mirror of
https://sourceware.org/git/binutils-gdb.git
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c77912127f
`both*'. New configure option --{en,dis}able-ld.
ld, gold/
* configure.ac: For --enable-gold, handle value `default' instead of
`both*'. Always install ld as ld.gold, install as ld if gold is
the default.
462 lines
14 KiB
Plaintext
462 lines
14 KiB
Plaintext
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([no-dist parallel-tests])
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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, $sysroot_relocatable,
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[Whether the system root can be relocated])
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dnl "install_as_default" is true if the linker to be installed as the
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dnl default linker, ld.
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dnl "installed_linker" is the installed gold linker name.
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default_ld=
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AC_ARG_ENABLE(ld,
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[[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
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[case "${enableval}" in
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default)
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default_ld=ld.bfd
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;;
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esac])
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AC_ARG_ENABLE(gold,
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[[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
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[case "${enableval}" in
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yes|default)
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if test x${default_ld} = x; then
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install_as_default=yes
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fi
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installed_linker=ld.gold
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;;
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no)
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;;
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*)
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AC_MSG_ERROR([invalid --enable-gold argument])
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;;
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esac],
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[install_as_default=no
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installed_linker=ld.gold])
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AC_SUBST(install_as_default)
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AC_SUBST(installed_linker)
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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 "$threads" = "yes")
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AC_ARG_ENABLE([plugins],
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[ --enable-plugins linker plugins],
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[case "${enableval}" in
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yes | "") plugins=yes ;;
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no) plugins=no ;;
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*) plugins=yes ;;
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esac],
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[plugins=no])
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if test "$plugins" = "yes"; then
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AC_DEFINE(ENABLE_PLUGINS, 1,
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[Define to enable linker plugins])
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fi
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AM_CONDITIONAL(PLUGINS, test "$plugins" = "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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default_osabi=ELFOSABI_NONE
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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_extra_obj" != ""; then
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targetobjs="$targetobjs ${targ_extra_obj}.\$(OBJEXT)"
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fi
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if test "$targ_size" = "32" -o "$targ_extra_size" = "32"; then
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if test "$targ_big_endian" = "true" \
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-o "$targ_extra_big_endian" = "true"; then
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targ_32_big=yes
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fi
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if test "$targ_big_endian" = "false" \
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-o "$targ_extra_big_endian" = "false"; then
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targ_32_little=yes
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fi
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fi
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if test "$targ_size" = "64" -o "$targ_extra_size" = "64"; then
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if test "$targ_big_endian" = "true" \
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-o "$targ_extra_big_endian" = "true"; then
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targ_64_big=yes
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fi
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if test "$targ_big_endian" = "false" \
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-o "$targ_extra_big_endian" = "false"; then
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targ_64_little=yes
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fi
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fi
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if test "$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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default_osabi=$targ_osabi
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AM_CONDITIONAL(DEFAULT_TARGET_ARM, test "$targ_obj" = "arm")
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AM_CONDITIONAL(DEFAULT_TARGET_I386, test "$targ_obj" = "i386")
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AM_CONDITIONAL(DEFAULT_TARGET_POWERPC, test "$targ_obj" = "powerpc")
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AM_CONDITIONAL(DEFAULT_TARGET_SPARC, test "$targ_obj" = "sparc")
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AM_CONDITIONAL(DEFAULT_TARGET_X86_64, test "$targ_obj" = "x86_64")
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fi
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fi
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fi
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done
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# Remove any duplicates.
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to=""
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for t in $targetobjs; do
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case " $to " in
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*" $t "*) ;;
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*) to="$to $t" ;;
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esac
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done
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targetobjs=$to
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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_DEFINE_UNQUOTED(GOLD_DEFAULT_OSABI, $default_osabi,
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[Default OSABI code])
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AC_PROG_CC
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AC_PROG_CXX
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AC_PROG_YACC
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AC_PROG_RANLIB
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AC_PROG_INSTALL
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AC_PROG_LN_S
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AC_GNU_SOURCE
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ZW_GNU_GETTEXT_SISTER_DIR
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AM_PO_SUBDIRS
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AC_C_BIGENDIAN
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AC_EXEEXT
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AM_CONDITIONAL(NATIVE_LINKER,
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test "x$target_alias" = "x" -o "x$host_alias" = "x$target_alias")
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AM_CONDITIONAL(GCC, test "$GCC" = yes)
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AM_CONDITIONAL(NATIVE_OR_CROSS_LINKER,
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test "x$target_alias" = "x" -o "x$host_alias" = "x$target_alias" -o "x$host_alias" = "x$build_alias")
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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 $target_cpu in
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i?86) true;;
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x86_64) false;;
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sparc64) false;;
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*) true;;
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esac])
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dnl Test for gcc 4.1 or later. Full support for -mcmodel=medium is
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dnl only available in gcc 4.1.
