configure.in

   1 dnl Process this file with autoconf to produce a configure script.
   2 AC_INIT(elf2flt.c)
   3
   4 AC_ARG_WITH(zlib-prefix,
   5         [ --with-zlib-prefix=<dir>  path to installed zlib ],
   6         [ ac_zlib_prefix=$withval ],
   7         [ ac_zlib_prefix=NONE ]
   8 )
   9
  10 AC_ARG_WITH(libbfd,
  11         [ --with-libbfd=<file>  path to libbfd.a library to use ],
  12         [ ac_libbfd=$withval ],
  13         [ ac_libbfd=NONE ]
  14 )
  15
  16 AC_ARG_WITH(libiberty,
  17         [ --with-libiberty=<file>  path to libiberty.a library to use ],
  18         [ ac_libiberty=$withval ],
  19         [ ac_libiberty=NONE ]
  20 )
  21
  22 AC_ARG_WITH(bfd-include-dir,
  23         [ --with-bfd-include-dir=<dir>  include path for correct bfd.h ],
  24         [ ac_bfd_include_dir=$withval ],
  25         [ ac_bfd_include_dir=NONE ]
  26 )
  27
  28 AC_ARG_WITH(binutils-include-dir,
  29         [ --with-binutils-include-dir=<dir>  include path for binutils headers ],
  30         [ ac_binutils_include_dir=$withval ],
  31         [ ac_binutils_include_dir=NONE ]
  32 )
  33
  34 AC_ARG_WITH(binutils-ldscript-dir,
  35         [ --with-binutils-ldscript-dir=<dir>  path to install elf2flt.ld ],
  36         [ ac_binutils_ldscript_dir=$withval ],
  37         [ ac_binutils_ldscript_dir=NONE ]
  38 )
  39
  40 AC_ARG_WITH(binutils-build-dir,
  41         [ --with-binutils-build-dir=<dir>  path to compiled binutils tree ],
  42         [ ac_binutils_build_dir=$withval ],
  43         [ ac_binutils_build_dir=NONE ]
  44 )
  45
  46 AC_ARG_ENABLE(ld-elf2flt-binary,
  47         AS_HELP_STRING([--disable-ld-elf2flt-binary], [use ld-elf2flt shell script]),
  48         [ use_ld_elf2flt_binary=$enableval ],
  49         [ use_ld_elf2flt_binary=yes ]
  50 )
  51
  52 dnl convert a yes/no variable to 1/0 for C code
  53 var_yn_to_10() {
  54         if eval test \"\$$1\" = yes ; then
  55                 eval $1=1
  56         else
  57                 eval $1=0
  58         fi
  59 }
  60
  61 AC_ARG_ENABLE(got-check,
  62         [ --disable-got-check - disable check for GOT (needed on H8) ],
  63         [ got_check=$enableval ],
  64         [ got_check=yes ]
  65 )
  66 var_yn_to_10 got_check
  67
  68 AC_ARG_ENABLE(emit-relocs,
  69         [ --disable-emit-relocs - don't use the --emit-relocs (-q) linker option ],
  70         [ emit_relocs=$enableval ],
  71         [ emit_relocs=yes ]
  72 )
  73 var_yn_to_10 emit_relocs
  74
  75 AC_ARG_ENABLE(emit-ctor-dtor,
  76         AS_HELP_STRING([--enable-emit-ctor-dtor], [manually create ctor/dtor list]),
  77         [ emit_ctor_dtor=$enableval ],
  78         [ emit_ctor_dtor=no ]
  79 )
  80 var_yn_to_10 emit_ctor_dtor
  81
  82 AC_ARG_ENABLE(always-reloc-text,
  83         AS_HELP_STRING([--enable-always-reloc-text], [always process text relocs ignoring pic/got (needed on Blackfin)]),
  84         [ always_reloc_text=$enableval ],
  85         [
  86         case $target in
  87                 bfin*) always_reloc_text=yes;;
  88                 *)     always_reloc_text=no;;
  89         esac
  90         ]
  91 )
  92 var_yn_to_10 always_reloc_text
  93
  94 AC_CANONICAL_HOST
  95 AC_CANONICAL_TARGET
  96
  97 dnl Checks for programs.
  98 AC_PROG_CC
  99 AC_USE_SYSTEM_EXTENSIONS
 100 AC_PROG_INSTALL
 101
 102 if test "$ac_binutils_build_dir" != "NONE"; then
 103   test "$ac_libbfd"               = "NONE" && ac_libbfd="$ac_binutils_build_dir/bfd/libbfd.a"
 104   test "$ac_libiberty"            = "NONE" && ac_libiberty="$ac_binutils_build_dir/libiberty/libiberty.a"
 105   test "$ac_bfd_include_dir"      = "NONE" && ac_bfd_include_dir="$ac_binutils_build_dir/bfd"
 106   test "$ac_binutils_include_dir" = "NONE" && ac_binutils_include_dir="$ac_binutils_build_dir/include"
 107 fi
 108
 109 dnl Checks for libraries.
