896     check_cc <<EOF
 897 int main(void) { return 0; }
 898 EOF
 899     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
 900 }
 901
 902 check_stripflags(){
 903     log check_stripflags "$@"
 904     test_stripflags "$@" && add_stripflags "$@"
 905 }
 906
 907 check_header(){
 908     log check_header "$@"
 909     header=$1
 910     shift
 911     disable_safe $header
 912     check_cpp "$@" <<EOF && enable_safe $header
 913 #include <$header>
 914 int x;
 915 EOF
 916 }
 917
 918 check_func(){
 919     log check_func "$@"
 920     func=$1
 921     shift
 922     disable $func
 923     check_ld "cc" "$@" <<EOF && enable $func
 924 extern int $func();
 925 int main(void){ $func(); }
 926 EOF
 927 }
 928
 929 check_mathfunc(){
 930     log check_mathfunc "$@"
 931     func=$1
 932     narg=$2
 933     shift 2
 934     test $narg = 2 && args="f, g" || args="f"
 935     disable $func
 936     check_ld "cc" "$@" <<EOF && enable $func
 937 #include <math.h>
 938 float foo(float f, float g) { return $func($args); }
 939 int main(void){ return (int) foo; }
 940 EOF
 941 }
 942
 943 check_func_headers(){
 944     log check_func_headers "$@"
 945     headers=$1
 946     funcs=$2
 947     shift 2
 948     {
 949         for hdr in $headers; do
 950             echo "#include <$hdr>"
 951         done
 952         for func in $funcs; do
 953             echo "long check_$func(void) { return (long) $func; }"
 954         done
 955         echo "int main(void) { return 0; }"
 956     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
 957 }
 958
 959 check_class_headers_cpp(){
 960     log check_class_headers_cpp "$@"
 961     headers=$1
 962     classes=$2
 963     shift 2
 964     {
 965         for hdr in $headers; do
 966             echo "#include <$hdr>"
 967         done
 968         echo "int main(void) { "
 969         i=1
 970         for class in $classes; do
 971             echo "$class obj$i;"
 972             i=$(expr $i + 1)
 973         done
 974         echo "return 0; }"
 975     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
 976 }
 977
 978 check_cpp_condition(){
 979     log check_cpp_condition "$@"
 980     header=$1
 981     condition=$2
 982     shift 2
 983     check_cpp "$@" <<EOF
 984 #include <$header>
 985 #if !($condition)
 986 #error "unsatisfied condition: $condition"
 987 #endif
 988 EOF
 989 }
 990
 991 check_lib(){
 992     log check_lib "$@"
 993     header="$1"
 994     func="$2"
 995     shift 2
 996     check_header $header && check_func $func "$@" && add_extralibs "$@"
 997 }
 998
 999 check_lib2(){
1000     log check_lib2 "$@"
1001     headers="$1"
1002     funcs="$2"
1003     shift 2
1004     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1005 }
1006
1007 check_lib_cpp(){
1008     log check_lib_cpp "$@"
1009     headers="$1"
1010     classes="$2"
1011     shift 2
1012     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1013 }
1014
1015 check_pkg_config(){
1016     log check_pkg_config "$@"
1017     pkg="$1"
1018     headers="$2"
1019     funcs="$3"
1020     shift 3
1021     check_cmd $pkg_config --exists --print-errors $pkg || return
1022     pkg_cflags=$($pkg_config --cflags $pkg)
1023     pkg_libs=$($pkg_config --libs $pkg)
1024     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1025         set_safe ${pkg}_cflags $pkg_cflags   &&
1026         set_safe ${pkg}_libs   $pkg_libs
1027 }
1028
1029 check_exec(){
1030     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1031 }
1032
1033 check_exec_crash(){
1034     code=$(cat)
1035
1036     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1037     # are safe but may not be available everywhere.  Thus we use
1038     # raise(SIGTERM) instead.  The check is run in a subshell so we
1039     # can redirect the "Terminated" message from the shell.  SIGBUS
1040     # is not defined by standard C so it is used conditionally.
1041
1042     (check_exec "$@") >> $logfile 2>&1 <<EOF
1043 #include <signal.h>
1044 static void sighandler(int sig){
1045     raise(SIGTERM);
1046 }
1047 int foo(void){
1048     $code
1049 }
1050 int (*func_ptr)(void) = foo;
1051 int main(void){
1052     signal(SIGILL, sighandler);
1053     signal(SIGFPE, sighandler);
1054     signal(SIGSEGV, sighandler);
1055 #ifdef SIGBUS
1056     signal(SIGBUS, sighandler);
1057 #endif
1058     return func_ptr();
1059 }
1060 EOF
1061 }
1062
1063 check_type(){
1064     log check_type "$@"
1065     headers=$1
1066     type=$2
1067     shift 2
1068     disable_safe "$type"
1069     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1070 }
1071
1072 check_struct(){
1073     log check_struct "$@"
1074     headers=$1
1075     struct=$2
1076     member=$3
1077     shift 3
1078     disable_safe "${struct}_${member}"
1079     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1080         enable_safe "${struct}_${member}"
1081 }
1082
1083 check_builtin(){
1084     log check_builtin "$@"
1085     name=$1
1086     headers=$2
1087     builtin=$3
1088     shift 3
1089     disable "$name"
1090     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1091 }
1092
1093 require(){
1094     name="$1"
1095     header="$2"
1096     func="$3"
1097     shift 3
1098     check_lib $header $func "$@" || die "ERROR: $name not found"
1099 }
1100
1101 require2(){
1102     name="$1"
1103     headers="$2"
1104     func="$3"
1105     shift 3
1106     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1107 }
1108
1109 require_cpp(){
1110     name="$1"
1111     headers="$2"
1112     classes="$3"
1113     shift 3
1114     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1115 }
1116
1117 require_pkg_config(){
1118     pkg="$1"
1119     check_pkg_config "$@" || die "ERROR: $pkg not found"
1120     add_cflags    $(get_safe ${pkg}_cflags)
1121     add_extralibs $(get_safe ${pkg}_libs)
1122 }
1123
1124 require_libfreetype(){
1125     log require_libfreetype "$@"
1126     pkg="freetype2"
1127     check_cmd $pkg_config --exists --print-errors $pkg \
1128       || die "ERROR: $pkg not found"
1129     pkg_cflags=$($pkg_config --cflags $pkg)
1130     pkg_libs=$($pkg_config --libs $pkg)
1131     {
1132         echo "#include <ft2build.h>"
1133         echo "#include FT_FREETYPE_H"
1134         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1135         echo "int main(void) { return 0; }"
1136     } | check_ld "cc" $pkg_cflags $pkg_libs \
1137       && set_safe ${pkg}_cflags $pkg_cflags \
1138       && set_safe ${pkg}_libs   $pkg_libs \
1139       || die "ERROR: $pkg not found"
1140     add_cflags    $(get_safe ${pkg}_cflags)
1141     add_extralibs $(get_safe ${pkg}_libs)
1142 }
1143
1144 hostcc_o(){
1145     eval printf '%s\\n' $HOSTCC_O
1146 }
1147
1148 check_host_cc(){
1149     log check_host_cc "$@"
1150     cat > $TMPC
1151     log_file $TMPC
1152     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1153 }
1154
1155 check_host_cppflags(){
1156     log check_host_cppflags "$@"
1157     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1158 int x;
1159 EOF
1160 }
1161
1162 check_host_cflags(){
1163     log check_host_cflags "$@"
1164     set -- $($host_cflags_filter "$@")
1165     check_host_cc "$@" <<EOF && append host_cflags "$@"
1166 int x;
1167 EOF
1168 }
1169
1170 apply(){
1171     file=$1
1172     shift
1173     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1174 }
1175
1176 cp_if_changed(){
1177     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1178     mkdir -p "$(dirname $2)"
1179     $cp_f "$1" "$2"
1180 }
1181
1182 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1183 # system-dependent things.
1184
1185 COMPONENT_LIST="
1186     bsfs
1187     decoders
1188     demuxers
1189     encoders
1190     filters
1191     hwaccels
1192     indevs
1193     muxers
1194     outdevs
1195     parsers
1196     protocols
1197 "
1198
1199 EXTERNAL_LIBRARY_LIST="
1200     avisynth
1201     bzlib
1202     crystalhd
1203     fontconfig
1204     frei0r
1205     gnutls
1206     iconv
1207     ladspa
1208     libaacplus
1209     libass
1210     libbluray
1211     libcaca
1212     libcdio
1213     libcelt
1214     libdc1394
1215     libfaac
1216     libfdk_aac
1217     libflite
1218     libfreetype
1219     libgme
1220     libgsm
1221     libiec61883
1222     libilbc
1223     libmodplug
1224     libmp3lame
1225     libnut
1226     libopencore_amrnb
1227     libopencore_amrwb
1228     libopencv
1229     libopenjpeg
1230     libopus
1231     libpulse
1232     libquvi
1233     librtmp
1234     libschroedinger
1235     libshine
1236     libsoxr
1237     libspeex
1238     libssh
1239     libstagefright_h264
1240     libtheora
1241     libtwolame
1242     libutvideo
1243     libv4l2
1244     libvidstab
1245     libvo_aacenc
1246     libvo_amrwbenc
1247     libvorbis
1248     libvpx
1249     libwavpack
1250     libx264
1251     libxavs
1252     libxvid
1253     libzmq
1254     libzvbi
1255     openal
1256     opencl
1257     openssl
1258     x11grab
1259     zlib
1260 "
1261
1262 DOCUMENT_LIST="
1263     doc
1264     htmlpages
1265     manpages
1266     podpages
1267     txtpages
1268 "
1269
1270 HWACCEL_LIST="
1271     dxva2
1272     vaapi
1273     vda
1274     vdpau
1275 "
1276
1277 LIBRARY_LIST="
1278     avcodec
1279     avdevice
1280     avfilter
1281     avformat
1282     avresample
1283     avutil
1284     postproc
1285     swresample
1286     swscale
1287 "
1288
1289 PROGRAM_LIST="
1290     ffplay
1291     ffprobe
1292     ffserver
1293     ffmpeg
1294 "
1295
1296 CONFIG_LIST="
1297     $COMPONENT_LIST
1298     $DOCUMENT_LIST
1299     $EXTERNAL_LIBRARY_LIST
1300     $HWACCEL_LIST
1301     $LIBRARY_LIST
1302     $PROGRAM_LIST
1303     dct
1304     dwt
1305     error_resilience
1306     fast_unaligned
1307     fft
1308     ftrapv
1309     gpl
1310     gray
1311     hardcoded_tables
1312     incompatible_libav_abi
1313     incompatible_fork_abi
1314     lsp
1315     lzo
1316     mdct
1317     memalign_hack
1318     memory_poisoning
1319     network
1320     nonfree
1321     pic
1322     raise_major
1323     rdft
1324     runtime_cpudetect
1325     safe_bitstream_reader
1326     shared
1327     small
1328     sram
1329     static
1330     swscale_alpha
1331     thumb
1332     version3
1333     xmm_clobber_test
1334 "
1335
1336 THREADS_LIST='
1337     pthreads
1338     w32threads
1339     os2threads
1340 '
1341
1342 ATOMICS_LIST='
1343     atomics_gcc
1344     atomics_suncc
1345     atomics_win32
1346 '
1347
1348 ARCH_LIST='
1349     aarch64
1350     alpha
1351     arm
1352     avr32
1353     avr32_ap
1354     avr32_uc
1355     bfin
1356     ia64
1357     m68k
1358     mips
1359     mips64
1360     parisc
1361     ppc
1362     ppc64
1363     s390
1364     sh4
1365     sparc
1366     sparc64
1367     tilegx
1368     tilepro
1369     tomi
1370     x86
1371     x86_32
1372     x86_64
1373 '
1374
1375 ARCH_EXT_LIST_ARM='
1376     armv5te
1377     armv6
1378     armv6t2
1379     neon
1380     vfp
1381     vfpv3
1382 '
1383
1384 ARCH_EXT_LIST_X86='
1385     amd3dnow
1386     amd3dnowext
1387     avx
1388     avx2
1389     fma4
1390     i686
1391     mmx
1392     mmxext
1393     sse
1394     sse2
1395     sse3
1396     sse4
1397     sse42
1398     ssse3
1399 '
1400
1401 ARCH_EXT_LIST="
1402     $ARCH_EXT_LIST_ARM
1403     $ARCH_EXT_LIST_X86
1404     altivec
1405     ppc4xx
1406     vis
1407     mipsfpu
1408     mips32r2
1409     mipsdspr1
1410     mipsdspr2
1411 "
1412
1413 HAVE_LIST_CMDLINE='
1414     inline_asm
1415     symver
1416     yasm
1417 '
1418
1419 HAVE_LIST_PUB='
1420     bigendian
1421     fast_unaligned
1422     incompatible_libav_abi
1423     incompatible_fork_abi
1424 '
1425
1426 MATH_FUNCS="
1427     atanf
1428     atan2f
1429     cbrt
1430     cbrtf
1431     cosf
1432     exp2
1433     exp2f
1434     expf
1435     isinf
1436     isnan
1437     ldexpf
1438     llrint
1439     llrintf
1440     log2
1441     log2f
1442     log10f
1443     lrint
1444     lrintf
1445     powf
1446     rint
1447     round
1448     roundf
1449     sinf
1450     trunc
1451     truncf
1452 "
1453
1454 HAVE_LIST="
1455     $ARCH_EXT_LIST
1456     $(add_suffix _external $ARCH_EXT_LIST)
1457     $(add_suffix _inline   $ARCH_EXT_LIST)
1458     $HAVE_LIST_CMDLINE
1459     $HAVE_LIST_PUB
1460     $THREADS_LIST
1461     $ATOMICS_LIST
1462     $MATH_FUNCS
1463     access
1464     aligned_malloc
1465     aligned_stack
1466     alsa_asoundlib_h
1467     altivec_h
1468     arpa_inet_h
1469     asm_mod_q
1470     asm_mod_y
1471     asm_types_h
1472     atomic_cas_ptr
1473     atomics_native
1474     attribute_may_alias
1475     attribute_packed
1476     cdio_paranoia_h
1477     cdio_paranoia_paranoia_h
1478     CL_cl_h
1479     clock_gettime
1480     closesocket
1481     CommandLineToArgvW
1482     cpunop
1483     CryptGenRandom
1484     dcbzl
1485     dev_bktr_ioctl_bt848_h
1486     dev_bktr_ioctl_meteor_h
1487     dev_ic_bt8xx_h
1488     dev_video_bktr_ioctl_bt848_h
1489     dev_video_meteor_ioctl_meteor_h
1490     direct_h
1491     dlfcn_h
1492     dlopen
1493     dos_paths
1494     dxva_h
1495     ebp_available
1496     ebx_available
1497     fast_64bit
1498     fast_clz
1499     fast_cmov
1500     fcntl
1501     fork
1502     getaddrinfo
1503     gethrtime
1504     getopt
1505     GetProcessAffinityMask
1506     GetProcessMemoryInfo
1507     GetProcessTimes
1508     GetSystemTimeAsFileTime
1509     getrusage
1510     getservbyport
1511     gettimeofday
1512     glob
1513     gnu_as
1514     gsm_h
1515     ibm_asm
1516     inet_aton
1517     io_h
1518     inline_asm_labels
1519     isatty
1520     jack_port_get_latency_range
1521     kbhit
1522     ldbrx
1523     libdc1394_1
1524     libdc1394_2
1525     local_aligned_16
1526     local_aligned_8
1527     localtime_r
1528     loongson
1529     lzo1x_999_compress
1530     machine_ioctl_bt848_h
1531     machine_ioctl_meteor_h
1532     machine_rw_barrier
1533     makeinfo
1534     malloc_h
1535     MapViewOfFile
1536     memalign
1537     MemoryBarrier
1538     mkstemp
1539     mm_empty
1540     mmap
1541     mprotect
1542     msvcrt
1543     nanosleep
1544     openjpeg_1_5_openjpeg_h
1545     PeekNamedPipe
1546     perl
1547     pod2man
1548     poll_h
1549     posix_memalign
1550     pragma_deprecated
1551     pthread_cancel
1552     rdtsc
1553     rsync_contimeout
1554     sarestart
1555     sched_getaffinity
1556     sdl
1557     SetConsoleTextAttribute
1558     setmode
1559     setrlimit
1560     Sleep
1561     sndio_h
1562     socklen_t
1563     soundcard_h
1564     strerror_r
1565     struct_addrinfo
1566     struct_group_source_req
1567     struct_ip_mreq_source
1568     struct_ipv6_mreq
1569     struct_pollfd
1570     struct_rusage_ru_maxrss
1571     struct_sctp_event_subscribe
1572     struct_sockaddr_in6