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AC_CACHE_CHECK([for gcc >= 4.1], [gold_cv_prog_gcc41],
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[AC_COMPILE_IFELSE([
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#if !defined __GNUC__
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error
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#elif __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 1)
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error
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#endif
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], [gold_cv_prog_gcc41=yes], [gold_cv_prog_gcc41=no])])
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dnl Whether we can test -mcmodel=medium.
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AM_CONDITIONAL(MCMODEL_MEDIUM,
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[test "$target_cpu" = "x86_64" -a "$gold_cv_prog_gcc41" = "yes"])
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dnl Test for __thread support.
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AC_CACHE_CHECK([for thread support], [gold_cv_c_thread],
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[AC_COMPILE_IFELSE([__thread int i = 1;],
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[gold_cv_c_thread=yes], [gold_cv_c_thread=no])])
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AM_CONDITIONAL(TLS, test "$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 "$gold_cv_lib_glibc24" = "yes")
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dnl Test for #pragma omp threadprivate
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AC_CACHE_CHECK([for omp support], [gold_cv_c_threadprivate],
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[save_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -fopenmp"
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AC_COMPILE_IFELSE([
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#include <omp.h>
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int i;
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#pragma omp threadprivate (i)
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], [gold_cv_c_threadprivate=yes], [gold_cv_c_threadprivate=no])
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CFLAGS="$save_CFLAGS"])
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if test "$gold_cv_c_threadprivate" = "yes"; then
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AC_DEFINE(HAVE_OMP_SUPPORT, 1,
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[Define if compiler supports #pragma omp threadprivate])
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fi
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AM_CONDITIONAL(OMP_SUPPORT, test "$gold_cv_c_threadprivate" = "yes")
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dnl Test for the -ftls-dialect=gnu2 option.
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save_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -mtls-dialect=gnu2"
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AC_COMPILE_IFELSE([int i;], [have_tls_gnu2=yes], [have_tls_gnu2=no])
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CFLAGS="$save_CFLAGS"
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AM_CONDITIONAL(TLS_GNU2_DIALECT, test "$have_tls_gnu2" = "yes")
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dnl On GNU/Linux TLS descriptors are supported by the dynamic loader
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dnl only with glibc 2.9 or later.
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AC_CACHE_CHECK([for glibc >= 2.9], [gold_cv_lib_glibc29],
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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__ < 9)
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error
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#endif
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], [gold_cv_lib_glibc29=yes], [gold_cv_lib_glibc29=no])])
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AM_CONDITIONAL(TLS_DESCRIPTORS, test "$gold_cv_lib_glibc29" = "yes")
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dnl Check whether the compiler supports constructor priorities in
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dnl attributes, which were added in gcc 4.3.
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AC_CACHE_CHECK([for constructor priorities], [gold_cv_c_conprio],
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[AC_COMPILE_IFELSE([void f() __attribute__ ((constructor (1)));],
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[gold_cv_c_conprio=yes], [gold_cv_c_conprio=no])])
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AM_CONDITIONAL(CONSTRUCTOR_PRIORITY, test "$gold_cv_c_conprio" = "yes")
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dnl Test for the -frandom-seed option.
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AC_CACHE_CHECK([for -frandom-seed support], [gold_cv_c_random_seed],
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[save_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -frandom-seed=foo"
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AC_COMPILE_IFELSE([int i;], [gold_cv_c_random_seed=yes],
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[gold_cv_c_random_seed=no])
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CFLAGS="$save_CFLAGS"])
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if test "$gold_cv_c_random_seed" = "yes"; then
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# In Makefile, '$@' will be expanded to be the name of the file
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# being built, providing a unique seed for each file.
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RANDOM_SEED_CFLAGS=-frandom-seed=\$@
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fi
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AC_SUBST(RANDOM_SEED_CFLAGS)
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dnl On GNU/Linux ifunc is supported by the dynamic linker in glibc
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dnl 2.11 or later.