 110 if test "$ac_libiberty" = "NONE"; then
 111   AC_CHECK_LIB(iberty, objalloc_create)
 112   ac_libiberty=auto
 113 else
 114   LIBS="$ac_libiberty $LIBS"
 115 fi
 116 if test "$ac_libbfd" = "NONE"; then
 117   AC_CHECK_LIB(bfd, bfd_openr)
 118   ac_libbfd=auto
 119 else
 120   LIBS="$ac_libbfd $LIBS"
 121 fi
 122 if test "$ac_zlib_prefix" = "NONE"; then
 123   AC_CHECK_LIB(z, deflate)
 124 else
 125   LIBS="-L$ac_zlib_prefix/lib -lz $LIBS"
 126 fi
 127
 128 bfd_include_dir=
 129 if test "$ac_bfd_include_dir" != "NONE"; then
 130   bfd_include_dir="-I$ac_bfd_include_dir"
 131 fi
 132
 133 binutils_include_dir=
 134 if test "$ac_binutils_include_dir" != "NONE"; then
 135   binutils_include_dir="-I$ac_binutils_include_dir"
 136 fi
 137
 138 zlib_include_dir=
 139 if test "$ac_zlib_prefix" != "NONE"; then
 140   zlib_include_dir="-I$ac_zlib_prefix/include"
 141 fi
 142
 143 binutils_ldscript_dir=
 144 if test "$ac_binutils_ldscript_dir" = "NONE"; then
 145   ac_binutils_ldscript_dir="\${TOOLDIR}/../${target_alias}/lib"
 146 fi
 147 binutils_ldscript_dir="$ac_binutils_ldscript_dir"
 148
 149 if test "$ac_libbfd" = "NONE" -o "$ac_libiberty" = "NONE" ; then
 150         AC_MSG_ERROR([
 151
 152 You need to specify the location of the libfd.a and libiberty.a
 153 host libraries from the binutils package.
 154
 155 Run configure again specifying these options:
 156
 157   ./configure --target=<ARCH> --with-bfd-include-dir=<dir> --with-libbfd=<libbfd.a> --with-libiberty=<libiberty.a>
 158 ])
 159 fi
 160
 161 if test "$ac_bfd_include_dir" = "NONE" ; then
 162         AC_MSG_ERROR([
 163
 164 You need to specify the location of the bfd.h header from a
 165 configured/compiled version of the binutils package for your target.
 166 Without this your elf2flt may crash as it will try to use the
 167 systems bfd.h which may be from a different binutils package.
 168
 169 Run configure again specifying these options:
 170
 171   ./configure --target=<ARCH> --with-bfd-include-dir=<dir> --with-libbfd=<libbfd.a> --with-libiberty=<libiberty.a>
 172 ])
 173 fi
 174
 175 SYMBOL_PREFIX=
 176 case $target in
 177         h8300|bfin*)
 178                 SYMBOL_PREFIX=_
 179                 ;;
 180 esac
 181
 182 dnl Make sure we resolve system symbols before libiberty/libbfd ones.
 183 dnl Otherwise, things like getopt get screwed up because the system headers
 184 dnl redirect some functions to the system symbols, but other local symbols
 185 dnl come from libiberty/libbfd.
 186 dnl int getopt(int, char * const [], const char *) __asm("_" "getopt" "$UNIX2003");
 187 AC_CHECK_LIB(c, malloc, LIBS="-lc $LIBS")
 188
 189 dnl Checks for header files.
 190 AC_HEADER_STDC
 191 AC_CHECK_HEADERS(fcntl.h unistd.h bfd.h)
 192
 193 dnl Checks for typedefs, structures, and compiler characteristics.
 194 AC_C_CONST
 195
 196 dnl Checks for library functions.
 197 AC_FUNC_VPRINTF
 198
 199 AC_CHECK_FUNCS([ \
 200         dcgettext \
 201         getline \
 202         libintl_dgettext \
 203         strsignal \
 204 ])
 205
 206 test "$GCC" = yes && CFLAGS="-Wall $CFLAGS"
 207
 208 dnl Subsitute values
 209 AC_SUBST(target)
 210 AC_SUBST(target_alias)
 211 AC_SUBST(target_cpu)
 212 AC_SUBST(target_os)
 213 AC_SUBST(target_vendor)
 214 AC_SUBST(bfd_include_dir)
 215 AC_SUBST(binutils_include_dir)
 216 AC_SUBST(zlib_include_dir)
 217 AC_SUBST(binutils_ldscript_dir)
 218 AC_SUBST(use_ld_elf2flt_binary)
 219 AC_SUBST(got_check)
 220 AC_SUBST(emit_relocs)
 221 AC_SUBST(emit_ctor_dtor)
 222 AC_SUBST(always_reloc_text)
 223 AC_SUBST(SYMBOL_PREFIX)
 224
 225 AC_OUTPUT(ld-elf2flt.sh:ld-elf2flt.in Makefile elf2flt.ld)
 226