1573     struct_sockaddr_sa_len
1574     struct_sockaddr_storage
1575     struct_stat_st_mtim_tv_nsec
1576     struct_v4l2_frmivalenum_discrete
1577     symver_asm_label
1578     symver_gnu_asm
1579     sync_val_compare_and_swap
1580     sysconf
1581     sysctl
1582     sys_mman_h
1583     sys_param_h
1584     sys_resource_h
1585     sys_select_h
1586     sys_soundcard_h
1587     sys_time_h
1588     sys_un_h
1589     sys_videoio_h
1590     termios_h
1591     texi2html
1592     threads
1593     unistd_h
1594     usleep
1595     vfp_args
1596     VirtualAlloc
1597     windows_h
1598     winsock2_h
1599     xform_asm
1600     xmm_clobbers
1601 "
1602
1603 # options emitted with CONFIG_ prefix but not available on the command line
1604 CONFIG_EXTRA="
1605     aandcttables
1606     ac3dsp
1607     audio_frame_queue
1608     dsputil
1609     exif
1610     frame_thread_encoder
1611     gcrypt
1612     golomb
1613     gplv3
1614     h264chroma
1615     h264dsp
1616     h264pred
1617     h264qpel
1618     hpeldsp
1619     huffman
1620     lgplv3
1621     lpc
1622     mpegaudio
1623     mpegaudiodsp
1624     mpegvideo
1625     mpegvideoenc
1626     nettle
1627     rangecoder
1628     riffdec
1629     riffenc
1630     rtpdec
1631     rtpenc_chain
1632     sinewin
1633     videodsp
1634     vp3dsp
1635 "
1636
1637 CMDLINE_SELECT="
1638     $ARCH_EXT_LIST
1639     $CONFIG_LIST
1640     $HAVE_LIST_CMDLINE
1641     $THREADS_LIST
1642     asm
1643     cross_compile
1644     debug
1645     extra_warnings
1646     logging
1647     lto
1648     optimizations
1649     stripping
1650 "
1651
1652 PATHS_LIST='
1653     bindir
1654     datadir
1655     docdir
1656     incdir
1657     libdir
1658     mandir
1659     prefix
1660     shlibdir
1661 '
1662
1663 CMDLINE_SET="
1664     $PATHS_LIST
1665     ar
1666     arch
1667     as
1668     assert_level
1669     build_suffix
1670     cc
1671     cpu
1672     cross_prefix
1673     cxx
1674     dep_cc
1675     extra_version
1676     host_cc
1677     host_cflags
1678     host_ld
1679     host_ldflags
1680     host_libs
1681     host_os
1682     install
1683     ld
1684     logfile
1685     malloc_prefix
1686     nm
1687     optflags
1688     pkg_config
1689     progs_suffix
1690     random_seed
1691     samples
1692     strip
1693     sysinclude
1694     sysroot
1695     target_exec
1696     target_os
1697     target_path
1698     target_samples
1699     tempprefix
1700     toolchain
1701     valgrind
1702     yasmexe
1703 "
1704
1705 CMDLINE_APPEND="
1706     extra_cflags
1707     extra_cxxflags
1708     host_cppflags
1709 "
1710
1711 # code dependency declarations
1712
1713 # architecture extensions
1714
1715 armv5te_deps="arm"
1716 armv6_deps="arm"
1717 armv6t2_deps="arm"
1718 neon_deps="arm"
1719 vfp_deps="arm"
1720 vfpv3_deps="vfp"
1721
1722 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1723
1724 mipsfpu_deps="mips"
1725 mips32r2_deps="mips"
1726 mipsdspr1_deps="mips"
1727 mipsdspr2_deps="mips"
1728
1729 altivec_deps="ppc"
1730 ppc4xx_deps="ppc"
1731
1732 vis_deps="sparc"
1733
1734 cpunop_deps="i686"
1735 x86_64_select="i686"
1736 x86_64_suggest="fast_cmov"
1737
1738 amd3dnow_deps="mmx"
1739 amd3dnowext_deps="amd3dnow"
1740 mmx_deps="x86"
1741 mmxext_deps="mmx"
1742 sse_deps="mmxext"
1743 sse2_deps="sse"
1744 sse3_deps="sse2"
1745 ssse3_deps="sse3"
1746 sse4_deps="ssse3"
1747 sse42_deps="sse4"
1748 avx_deps="sse42"
1749 fma4_deps="avx"
1750 avx2_deps="avx"
1751
1752 mmx_external_deps="yasm"
1753 mmx_inline_deps="inline_asm"
1754 mmx_suggest="mmx_external mmx_inline"
1755
1756 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1757     eval dep=\$${ext}_deps
1758     eval ${ext}_external_deps='"${dep}_external"'
1759     eval ${ext}_inline_deps='"${dep}_inline"'
1760     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1761 done
1762
1763 aligned_stack_if_any="ppc x86"
1764 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1765 fast_clz_if_any="alpha avr32 mips ppc x86"
1766 fast_unaligned_if_any="ppc x86"
1767
1768 inline_asm_deps="!tms470"
1769 need_memalign="altivec neon sse"
1770
1771 symver_if_any="symver_asm_label symver_gnu_asm"
1772
1773 log2_deps="!msvcrt"
1774
1775 # subsystems
1776 dct_select="rdft"
1777 error_resilience_select="dsputil"
1778 frame_thread_encoder_deps="encoders threads"
1779 lpc_select="dsputil"
1780 mdct_select="fft"
1781 rdft_select="fft"
1782 mpegaudio_select="mpegaudiodsp"
1783 mpegaudiodsp_select="dct"
1784 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1785 mpegvideoenc_select="mpegvideo"
1786
1787 # decoders / encoders
1788 aac_decoder_select="mdct sinewin"
1789 aac_encoder_select="audio_frame_queue mdct sinewin"
1790 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1791 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1792 ac3_encoder_select="mdct ac3dsp dsputil"
1793 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1794 aic_decoder_select="dsputil golomb"
1795 alac_encoder_select="lpc"
1796 als_decoder_select="dsputil"
1797 amrnb_decoder_select="lsp"
1798 amrwb_decoder_select="lsp"
1799 amv_decoder_select="dsputil hpeldsp exif"
1800 amv_encoder_select="aandcttables"
1801 ape_decoder_select="dsputil"
1802 asv1_decoder_select="dsputil"
1803 asv1_encoder_select="dsputil"
1804 asv2_decoder_select="dsputil"
1805 asv2_encoder_select="dsputil"
1806 atrac1_decoder_select="mdct sinewin"
1807 atrac3_decoder_select="mdct"
1808 avrn_decoder_select="exif"
1809 bink_decoder_select="dsputil hpeldsp"
1810 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1811 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1812 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1813 cllc_decoder_select="dsputil"
1814 comfortnoise_encoder_select="lpc"
1815 cook_decoder_select="dsputil mdct sinewin"
1816 cscd_decoder_select="lzo"
1817 cscd_decoder_suggest="zlib"
1818 dca_decoder_select="mdct"
1819 dirac_decoder_select="dsputil dwt golomb videodsp"
1820 dnxhd_decoder_select="dsputil"
1821 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1822 dvvideo_decoder_select="dsputil"
1823 dvvideo_encoder_select="dsputil"
1824 dxa_decoder_select="zlib"
1825 eac3_decoder_select="ac3_decoder"
1826 eac3_encoder_select="ac3_encoder"
1827 eamad_decoder_select="aandcttables dsputil mpegvideo"
1828 eatgq_decoder_select="aandcttables"
1829 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1830 exr_decoder_select="zlib"
1831 ffv1_decoder_select="dsputil golomb rangecoder"
1832 ffv1_encoder_select="dsputil rangecoder"
1833 ffvhuff_decoder_select="dsputil"
1834 ffvhuff_encoder_select="dsputil huffman"
1835 flac_decoder_select="golomb"
1836 flac_encoder_select="dsputil golomb lpc"
1837 flashsv_decoder_select="zlib"
1838 flashsv_encoder_select="zlib"
1839 flashsv2_encoder_select="zlib"
1840 flashsv2_decoder_select="zlib"
1841 flv_decoder_select="h263_decoder"
1842 flv_encoder_select="h263_encoder"
1843 fourxm_decoder_select="dsputil"
1844 fraps_decoder_select="dsputil huffman"
1845 g2m_decoder_select="dsputil zlib"
1846 g729_decoder_select="dsputil"
1847 h261_decoder_select="error_resilience mpegvideo"
1848 h261_encoder_select="aandcttables mpegvideoenc"
1849 h263_decoder_select="error_resilience h263_parser mpegvideo"
1850 h263_encoder_select="aandcttables mpegvideoenc"
1851 h263i_decoder_select="h263_decoder"
1852 h263p_encoder_select="h263_encoder"
1853 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1854 h264_decoder_suggest="error_resilience"
1855 hevc_decoder_select="dsputil golomb videodsp"
1856 huffyuv_decoder_select="dsputil"
1857 huffyuv_encoder_select="dsputil huffman"
1858 iac_decoder_select="dsputil fft mdct sinewin"
1859 imc_decoder_select="dsputil fft mdct sinewin"
1860 indeo3_decoder_select="hpeldsp"
1861 interplay_video_decoder_select="hpeldsp"
1862 jpegls_decoder_select="dsputil golomb hpeldsp exif"
1863 jpegls_encoder_select="golomb"
1864 jv_decoder_select="dsputil"
1865 lagarith_decoder_select="dsputil"
1866 ljpeg_encoder_select="aandcttables mpegvideoenc"
1867 loco_decoder_select="golomb"
1868 mdec_decoder_select="dsputil error_resilience mpegvideo"
1869 metasound_decoder_select="lsp mdct sinewin"
1870 mimic_decoder_select="dsputil hpeldsp"
1871 mjpeg_decoder_select="dsputil hpeldsp exif"
1872 mjpegb_decoder_select="dsputil hpeldsp exif"
1873 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1874 mlp_decoder_select="dsputil mlp_parser"
1875 motionpixels_decoder_select="dsputil"
1876 mp1_decoder_select="mpegaudio"
1877 mp1float_decoder_select="mpegaudio"
1878 mp2_decoder_select="mpegaudio"
1879 mp2float_decoder_select="mpegaudio"
1880 mp3_decoder_select="mpegaudio"
1881 mp3adu_decoder_select="mpegaudio"
1882 mp3adufloat_decoder_select="mpegaudio"
1883 mp3float_decoder_select="mpegaudio"
1884 mp3on4_decoder_select="mpegaudio"
1885 mp3on4float_decoder_select="mpegaudio"
1886 mpc7_decoder_select="dsputil mpegaudiodsp"
1887 mpc8_decoder_select="dsputil mpegaudiodsp"
1888 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1889 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1890 mpeg1video_decoder_select="error_resilience mpegvideo"
1891 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1892 mpeg2video_decoder_select="error_resilience mpegvideo"
1893 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1894 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1895 mpeg4_encoder_select="h263_encoder"
1896 msmpeg4v1_decoder_select="h263_decoder"
1897 msmpeg4v2_decoder_select="h263_decoder"
1898 msmpeg4v2_encoder_select="h263_encoder"
1899 msmpeg4v3_decoder_select="h263_decoder"
1900 msmpeg4v3_encoder_select="h263_encoder"
1901 mss2_decoder_select="error_resilience vc1_decoder"
1902 mxpeg_decoder_select="dsputil hpeldsp exif"
1903 nellymoser_decoder_select="mdct sinewin"
1904 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1905 nuv_decoder_select="dsputil lzo"
1906 png_decoder_select="zlib"
1907 png_encoder_select="dsputil zlib"
1908 prores_decoder_select="dsputil"
1909 prores_encoder_select="dsputil"
1910 qcelp_decoder_select="lsp"
1911 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1912 ra_144_encoder_select="audio_frame_queue lpc"
1913 ralf_decoder_select="golomb"
1914 rtjpeg_decoder_select="dsputil"
1915 rv10_decoder_select="error_resilience h263_decoder"
1916 rv10_encoder_select="h263_encoder"
1917 rv20_decoder_select="error_resilience h263_decoder"
1918 rv20_encoder_select="h263_encoder"
1919 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1920 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1921 shorten_decoder_select="golomb"
1922 sipr_decoder_select="lsp"
1923 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
1924 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
1925 sonic_decoder_select="golomb"
1926 sonic_encoder_select="golomb"
1927 sonic_ls_encoder_select="golomb"
1928 sp5x_decoder_select="dsputil hpeldsp exif"
1929 svq1_decoder_select="hpeldsp"
1930 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1931 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1932 svq3_decoder_suggest="error_resilience zlib"
1933 tak_decoder_select="dsputil"
1934 theora_decoder_select="vp3_decoder"
1935 tiff_decoder_suggest="zlib"
1936 tiff_encoder_suggest="zlib"
1937 thp_decoder_select="dsputil hpeldsp exif"
1938 truehd_decoder_select="mlp_parser"
1939 truemotion2_decoder_select="dsputil"
1940 truespeech_decoder_select="dsputil"
1941 tscc_decoder_select="zlib"
1942 twinvq_decoder_select="mdct lsp sinewin"
1943 utvideo_decoder_select="dsputil"
1944 utvideo_encoder_select="dsputil huffman"
1945 vble_decoder_select="dsputil"
1946 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1947 vc1image_decoder_select="vc1_decoder"
1948 vorbis_decoder_select="mdct"
1949 vorbis_encoder_select="mdct"
1950 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1951 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1952 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1953 vp6a_decoder_select="vp6_decoder"
1954 vp6f_decoder_select="vp6_decoder"
1955 vp8_decoder_select="h264pred videodsp"
1956 vp9_decoder_select="videodsp"
1957 webp_decoder_select="vp8_decoder"
1958 wmapro_decoder_select="mdct sinewin"
1959 wmav1_decoder_select="mdct sinewin"
1960 wmav1_encoder_select="mdct sinewin"
1961 wmav2_decoder_select="mdct sinewin"
1962 wmav2_encoder_select="mdct sinewin"
1963 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1964 wmv1_decoder_select="h263_decoder"
1965 wmv1_encoder_select="h263_encoder"
1966 wmv2_decoder_select="h263_decoder videodsp"
1967 wmv2_encoder_select="h263_encoder"
1968 wmv3_decoder_select="vc1_decoder"
1969 wmv3image_decoder_select="wmv3_decoder"
1970 zerocodec_decoder_select="zlib"
1971 zlib_decoder_select="zlib"
1972 zlib_encoder_select="zlib"
1973 zmbv_decoder_select="zlib"
1974 zmbv_encoder_select="zlib"
1975
1976 # hardware accelerators
1977 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1978 dxva2_deps="dxva2api_h"
1979 vaapi_deps="va_va_h"
1980 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1981 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1982 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1983
1984 h263_vaapi_hwaccel_deps="vaapi"
1985 h263_vaapi_hwaccel_select="h263_decoder"
1986 h263_vdpau_hwaccel_deps="vdpau"
1987 h263_vdpau_hwaccel_select="h263_decoder"
1988 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1989 h264_dxva2_hwaccel_deps="dxva2"
1990 h264_dxva2_hwaccel_select="h264_decoder"
1991 h264_vaapi_hwaccel_deps="vaapi"
1992 h264_vaapi_hwaccel_select="h264_decoder"
1993 h264_vda_decoder_deps="vda"
1994 h264_vda_decoder_select="h264_decoder"
1995 h264_vda_hwaccel_deps="vda"
1996 h264_vda_hwaccel_select="h264_decoder"
1997 h264_vdpau_decoder_deps="vdpau"
1998 h264_vdpau_decoder_select="h264_decoder"
1999 h264_vdpau_hwaccel_deps="vdpau"
2000 h264_vdpau_hwaccel_select="h264_decoder"
2001 mpeg_vdpau_decoder_deps="vdpau"
2002 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2003 mpeg1_vdpau_decoder_deps="vdpau"
2004 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2005 mpeg1_vdpau_hwaccel_deps="vdpau"
2006 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2007 mpeg2_crystalhd_decoder_select="crystalhd"
2008 mpeg2_dxva2_hwaccel_deps="dxva2"
2009 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2010 mpeg2_vaapi_hwaccel_deps="vaapi"
2011 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2012 mpeg2_vdpau_hwaccel_deps="vdpau"
2013 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2014 mpeg4_crystalhd_decoder_select="crystalhd"
2015 mpeg4_vaapi_hwaccel_deps="vaapi"
2016 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2017 mpeg4_vdpau_decoder_deps="vdpau"
2018 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2019 mpeg4_vdpau_hwaccel_deps="vdpau"