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AC_CACHE_CHECK([for glibc >= 2.11], [gold_cv_lib_glibc2_11],
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[AC_COMPILE_IFELSE([
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#include <features.h>
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#if !defined __GLIBC__
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error
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#elif __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 11)
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error
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#endif
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], [gold_cv_lib_glibc2_11=yes], [gold_cv_lib_glibc2_11=no])])
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AM_CONDITIONAL(IFUNC, test "$gold_cv_lib_glibc2_11" = "yes")
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AM_BINUTILS_WARNINGS
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WARN_CXXFLAGS=`echo ${WARN_CFLAGS} | sed -e 's/-Wstrict-prototypes//' -e 's/-Wmissing-prototypes//' -e 's/-Wshadow//'`
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AC_SUBST(WARN_CXXFLAGS)
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dnl Force support for large files by default. This may need to be
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dnl host dependent. If build == host, we can check getconf LFS_CFLAGS.
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LFS_CFLAGS="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
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AC_SUBST(LFS_CFLAGS)
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AC_CHECK_FUNCS(chsize)
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AC_REPLACE_FUNCS(pread ftruncate mremap ffsll)
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# Link in zlib if we can. This allows us to write compressed sections.
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AC_SEARCH_LIBS(zlibVersion, z, [AC_CHECK_HEADERS(zlib.h)])
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AM_CONDITIONAL(HAVE_ZLIB, test "$ac_cv_search_zlibVersion" != "no")
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dnl We have to check these in C, not C++, because autoconf generates
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dnl tests which have no type information, and current glibc provides
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dnl multiple declarations of functions like basename when compiling
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dnl with C++.
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AC_CHECK_DECLS([basename, ffs, asprintf, vasprintf, snprintf, vsnprintf, strverscmp])
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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_HEADERS(byteswap.h)
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AC_CHECK_FUNCS(mallinfo posix_fallocate readv sysconf times)
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AC_CHECK_DECLS([basename, ffs, asprintf, vasprintf, snprintf, vsnprintf, strverscmp, strndup, memmem])
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# Use of ::std::tr1::unordered_map::rehash causes undefined symbols
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# at link time with some versions of GCC.
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AC_CACHE_CHECK([whether ::std::tr1::unordered_map::rehash is usable.],
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[gold_cv_unordered_map_rehash],
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[AC_LINK_IFELSE([AC_LANG_PROGRAM([[
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#include <tr1/unordered_map>
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void bar() { ::std::tr1::unordered_map<int, int> x; x.rehash(10); }
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]])], [gold_cv_unordered_map_rehash=yes], [gold_cv_unordered_map_rehash=no])])
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if test "$gold_cv_unordered_map_rehash" = "yes"; then
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AC_DEFINE(HAVE_TR1_UNORDERED_MAP_REHASH, 1,
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[Define if ::std::tr1::unordered_map::rehash is usable])
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fi
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# gcc 4.3.0 doesn't recognize the printf attribute on a template
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# function. Check for that. This is gcc bug 35546. This test can
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# probably be removed after the bug has been fixed for a while.
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AC_CACHE_CHECK([whether we can use attributes with template functions],
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[gold_cv_template_attribute],
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[AC_COMPILE_IFELSE([
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template<typename T> extern void foo(const char*, ...)
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__attribute__ ((__format__ (__printf__, 1, 2)));
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template<typename T> void foo(const char* format, ...) {}
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void bar() { foo<int>("%s\n", "foo"); }
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], [gold_cv_template_attribute=yes], [gold_cv_template_attribute=no])])
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if test "$gold_cv_template_attribute" = "yes"; then
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AC_DEFINE(HAVE_TEMPLATE_ATTRIBUTES, 1,
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[Define if attributes work on C++ templates])
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fi
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dnl Check if the system has struct stat::st_mtim.
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AC_CACHE_CHECK([for struct stat::st_mtim.],
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[gold_cv_stat_st_mtim],
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[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
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#include <sys/stat.h>
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long bar() { struct stat s; return (long)(s.st_mtim.tv_sec + s.st_mtim.tv_sec);}
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]])], [gold_cv_stat_st_mtim=yes], [gold_cv_stat_st_mtim=no])])
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if test "$gold_cv_stat_st_mtim" = "yes"; then
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AC_DEFINE(HAVE_STAT_ST_MTIM, 1,
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[Define if struct stat has a field st_mtim with timespec for mtime])
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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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