dnl Process this file with autoconf to produce a configure script.
AC_INIT(elf2flt.c)
+AC_ARG_WITH(zlib-prefix,
+ [ --with-zlib-prefix=<dir> path to installed zlib ],
+ [ ac_zlib_prefix=$withval ],
+ [ ac_zlib_prefix=NONE ]
+)
+
AC_ARG_WITH(libbfd,
[ --with-libbfd=<file> path to libbfd.a library to use ],
[ ac_libbfd=$withval ],
[ ac_binutils_ldscript_dir=NONE ]
)
+AC_ARG_WITH(binutils-build-dir,
+ [ --with-binutils-build-dir=<dir> path to compiled binutils tree ],
+ [ ac_binutils_build_dir=$withval ],
+ [ ac_binutils_build_dir=NONE ]
+)
+
+AC_ARG_ENABLE(ld-elf2flt-binary,
+ AS_HELP_STRING([--disable-ld-elf2flt-binary], [use ld-elf2flt shell script]),
+ [ use_ld_elf2flt_binary=$enableval ],
+ [ use_ld_elf2flt_binary=yes ]
+)
+
+dnl convert a yes/no variable to 1/0 for C code
+var_yn_to_10() {
+ if eval test \"\$$1\" = yes ; then
+ eval $1=1
+ else
+ eval $1=0
+ fi
+}
+
AC_ARG_ENABLE(got-check,
[ --disable-got-check - disable check for GOT (needed on H8) ],
[ got_check=$enableval ],
[ got_check=yes ]
)
+var_yn_to_10 got_check
-AC_ARG_ENABLE(emit_relocs,
+AC_ARG_ENABLE(emit-relocs,
[ --disable-emit-relocs - don't use the --emit-relocs (-q) linker option ],
[ emit_relocs=$enableval ],
[ emit_relocs=yes ]
)
+var_yn_to_10 emit_relocs
+
+AC_ARG_ENABLE(emit-ctor-dtor,
+ AS_HELP_STRING([--enable-emit-ctor-dtor], [manually create ctor/dtor list]),
+ [ emit_ctor_dtor=$enableval ],
+ [ emit_ctor_dtor=no ]
+)
+var_yn_to_10 emit_ctor_dtor
+
+AC_ARG_ENABLE(always-reloc-text,
+ AS_HELP_STRING([--enable-always-reloc-text], [always process text relocs ignoring pic/got (needed on Blackfin)]),
+ [ always_reloc_text=$enableval ],
+ [
+ case $target in
+ bfin*) always_reloc_text=yes;;
+ *) always_reloc_text=no;;
+ esac
+ ]
+)
+var_yn_to_10 always_reloc_text
AC_CANONICAL_HOST
AC_CANONICAL_TARGET
dnl Checks for programs.
AC_PROG_CC
+AC_USE_SYSTEM_EXTENSIONS
AC_PROG_INSTALL
+if test "$ac_binutils_build_dir" != "NONE"; then
+ test "$ac_libbfd" = "NONE" && ac_libbfd="$ac_binutils_build_dir/bfd/libbfd.a"
+ test "$ac_libiberty" = "NONE" && ac_libiberty="$ac_binutils_build_dir/libiberty/libiberty.a"
+ test "$ac_bfd_include_dir" = "NONE" && ac_bfd_include_dir="$ac_binutils_build_dir/bfd"
+ test "$ac_binutils_include_dir" = "NONE" && ac_binutils_include_dir="$ac_binutils_build_dir/include"
+fi
+
dnl Checks for libraries.