2020 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2021 msmpeg4_crystalhd_decoder_select="crystalhd"
2022 vc1_crystalhd_decoder_select="crystalhd"
2023 vc1_dxva2_hwaccel_deps="dxva2"
2024 vc1_dxva2_hwaccel_select="vc1_decoder"
2025 vc1_vaapi_hwaccel_deps="vaapi"
2026 vc1_vaapi_hwaccel_select="vc1_decoder"
2027 vc1_vdpau_decoder_deps="vdpau"
2028 vc1_vdpau_decoder_select="vc1_decoder"
2029 vc1_vdpau_hwaccel_deps="vdpau"
2030 vc1_vdpau_hwaccel_select="vc1_decoder"
2031 wmv3_crystalhd_decoder_select="crystalhd"
2032 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2033 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2034 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2035 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2036
2037 # parsers
2038 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
2039 hevc_parser_select="hevc_decoder"
2040 mpeg4video_parser_select="error_resilience mpegvideo"
2041 mpegvideo_parser_select="error_resilience mpegvideo"
2042 vc1_parser_select="mpegvideo"
2043
2044 # external libraries
2045 libaacplus_encoder_deps="libaacplus"
2046 libcelt_decoder_deps="libcelt"
2047 libfaac_encoder_deps="libfaac"
2048 libfaac_encoder_select="audio_frame_queue"
2049 libfdk_aac_decoder_deps="libfdk_aac"
2050 libfdk_aac_encoder_deps="libfdk_aac"
2051 libfdk_aac_encoder_select="audio_frame_queue"
2052 libgme_demuxer_deps="libgme"
2053 libgsm_decoder_deps="libgsm"
2054 libgsm_encoder_deps="libgsm"
2055 libgsm_ms_decoder_deps="libgsm"
2056 libgsm_ms_encoder_deps="libgsm"
2057 libilbc_decoder_deps="libilbc"
2058 libilbc_encoder_deps="libilbc"
2059 libmodplug_demuxer_deps="libmodplug"
2060 libmp3lame_encoder_deps="libmp3lame"
2061 libmp3lame_encoder_select="audio_frame_queue"
2062 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2063 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2064 libopencore_amrnb_encoder_select="audio_frame_queue"
2065 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2066 libopenjpeg_decoder_deps="libopenjpeg"
2067 libopenjpeg_encoder_deps="libopenjpeg"
2068 libopus_decoder_deps="libopus"
2069 libopus_encoder_deps="libopus"
2070 libopus_encoder_select="audio_frame_queue"
2071 libquvi_demuxer_deps="libquvi"
2072 libschroedinger_decoder_deps="libschroedinger"
2073 libschroedinger_encoder_deps="libschroedinger"
2074 libshine_encoder_deps="libshine"
2075 libshine_encoder_select="audio_frame_queue"
2076 libspeex_decoder_deps="libspeex"
2077 libspeex_encoder_deps="libspeex"
2078 libspeex_encoder_select="audio_frame_queue"
2079 libstagefright_h264_decoder_deps="libstagefright_h264"
2080 libtheora_encoder_deps="libtheora"
2081 libtwolame_encoder_deps="libtwolame"
2082 libvo_aacenc_encoder_deps="libvo_aacenc"
2083 libvo_aacenc_encoder_select="audio_frame_queue"
2084 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2085 libvorbis_decoder_deps="libvorbis"
2086 libvorbis_encoder_deps="libvorbis"
2087 libvorbis_encoder_select="audio_frame_queue"
2088 libvpx_vp8_decoder_deps="libvpx"
2089 libvpx_vp8_encoder_deps="libvpx"
2090 libvpx_vp9_decoder_deps="libvpx"
2091 libvpx_vp9_encoder_deps="libvpx"
2092 libwavpack_encoder_deps="libwavpack"
2093 libx264_encoder_deps="libx264"
2094 libx264rgb_encoder_deps="libx264"
2095 libxavs_encoder_deps="libxavs"
2096 libxvid_encoder_deps="libxvid"
2097 libutvideo_decoder_deps="libutvideo"
2098 libutvideo_encoder_deps="libutvideo"
2099 libzvbi_teletext_decoder_deps="libzvbi"
2100
2101 # demuxers / muxers
2102 ac3_demuxer_select="ac3_parser"
2103 asf_demuxer_select="riffdec"
2104 asf_muxer_select="riffenc"
2105 asf_stream_muxer_select="asf_muxer"
2106 avi_demuxer_select="riffdec"
2107 avi_muxer_select="riffenc"
2108 avisynth_demuxer_deps="avisynth"
2109 avisynth_demuxer_select="riffdec"
2110 caf_demuxer_select="riffdec"
2111 dirac_demuxer_select="dirac_parser"
2112 dts_demuxer_select="dca_parser"
2113 dtshd_demuxer_select="dca_parser"
2114 dxa_demuxer_select="riffdec"
2115 eac3_demuxer_select="ac3_parser"
2116 f4v_muxer_select="mov_muxer"
2117 flac_demuxer_select="flac_parser"
2118 hls_muxer_select="mpegts_muxer"
2119 ipod_muxer_select="mov_muxer"
2120 ismv_muxer_select="mov_muxer"
2121 libnut_demuxer_deps="libnut"
2122 libnut_muxer_deps="libnut"
2123 matroska_audio_muxer_select="matroska_muxer"
2124 matroska_demuxer_select="riffdec"
2125 matroska_demuxer_suggest="bzlib lzo zlib"
2126 matroska_muxer_select="riffenc"
2127 mmf_muxer_select="riffenc"
2128 mov_demuxer_select="riffdec"
2129 mov_demuxer_suggest="zlib"
2130 mov_muxer_select="riffenc rtpenc_chain"
2131 mp3_demuxer_select="mpegaudio_parser"
2132 mp4_muxer_select="mov_muxer"
2133 mpegts_muxer_select="adts_muxer latm_muxer"
2134 mpegtsraw_demuxer_select="mpegts_demuxer"
2135 mxf_d10_muxer_select="mxf_muxer"
2136 nut_muxer_select="riffenc"
2137 nuv_demuxer_select="riffdec"
2138 ogg_demuxer_select="golomb"
2139 psp_muxer_select="mov_muxer"
2140 rtp_demuxer_select="sdp_demuxer"
2141 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2142 rtsp_demuxer_select="http_protocol rtpdec"
2143 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2144 sap_demuxer_select="sdp_demuxer"
2145 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2146 sdp_demuxer_select="rtpdec"
2147 smoothstreaming_muxer_select="ismv_muxer"
2148 spdif_muxer_select="aac_parser"
2149 tak_demuxer_select="tak_parser"
2150 tg2_muxer_select="mov_muxer"
2151 tgp_muxer_select="mov_muxer"
2152 vobsub_demuxer_select="mpegps_demuxer"
2153 w64_demuxer_select="wav_demuxer"
2154 w64_muxer_select="wav_muxer"
2155 wav_demuxer_select="riffdec"
2156 wav_muxer_select="riffenc"
2157 webm_muxer_select="riffenc"
2158 wtv_demuxer_select="riffdec"
2159 xmv_demuxer_select="riffdec"
2160 xwma_demuxer_select="riffdec"
2161
2162 # indevs / outdevs
2163 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2164 alsa_outdev_deps="alsa_asoundlib_h"
2165 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2166 caca_outdev_deps="libcaca"
2167 dshow_indev_deps="IBaseFilter"
2168 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2169 dv1394_indev_deps="dv1394"
2170 dv1394_indev_select="dv_demuxer"
2171 fbdev_indev_deps="linux_fb_h"
2172 fbdev_outdev_deps="linux_fb_h"
2173 iec61883_indev_deps="libiec61883"
2174 jack_indev_deps="jack_jack_h sem_timedwait"
2175 lavfi_indev_deps="avfilter"
2176 libcdio_indev_deps="libcdio"
2177 libdc1394_indev_deps="libdc1394"
2178 libv4l2_indev_deps="libv4l2"
2179 openal_indev_deps="openal"
2180 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2181 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2182 pulse_indev_deps="libpulse"
2183 pulse_outdev_deps="libpulse"
2184 sdl_outdev_deps="sdl"
2185 sndio_indev_deps="sndio_h"
2186 sndio_outdev_deps="sndio_h"
2187 v4l_indev_deps="linux_videodev_h"
2188 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2189 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2190 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2191 vfwcap_indev_extralibs="-lavicap32"
2192 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2193 xv_outdev_extralibs="-lXv -lX11 -lXext"
2194 x11grab_indev_deps="x11grab"
2195
2196 # protocols
2197 bluray_protocol_deps="libbluray"
2198 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2199 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2200 ffrtmpcrypt_protocol_select="tcp_protocol"
2201 ffrtmphttp_protocol_deps="!librtmp_protocol"
2202 ffrtmphttp_protocol_select="http_protocol"
2203 ftp_protocol_select="tcp_protocol"
2204 gopher_protocol_select="network"
2205 httpproxy_protocol_select="tcp_protocol"
2206 http_protocol_select="tcp_protocol"
2207 https_protocol_select="tls_protocol"
2208 librtmp_protocol_deps="librtmp"
2209 librtmpe_protocol_deps="librtmp"
2210 librtmps_protocol_deps="librtmp"
2211 librtmpt_protocol_deps="librtmp"
2212 librtmpte_protocol_deps="librtmp"
2213 libssh_protocol_deps="libssh"
2214 mmsh_protocol_select="http_protocol"
2215 mmst_protocol_select="network"
2216 rtmp_protocol_deps="!librtmp_protocol"
2217 rtmp_protocol_select="tcp_protocol"
2218 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2219 rtmps_protocol_deps="!librtmp_protocol"
2220 rtmps_protocol_select="tls_protocol"
2221 rtmpt_protocol_select="ffrtmphttp_protocol"
2222 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2223 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2224 rtp_protocol_select="udp_protocol"
2225 sctp_protocol_deps="struct_sctp_event_subscribe"
2226 sctp_protocol_select="network"
2227 srtp_protocol_select="rtp_protocol"
2228 tcp_protocol_select="network"
2229 tls_protocol_deps_any="openssl gnutls"
2230 tls_protocol_select="tcp_protocol"
2231 udp_protocol_select="network"
2232 unix_protocol_deps="sys_un_h"
2233 unix_protocol_select="network"
2234
2235 # filters
2236 aconvert_filter_deps="swresample"
2237 amovie_filter_deps="avcodec avformat"
2238 aresample_filter_deps="swresample"
2239 ass_filter_deps="libass"
2240 asyncts_filter_deps="avresample"
2241 atempo_filter_deps="avcodec"
2242 atempo_filter_select="rdft"
2243 azmq_filter_deps="libzmq"
2244 blackframe_filter_deps="gpl"
2245 boxblur_filter_deps="gpl"
2246 colormatrix_filter_deps="gpl"
2247 cropdetect_filter_deps="gpl"
2248 dctdnoiz_filter_deps="avcodec"
2249 dctdnoiz_filter_select="fft"
2250 delogo_filter_deps="gpl"
2251 deshake_filter_deps="avcodec"
2252 deshake_filter_select="dsputil"
2253 drawtext_filter_deps="libfreetype"
2254 ebur128_filter_deps="gpl"
2255 flite_filter_deps="libflite"
2256 frei0r_filter_deps="frei0r dlopen"
2257 frei0r_filter_extralibs='$ldl'
2258 frei0r_src_filter_deps="frei0r dlopen"
2259 frei0r_src_filter_extralibs='$ldl'
2260 geq_filter_deps="gpl"
2261 histeq_filter_deps="gpl"
2262 hqdn3d_filter_deps="gpl"
2263 interlace_filter_deps="gpl"
2264 kerndeint_filter_deps="gpl"
2265 ladspa_filter_deps="ladspa dlopen"
2266 mcdeint_filter_deps="avcodec gpl"
2267 movie_filter_deps="avcodec avformat"
2268 mp_filter_deps="gpl avcodec swscale inline_asm"
2269 mpdecimate_filter_deps="gpl avcodec"
2270 mptestsrc_filter_deps="gpl"
2271 negate_filter_deps="lut_filter"
2272 perspective_filter_deps="gpl"
2273 resample_filter_deps="avresample"
2274 ocv_filter_deps="libopencv"
2275 owdenoise_filter_deps="gpl"
2276 pan_filter_deps="swresample"
2277 phase_filter_deps="gpl"
2278 pp_filter_deps="gpl postproc"
2279 pullup_filter_deps="gpl"
2280 removelogo_filter_deps="avcodec avformat swscale"
2281 sab_filter_deps="gpl swscale"
2282 scale_filter_deps="swscale"
2283 smartblur_filter_deps="gpl swscale"
2284 showspectrum_filter_deps="avcodec"
2285 showspectrum_filter_select="rdft"
2286 spp_filter_deps="gpl avcodec"
2287 spp_filter_select="fft"
2288 stereo3d_filter_deps="gpl"
2289 subtitles_filter_deps="avformat avcodec libass"
2290 super2xsai_filter_deps="gpl"
2291 tinterlace_filter_deps="gpl"
2292 vidstabdetect_filter_deps="libvidstab"
2293 vidstabtransform_filter_deps="libvidstab"
2294 yadif_filter_deps="gpl"
2295 pixfmts_super2xsai_test_deps="super2xsai_filter"
2296 tinterlace_merge_test_deps="tinterlace_filter"
2297 tinterlace_pad_test_deps="tinterlace_filter"
2298 zmq_filter_deps="libzmq"
2299
2300 # libraries
2301 avcodec_deps="avutil"
2302 avdevice_deps="avutil avcodec avformat"
2303 avfilter_deps="avutil"
2304 avformat_deps="avutil avcodec"
2305 avresample_deps="avutil"
2306 postproc_deps="avutil gpl"
2307 swscale_deps="avutil"
2308
2309 # programs
2310 ffmpeg_deps="avcodec avfilter avformat swresample"
2311 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2312                null_filter
2313                setpts_filter trim_filter"
2314 ffplay_deps="avcodec avformat swscale swresample sdl"
2315 ffplay_select="rdft crop_filter"
2316 ffprobe_deps="avcodec avformat"
2317 ffserver_deps="avformat fork sarestart"
2318 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2319 ffserver_extralibs='$ldl'
2320
2321 # documentation
2322 podpages_deps="perl"
2323 manpages_deps="perl pod2man"
2324 htmlpages_deps="texi2html"
2325 txtpages_deps="makeinfo"
2326 doc_deps_any="manpages htmlpages podpages txtpages"
2327
2328 # default parameters
2329
2330 logfile="config.log"
2331
2332 # installation paths
2333 prefix_default="/usr/local"
2334 bindir_default='${prefix}/bin'
2335 datadir_default='${prefix}/share/ffmpeg'
2336 docdir_default='${prefix}/share/doc/ffmpeg'
2337 incdir_default='${prefix}/include'
2338 libdir_default='${prefix}/lib'
2339 mandir_default='${prefix}/share/man'
2340 shlibdir_default="$libdir_default"
2341
2342 # toolchain
2343 ar_default="ar"
2344 cc_default="gcc"
2345 cxx_default="g++"
2346 host_cc_default="gcc"
2347 cp_f="cp -f"
2348 install="install"
2349 ln_s="ln -s -f"
2350 nm_default="nm -g"
2351 objformat="elf"
2352 pkg_config_default=pkg-config
2353 ranlib="ranlib"
2354 strip_default="strip"
2355 yasmexe_default="yasm"
2356
2357 nogas=":"
2358
2359 # machine
2360 arch_default=$(uname -m)
2361 cpu="generic"
2362
2363 # OS
2364 target_os_default=$(tolower $(uname -s))
2365 host_os=$target_os_default
2366
2367 # configurable options
2368 enable $PROGRAM_LIST
2369 enable $DOCUMENT_LIST
2370 enable $(filter_out avresample $LIBRARY_LIST)
2371 enable stripping
2372
2373 enable asm
2374 enable debug
2375 enable doc
2376 enable optimizations
2377 enable runtime_cpudetect
2378 enable safe_bitstream_reader
2379 enable static
2380 enable swscale_alpha
2381
2382 # Enable hwaccels by default.
2383 enable dxva2 vaapi vdpau
2384
2385 # build settings
2386 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2387 LIBPREF="lib"
2388 LIBSUF=".a"
2389 FULLNAME='$(NAME)$(BUILDSUF)'
2390 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2391 SLIBPREF="lib"
2392 SLIBSUF=".so"
2393 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2394 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2395 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2396 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2397 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2398 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2399
2400 asflags_filter=echo
2401 cflags_filter=echo
2402 ldflags_filter=echo
2403
2404 AS_C='-c'
2405 AS_O='-o $@'
2406 CC_C='-c'
2407 CC_E='-E -o $@'
2408 CC_O='-o $@'
2409 CXX_C='-c'
2410 CXX_O='-o $@'
2411 LD_O='-o $@'
2412 LD_LIB='-l%'
2413 LD_PATH='-L'
2414 HOSTCC_C='-c'
2415 HOSTCC_O='-o $@'
2416 HOSTLD_O='-o $@'
2417
2418 host_cflags='-O3 -g'
2419 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2420 host_libs='-lm'
2421 host_cflags_filter=echo
2422 host_ldflags_filter=echo
2423
2424 target_path='$(CURDIR)'
2425
2426 # since the object filename is not given with the -MM flag, the compiler
2427 # is only able to print the basename, and we must add the path ourselves
2428 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2429 DEPFLAGS='-MM'
2430
2431 # find source path
2432 if test -f configure; then
2433     source_path=.
