dnl Process this file with autoconf to produce a configure script.
+dnl
+dnl Copyright 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
+dnl Free Software Foundation, Inc.
+dnl
+dnl This file is free software; you can redistribute it and/or modify
+dnl it under the terms of the GNU General Public License as published by
+dnl the Free Software Foundation; either version 3 of the License, or
+dnl (at your option) any later version.
+dnl
+dnl This program is distributed in the hope that it will be useful,
+dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+dnl GNU General Public License for more details.
+dnl
+dnl You should have received a copy of the GNU General Public License
+dnl along with this program; see the file COPYING3. If not see
+dnl <http://www.gnu.org/licenses/>.
+dnl
AC_PREREQ(2.59)
-AC_INIT
-AC_CONFIG_SRCDIR([gold.cc])
+
+AC_INIT(gold, 0.1)
+AC_CONFIG_SRCDIR(gold.cc)
AC_CANONICAL_TARGET
-AM_INIT_AUTOMAKE(gold, 0.1)
+AM_INIT_AUTOMAKE([no-dist parallel-tests])
AM_CONFIG_HEADER(config.h:config.in)
+# PR 14072
+AH_VERBATIM([00_CONFIG_H_CHECK],
+[/* Check that config.h is #included before system headers
+ (this works only for glibc, but that should be enough). */
+#if defined(__GLIBC__) && !defined(__FreeBSD_kernel__) && !defined(__CONFIG_H__)
+# error config.h must be #included before system headers
+#endif
+#define __CONFIG_H__ 1])
+
+AC_ARG_WITH(sysroot,
+[ --with-sysroot[=DIR] search for usr/lib et al within DIR],
+[sysroot=$withval], [sysroot=no])
+
+if test "$sysroot" = "yes"; then
+ sysroot='${exec_prefix}/${target_alias}/sys-root'
+elif test "$sysroot" = "no"; then
+ sysroot=
+fi
+
+sysroot_relocatable=0
+if test -n "$sysroot"; then
+ case "sysroot" in
+ "${prefix}" | "${prefix}/"* | \
+ "${exec_prefix}" | "${exec_prefix}/"* | \
+ '${prefix}' | '${prefix}/'*| \
+ '${exec_prefix}' | '${exec_prefix}/'*)
+ sysroot_relocatable=1
+ ;;
+ esac
+fi
+
+AC_DEFINE_UNQUOTED(TARGET_SYSTEM_ROOT, "$sysroot",
+ [System root for target files])
+AC_DEFINE_UNQUOTED(TARGET_SYSTEM_ROOT_RELOCATABLE, $sysroot_relocatable,
+ [Whether the system root can be relocated])
+
+dnl "install_as_default" is true if the linker to be installed as the
+dnl default linker, ld.
+dnl "installed_linker" is the installed gold linker name.
+
+installed_linker=ld.gold
+AC_ARG_ENABLE(gold,
+[[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]],
+[case "${enableval}" in
+ default)
+ install_as_default=yes
+ ;;
+ yes)
+ if test x${enable_ld} = xno; then
+ install_as_default=yes
+ fi
+ ;;
+ esac],
+[install_as_default=no])
+AC_SUBST(install_as_default)
+AC_SUBST(installed_linker)
+
+dnl For now threads are a configure time option.
+AC_ARG_ENABLE([threads],
+[ --enable-threads multi-threaded linking],
+[case "${enableval}" in
+ yes | "") threads=yes ;;
+ no) threads=no ;;
+ *) threads=yes ;;
+ esac],
+[threads=no])
+if test "$threads" = "yes"; then
+ AC_DEFINE(ENABLE_THREADS, 1,
+ [Define to do multi-threaded linking])
+fi
+AM_CONDITIONAL(THREADS, test "$threads" = "yes")
+
+AC_ARG_ENABLE([plugins],
+[ --enable-plugins linker plugins],
+[case "${enableval}" in
+ yes | "") plugins=yes ;;
+ no) plugins=no ;;
+ *) plugins=yes ;;
+ esac],
+[plugins=no])
+if test "$plugins" = "yes"; then
+ AC_DEFINE(ENABLE_PLUGINS, 1,
+ [Define to enable linker plugins])
+fi
+AM_CONDITIONAL(PLUGINS, test "$plugins" = "yes")
+
+AC_ARG_ENABLE([targets],
+[ --enable-targets alternative target configurations],
+[case "${enableval}" in
+ yes | "")
+ AC_MSG_ERROR([--enable-targets option must specify target names or 'all'])
+ ;;
+ no)
+ enable_targets=
+ ;;
+ *)
+ enable_targets=$enableval
+ ;;
+esac],
+[# For now, enable all targets by default
+ enable_targets=all
+])
+
+# Canonicalize the enabled targets.
+if test -n "$enable_targets"; then
+ for targ in `echo $enable_targets | sed -e 's/,/ /g'`; do
+ result=`$ac_config_sub $targ 2>/dev/null`
+ if test -n "$result"; then
+ canon_targets="$canon_targets $result"
+ else
+ # Permit unrecognized target names, like "all".
