262 lines
6.9 KiB
Text
262 lines
6.9 KiB
Text
dnl Process this file with autoconf to produce a configure script.
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AC_PREREQ(2.59)
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AC_INIT(gold, 0.1)
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AC_CONFIG_SRCDIR(gold.cc)
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AC_CANONICAL_TARGET
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AM_INIT_AUTOMAKE
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AM_CONFIG_HEADER(config.h:config.in)
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AC_ARG_WITH(sysroot,
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[ --with-sysroot[=DIR] search for usr/lib et al within DIR],
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[sysroot=$withval], [sysroot=no])
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if test "$sysroot" = "yes"; then
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sysroot='${exec_prefix}/${target_alias}/sys-root'
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elif test "$sysroot" = "no"; then
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sysroot=
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fi
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sysroot_relocatable=0
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if test -n "$sysroot"; then
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case "sysroot" in
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"${prefix}" | "${prefix}/"* | \
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"${exec_prefix}" | "${exec_prefix}/"* | \
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'${prefix}' | '${prefix}/'*| \
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'${exec_prefix}' | '${exec_prefix}/'*)
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sysroot_relocatable=1
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;;
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esac
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fi
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AC_DEFINE_UNQUOTED(TARGET_SYSTEM_ROOT, "$sysroot",
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[System root for target files])
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AC_DEFINE_UNQUOTED(TARGET_SYSTEM_ROOT_RELOCATABLE, $sysroot_relocatable,
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[Whether the system root can be relocated])
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dnl For now threads are a configure time option.
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AC_ARG_ENABLE([threads],
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[ --enable-threads multi-threaded linking],
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[case "${enableval}" in
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yes | "") threads=yes ;;
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no) threads=no ;;
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*) threads=yes ;;
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esac],
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[threads=no])
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if test "$threads" = "yes"; then
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AC_DEFINE(ENABLE_THREADS, 1,
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[Define to do multi-threaded linking])
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fi
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AM_CONDITIONAL(THREADS, test "$threads" = "yes")
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AC_ARG_ENABLE([targets],
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[ --enable-targets alternative target configurations],
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[case "${enableval}" in
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yes | "")
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AC_MSG_ERROR([--enable-targets option must specify target names or 'all'])
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;;
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no)
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enable_targets=
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;;
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*)
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enable_targets=$enableval
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;;
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esac],
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[# For now, enable all targets by default
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enable_targets=all
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])
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# Canonicalize the enabled targets.
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if test -n "$enable_targets"; then
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for targ in `echo $enable_targets | sed -e 's/,/ /g'`; do
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result=`$ac_config_sub $targ 2>/dev/null`
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if test -n "$result"; then
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canon_targets="$canon_targets $result"
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else
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# Permit unrecognized target names, like "all".
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canon_targets="$canon_targets $targ"
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fi
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done
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fi
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# See which specific instantiations we need.
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targetobjs=
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all_targets=
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default_machine=
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default_size=
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default_big_endian=
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targ_32_little=
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targ_32_big=
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targ_64_little=
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targ_64_big=
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for targ in $target $canon_targets; do
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if test "$targ" = "all"; then
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targ_32_little=yes
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targ_32_big=yes
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targ_64_little=yes
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targ_64_big=yes
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all_targets=yes
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else
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. ${srcdir}/configure.tgt
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if test "$targ_obj" = "UNKNOWN"; then
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AC_MSG_ERROR("unsupported target $targ")
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else
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targetobjs="$targetobjs ${targ_obj}.\$(OBJEXT)"
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if test "$targ_size" = "32"; then
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if test "$targ_big_endian" = "false"; then
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targ_32_little=yes
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elif test "$targ_big_endian" = "true"; then
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targ_32_big=yes
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else
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AC_MSG_ERROR("bad configure.tgt endian $targ_big_endian")
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fi
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elif test "$targ_size" = "64"; then
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if test "$targ_big_endian" = "false"; then
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targ_64_little=yes
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elif test "$targ_big_endian" = "true"; then
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targ_64_big=yes
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else
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AC_MSG_ERROR("bad configure.tgt endian $targ_big_endian")
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fi
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else
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AC_MSG_ERROR("bad configure.tgt size $targ_size")
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fi
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if test "$target" = "$targ"; then
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default_machine=$targ_machine
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default_size=$targ_size