2434 else
2435     source_path=$(cd $(dirname "$0"); pwd)
2436     echo "$source_path" | grep -q '[[:blank:]]' &&
2437         die "Out of tree builds are impossible with whitespace in source path."
2438     test -e "$source_path/config.h" &&
2439         die "Out of tree builds are impossible with config.h in source dir."
2440 fi
2441
2442 for v in "$@"; do
2443     r=${v#*=}
2444     l=${v%"$r"}
2445     r=$(sh_quote "$r")
2446     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2447 done
2448
2449 find_things(){
2450     thing=$1
2451     pattern=$2
2452     file=$source_path/$3
2453     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2454 }
2455
2456 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2457 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2458 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2459 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2460 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2461 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2462 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2463 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2464 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2465 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2466 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2467
2468 ALL_COMPONENTS="
2469     $BSF_LIST
2470     $DECODER_LIST
2471     $DEMUXER_LIST
2472     $ENCODER_LIST
2473     $FILTER_LIST
2474     $HWACCEL_LIST
2475     $INDEV_LIST
2476     $MUXER_LIST
2477     $OUTDEV_LIST
2478     $PARSER_LIST
2479     $PROTOCOL_LIST
2480 "
2481
2482 for n in $COMPONENT_LIST; do
2483     v=$(toupper ${n%s})_LIST
2484     eval enable \$$v
2485     eval ${n}_if_any="\$$v"
2486 done
2487
2488 enable $ARCH_EXT_LIST
2489
2490 die_unknown(){
2491     echo "Unknown option \"$1\"."
2492     echo "See $0 --help for available options."
2493     exit 1
2494 }
2495
2496 print_3_columns() {
2497     cat | tr ' ' '\n' | sort | pr -r -3 -t
2498 }
2499
2500 show_list() {
2501     suffix=_$1
2502     shift
2503     echo $* | sed s/$suffix//g | print_3_columns
2504     exit 0
2505 }
2506
2507 rand_list(){
2508     IFS=', '
2509     set -- $*
2510     unset IFS
2511     for thing; do
2512         comp=${thing%:*}
2513         prob=${thing#$comp}
2514         prob=${prob#:}
2515         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2516         echo "prob ${prob:-0.5}"
2517         printf '%s\n' $comp
2518     done
2519 }
2520
2521 do_random(){
2522     action=$1
2523     shift
2524     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2525     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2526 }
2527
2528 for opt do
2529     optval="${opt#*=}"
2530     case "$opt" in
2531         --extra-ldflags=*)
2532             add_ldflags $optval
2533         ;;
2534         --extra-libs=*)
2535             add_extralibs $optval
2536         ;;
2537         --disable-devices)
2538             disable $INDEV_LIST $OUTDEV_LIST
2539         ;;
2540         --enable-debug=*)
2541             debuglevel="$optval"
2542         ;;
2543         --disable-programs)
2544             disable $PROGRAM_LIST
2545         ;;
2546         --disable-everything)
2547             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2548         ;;
2549         --disable-all)
2550             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2551             disable $LIBRARY_LIST $PROGRAM_LIST doc
2552         ;;
2553         --enable-random|--disable-random)
2554             action=${opt%%-random}
2555             do_random ${action#--} $COMPONENT_LIST
2556         ;;
2557         --enable-random=*|--disable-random=*)
2558             action=${opt%%-random=*}
2559             do_random ${action#--} $optval
2560         ;;
2561         --enable-*=*|--disable-*=*)
2562             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2563             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2564             eval list=\$$(toupper $thing)_LIST
2565             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2566             list=$(filter "$name" $list)
2567             [ "$list" = "" ] && warn "Option $opt did not match anything"
2568             $action $list
2569         ;;
2570         --enable-?*|--disable-?*)
2571             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2572             if is_in $option $COMPONENT_LIST; then
2573                 test $action = disable && action=unset
2574                 eval $action \$$(toupper ${option%s})_LIST
2575             elif is_in $option $CMDLINE_SELECT; then
2576                 $action $option
2577             else
2578                 die_unknown $opt
2579             fi
2580         ;;
2581         --list-*)
2582             NAME="${opt#--list-}"
2583             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2584             NAME=${NAME%s}
2585             eval show_list $NAME \$$(toupper $NAME)_LIST
2586         ;;
2587         --help|-h) show_help
2588         ;;
2589         --fatal-warnings) enable fatal_warnings
2590         ;;
2591         *)
2592             optname="${opt%%=*}"
2593             optname="${optname#--}"
2594             optname=$(echo "$optname" | sed 's/-/_/g')
2595             if is_in $optname $CMDLINE_SET; then
2596                 eval $optname='$optval'
2597             elif is_in $optname $CMDLINE_APPEND; then
2598                 append $optname "$optval"
2599             else
2600                 die_unknown $opt
2601             fi
2602         ;;
2603     esac
2604 done
2605
2606 disabled logging && logfile=/dev/null
2607
2608 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2609 set >> $logfile
2610
2611 test -n "$cross_prefix" && enable cross_compile
2612
2613 if enabled cross_compile; then
2614     test -n "$arch" && test -n "$target_os" ||
2615         die "Must specify target arch and OS when cross-compiling"
2616 fi
2617
2618 ar_default="${cross_prefix}${ar_default}"
2619 cc_default="${cross_prefix}${cc_default}"
2620 cxx_default="${cross_prefix}${cxx_default}"
2621 nm_default="${cross_prefix}${nm_default}"
2622 pkg_config_default="${cross_prefix}${pkg_config_default}"
2623 ranlib="${cross_prefix}${ranlib}"
2624 strip_default="${cross_prefix}${strip_default}"
2625
2626 sysinclude_default="${sysroot}/usr/include"
2627
2628 test -n "$valgrind" && toolchain="valgrind-memcheck"
2629
2630 case "$toolchain" in
2631     clang-asan)
2632         cc_default="clang"
2633         add_cflags  -fsanitize=address
2634         add_ldflags -fsanitize=address
2635     ;;
2636     clang-tsan)
2637         cc_default="clang"
2638         add_cflags  -fsanitize=thread -pie
2639         add_ldflags -fsanitize=thread -pie
2640     ;;
2641     gcc-asan)
2642         cc_default="gcc"
2643         add_cflags  -fsanitize=address
2644         add_ldflags -fsanitize=address
2645     ;;
2646     gcc-tsan)
2647         cc_default="gcc"
2648         add_cflags  -fsanitize=thread -pie -fPIC
2649         add_ldflags -fsanitize=thread -pie -fPIC
2650     ;;
2651     valgrind-massif)
2652         target_exec_default=${valgrind:-"valgrind"}
2653         target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
2654     ;;
2655     valgrind-memcheck)
2656         target_exec_default=${valgrind:-"valgrind"}
2657         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2658     ;;
2659     msvc)
2660         cc_default="c99wrap cl"
2661         ld_default="c99wrap link"
2662         nm_default="dumpbin -symbols"
2663         ar_default="lib"
2664         target_os_default="win32"
2665     ;;
2666     icl)
2667         cc_default="c99wrap -noconv icl"
2668         ld_default="c99wrap xilink"
2669         nm_default="dumpbin -symbols"
2670         ar_default="xilib"
2671         target_os_default="win32"
2672     ;;
2673     gcov)
2674         add_cflags  -fprofile-arcs -ftest-coverage
2675         add_ldflags -fprofile-arcs -ftest-coverage
2676     ;;
2677     ?*)
2678         die "Unknown toolchain $toolchain"
2679     ;;
2680 esac
2681
2682 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2683 enabled cross_compile || host_cc_default=$cc
2684 set_default host_cc
2685
2686 if ! $pkg_config --version >/dev/null 2>&1; then
2687     warn "$pkg_config not found, library detection may fail."
2688     pkg_config=false
2689 fi
2690
2691 exesuf() {
2692     case $1 in
2693         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2694     esac
2695 }
2696
2697 EXESUF=$(exesuf $target_os)
2698 HOSTEXESUF=$(exesuf $host_os)
2699
2700 # set temporary file name
2701 : ${TMPDIR:=$TEMPDIR}
2702 : ${TMPDIR:=$TMP}
2703 : ${TMPDIR:=/tmp}
2704
2705 if [ -n "$tempprefix" ] ; then
2706     mktemp(){
2707         echo $tempprefix.${HOSTNAME}.${UID}
2708     }
2709 elif ! check_cmd mktemp -u XXXXXX; then
2710     # simple replacement for missing mktemp
2711     # NOT SAFE FOR GENERAL USE
2712     mktemp(){
2713         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2714     }
2715 fi
2716
2717 tmpfile(){
2718     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2719         (set -C; exec > $tmp) 2>/dev/null ||
2720         die "Unable to create temporary file in $TMPDIR."
2721     append TMPFILES $tmp
2722     eval $1=$tmp
2723 }
2724
2725 trap 'rm -f -- $TMPFILES' EXIT
2726
2727 tmpfile TMPASM .asm
2728 tmpfile TMPC   .c
2729 tmpfile TMPCPP .cpp
2730 tmpfile TMPE   $EXESUF
2731 tmpfile TMPH   .h
2732 tmpfile TMPO   .o
2733 tmpfile TMPS   .S
2734 tmpfile TMPSH  .sh
2735 tmpfile TMPV   .ver
2736
2737 unset -f mktemp
2738
2739 chmod +x $TMPE
2740
2741 # make sure we can execute files in $TMPDIR
2742 cat > $TMPSH 2>> $logfile <<EOF
2743 #! /bin/sh
2744 EOF
2745 chmod +x $TMPSH >> $logfile 2>&1
2746 if ! $TMPSH >> $logfile 2>&1; then
2747     cat <<EOF
2748 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2749 variable to another directory and make sure that it is not mounted noexec.
2750 EOF
2751     die "Sanity test failed."
2752 fi
2753
2754 ccc_flags(){
2755     for flag; do
2756         case $flag in
2757             -std=c99)           echo -c99                       ;;
2758             -mcpu=*)            echo -arch ${flag#*=}           ;;
2759             -mieee)             echo -ieee                      ;;
2760             -O*|-fast)          echo $flag                      ;;
2761             -fno-math-errno)    echo -assume nomath_errno       ;;
2762             -g)                 echo -g3                        ;;
2763             -Wall)              echo -msg_enable level2         ;;
2764             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2765             -Wl,*)              echo $flag                      ;;
2766             -f*|-W*)                                            ;;
2767             *)                  echo $flag                      ;;
2768         esac
2769    done
2770 }
2771
2772 cparser_flags(){
2773     for flag; do
2774         case $flag in
2775             -Wno-switch)             echo -Wno-switch-enum ;;
2776             -Wno-format-zero-length) ;;
2777             -Wdisabled-optimization) ;;
2778             -Wno-pointer-sign)       echo -Wno-other ;;
2779             *)                       echo $flag ;;
2780         esac
2781     done
2782 }
2783
2784 msvc_common_flags(){
2785     for flag; do
2786         case $flag in
2787             # In addition to specifying certain flags under the compiler
2788             # specific filters, they must be specified here as well or else the
2789             # generic catch all at the bottom will print the original flag.
2790             -Wall)                ;;
2791             -std=c99)             ;;
2792             # Common flags
2793             -fomit-frame-pointer) ;;
2794             -g)                   echo -Z7 ;;
2795             -fno-math-errno)      ;;
2796             -fno-common)          ;;
2797             -fno-signed-zeros)    ;;
2798             -fPIC)                ;;
2799             -mthumb)              ;;
2800             -march=*)             ;;
2801             -lz)                  echo zlib.lib ;;
2802             -lavifil32)           echo vfw32.lib ;;
2803             -lavicap32)           echo vfw32.lib user32.lib ;;
2804             -l*)                  echo ${flag#-l}.lib ;;
2805             *)                    echo $flag ;;
2806         esac
2807     done
2808 }
2809
2810 msvc_flags(){
2811     msvc_common_flags "$@"
2812     for flag; do
2813         case $flag in
2814             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2815                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2816                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2817                                        -wd4554 \
2818                                        -wd4273 ;;
2819         esac
2820     done
2821 }
2822
2823 icl_flags(){
2824     msvc_common_flags "$@"
2825     for flag; do
2826         case $flag in
2827             # Despite what Intel's documentation says -Wall, which is supported
2828             # on Windows, does enable remarks so disable them here.
2829             -Wall)                echo $flag -Qdiag-disable:remark ;;
2830             -std=c99)             echo -Qstd=c99 ;;
2831         esac
2832     done
2833 }
2834
2835 pgi_flags(){
2836     for flag; do
2837         case $flag in
2838             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2839             -fomit-frame-pointer) echo -Mnoframe ;;
2840             -g)                   echo -gopt ;;
2841             *)                    echo $flag ;;
2842         esac
2843     done
2844 }
2845
2846 suncc_flags(){
2847     for flag; do
2848         case $flag in
2849             -march=*|-mcpu=*)
2850                 case "${flag#*=}" in
2851                     native)                   echo -xtarget=native       ;;
2852                     v9|niagara)               echo -xarch=sparc          ;;
2853                     ultrasparc)               echo -xarch=sparcvis       ;;
2854                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2855                     i586|pentium)             echo -xchip=pentium        ;;
2856                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2857                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2858                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2859                     pentium4*)          echo -xtarget=pentium4           ;;
2860                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2861                     *-sse3)             echo -xarch=sse3                 ;;
2862                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2863                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2864                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2865                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
2866                     bdver*)                    echo -xarch=avx           ;;
2867                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2868                     k8|opteron|athlon64|athlon-fx)
2869                                                echo -xarch=sse2a         ;;
2870                     athlon*)                   echo -xarch=pentium_proa  ;;
2871                 esac
2872                 ;;
2873             -std=c99)             echo -xc99              ;;
2874             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2875             -fPIC)                echo -KPIC -xcode=pic32 ;;
2876             -W*,*)                echo $flag              ;;
2877             -f*-*|-W*|-mimpure-text)                      ;;
2878             -shared)              echo -G                 ;;
2879             *)                    echo $flag              ;;
2880         esac
2881     done
2882 }
2883
2884 tms470_flags(){
2885     for flag; do
2886         case $flag in
2887             -march=*|-mcpu=*)
2888                 case "${flag#*=}" in
2889                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2890                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2891                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2892                     armv6*|arm11*)          echo -mv=6   ;;
2893                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2894                                             echo -mv=5e  ;;
2895                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2896                 esac
2897                 ;;
2898             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2899             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2900             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2901             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2902             -msoft-float)   echo --float_support=vfplib       ;;
2903             -O[0-3]|-mf=*)  echo $flag                        ;;
2904             -g)             echo -g -mn                       ;;
2905             -pds=*)         echo $flag                        ;;
2906             -D*|-I*)        echo $flag                        ;;
2907             --gcc|--abi=*)  echo $flag                        ;;
2908             -me)            echo $flag                        ;;
2909         esac
2910     done
2911 }
2912
2913 probe_cc(){
2914     pfx=$1
2915     _cc=$2
2916
2917     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2918     unset _ld_o _ldflags _ld_lib _ld_path
2919     unset _depflags _DEPCMD _DEPFLAGS
2920     _flags_filter=echo
2921
2922     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
2923         true # no-op to avoid reading stdin in following checks
2924     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2925         _type=llvm_gcc
2926         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2927         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2928         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2929         _cflags_speed='-O3'
2930         _cflags_size='-Os'
2931     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2932         _type=gcc
2933         gcc_version=$($_cc --version | head -n1)
2934         gcc_basever=$($_cc -dumpversion)
2935         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2936         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2937         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2938         if ! $_cc -dumpversion | grep -q '^2\.'; then
2939             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2940         fi
2941         _cflags_speed='-O3'
2942         _cflags_size='-Os'
2943     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2944         _type=icc
2945         _ident=$($_cc --version | head -n1)
2946         _depflags='-MMD'
2947         _cflags_speed='-O3'
2948         _cflags_size='-Os'
2949         _cflags_noopt='-O1'
2950     elif $_cc -v 2>&1 | grep -q xlc; then
2951         _type=xlc
2952         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2953         _cflags_speed='-O5'
2954         _cflags_size='-O5 -qcompact'
2955     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2956         _type=ccc
2957         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2958         _DEPFLAGS='-M'
2959         _cflags_speed='-fast'
2960         _cflags_size='-O1'
2961         _flags_filter=ccc_flags
2962     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2963         test -d "$sysroot" || die "No valid sysroot specified."
2964         _type=armcc
2965         _ident=$($_cc --vsn | head -n1)
2966         armcc_conf="$PWD/armcc.conf"
2967         $_cc --arm_linux_configure                 \
2968              --arm_linux_config_file="$armcc_conf" \
2969              --configure_sysroot="$sysroot"        \
2970              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2971              die "Error creating armcc configuration file."