+ canon_targets="$canon_targets $targ"
+ fi
+ done
+fi
+
+# See which specific instantiations we need.
+targetobjs=
+all_targets=
+default_machine=
+default_size=
+default_big_endian=
+default_osabi=ELFOSABI_NONE
+targ_32_little=
+targ_32_big=
+targ_64_little=
+targ_64_big=
+for targ in $target $canon_targets; do
+ if test "$targ" = "all"; then
+ targ_32_little=yes
+ targ_32_big=yes
+ targ_64_little=yes
+ targ_64_big=yes
+ all_targets=yes
+ else
+ . ${srcdir}/configure.tgt
+
+ if test "$targ_obj" = "UNKNOWN"; then
+ AC_MSG_ERROR("unsupported target $targ")
+ else
+ targetobjs="$targetobjs ${targ_obj}.\$(OBJEXT)"
+ if test "$targ_extra_obj" != ""; then
+ targetobjs="$targetobjs ${targ_extra_obj}.\$(OBJEXT)"
+ fi
+ if test "$targ_size" = "32" -o "$targ_extra_size" = "32"; then
+ if test "$targ_big_endian" = "true" \
+ -o "$targ_extra_big_endian" = "true"; then
+ targ_32_big=yes
+ fi
+ if test "$targ_big_endian" = "false" \
+ -o "$targ_extra_big_endian" = "false"; then
+ targ_32_little=yes
+ fi
+ fi
+ if test "$targ_size" = "64" -o "$targ_extra_size" = "64"; then
+ if test "$targ_big_endian" = "true" \
+ -o "$targ_extra_big_endian" = "true"; then
+ targ_64_big=yes
+ fi
+ if test "$targ_big_endian" = "false" \
+ -o "$targ_extra_big_endian" = "false"; then
+ targ_64_little=yes
+ fi
+ fi
+
+ if test "$target" = "$targ"; then
+ default_machine=$targ_machine
+ default_size=$targ_size
+ default_big_endian=$targ_big_endian
+ default_osabi=$targ_osabi
+
+ AM_CONDITIONAL(DEFAULT_TARGET_ARM, test "$targ_obj" = "arm")
+ AM_CONDITIONAL(DEFAULT_TARGET_I386, test "$targ_obj" = "i386")
+ AM_CONDITIONAL(DEFAULT_TARGET_POWERPC, test "$targ_obj" = "powerpc")
+ AM_CONDITIONAL(DEFAULT_TARGET_SPARC, test "$targ_obj" = "sparc")
+ AM_CONDITIONAL(DEFAULT_TARGET_X86_64, test "$targ_obj" = "x86_64")
+ AM_CONDITIONAL(DEFAULT_TARGET_TILEGX, test "$targ_obj" = "tilegx")
+ DEFAULT_TARGET=${targ_obj}
+ AC_SUBST(DEFAULT_TARGET)
+ fi
+ fi
+ fi
+done
+
+# Remove any duplicates.
+to=""
+for t in $targetobjs; do
+ case " $to " in
+ *" $t "*) ;;
+ *) to="$to $t" ;;
+ esac
+done
+targetobjs=$to
+
+if test -n "$targ_32_little"; then
+ AC_DEFINE(HAVE_TARGET_32_LITTLE, 1,
+ [Define to support 32-bit little-endian targets])
+fi
+if test -n "$targ_32_big"; then
+ AC_DEFINE(HAVE_TARGET_32_BIG, 1,
+ [Define to support 32-bit big-endian targets])
+fi
+if test -n "$targ_64_little"; then
+ AC_DEFINE(HAVE_TARGET_64_LITTLE, 1,
+ [Define to support 64-bit little-endian targets])
+fi
+if test -n "$targ_64_big"; then
+ AC_DEFINE(HAVE_TARGET_64_BIG, 1,
+ [Define to support 64-bit big-endian targets])
+fi
+
+if test -n "$all_targets"; then
+ TARGETOBJS='$(ALL_TARGETOBJS)'
+else
+ TARGETOBJS="$targetobjs"
+fi
+AC_SUBST(TARGETOBJS)
+
+AC_DEFINE_UNQUOTED(GOLD_DEFAULT_MACHINE, $default_machine,
+ [Default machine code])
+AC_DEFINE_UNQUOTED(GOLD_DEFAULT_SIZE, $default_size,
+ [Default size (32 or 64)])
+AC_DEFINE_UNQUOTED(GOLD_DEFAULT_BIG_ENDIAN, $default_big_endian,
+ [Default big endian (true or false)])
+AC_DEFINE_UNQUOTED(GOLD_DEFAULT_OSABI, $default_osabi,
+ [Default OSABI code])
+
+AC_ARG_WITH(lib-path,
+[ --with-lib-path=dir1:dir2... set default LIB_PATH],
+[case "$withval" in
+ yes) LIB_PATH='"/lib:/usr/lib"' ;;
+ no) LIB_PATH='""' ;;
+ *) LIB_PATH='"'"$withval"'"' ;;
+ esac],
+[LIB_PATH='"::DEFAULT::"'])
+AC_DEFINE_UNQUOTED(LIB_PATH, $LIB_PATH,
+ [Default library search path])
+if test "x$target_alias" = "x" -o "x$host_alias" = "x$target_alias"; then
+ AC_DEFINE(NATIVE_LINKER, 1, [Whether configured as a native linker])
+fi
+
+AC_CHECK_TOOL(NM, nm)
+
AC_PROG_CC
AC_PROG_CXX
+AC_PROG_YACC
+AC_PROG_RANLIB
AC_PROG_INSTALL
+AC_PROG_LN_S
+
+AC_GNU_SOURCE
+
ZW_GNU_GETTEXT_SISTER_DIR
AM_PO_SUBDIRS
AC_EXEEXT
+AM_CONDITIONAL(NATIVE_LINKER,
+ test "x$target_alias" = "x" -o "x$host_alias" = "x$target_alias")
+AM_CONDITIONAL(GCC, test "$GCC" = yes)
+
+AM_CONDITIONAL(NATIVE_OR_CROSS_LINKER,
+ test "x$target_alias" = "x" -o "x$host_alias" = "x$target_alias" -o "x$host_alias" = "x$build_alias")
+
+dnl Test for whether static linking is supported. Some systems do not
+dnl install static libraries. This only affects the set of tests that
+dnl we run.