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default_big_endian=$targ_big_endian
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fi
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fi
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fi
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done
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if test -n "$targ_32_little"; then
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AC_DEFINE(HAVE_TARGET_32_LITTLE, 1,
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[Define to support 32-bit little-endian targets])
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fi
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if test -n "$targ_32_big"; then
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AC_DEFINE(HAVE_TARGET_32_BIG, 1,
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[Define to support 32-bit big-endian targets])
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fi
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if test -n "$targ_64_little"; then
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AC_DEFINE(HAVE_TARGET_64_LITTLE, 1,
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[Define to support 64-bit little-endian targets])
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fi
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if test -n "$targ_64_big"; then
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AC_DEFINE(HAVE_TARGET_64_BIG, 1,
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[Define to support 64-bit big-endian targets])
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fi
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if test -n "$all_targets"; then
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TARGETOBJS='$(ALL_TARGETOBJS)'
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else
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TARGETOBJS="$targetobjs"
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fi
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AC_SUBST(TARGETOBJS)
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AC_DEFINE_UNQUOTED(GOLD_DEFAULT_MACHINE, $default_machine,
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[Default machine code])
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AC_DEFINE_UNQUOTED(GOLD_DEFAULT_SIZE, $default_size,
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[Default size (32 or 64)])
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AC_DEFINE_UNQUOTED(GOLD_DEFAULT_BIG_ENDIAN, $default_big_endian,
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[Default big endian (true or false)])
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AC_PROG_CC
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AC_PROG_CXX
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AC_PROG_YACC
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AC_PROG_RANLIB
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AC_PROG_INSTALL
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AC_PROG_LN_S
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AC_GNU_SOURCE
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ZW_GNU_GETTEXT_SISTER_DIR
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AM_PO_SUBDIRS
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AC_C_BIGENDIAN
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AC_EXEEXT
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AM_CONDITIONAL(NATIVE_LINKER,
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test "x$target_alias" = "x" -o "x$host_alias" = "x$target_alias")
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AM_CONDITIONAL(GCC, test "$GCC" = yes)
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AM_CONDITIONAL(OBJDUMP_AND_CPPFILT,
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[objdump --help >/dev/null && c++filt --help >/dev/null])
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dnl Some architectures do not support taking pointers of functions
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dnl defined in shared libraries except in -fPIC mode. We need to
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dnl tell the unittest framework if we're compiling for one of those
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dnl targets, so it doesn't try to run the tests that do that.
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AM_CONDITIONAL(FN_PTRS_IN_SO_WITHOUT_PIC, [
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case $target_cpu in
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i?86) true;;
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x86_64) false;;
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*) true;;
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esac])
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dnl Test for __thread support.
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AC_CACHE_CHECK([for thread support], [gold_cv_c_thread],
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[AC_COMPILE_IFELSE([__thread int i = 1;],
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[gold_cv_c_thread=yes], [gold_cv_c_thread=no])])
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AM_CONDITIONAL(TLS, test "$gold_cv_c_thread" = "yes")
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dnl On GNU/Linux TLS in static programs only works when using glibc
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dnl 2.4 or later.
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AC_CACHE_CHECK([for glibc >= 2.4], [gold_cv_lib_glibc24],
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[AC_COMPILE_IFELSE([
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#include <features.h>
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#if !defined __GLIBC__
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error
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#elif __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 4)
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error
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#endif
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], [gold_cv_lib_glibc24=yes], [gold_cv_lib_glibc24=no])])
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AM_CONDITIONAL(STATIC_TLS, test "$gold_cv_lib_glibc24" = "yes")
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AM_BINUTILS_WARNINGS
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WARN_CXXFLAGS=`echo ${WARN_CFLAGS} | sed -e 's/-Wstrict-prototypes//' -e 's/-Wmissing-prototypes//'`
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AC_SUBST(WARN_CXXFLAGS)
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dnl Force support for large files by default. This may need to be
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dnl host dependent. If build == host, we can check getconf LFS_CFLAGS.
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LFS_CFLAGS="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
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AC_SUBST(LFS_CFLAGS)
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AC_REPLACE_FUNCS(pread)
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# Link in zlib if we can. This allows us to write compressed sections.
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AC_SEARCH_LIBS(zlibVersion, z, [AC_CHECK_HEADERS(zlib.h)])
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AC_LANG_PUSH(C++)
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AC_CHECK_HEADERS(tr1/unordered_set tr1/unordered_map)
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AC_CHECK_HEADERS(ext/hash_map ext/hash_set)
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AC_CHECK_FUNCS(mallinfo)
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dnl Test whether the compiler can specify a member templates to call.
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AC_CACHE_CHECK([template member calls], [gold_cv_c_membertemplates],
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[AC_COMPILE_IFELSE([
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class c { public: template<int i> void fn(); };
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template<int i> void foo(c cv) { cv.fn<i>(); }
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template void foo<1>(c cv);],
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[gold_cv_c_membertemplates=yes], [gold_cv_c_membertemplates=no])])
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if test "$gold_cv_c_membertemplates" = "yes"; then
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AC_DEFINE(HAVE_MEMBER_TEMPLATE_SPECIFICATIONS, [],
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[Whether the C++ compiler can call a template member with no arguments])
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fi
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AC_LANG_POP(C++)
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AM_MAINTAINER_MODE
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AC_OUTPUT(Makefile testsuite/Makefile po/Makefile.in:po/Make-in)
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