2972         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2973         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2974         as_default="${cross_prefix}gcc"
2975         _depflags='-MMD'
2976         _cflags_speed='-O3'
2977         _cflags_size='-Os'
2978     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2979         _type=tms470
2980         _ident=$($_cc -version | head -n1 | tr -s ' ')
2981         _flags='--gcc --abi=eabi -me'
2982         _cc_e='-ppl -fe=$@'
2983         _cc_o='-fe=$@'
2984         _depflags='-ppa -ppd=$(@:.o=.d)'
2985         _cflags_speed='-O3 -mf=5'
2986         _cflags_size='-O3 -mf=2'
2987         _flags_filter=tms470_flags
2988     elif $_cc -v 2>&1 | grep -q clang; then
2989         _type=clang
2990         _ident=$($_cc --version | head -n1)
2991         _depflags='-MMD'
2992         _cflags_speed='-O3'
2993         _cflags_size='-Os'
2994     elif $_cc -V 2>&1 | grep -q Sun; then
2995         _type=suncc
2996         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2997         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2998         _DEPFLAGS='-xM1 -xc99'
2999         _ldflags='-std=c99'
3000         _cflags_speed='-O5'
3001         _cflags_size='-O5 -xspace'
3002         _flags_filter=suncc_flags
3003     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3004         _type=pathscale
3005         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3006         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3007         _cflags_speed='-O2'
3008         _cflags_size='-Os'
3009         _flags_filter='filter_out -Wdisabled-optimization'
3010     elif $_cc -v 2>&1 | grep -q Open64; then
3011         _type=open64
3012         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3013         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3014         _cflags_speed='-O2'
3015         _cflags_size='-Os'
3016         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3017     elif $_cc -V 2>&1 | grep -q Portland; then
3018         _type=pgi
3019         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3020         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3021         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3022         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3023         _cflags_noopt="-O"
3024         _flags_filter=pgi_flags
3025     elif $_cc 2>&1 | grep -q Microsoft; then
3026         _type=msvc
3027         _ident=$($cc 2>&1 | head -n1)
3028         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3029         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3030         _cflags_speed="-O2"
3031         _cflags_size="-O1"
3032         # Nonstandard output options, to avoid msys path conversion issues.
3033         # Relies on wrapper to remap it.
3034         if $_cc 2>&1 | grep -q Linker; then
3035             _ld_o='-out $@'
3036         else
3037             _ld_o='-Fe$@'
3038         fi
3039         _cc_o='-Fo $@'
3040         _cc_e='-P -Fi $@'
3041         _flags_filter=msvc_flags
3042         _ld_lib='lib%.a'
3043         _ld_path='-libpath:'
3044         _flags='-nologo'
3045         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3046         if [ $pfx = hostcc ]; then
3047             append _cflags -Dsnprintf=_snprintf
3048         fi
3049         disable stripping
3050     elif $_cc 2>&1 | grep -q Intel; then
3051         _type=icl
3052         _ident=$($cc 2>&1 | head -n1)
3053         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3054         # Not only is O3 broken on 13.x+ but it is slower on all previous
3055         # versions (tested) as well.
3056         _cflags_speed="-O2"
3057         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3058         # Nonstandard output options, to avoid msys path conversion issues.
3059         # Relies on wrapper to remap it.
3060         if $_cc 2>&1 | grep -q Linker; then
3061             _ld_o='-out $@'
3062         else
3063             _ld_o='-Fe$@'
3064         fi
3065         _cc_o='-Fo $@'
3066         _cc_e='-P'
3067         _flags_filter=icl_flags
3068         _ld_lib='lib%.a'
3069         _ld_path='-libpath:'
3070         # -Qdiag-error to make icl error when seeing certain unknown arguments
3071         _flags='-nologo -Qdiag-error:4044,10157'
3072         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3073         # with MSVC which enables it by default.
3074         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3075         if [ $pfx = hostcc ]; then
3076             append _cflags -Dsnprintf=_snprintf
3077         fi
3078     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3079         _type=cparser
3080         _ident=$($_cc --version | head -n1)
3081         _depflags='-MMD'
3082         _cflags_speed='-O4'
3083         _cflags_size='-O2'
3084         _flags_filter=cparser_flags
3085     fi
3086
3087     eval ${pfx}_type=\$_type
3088     eval ${pfx}_ident=\$_ident
3089 }
3090
3091 set_ccvars(){
3092     eval ${1}_C=\${_cc_c-\${${1}_C}}
3093     eval ${1}_E=\${_cc_e-\${${1}_E}}
3094     eval ${1}_O=\${_cc_o-\${${1}_O}}
3095
3096     if [ -n "$_depflags" ]; then
3097         eval ${1}_DEPFLAGS=\$_depflags
3098     else
3099         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3100         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3101         eval DEP${1}FLAGS=\$_flags
3102     fi
3103 }
3104
3105 probe_cc cc "$cc"
3106 cflags_filter=$_flags_filter
3107 cflags_speed=$_cflags_speed
3108 cflags_size=$_cflags_size
3109 cflags_noopt=$_cflags_noopt
3110 add_cflags $_flags $_cflags
3111 cc_ldflags=$_ldflags
3112 set_ccvars CC
3113
3114 probe_cc hostcc "$host_cc"
3115 host_cflags_filter=$_flags_filter
3116 add_host_cflags  $_flags $_cflags
3117 set_ccvars HOSTCC
3118
3119 test -n "$cc_type" && enable $cc_type ||
3120     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3121
3122 : ${as_default:=$cc}
3123 : ${dep_cc_default:=$cc}
3124 : ${ld_default:=$cc}
3125 : ${host_ld_default:=$host_cc}
3126 set_default ar as dep_cc ld host_ld
3127
3128 probe_cc as "$as"
3129 asflags_filter=$_flags_filter
3130 add_asflags $_flags $_cflags
3131 set_ccvars AS
3132
3133 probe_cc ld "$ld"
3134 ldflags_filter=$_flags_filter
3135 add_ldflags $_flags $_ldflags
3136 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3137 LD_O=${_ld_o-$LD_O}
3138 LD_LIB=${_ld_lib-$LD_LIB}
3139 LD_PATH=${_ld_path-$LD_PATH}
3140
3141 probe_cc hostld "$host_ld"
3142 host_ldflags_filter=$_flags_filter
3143 add_host_ldflags $_flags $_ldflags
3144 HOSTLD_O=${_ld_o-$HOSTLD_O}
3145
3146 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3147     probe_cc depcc "$dep_cc"
3148     CCDEP=${_DEPCMD:-$DEPCMD}
3149     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3150     DEPCCFLAGS=$_flags
3151 fi
3152
3153 if $ar 2>&1 | grep -q Microsoft; then
3154     arflags="-nologo"
3155     ar_o='-out:$@'
3156 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3157     arflags="rq"
3158     ar_o='$@'
3159 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3160     arflags='-Xany -r -c'
3161     ar_o='$@'
3162 else
3163     arflags="rc"
3164     ar_o='$@'
3165 fi
3166
3167 add_cflags $extra_cflags
3168 add_cxxflags $extra_cxxflags
3169 add_asflags $extra_cflags
3170
3171 if test -n "$sysroot"; then
3172     case "$cc_type" in
3173         gcc|llvm_gcc|clang)
3174             add_cppflags --sysroot="$sysroot"
3175             add_ldflags --sysroot="$sysroot"
3176         ;;
3177         tms470)
3178             add_cppflags -I"$sysinclude"
3179             add_ldflags  --sysroot="$sysroot"
3180         ;;
3181     esac
3182 fi
3183
3184 if test "$cpu" = host; then
3185     enabled cross_compile &&
3186         die "--cpu=host makes no sense when cross-compiling."
3187
3188     case "$cc_type" in
3189         gcc|llvm_gcc)
3190             check_native(){
3191                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3192                 sed -n "/cc1.*$1=/{
3193                             s/.*$1=\\([^ ]*\\).*/\\1/
3194                             p
3195                             q
3196                         }" $TMPE
3197             }
3198             cpu=$(check_native -march || check_native -mcpu)
3199         ;;
3200     esac
3201
3202     test "${cpu:-host}" = host &&
3203         die "--cpu=host not supported with compiler $cc"
3204 fi
3205
3206 # Deal with common $arch aliases
3207 case "$arch" in
3208     aarch64|arm64)
3209         arch="aarch64"
3210     ;;
3211     arm*|iPad*|iPhone*)
3212         arch="arm"
3213     ;;
3214     mips*|IP*)
3215         arch="mips"
3216     ;;
3217     parisc*|hppa*)
3218         arch="parisc"
3219     ;;
3220     "Power Macintosh"|ppc*|powerpc*)
3221         arch="ppc"
3222     ;;
3223     s390|s390x)
3224         arch="s390"
3225     ;;
3226     sh4|sh)
3227         arch="sh4"
3228     ;;
3229     sun4u|sparc*)
3230         arch="sparc"
3231     ;;
3232     tilegx|tile-gx)
3233         arch="tilegx"
3234     ;;
3235     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3236         arch="x86"
3237     ;;
3238 esac
3239
3240 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3241 enable $arch
3242
3243 # Add processor-specific flags
3244 if enabled aarch64; then
3245
3246     case $cpu in
3247         armv*)
3248             cpuflags="-march=$cpu"
3249         ;;
3250         *)
3251             cpuflags="-mcpu=$cpu"
3252         ;;
3253     esac
3254
3255 elif enabled alpha; then
3256
3257     cpuflags="-mcpu=$cpu"
3258
3259 elif enabled arm; then
3260
3261     check_arm_arch() {
3262         check_cpp_condition stddef.h \
3263             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3264             $cpuflags
3265     }
3266
3267     probe_arm_arch() {
3268         if   check_arm_arch 4;        then echo armv4;
3269         elif check_arm_arch 4T;       then echo armv4t;
3270         elif check_arm_arch 5;        then echo armv5;
3271         elif check_arm_arch 5E;       then echo armv5e;
3272         elif check_arm_arch 5T;       then echo armv5t;
3273         elif check_arm_arch 5TE;      then echo armv5te;
3274         elif check_arm_arch 5TEJ;     then echo armv5te;
3275         elif check_arm_arch 6;        then echo armv6;
3276         elif check_arm_arch 6J;       then echo armv6j;
3277         elif check_arm_arch 6K;       then echo armv6k;
3278         elif check_arm_arch 6Z;       then echo armv6z;
3279         elif check_arm_arch 6ZK;      then echo armv6zk;
3280         elif check_arm_arch 6T2;      then echo armv6t2;
3281         elif check_arm_arch 7;        then echo armv7;
3282         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3283         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3284         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3285         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3286         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3287         fi
3288     }
3289
3290     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3291
3292     case $cpu in
3293         armv*)
3294             cpuflags="-march=$cpu"
3295             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3296         ;;
3297         *)
3298             cpuflags="-mcpu=$cpu"
3299             case $cpu in
3300                 cortex-a*)                               subarch=armv7a  ;;
3301                 cortex-r*)                               subarch=armv7r  ;;
3302                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3303                 arm11*)                                  subarch=armv6   ;;
3304                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3305                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3306                 *)                             subarch=$(probe_arm_arch) ;;
3307             esac
3308         ;;
3309     esac
3310
3311     case "$subarch" in
3312         armv5t*)    enable fast_clz                ;;
3313         armv[6-8]*) enable fast_clz fast_unaligned ;;
3314     esac
3315
3316 elif enabled avr32; then
3317
3318     case $cpu in
3319         ap7[02]0[0-2])
3320             subarch="avr32_ap"
3321             cpuflags="-mpart=$cpu"
3322         ;;
3323         ap)
3324             subarch="avr32_ap"
3325             cpuflags="-march=$cpu"
3326         ;;
3327         uc3[ab]*)
3328             subarch="avr32_uc"
3329             cpuflags="-mcpu=$cpu"
3330         ;;
3331         uc)
3332             subarch="avr32_uc"
3333             cpuflags="-march=$cpu"
3334         ;;
3335     esac
3336
3337 elif enabled bfin; then
3338
3339     cpuflags="-mcpu=$cpu"
3340
3341 elif enabled mips; then
3342
3343     cpuflags="-march=$cpu"
3344
3345     case $cpu in
3346         24kc)
3347             disable mipsfpu
3348             disable mipsdspr1
3349             disable mipsdspr2
3350         ;;
3351         24kf*)
3352             disable mipsdspr1
3353             disable mipsdspr2
3354         ;;
3355         24kec|34kc|1004kc)
3356             disable mipsfpu
3357             disable mipsdspr2
3358         ;;
3359         24kef*|34kf*|1004kf*)
3360             disable mipsdspr2
3361         ;;
3362         74kc)
3363             disable mipsfpu
3364         ;;
3365     esac
3366
3367 elif enabled ppc; then
3368
3369     case $(tolower $cpu) in
3370         601|ppc601|powerpc601)
3371             cpuflags="-mcpu=601"
3372             disable altivec
3373         ;;
3374         603*|ppc603*|powerpc603*)
3375             cpuflags="-mcpu=603"
3376             disable altivec
3377         ;;
3378         604*|ppc604*|powerpc604*)
3379             cpuflags="-mcpu=604"
3380             disable altivec
3381         ;;
3382         g3|75*|ppc75*|powerpc75*)
3383             cpuflags="-mcpu=750"
3384             disable altivec
3385         ;;
3386         g4|745*|ppc745*|powerpc745*)
3387             cpuflags="-mcpu=7450"
3388         ;;
3389         74*|ppc74*|powerpc74*)
3390             cpuflags="-mcpu=7400"
3391         ;;
3392         g5|970|ppc970|powerpc970)
3393             cpuflags="-mcpu=970"
3394         ;;
3395         power[3-7]*)
3396             cpuflags="-mcpu=$cpu"
3397         ;;
3398         cell)
3399             cpuflags="-mcpu=cell"
3400             enable ldbrx
3401         ;;
3402         e500mc)
3403             cpuflags="-mcpu=e500mc"
3404             disable altivec
3405         ;;
3406         e500v2)
3407             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3408             disable altivec
3409         ;;
3410         e500)
3411             cpuflags="-mcpu=8540 -mhard-float"
3412             disable altivec
3413         ;;
3414     esac
3415
3416 elif enabled sparc; then
3417
3418     case $cpu in
3419         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3420             cpuflags="-mcpu=$cpu"
3421             disable vis
3422         ;;
3423         ultrasparc*|niagara[234])
3424             cpuflags="-mcpu=$cpu"
3425         ;;
3426     esac
3427
3428 elif enabled x86; then
3429
3430     case $cpu in
3431         i[345]86|pentium)
3432             cpuflags="-march=$cpu"
3433             disable mmx
3434         ;;
3435         # targets that do NOT support nopl and conditional mov (cmov)
3436         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3437             cpuflags="-march=$cpu"
3438             disable i686
3439         ;;
3440         # targets that do support nopl and conditional mov (cmov)
3441         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3442             cpuflags="-march=$cpu"
3443             enable i686
3444             enable fast_cmov
3445         ;;
3446         # targets that do support conditional mov but on which it's slow
3447         pentium4|pentium4m|prescott|nocona)
3448             cpuflags="-march=$cpu"
3449             enable i686
3450             disable fast_cmov
3451         ;;
3452     esac
3453
3454 fi
3455
3456 if [ "$cpu" != generic ]; then
3457     add_cflags  $cpuflags
3458     add_asflags $cpuflags
3459 fi
3460
3461 # compiler sanity check
3462 check_exec <<EOF
3463 int main(void){ return 0; }
3464 EOF
3465 if test "$?" != 0; then
3466     echo "$cc is unable to create an executable file."
3467     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3468         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3469         echo "Only do this if you know what cross compiling means."
3470     fi
3471     die "C compiler test failed."