if test "$ac_libiberty" = "NONE"; then
AC_CHECK_LIB(iberty, objalloc_create)
else
LIBS="$ac_libbfd $LIBS"
fi
+if test "$ac_zlib_prefix" = "NONE"; then
+ AC_CHECK_LIB(z, deflate)
+else
+ LIBS="-L$ac_zlib_prefix/lib -lz $LIBS"
+fi
bfd_include_dir=
if test "$ac_bfd_include_dir" != "NONE"; then
binutils_include_dir="-I$ac_binutils_include_dir"
fi
+zlib_include_dir=
+if test "$ac_zlib_prefix" != "NONE"; then
+ zlib_include_dir="-I$ac_zlib_prefix/include"
+fi
+
binutils_ldscript_dir=
if test "$ac_binutils_ldscript_dir" = "NONE"; then
ac_binutils_ldscript_dir="\${TOOLDIR}/../${target_alias}/lib"
binutils_ldscript_dir="$ac_binutils_ldscript_dir"
if test "$ac_libbfd" = "NONE" -o "$ac_libiberty" = "NONE" ; then
- echo
- echo "You need to specify the location of the libfd.a and libiberty.a"
- echo "host libraries from the binutils package."
- echo
- echo "Run configure again specifying these options:"
- echo
- echo " ./configure --target=<ARCH> --with-bfd-include-dir=<dir> --with-libbfd=<libbfd.a> --with-libiberty=<libiberty.a>"
- echo
- exit 1
+ AC_MSG_ERROR([
+
+You need to specify the location of the libfd.a and libiberty.a
+host libraries from the binutils package.
+
+Run configure again specifying these options:
+
+ ./configure --target=<ARCH> --with-bfd-include-dir=<dir> --with-libbfd=<libbfd.a> --with-libiberty=<libiberty.a>
+])
fi
if test "$ac_bfd_include_dir" = "NONE" ; then
- echo
- echo "You need to specify the location of the bfd.h header from a"
- echo "configured/compiled version of the binutils package for your target."
- echo "Without this your elf2flt may crash as it will try to use the"
- echo "systems bfd.h which may be from a different binutils package."
- echo
- echo "Run configure again specifying these options:"
- echo
- echo " ./configure --target=<ARCH> --with-bfd-include-dir=<dir> --with-libbfd=<libbfd.a> --with-libiberty=<libiberty.a>"
- echo
- exit 1
+ AC_MSG_ERROR([
+
+You need to specify the location of the bfd.h header from a
+configured/compiled version of the binutils package for your target.
+Without this your elf2flt may crash as it will try to use the
+systems bfd.h which may be from a different binutils package.
+
+Run configure again specifying these options:
+
+ ./configure --target=<ARCH> --with-bfd-include-dir=<dir> --with-libbfd=<libbfd.a> --with-libiberty=<libiberty.a>
+])
fi
+SYMBOL_PREFIX=
+case $target in
+ h8300|bfin*)
+ SYMBOL_PREFIX=_
+ ;;
+esac
+
+dnl Make sure we resolve system symbols before libiberty/libbfd ones.
+dnl Otherwise, things like getopt get screwed up because the system headers
+dnl redirect some functions to the system symbols, but other local symbols
+dnl come from libiberty/libbfd.
+dnl int getopt(int, char * const [], const char *) __asm("_" "getopt" "$UNIX2003");
+AC_CHECK_LIB(c, malloc, LIBS="-lc $LIBS")
+
dnl Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS(fcntl.h unistd.h bfd.h)
dnl Checks for library functions.
AC_FUNC_VPRINTF
-AC_CHECK_FUNCS(dcgettext)
+AC_CHECK_FUNCS([ \
+ dcgettext \
+ getline \
+ libintl_dgettext \
+ strsignal \
+])
+
+test "$GCC" = yes && CFLAGS="-Wall $CFLAGS"
dnl Subsitute values
AC_SUBST(target)
AC_SUBST(target_vendor)
AC_SUBST(bfd_include_dir)
AC_SUBST(binutils_include_dir)
+AC_SUBST(zlib_include_dir)
AC_SUBST(binutils_ldscript_dir)
+AC_SUBST(use_ld_elf2flt_binary)
AC_SUBST(got_check)
AC_SUBST(emit_relocs)
+AC_SUBST(emit_ctor_dtor)
+AC_SUBST(always_reloc_text)
+AC_SUBST(SYMBOL_PREFIX)
-AC_OUTPUT(Makefile ld-elf2flt)
+AC_OUTPUT(ld-elf2flt.sh:ld-elf2flt.in Makefile elf2flt.ld)
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