3472 fi
3473
3474 add_cppflags -D_ISOC99_SOURCE
3475 add_cxxflags -D__STDC_CONSTANT_MACROS
3476 check_cflags -std=c99
3477 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3478 #include <stdlib.h>
3479 EOF
3480 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3481 #include <stdlib.h>
3482 EOF
3483
3484 check_host_cflags -std=c99
3485 check_host_cflags -Wall
3486
3487 check_64bit(){
3488     arch32=$1
3489     arch64=$2
3490     expr=$3
3491     check_code cc "" "int test[2*($expr) - 1]" &&
3492         subarch=$arch64 || subarch=$arch32
3493 }
3494
3495 case "$arch" in
3496     aarch64|alpha|ia64)
3497         spic=$shared
3498     ;;
3499     mips)
3500         check_64bit mips mips64 '_MIPS_SIM > 1'
3501         spic=$shared
3502     ;;
3503     parisc)
3504         check_64bit parisc parisc64 'sizeof(void *) > 4'
3505         spic=$shared
3506     ;;
3507     ppc)
3508         check_64bit ppc ppc64 'sizeof(void *) > 4'
3509         spic=$shared
3510     ;;
3511     sparc)
3512         check_64bit sparc sparc64 'sizeof(void *) > 4'
3513         spic=$shared
3514     ;;
3515     x86)
3516         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3517         if test "$subarch" = "x86_64"; then
3518             spic=$shared
3519         fi
3520     ;;
3521     ppc)
3522         check_cc <<EOF && subarch="ppc64"
3523         int test[(int)sizeof(char*) - 7];
3524 EOF
3525     ;;
3526 esac
3527
3528 enable $subarch
3529 enabled spic && enable_weak pic
3530
3531 # OS specific
3532 case $target_os in
3533     aix)
3534         SHFLAGS=-shared
3535         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3536         enabled shared && add_ldflags -Wl,-brtl
3537         ;;
3538     haiku)
3539         prefix_default="/boot/common"
3540         network_extralibs="-lnetwork"
3541         host_libs=
3542         ;;
3543     sunos)
3544         SHFLAGS='-shared -Wl,-h,$$(@F)'
3545         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3546         network_extralibs="-lsocket -lnsl"
3547         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3548         # When using suncc to build, the Solaris linker will mark
3549         # an executable with each instruction set encountered by
3550         # the Solaris assembler.  As our libraries contain their own
3551         # guards for processor-specific code, instead suppress
3552         # generation of the HWCAPS ELF section on Solaris x86 only.
3553         enabled_all suncc x86 &&
3554             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3555             add_ldflags -Wl,-M,mapfile
3556         nm_default='nm -P -g'
3557         ;;
3558     netbsd)
3559         disable symver
3560         oss_indev_extralibs="-lossaudio"
3561         oss_outdev_extralibs="-lossaudio"
3562         enabled gcc || check_ldflags -Wl,-zmuldefs
3563         ;;
3564     openbsd|bitrig)
3565         disable symver
3566         SHFLAGS='-shared'
3567         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3568         SLIB_INSTALL_LINKS=
3569         oss_indev_extralibs="-lossaudio"
3570         oss_outdev_extralibs="-lossaudio"
3571         ;;
3572     dragonfly)
3573         disable symver
3574         ;;
3575     freebsd)
3576         ;;
3577     bsd/os)
3578         add_extralibs -lpoll -lgnugetopt
3579         strip="strip -d"
3580         ;;
3581     darwin)
3582         gas="gas-preprocessor.pl $cc"
3583         enabled ppc && add_asflags -force_cpusubtype_ALL
3584         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3585         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3586         strip="${strip} -x"
3587         add_ldflags -Wl,-dynamic,-search_paths_first
3588         SLIBSUF=".dylib"
3589         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3590         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3591         objformat="macho"
3592         enabled x86_64 && objformat="macho64"
3593         enabled_any pic shared ||
3594             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3595         ;;
3596     mingw32*)
3597         if test $target_os = "mingw32ce"; then
3598             disable network
3599         else
3600             target_os=mingw32
3601         fi
3602         LIBTARGET=i386
3603         if enabled x86_64; then
3604             LIBTARGET="i386:x86-64"
3605         elif enabled arm; then
3606             LIBTARGET=arm-wince
3607         fi
3608         check_ldflags -Wl,--nxcompat
3609         check_ldflags -Wl,--dynamicbase
3610         shlibdir_default="$bindir_default"
3611         SLIBPREF=""
3612         SLIBSUF=".dll"
3613         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3614         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3615         dlltool="${cross_prefix}dlltool"
3616         if check_cmd lib.exe -list; then
3617             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3618             if enabled x86_64; then
3619                 LIBTARGET=x64
3620             fi
3621         elif check_cmd $dlltool --version; then
3622             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3623         fi
3624         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3625         SLIB_INSTALL_LINKS=
3626         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3627         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3628         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3629         objformat="win32"
3630         ranlib=:
3631         enable dos_paths
3632         ;;
3633     win32|win64)
3634         if enabled shared; then
3635             # Link to the import library instead of the normal static library
3636             # for shared libs.
3637             LD_LIB='%.lib'
3638             # Cannot build both shared and static libs with MSVC or icl.
3639             disable static
3640         fi
3641         shlibdir_default="$bindir_default"
3642         SLIBPREF=""
3643         SLIBSUF=".dll"
3644         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3645         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3646         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3647         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3648         SLIB_INSTALL_LINKS=
3649         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3650         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3651         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3652         objformat="win32"
3653         ranlib=:
3654         enable dos_paths
3655         ;;
3656     cygwin*)
3657         target_os=cygwin
3658         shlibdir_default="$bindir_default"
3659         SLIBPREF="cyg"
3660         SLIBSUF=".dll"
3661         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3662         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3663         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3664         SLIB_INSTALL_LINKS=
3665         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3666         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3667         objformat="win32"
3668         enable dos_paths
3669         ;;
3670     *-dos|freedos|opendos)
3671         network_extralibs="-lsocket"
3672         objformat="coff"
3673         enable dos_paths
3674         add_cppflags -U__STRICT_ANSI__
3675         ;;
3676     linux)
3677         enable dv1394
3678         ;;
3679     irix*)
3680         target_os=irix
3681         ranlib="echo ignoring ranlib"
3682         ;;
3683     os/2*)
3684         strip="lxlite -CS"
3685         ln_s="cp -f"
3686         objformat="aout"
3687         add_cppflags -D_GNU_SOURCE
3688         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3689         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3690         LIBSUF="_s.a"
3691         SLIBPREF=""
3692         SLIBSUF=".dll"
3693         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3694         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3695         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3696             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3697             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3698             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3699             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3700             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3701         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3702             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3703         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3704         enable dos_paths
3705         enable_weak os2threads
3706         ;;
3707     gnu/kfreebsd)
3708         add_cppflags -D_BSD_SOURCE
3709         ;;
3710     gnu)
3711         ;;
3712     qnx)
3713         add_cppflags -D_QNX_SOURCE
3714         network_extralibs="-lsocket"
3715         ;;
3716     symbian)
3717         SLIBSUF=".dll"
3718         enable dos_paths
3719         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3720         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3721         add_ldflags -Wl,--target1-abs,--no-undefined \
3722                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3723                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3724         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3725                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3726                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3727         ;;
3728     osf1)
3729         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3730         ;;
3731     minix)
3732         ;;
3733     plan9)
3734         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3735                      -D_REENTRANT_SOURCE        \
3736                      -D_RESEARCH_SOURCE         \
3737                      -DFD_SETSIZE=96            \
3738                      -DHAVE_SOCK_OPTS
3739         add_compat strtod.o strtod=avpriv_strtod
3740         network_extralibs='-lbsd'
3741         exeobjs=compat/plan9/main.o
3742         disable ffserver
3743         cp_f='cp'
3744         ;;
3745     none)
3746         ;;
3747     *)
3748         die "Unknown OS '$target_os'."
3749         ;;
3750 esac
3751
3752 # determine libc flavour
3753
3754 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3755 if check_cpp_condition features.h "defined __UCLIBC__"; then
3756     libc_type=uclibc
3757     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3758 elif check_cpp_condition features.h "defined __GLIBC__"; then
3759     libc_type=glibc
3760     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3761 # MinGW headers can be installed on Cygwin, so check for newlib first.
3762 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3763     libc_type=newlib
3764     add_cppflags -U__STRICT_ANSI__
3765 elif check_header _mingw.h; then
3766     libc_type=mingw
3767     check_cpp_condition _mingw.h \
3768         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3769             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3770         die "ERROR: MinGW runtime version must be >= 3.15."
3771     add_cppflags -U__STRICT_ANSI__
3772     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3773             __MINGW64_VERSION_MAJOR < 3"; then
3774         add_compat msvcrt/snprintf.o
3775         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3776     else
3777         add_cppflags -D__USE_MINGW_ANSI_STDIO=1
3778     fi
3779 elif check_func_headers stdlib.h _get_doserrno; then
3780     libc_type=msvcrt
3781     add_compat strtod.o strtod=avpriv_strtod
3782     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3783                                  _snprintf=avpriv_snprintf  \
3784                                  vsnprintf=avpriv_vsnprintf
3785     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3786     # 0x601 by default unless something else is set by the user.
3787     # This can easily lead to us detecting functions only present
3788     # in such new versions and producing binaries requiring windows 7.0.
3789     # Therefore explicitly set the default to XP unless the user has
3790     # set something else on the command line.
3791     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3792 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3793     libc_type=klibc
3794 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3795     libc_type=bionic
3796     add_compat strtod.o strtod=avpriv_strtod
3797 fi
3798
3799 test -n "$libc_type" && enable $libc_type
3800
3801 # hacks for compiler/libc/os combinations
3802
3803 if enabled_all tms470 glibc; then
3804     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3805     add_cppflags -D__USER_LABEL_PREFIX__=
3806     add_cppflags -D__builtin_memset=memset
3807     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3808     add_cflags   -pds=48    # incompatible redefinition of macro
3809 fi
3810
3811 if enabled_all ccc glibc; then
3812     add_ldflags -Wl,-z,now  # calls to libots crash without this
3813 fi
3814
3815 esc(){
3816     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3817 }
3818
3819 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3820
3821 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3822
3823 set_default $PATHS_LIST
3824 set_default nm
3825
3826 # we need to build at least one lib type
3827 if ! enabled_any static shared; then
3828     cat <<EOF
3829 At least one library type must be built.
3830 Specify --enable-static to build the static libraries or --enable-shared to
3831 build the shared libraries as well. To only build the shared libraries specify
3832 --disable-static in addition to --enable-shared.
3833 EOF
3834     exit 1;
3835 fi
3836
3837 # backward compatibility layer for incompatible_libav/fork_abi
3838 enabled incompatible_fork_abi  && enable incompatible_libav_abi
3839 enabled incompatible_libav_abi && enable incompatible_fork_abi
3840
3841 die_license_disabled() {
3842     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3843 }
3844
3845 die_license_disabled_gpl() {
3846     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3847 }
3848
3849 die_license_disabled gpl frei0r
3850 die_license_disabled gpl libcdio
3851 die_license_disabled gpl libutvideo
3852 die_license_disabled gpl libvidstab
3853 die_license_disabled gpl libx264
3854 die_license_disabled gpl libxavs
3855 die_license_disabled gpl libxvid
3856 die_license_disabled gpl libzvbi
3857 die_license_disabled gpl x11grab
3858
3859 die_license_disabled nonfree libaacplus
3860 die_license_disabled nonfree libfaac
3861 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3862 enabled gpl && die_license_disabled_gpl nonfree openssl
3863
3864 die_license_disabled version3 libopencore_amrnb
3865 die_license_disabled version3 libopencore_amrwb
3866 die_license_disabled version3 libvo_aacenc
3867 die_license_disabled version3 libvo_amrwbenc
3868
3869 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3870
3871 disabled optimizations || check_cflags -fomit-frame-pointer
3872
3873 enable_weak_pic() {
3874     disabled pic && return
3875     enable pic
3876     add_cppflags -DPIC
3877     case "$target_os" in
3878     mingw*|cygwin*)
3879         ;;
3880     *)
3881         add_cflags -fPIC
3882         ;;
3883     esac
3884     add_asflags  -fPIC
3885 }
3886
3887 enabled pic && enable_weak_pic
3888
3889 check_cc <<EOF || die "Symbol mangling check failed."
3890 int ff_extern;
3891 EOF
3892 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3893 extern_prefix=${sym%%ff_extern*}
3894
3895 check_cc <<EOF && enable_weak inline_asm
3896 void foo(void) { __asm__ volatile ("" ::); }
3897 EOF
3898
3899 _restrict=
3900 for restrict_keyword in restrict __restrict__ __restrict; do
3901     check_cc <<EOF && _restrict=$restrict_keyword && break
3902 void foo(char * $restrict_keyword p);
3903 EOF
3904 done
3905
3906 check_cc <<EOF && enable pragma_deprecated
3907 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3908 EOF
3909
3910 check_cc <<EOF && enable attribute_packed
3911 struct { int x; } __attribute__((packed)) x;
3912 EOF
3913
3914 check_cc <<EOF && enable attribute_may_alias
3915 union { int x; } __attribute__((may_alias)) x;
3916 EOF
3917
3918 check_cc <<EOF || die "endian test failed"
3919 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3920 EOF
3921 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3922
3923 check_inline_asm inline_asm_labels '"1:\n"'
3924
3925 if enabled alpha; then
3926
3927     check_cflags -mieee
3928
3929 elif enabled arm; then
3930
3931     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3932 float func(float a, float b){ return a+b; }
3933 EOF
3934
3935     enabled thumb && check_cflags -mthumb || check_cflags -marm
3936     nogas=die
3937
3938     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3939         enable vfp_args
3940     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3941         case "${cross_prefix:-$cc}" in
3942             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3943             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3944 __asm__ (".eabi_attribute 28, 1");
3945 int main(void) { return 0; }
3946 EOF
3947         esac
3948         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3949     fi
3950
3951     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3952     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3953     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3954     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3955     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3956     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3957
3958     [ $target_os = linux ] ||
3959         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3960             $ARCH_EXT_LIST_ARM
3961
3962     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3963     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3964
3965     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3966
3967 elif enabled mips; then
3968
3969     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3970     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3971      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3972     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3973      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3974     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3975      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3976     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3977      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3978
3979 elif enabled parisc; then
3980
3981     if enabled gcc; then
3982         case $($cc -dumpversion) in
3983             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3984         esac
3985     fi
3986
3987 elif enabled ppc; then
3988
3989     enable local_aligned_8 local_aligned_16
3990
3991     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3992     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3993     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3994     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3995
3996     # AltiVec flags: The FSF version of GCC differs from the Apple version
3997     if enabled altivec; then
3998         if ! enabled_any pic ppc64; then
3999             nogas=warn
4000         fi
4001         check_cflags -maltivec -mabi=altivec &&
4002         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4003         check_cflags -faltivec
4004
4005         # check if our compiler supports Motorola AltiVec C API
4006         check_cc <<EOF || disable altivec
4007 $inc_altivec_h
4008 int main(void) {
4009     vector signed int v1 = (vector signed int) { 0 };
4010     vector signed int v2 = (vector signed int) { 1 };
4011     v1 = vec_add(v1, v2);
4012     return 0;
4013 }
4014 EOF
4015
4016         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4017     fi
4018
4019 elif enabled sparc; then
4020
4021     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
4022
4023 elif enabled x86; then
4024
4025     check_builtin rdtsc    intrin.h   "__rdtsc()"
4026     check_builtin mm_empty mmintrin.h "_mm_empty()"
4027
4028     enable local_aligned_8 local_aligned_16
4029
4030     # check whether EBP is available on x86
4031     # As 'i' is stored on the stack, this program will crash
4032     # if the base pointer is used to access it because the
4033     # base pointer is cleared in the inline assembly code.
4034     check_exec_crash <<EOF && enable ebp_available
4035 volatile int i=0;
4036 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4037 return i;
4038 EOF
4039
4040     # check whether EBX is available on x86
4041     check_inline_asm ebx_available '""::"b"(0)' &&
4042         check_inline_asm ebx_available '"":::"%ebx"'
4043
4044     # check whether xmm clobbers are supported
4045     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4046
4047     # check whether binutils is new enough to compile SSSE3/MMXEXT
4048     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4049     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4050
4051     if ! disabled_any asm mmx yasm; then
4052         if check_cmd $yasmexe --version; then
4053             enabled x86_64 && yasm_extra="-m amd64"
4054             yasm_debug="-g dwarf2"
4055         elif check_cmd nasm -v; then
4056             yasmexe=nasm
4057             yasm_debug="-g -F dwarf"
4058             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4059         fi
4060
4061         YASMFLAGS="-f $objformat $yasm_extra"
4062         enabled pic               && append YASMFLAGS "-DPIC"
4063         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4064         case "$objformat" in
4065             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4066         esac
4067
4068         check_yasm "movbe ecx, [5]" && enable yasm ||
4069             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4070         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4071         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4072         check_yasm "CPU amdnop" && enable cpunop
4073     fi
4074
4075     case "$cpu" in
4076         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4077             disable fast_clz
4078         ;;
4079     esac
4080
4081 fi
4082
4083 if enabled asm; then
4084     as=${gas:=$as}
4085     check_as <<EOF && enable gnu_as || \
4086         $nogas "GNU assembler not found, install gas-preprocessor"
4087 .macro m n
4088 \n: .int 0
4089 .endm
4090 m x
4091 EOF
4092 fi
4093
4094 check_ldflags -Wl,--as-needed
4095
4096 if check_func dlopen; then
4097     ldl=
4098 elif check_func dlopen -ldl; then
4099     ldl=-ldl
4100 fi
4101
4102 if ! disabled network; then
4103     check_type "sys/types.h sys/socket.h" socklen_t
4104     check_type netdb.h "struct addrinfo"
4105     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4106     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4107     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4108     check_type netinet/in.h "struct sockaddr_in6"
4109     check_type poll.h "struct pollfd"
4110     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4111     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4112     check_type netinet/sctp.h "struct sctp_event_subscribe"
4113     check_func getaddrinfo $network_extralibs
4114     check_func getservbyport $network_extralibs
4115     # Prefer arpa/inet.h over winsock2
4116     if check_header arpa/inet.h ; then
4117         check_func closesocket
4118     elif check_header winsock2.h ; then
4119         check_func_headers winsock2.h closesocket -lws2 &&
4120             network_extralibs="-lws2" ||
4121         { check_func_headers winsock2.h closesocket -lws2_32 &&
4122             network_extralibs="-lws2_32"; }
4123         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4124         check_type ws2tcpip.h socklen_t
4125         check_type ws2tcpip.h "struct addrinfo"
4126         check_type ws2tcpip.h "struct group_source_req"
4127         check_type ws2tcpip.h "struct ip_mreq_source"
4128         check_type ws2tcpip.h "struct ipv6_mreq"
4129         check_type winsock2.h "struct pollfd"
4130         check_type ws2tcpip.h "struct sockaddr_in6"
4131         check_type ws2tcpip.h "struct sockaddr_storage"
4132         check_struct winsock2.h "struct sockaddr" sa_len
4133     else
4134         disable network
4135     fi
4136 fi
4137
4138 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4139 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4140
4141 check_func  access
4142 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4143 check_func  fcntl
4144 check_func  fork
4145 check_func_headers stdlib.h getenv
4146 check_func  gethrtime
4147 check_func  getopt
4148 check_func  getrusage
4149 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4150 check_func  gettimeofday
4151 check_func  inet_aton $network_extralibs
4152 check_func  isatty
4153 check_func  localtime_r
4154 check_func  ${malloc_prefix}memalign            && enable memalign
4155 check_func  mkstemp
4156 check_func  mmap
4157 check_func  mprotect
4158 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4159 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4160 check_func  setrlimit
4161 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4162 check_func  strerror_r
4163 check_func  sched_getaffinity
4164 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4165 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4166 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4167 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4168 check_builtin sarestart signal.h "SA_RESTART"
4169 check_func  sysconf
4170 check_func  sysctl
4171 check_func  usleep
4172 check_func_headers conio.h kbhit
4173 check_func_headers windows.h PeekNamedPipe
4174 check_func_headers io.h setmode
4175 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4176 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4177 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4178 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4179 check_func_headers windows.h GetProcessAffinityMask
4180 check_func_headers windows.h GetProcessTimes
4181 check_func_headers windows.h GetSystemTimeAsFileTime
4182 check_func_headers windows.h MapViewOfFile
4183 check_func_headers windows.h SetConsoleTextAttribute
4184 check_func_headers windows.h Sleep
4185 check_func_headers windows.h VirtualAlloc
4186 check_func_headers glob.h glob
4187 check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4188
4189 check_header cl/cl.h
4190 check_header direct.h
4191 check_header dlfcn.h
4192 check_header dxva.h
4193 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4194 check_header io.h
4195 check_header libcrystalhd/libcrystalhd_if.h
4196 check_header malloc.h
4197 check_header poll.h
4198 check_header sys/mman.h
4199 check_header sys/param.h
4200 check_header sys/resource.h
4201 check_header sys/select.h
4202 check_header sys/time.h
4203 check_header sys/un.h
4204 check_header termios.h
4205 check_header unistd.h
4206 check_header vdpau/vdpau.h
4207 check_header vdpau/vdpau_x11.h
4208 check_header VideoDecodeAcceleration/VDADecoder.h
4209 check_header windows.h
4210 check_header X11/extensions/XvMClib.h
4211 check_header asm/types.h
4212
4213 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4214 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4215
4216 if ! disabled w32threads && ! enabled pthreads; then
4217     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
4218 fi
4219
4220 # check for some common methods of building with pthread support
4221 # do this before the optional library checks as some of them require pthreads
4222 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4223     enable pthreads
4224     if check_func pthread_create; then
4225         :
4226     elif check_func pthread_create -pthread; then
4227         add_cflags -pthread
4228         add_extralibs -pthread
4229     elif check_func pthread_create -pthreads; then
4230         add_cflags -pthreads
4231         add_extralibs -pthreads
4232     elif check_func pthread_create -lpthreadGC2; then
4233         add_extralibs -lpthreadGC2
4234     elif ! check_lib pthread.h pthread_create -lpthread; then
4235         disable pthreads
4236     fi
4237 fi
4238
4239 for thread in $THREADS_LIST; do
4240     if enabled $thread; then
4241         test -n "$thread_type" &&
4242             die "ERROR: Only one thread type must be selected." ||
4243             thread_type="$thread"
4244     fi
4245 done
4246
4247 if enabled pthreads; then
4248   check_func pthread_cancel
4249 fi
4250
4251 enabled sync_val_compare_and_swap && enable atomics_gcc
4252 enabled_all atomic_cas_ptr machine_rw_barrier && enable atomics_suncc
4253 enabled MemoryBarrier && enable atomics_win32
4254
4255 check_lib math.h sin -lm && LIBM="-lm"
4256 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4257
4258 atan2f_args=2
4259 ldexpf_args=2
4260 powf_args=2
4261
4262 for func in $MATH_FUNCS; do
4263     eval check_mathfunc $func \${${func}_args:-1}
4264 done
4265
4266 # these are off by default, so fail if requested and not available
4267 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4268                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4269                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4270 enabled fontconfig        && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4271 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4272 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4273 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4274 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4275 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4276 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4277 enabled libbluray         && require_pkg_config libbluray libbluray/bluray.h bd_open
4278 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4279                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4280                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4281 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4282 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4283 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4284 flite_libs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
4285 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4286 enabled libfreetype       && require_libfreetype
4287 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4288 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4289                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4290                                done || die "ERROR: libgsm not found"; }
4291 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4292 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4293 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4294 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4295 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4296 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4297 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4298 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg ||
4299                                check_lib openjpeg.h opj_version -lopenjpeg ||
4300                                die "ERROR: libopenjpeg not found"; }
4301 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4302 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4303 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4304 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4305 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4306 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4307 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4308 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4309 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4310 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4311     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4312     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4313 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4314 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4315                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4316                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4317 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4318 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4319 enabled libvidstab        && require_pkg_config vidstab vid.stab/libvidstab.h vsMotionDetectInit
4320 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4321 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4322 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4323 enabled libvpx            && {
4324     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4325                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4326     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
4327                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4328     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4329     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4330 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4331 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4332                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4333                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4334 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4335 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4336 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4337 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4338 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4339                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4340                                die "ERROR: openal not found"; } &&
4341                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4342                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4343 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4344                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4345                                die "ERROR: opencl not found"; } &&
4346                              { ! enabled_any w32threads os2threads ||
4347                                die "opencl currently needs --enable-pthreads or --disable-w32threads"; } &&
4348                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4349                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4350                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4351 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4352                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4353                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4354                                die "ERROR: openssl not found"; }
4355
4356 if enabled gnutls; then
4357     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4358     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4359 fi
4360
4361 # libdc1394 check
4362 if enabled libdc1394; then
4363     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4364         enable libdc1394_2; } ||
4365     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4366         enable libdc1394_1; } ||
4367     die "ERROR: No version of libdc1394 found "
4368 fi
4369
4370 SDL_CONFIG="${cross_prefix}sdl-config"
4371 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4372     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4373     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4374     enable sdl
4375 else
4376   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4377     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4378     sdl_libs=$("${SDL_CONFIG}" --libs)
4379     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4380     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4381     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4382     enable sdl
4383   fi
4384 fi
4385 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4386
4387 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4388 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4389 perl --version > /dev/null 2>&1 && enable perl || disable perl
4390 pod2man --help > /dev/null 2>&1 && enable pod2man || disable pod2man
4391 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4392
4393 check_header linux/fb.h
4394 check_header linux/videodev.h
4395 check_header linux/videodev2.h
4396 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4397
4398 check_header sys/videoio.h
4399
4400 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4401 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4402 # w32api 3.12 had it defined wrong
4403 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4404
4405 check_type "dshow.h" IBaseFilter
4406
4407 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4408 { check_header dev/bktr/ioctl_meteor.h &&
4409   check_header dev/bktr/ioctl_bt848.h; } ||
4410 { check_header machine/ioctl_meteor.h &&
4411   check_header machine/ioctl_bt848.h; } ||
4412 { check_header dev/video/meteor/ioctl_meteor.h &&
4413   check_header dev/video/bktr/ioctl_bt848.h; } ||
4414 check_header dev/ic/bt8xx.h
4415
4416 check_header sndio.h
4417 if check_struct sys/soundcard.h audio_buf_info bytes; then
4418     enable_safe sys/soundcard.h
4419 else
4420     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4421     #include <sys/soundcard.h>
4422     audio_buf_info abc;
4423 EOF
4424 fi
4425 check_header soundcard.h
4426
4427 enabled_any alsa_indev alsa_outdev &&
4428     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4429
4430 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4431     check_func jack_port_get_latency_range -ljack
4432
4433 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4434
4435 if enabled libcdio; then
4436     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4437     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4438     die "ERROR: libcdio-paranoia not found"
4439 fi
4440
4441 enabled x11grab                                           &&
4442 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
4443 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4444 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4445
4446 enabled vaapi &&
4447     check_lib va/va.h vaInitialize -lva ||
4448     disable vaapi
4449
4450 enabled vdpau &&
4451     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4452     disable vdpau
4453
4454 # Funny iconv installations are not unusual, so check it after all flags have been set
4455 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4456
4457 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4458
4459 # add some useful compiler flags if supported
4460 check_cflags -Wdeclaration-after-statement
4461 check_cflags -Wall
4462 check_cflags -Wno-parentheses
4463 check_cflags -Wno-switch
4464 check_cflags -Wno-format-zero-length
4465 check_cflags -Wdisabled-optimization
4466 check_cflags -Wpointer-arith
4467 check_cflags -Wredundant-decls
4468 check_cflags -Wno-pointer-sign
4469 check_cflags -Wwrite-strings
4470 check_cflags -Wtype-limits
4471 check_cflags -Wundef
4472 check_cflags -Wmissing-prototypes
4473 check_cflags -Wno-pointer-to-int-cast
4474 check_cflags -Wstrict-prototypes
4475 enabled extra_warnings && check_cflags -Winline
4476
4477 # add some linker flags
4478 check_ldflags -Wl,--warn-common
4479 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4480 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4481
4482 # add some strip flags
4483 # -wN '..@*' is more selective than -x, but not available everywhere.
4484 check_stripflags -wN \'..@*\' || check_stripflags -x
4485
4486 enabled xmm_clobber_test &&
4487     check_ldflags -Wl,--wrap,avcodec_open2              \
4488                   -Wl,--wrap,avcodec_decode_audio4      \
4489                   -Wl,--wrap,avcodec_decode_video2      \
4490                   -Wl,--wrap,avcodec_decode_subtitle2   \
4491                   -Wl,--wrap,avcodec_encode_audio2      \
4492                   -Wl,--wrap,avcodec_encode_video       \
4493                   -Wl,--wrap,avcodec_encode_video2      \
4494                   -Wl,--wrap,avcodec_encode_subtitle    \
4495                   -Wl,--wrap,sws_scale ||
4496     disable xmm_clobber_test
4497
4498 echo "X{};" > $TMPV
4499 if test_ldflags -Wl,--version-script,$TMPV; then
4500     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4501     check_cc <<EOF && enable symver_asm_label
4502 void ff_foo(void) __asm__ ("av_foo@VERSION");
4503 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4504 EOF
4505     check_cc <<EOF && enable symver_gnu_asm
4506 __asm__(".symver ff_foo,av_foo@VERSION");
4507 void ff_foo(void) {}
4508 EOF
4509 fi
4510
4511 if [ -z "$optflags" ]; then
4512     if enabled small; then
4513         optflags=$cflags_size
4514     elif enabled optimizations; then
4515         optflags=$cflags_speed
4516     else
4517         optflags=$cflags_noopt
4518     fi
4519 fi
4520
4521 check_optflags(){
4522     check_cflags "$@"
4523     enabled lto && check_ldflags "$@"
4524 }
4525
4526
4527 if enabled lto; then
4528     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4529     check_cflags  -flto
4530     check_ldflags -flto $cpuflags
4531 fi
4532
4533 check_optflags $optflags
4534 check_optflags -fno-math-errno
4535 check_optflags -fno-signed-zeros
4536
4537 enabled ftrapv && check_cflags -ftrapv
4538
4539 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4540 int x;
4541 EOF
4542
4543
4544 if enabled icc; then
4545     # Just warnings, no remarks
4546     check_cflags -w1
4547     # -wd: Disable following warnings
4548     # 144, 167, 556: -Wno-pointer-sign
4549     # 188: enumerated type mixed with another type
4550     # 1292: attribute "foo" ignored
4551     # 1419: external declaration in primary source file
4552     # 10006: ignoring unknown option -fno-signed-zeros
4553     # 10148: ignoring unknown option -Wno-parentheses
4554     # 10156: ignoring option '-W'; no argument required
4555     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
4556     # 11030: Warning unknown option --as-needed
4557     # 10156: ignoring option '-export'; no argument required
4558     check_ldflags -wd10156,11030
4559     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4560     enable ebp_available
4561     if enabled x86_32; then
4562         icc_version=$($cc -dumpversion)
4563         test ${icc_version%%.*} -ge 11 &&
4564             check_cflags -falign-stack=maintain-16-byte ||
4565             disable aligned_stack
4566     fi
4567 elif enabled ccc; then
4568     # disable some annoying warnings
4569     add_cflags -msg_disable bitnotint
4570     add_cflags -msg_disable mixfuncvoid
4571     add_cflags -msg_disable nonstandcast
4572     add_cflags -msg_disable unsupieee
4573 elif enabled gcc; then
4574     check_optflags -fno-tree-vectorize
4575     check_cflags -Werror=implicit-function-declaration
4576     check_cflags -Werror=missing-prototypes
4577     check_cflags -Werror=return-type
4578     check_cflags -Werror=vla
4579 elif enabled llvm_gcc; then
4580     check_cflags -mllvm -stack-alignment=16
4581 elif enabled clang; then
4582     check_cflags -mllvm -stack-alignment=16
4583     check_cflags -Qunused-arguments
4584     check_cflags -Werror=implicit-function-declaration
4585     check_cflags -Werror=missing-prototypes
4586     check_cflags -Werror=return-type
4587 elif enabled cparser; then
4588     add_cflags -Wno-missing-variable-declarations
4589     add_cflags -Wno-empty-statement
4590 elif enabled armcc; then
4591     # 2523: use of inline assembler is deprecated
4592     add_cflags -W${armcc_opt},--diag_suppress=2523
4593     add_cflags -W${armcc_opt},--diag_suppress=1207
4594     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4595     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4596     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4597     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4598 elif enabled tms470; then
4599     add_cflags -pds=824 -pds=837
4600 elif enabled pathscale; then
4601     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4602 elif enabled_any msvc icl; then
4603     enabled x86_32 && disable aligned_stack
4604     enabled_all x86_32 debug && add_cflags -Oy-
4605     enabled debug && add_ldflags -debug
4606     enable pragma_deprecated
4607     if enabled icl; then
4608         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4609         # (correctly) on icl 13.x.
4610         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4611             add_cflags -Qansi-alias
4612         # icl will pass the inline asm tests but inline asm is currently
4613         # not supported (build will fail)
4614         disabled inline_asm || warn "inline asm disabled due to issues with it in ICL"
4615         disable inline_asm
4616     fi
4617 fi
4618
4619 case $target_os in
4620     osf1)
4621         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4622     ;;
4623     plan9)
4624         add_cppflags -Dmain=plan9_main
4625     ;;
4626 esac
4627
4628 enable frame_thread_encoder
4629 enabled_any $THREADS_LIST      && enable threads
4630 enabled_any $ATOMICS_LIST      && enable atomics_native
4631
4632 enabled threads && ! enabled pthreads && ! enabled atomics_native && die "non pthread threading without atomics not supported, try adding --enable-pthreads or --cpu=i486 or higher if you are on x86"
4633
4634 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4635
4636 check_deps $CONFIG_LIST       \
4637            $CONFIG_EXTRA      \
4638            $HAVE_LIST         \
4639            $ALL_COMPONENTS    \
4640
4641
4642 if test $target_os = "haiku"; then
4643     disable memalign
4644     disable posix_memalign
4645 fi
4646
4647 ! enabled_any memalign posix_memalign aligned_malloc &&
4648     enabled_any $need_memalign && enable memalign_hack
4649
4650 # add_dep lib dep
4651 # -> enable ${lib}_deps_${dep}
4652 # -> add $dep to ${lib}_deps only once
4653 add_dep() {
4654     lib=$1
4655     dep=$2
4656     enabled "${lib}_deps_${dep}" && return 0
4657     enable  "${lib}_deps_${dep}"
4658     prepend "${lib}_deps" $dep
4659 }
4660
4661 # merge deps lib components
4662 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
4663 merge_deps() {
4664     lib=$1
4665     shift
4666     for comp in $*; do
4667         enabled $comp || continue
4668         eval "dep=\"\$${comp}_deps\""
4669         for d in $dep; do
4670             add_dep $lib $d
4671         done
4672     done
4673 }
4674
4675 merge_deps libavfilter $FILTER_LIST
4676
4677 echo "install prefix            $prefix"
4678 echo "source path               $source_path"
4679 echo "C compiler                $cc"
4680 echo "ARCH                      $arch ($cpu)"
4681 if test "$build_suffix" != ""; then
4682     echo "build suffix              $build_suffix"
4683 fi
4684 if test "$progs_suffix" != ""; then
4685     echo "progs suffix              $progs_suffix"
4686 fi
4687 if test "$extra_version" != ""; then
4688     echo "version string suffix     $extra_version"
4689 fi
4690 echo "big-endian                ${bigendian-no}"
4691 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4692 if enabled x86; then
4693     echo "${yasmexe}                      ${yasm-no}"
4694     echo "MMX enabled               ${mmx-no}"
4695     echo "MMXEXT enabled            ${mmxext-no}"
4696     echo "3DNow! enabled            ${amd3dnow-no}"
4697     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4698     echo "SSE enabled               ${sse-no}"
4699     echo "SSSE3 enabled             ${ssse3-no}"
4700     echo "AVX enabled               ${avx-no}"
4701     echo "FMA4 enabled              ${fma4-no}"
4702     echo "i686 features enabled     ${i686-no}"
4703     echo "CMOV is fast              ${fast_cmov-no}"
4704     echo "EBX available             ${ebx_available-no}"
4705     echo "EBP available             ${ebp_available-no}"
4706 fi
4707 if enabled arm; then
4708     echo "ARMv5TE enabled           ${armv5te-no}"
4709     echo "ARMv6 enabled             ${armv6-no}"
4710     echo "ARMv6T2 enabled           ${armv6t2-no}"
4711     echo "VFP enabled               ${vfp-no}"
4712     echo "NEON enabled              ${neon-no}"
4713     echo "THUMB enabled             ${thumb-no}"
4714 fi
4715 if enabled mips; then
4716     echo "MIPS FPU enabled          ${mipsfpu-no}"
4717     echo "MIPS32R2 enabled          ${mips32r2-no}"
4718     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
4719     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
4720 fi
4721 if enabled ppc; then
4722     echo "AltiVec enabled           ${altivec-no}"
4723     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4724     echo "dcbzl available           ${dcbzl-no}"
4725 fi
4726 if enabled sparc; then
4727     echo "VIS enabled               ${vis-no}"
4728 fi
4729 echo "debug symbols             ${debug-no}"
4730 echo "strip symbols             ${stripping-no}"
4731 echo "optimize for size         ${small-no}"
4732 echo "optimizations             ${optimizations-no}"
4733 echo "static                    ${static-no}"
4734 echo "shared                    ${shared-no}"
4735 echo "postprocessing support    ${postproc-no}"
4736 echo "new filter support        ${avfilter-no}"
4737 echo "network support           ${network-no}"
4738 echo "threading support         ${thread_type-no}"
4739 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4740 echo "SDL support               ${sdl-no}"
4741 echo "opencl enabled            ${opencl-no}"
4742 echo "libzvbi enabled           ${libzvbi-no}"
4743 echo "texi2html enabled         ${texi2html-no}"
4744 echo "perl enabled              ${perl-no}"
4745 echo "pod2man enabled           ${pod2man-no}"
4746 echo "makeinfo enabled          ${makeinfo-no}"
4747 test -n "$random_seed" &&
4748     echo "random seed               ${random_seed}"
4749 echo
4750
4751 echo "External libraries:"
4752 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4753 echo
4754
4755 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4756     echo "Enabled ${type}s:"
4757     eval list=\$$(toupper $type)_LIST
4758     print_enabled '_*' $list | print_3_columns
4759     echo
4760 done
4761
4762 license="LGPL version 2.1 or later"
4763 if enabled nonfree; then
4764     license="nonfree and unredistributable"
4765 elif enabled gplv3; then
4766     license="GPL version 3 or later"
4767 elif enabled lgplv3; then
4768     license="LGPL version 3 or later"
4769 elif enabled gpl; then
4770     license="GPL version 2 or later"
4771 fi
4772
4773 echo "License: $license"
4774
4775 echo "Creating config.mak, config.h, and doc/config.texi..."
4776
4777 test -e Makefile || $ln_s "$source_path/Makefile" .
4778
4779 enabled stripping || strip="echo skipping strip"
4780
4781 config_files="$TMPH config.mak doc/config.texi"
4782
4783 cat > config.mak <<EOF
4784 # Automatically generated by configure - do not modify!
4785 ifndef FFMPEG_CONFIG_MAK
4786 FFMPEG_CONFIG_MAK=1
4787 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
4788 prefix=$prefix
4789 LIBDIR=\$(DESTDIR)$libdir
4790 SHLIBDIR=\$(DESTDIR)$shlibdir
4791 INCDIR=\$(DESTDIR)$incdir
4792 BINDIR=\$(DESTDIR)$bindir
4793 DATADIR=\$(DESTDIR)$datadir
4794 DOCDIR=\$(DESTDIR)$docdir
4795 MANDIR=\$(DESTDIR)$mandir
4796 SRC_PATH=$source_path
4797 ifndef MAIN_MAKEFILE
4798 SRC_PATH:=\$(SRC_PATH:.%=..%)
4799 endif
4800 CC_IDENT=$cc_ident
4801 ARCH=$arch
4802 CC=$cc
4803 CXX=$cxx
4804 AS=$as
4805 LD=$ld
4806 DEPCC=$dep_cc
4807 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4808 DEPAS=$as
4809 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4810 YASM=$yasmexe
4811 DEPYASM=$yasmexe
4812 AR=$ar
4813 ARFLAGS=$arflags
4814 AR_O=$ar_o
4815 RANLIB=$ranlib
4816 STRIP=$strip
4817 CP=cp -p
4818 LN_S=$ln_s
4819 CPPFLAGS=$CPPFLAGS
4820 CFLAGS=$CFLAGS
4821 CXXFLAGS=$CXXFLAGS
4822 ASFLAGS=$ASFLAGS
4823 AS_C=$AS_C
4824 AS_O=$AS_O
4825 CC_C=$CC_C
4826 CC_E=$CC_E
4827 CC_O=$CC_O
4828 CXX_C=$CXX_C
4829 CXX_O=$CXX_O
4830 LD_O=$LD_O
4831 LD_LIB=$LD_LIB
4832 LD_PATH=$LD_PATH
4833 DLLTOOL=$dlltool
4834 LDFLAGS=$LDFLAGS
4835 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4836 ASMSTRIPFLAGS=$ASMSTRIPFLAGS
4837 YASMFLAGS=$YASMFLAGS
4838 BUILDSUF=$build_suffix
4839 PROGSSUF=$progs_suffix
4840 FULLNAME=$FULLNAME
4841 LIBPREF=$LIBPREF
4842 LIBSUF=$LIBSUF
4843 LIBNAME=$LIBNAME
4844 SLIBPREF=$SLIBPREF
4845 SLIBSUF=$SLIBSUF
4846 EXESUF=$EXESUF
4847 EXTRA_VERSION=$extra_version
4848 CCDEP=$CCDEP
4849 CXXDEP=$CXXDEP
4850 CCDEP_FLAGS=$CCDEP_FLAGS
4851 ASDEP=$ASDEP
4852 ASDEP_FLAGS=$ASDEP_FLAGS
4853 CC_DEPFLAGS=$CC_DEPFLAGS
4854 AS_DEPFLAGS=$AS_DEPFLAGS
4855 HOSTCC=$host_cc
4856 HOSTLD=$host_ld
4857 HOSTCFLAGS=$host_cflags
4858 HOSTCPPFLAGS=$host_cppflags
4859 HOSTEXESUF=$HOSTEXESUF
4860 HOSTLDFLAGS=$host_ldflags
4861 HOSTLIBS=$host_libs
4862 DEPHOSTCC=$host_cc
4863 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4864 HOSTCCDEP=$HOSTCCDEP
4865 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4866 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4867 HOSTCC_C=$HOSTCC_C
4868 HOSTCC_O=$HOSTCC_O
4869 HOSTLD_O=$HOSTLD_O
4870 TARGET_EXEC=$target_exec $target_exec_args
4871 TARGET_PATH=$target_path
4872 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4873 LIBS-ffplay=$sdl_libs
4874 CFLAGS-ffplay=$sdl_cflags
4875 ZLIB=$($ldflags_filter -lz)
4876 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4877 EXTRALIBS=$extralibs
4878 COMPAT_OBJS=$compat_objs
4879 EXEOBJS=$exeobjs
4880 INSTALL=$install
4881 LIBTARGET=${LIBTARGET}
4882 SLIBNAME=${SLIBNAME}
4883 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4884 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4885 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4886 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4887 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4888 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4889 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4890 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4891 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
4892 NOREDZONE_FLAGS=$noredzone_flags
4893 EOF
4894
4895 get_version(){
4896     lcname=lib${1}
4897     name=$(toupper $lcname)
4898     file=$source_path/$lcname/version.h
4899     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4900     enabled raise_major && eval ${name}_VERSION_MAJOR=$((${name}_VERSION_MAJOR+100))
4901     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4902     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4903     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4904     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4905 }
4906
4907 map 'get_version $v' $LIBRARY_LIST
4908
4909 cat > $TMPH <<EOF
4910 /* Automatically generated by configure - do not modify! */
4911 #ifndef FFMPEG_CONFIG_H
4912 #define FFMPEG_CONFIG_H
4913 #define FFMPEG_CONFIGURATION "$(c_escape $FFMPEG_CONFIGURATION)"
4914 #define FFMPEG_LICENSE "$(c_escape $license)"
4915 #define FFMPEG_DATADIR "$(eval c_escape $datadir)"
4916 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4917 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4918 #define av_restrict $_restrict
4919 #define EXTERN_PREFIX "${extern_prefix}"
4920 #define EXTERN_ASM ${extern_prefix}
4921 #define SLIBSUF "$SLIBSUF"
4922 #define HAVE_MMX2 HAVE_MMXEXT
4923 EOF
4924
4925 test -n "$assert_level" &&
4926     echo "#define ASSERT_LEVEL $assert_level" >>$TMPH
4927
4928 test -n "$malloc_prefix" &&
4929     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4930
4931 if enabled yasm; then
4932     append config_files $TMPASM
4933     printf '' >$TMPASM
4934 fi
4935
4936 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4937
4938
4939 mkdir -p doc
4940 echo "@c auto-generated by configure" > doc/config.texi
4941
4942 print_config ARCH_   "$config_files" $ARCH_LIST
4943 print_config HAVE_   "$config_files" $HAVE_LIST
4944 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4945                                      $CONFIG_EXTRA      \
4946                                      $ALL_COMPONENTS    \
4947
4948 echo "#endif /* FFMPEG_CONFIG_H */" >> $TMPH
4949 echo "endif # FFMPEG_CONFIG_MAK" >> config.mak
4950
4951 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4952 cp_if_changed $TMPH config.h
4953 touch .config
4954
4955 enabled yasm && cp_if_changed $TMPASM config.asm
4956
4957 cat > $TMPH <<EOF
4958 /* Generated by ffconf */
4959 #ifndef AVUTIL_AVCONFIG_H
4960 #define AVUTIL_AVCONFIG_H
4961 EOF
4962
4963 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4964
4965 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4966
4967 cp_if_changed $TMPH libavutil/avconfig.h
4968
4969 if test -n "$WARNINGS"; then
4970     printf "\n$WARNINGS"
4971     enabled fatal_warnings && exit 1
4972 fi
4973
4974 # build pkg-config files
4975
4976 pkgconfig_generate(){
4977     name=$1
4978     shortname=${name#lib}${build_suffix}
4979     comment=$2
4980     version=$3
4981     libs=$4
4982     requires=$5
4983     enabled ${name#lib} || return 0
4984     mkdir -p $name
4985     cat <<EOF > $name/$name${build_suffix}.pc
4986 prefix=$prefix
4987 exec_prefix=\${prefix}
4988 libdir=$libdir
4989 includedir=$incdir
4990
4991 Name: $name
4992 Description: $comment
4993 Version: $version
4994 Requires: $(enabled shared || echo $requires)
4995 Requires.private: $(enabled shared && echo $requires)
4996 Conflicts:
4997 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4998 Libs.private: $(enabled shared && echo $libs)
4999 Cflags: -I\${includedir}
5000 EOF
5001
5002 mkdir -p doc/examples/pc-uninstalled
5003 includedir=${source_path}
5004 [ "$includedir" = . ] && includedir="\${pcfiledir}/../../.."
5005     cat <<EOF > doc/examples/pc-uninstalled/$name.pc
5006 prefix=
5007 exec_prefix=
5008 libdir=\${pcfiledir}/../../../$name
5009 includedir=${includedir}
5010
5011 Name: $name
5012 Description: $comment
5013 Version: $version
5014 Requires: $requires
5015 Conflicts:
5016 Libs: -L\${libdir} -Wl,-rpath,\${libdir} -l${shortname} $(enabled shared || echo $libs)
5017 Cflags: -I\${includedir}
5018 EOF
5019 }
5020
5021 lavfi_libs="libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5022 enabled libavfilter_deps_avcodec    && prepend lavfi_libs "libavcodec${build_suffix} = $LIBAVCODEC_VERSION,"
5023 enabled libavfilter_deps_avformat   && prepend lavfi_libs "libavformat${build_suffix} = $LIBAVFORMAT_VERSION,"
5024 enabled libavfilter_deps_avresample && prepend lavfi_libs "libavresample${build_suffix} = $LIBAVRESAMPLE_VERSION,"
5025 enabled libavfilter_deps_swscale    && prepend lavfi_libs "libswscale${build_suffix} = $LIBSWSCALE_VERSION,"
5026 enabled libavfilter_deps_swresample && prepend lavfi_libs "libswresample${build_suffix} = $LIBSWRESAMPLE_VERSION,"
5027 enabled libavfilter_deps_postproc   && prepend lavfi_libs "libpostproc${build_suffix} = $LIBPOSTPROC_VERSION,"
5028 lavfi_libs=${lavfi_libs%, }
5029
5030 lavd_libs="libavformat${build_suffix} = $LIBAVFORMAT_VERSION"
5031 enabled lavfi_indev && prepend lavd_libs "libavfilter${build_suffix} = $LIBAVFILTER_VERSION,"
5032
5033 pkgconfig_generate libavutil     "FFmpeg utility library"               "$LIBAVUTIL_VERSION"     "$LIBM"
5034 pkgconfig_generate libavcodec    "FFmpeg codec library"                 "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5035 pkgconfig_generate libavformat   "FFmpeg container format library"      "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec${build_suffix} = $LIBAVCODEC_VERSION"
5036 pkgconfig_generate libavdevice   "FFmpeg device handling library"       "$LIBAVDEVICE_VERSION"   "$extralibs" "$lavd_libs"
5037 pkgconfig_generate libavfilter   "FFmpeg audio/video filtering library" "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
5038 pkgconfig_generate libpostproc   "FFmpeg postprocessing library"        "$LIBPOSTPROC_VERSION"   ""           "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5039 pkgconfig_generate libavresample "Libav audio resampling library"       "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5040 pkgconfig_generate libswscale    "FFmpeg image rescaling library"       "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5041 pkgconfig_generate libswresample "FFmpeg audio resampling library"      "$LIBSWRESAMPLE_VERSION" "$LIBM"      "libavutil${build_suffix} = $LIBAVUTIL_VERSION"
5042
5043 fix_ffmpeg_remote(){
5044     git_remote_from=$1
5045     git_remote_to=$2
5046     fixme_remote=$(git --git-dir=$source_path/.git --work-tree=$source_path remote -v | grep $git_remote_from | cut -f 1 | sort | uniq)
5047     if [ "$fixme_remote" != "" ]; then
5048         echolog "
5049 Outdated domain in git config, the official domain for ffmpeg git is since
5050 November 2011, source.ffmpeg.org, both the old and the new point to the same
5051 repository and server. To update it enter the following commands:
5052 "
5053         for remote in $fixme_remote; do
5054             echolog "git remote set-url $remote $git_remote_to"
5055         done
5056     fi
5057 }
5058
5059 if test -f "$source_path/.git/config"; then
5060     remote_from=git.videolan.org
5061     remote_to=source.ffmpeg.org
5062     fix_ffmpeg_remote git@$remote_from:ffmpeg   git@$remote_to:ffmpeg
5063     fix_ffmpeg_remote git://$remote_from/ffmpeg git://$remote_to/ffmpeg
5064 fi