+AC_CACHE_CHECK([whether static linking works], [gold_cv_lib_static],
+[LDFLAGS_hold=$LDFLAGS
+LDFLAGS="$LDFLAGS -static"
+AC_LINK_IFELSE([
+AC_LANG_PROGRAM([[void f() { }]])],
+[gold_cv_lib_static=yes], [gold_cv_lib_static=no])
+LDFLAGS=$LDFLAGS_hold])
+AM_CONDITIONAL(HAVE_STATIC, test "$gold_cv_lib_static" = "yes")
+
+dnl Some architectures do not support taking pointers of functions
+dnl defined in shared libraries except in -fPIC mode. We need to
+dnl tell the unittest framework if we're compiling for one of those
+dnl targets, so it doesn't try to run the tests that do that.
+AM_CONDITIONAL(FN_PTRS_IN_SO_WITHOUT_PIC, [
+ case $target_cpu in
+ powerpc*) false;;
+ x86_64) false;;
+ sparc64) false;;
+ *) true;;
+ esac])
+
+dnl Test for gcc 4.1 or later. Full support for -mcmodel=medium is
+dnl only available in gcc 4.1.
+AC_CACHE_CHECK([for gcc >= 4.1], [gold_cv_prog_gcc41],
+[AC_COMPILE_IFELSE([
+#if !defined __GNUC__
+error
+#elif __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 1)
+error
+#endif
+], [gold_cv_prog_gcc41=yes], [gold_cv_prog_gcc41=no])])
+
+save_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -mcmodel=medium"
+AC_COMPILE_IFELSE([int i;], [have_mcmodel_medium=yes], [have_mcmodel_medium=no])
+CFLAGS="$save_CFLAGS"
+dnl Whether we can test -mcmodel=medium.
+AM_CONDITIONAL(MCMODEL_MEDIUM,
+[test "$target_cpu" = "x86_64" -a "$have_mcmodel_medium" = "yes" -a "$gold_cv_prog_gcc41" = "yes"])
+
+AC_CACHE_CHECK([whether $CC supports -fmerge-constants],
+ [gold_cv_merge_constants], [
+save_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -fmerge-constants"
+AC_COMPILE_IFELSE([const char *s = "foo";],
+ [gold_cv_merge_constants=yes],
+ [gold_cv_merge_constants=no])
+CFLAGS="$save_CFLAGS"])
+AC_SUBST([MERGE_CONSTANTS_FLAG])
+AS_IF([test "$gold_cv_merge_constants" = yes],
+ [MERGE_CONSTANTS_FLAG=-fmerge-constants],
+ [MERGE_CONSTANTS_FLAG=])
+
+dnl Test for __thread support.
+AC_CACHE_CHECK([for thread support], [gold_cv_c_thread],
+[AC_COMPILE_IFELSE([__thread int i = 1;],
+[gold_cv_c_thread=yes], [gold_cv_c_thread=no])])
+
+AM_CONDITIONAL(TLS, test "$gold_cv_c_thread" = "yes")
+
+dnl On GNU/Linux TLS in static programs only works when using glibc
+dnl 2.4 or later.
+AC_CACHE_CHECK([for glibc >= 2.4], [gold_cv_lib_glibc24],
+[AC_COMPILE_IFELSE([
+#include <features.h>
+#if !defined __GLIBC__
+error
+#elif __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 4)
+error
+#endif
+], [gold_cv_lib_glibc24=yes], [gold_cv_lib_glibc24=no])])
+
+AM_CONDITIONAL(STATIC_TLS, test "$gold_cv_lib_glibc24" = "yes")
+
+dnl Test for #pragma omp threadprivate
+AC_CACHE_CHECK([for omp support], [gold_cv_c_threadprivate],
+[save_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -fopenmp"
+AC_COMPILE_IFELSE([
+#include <omp.h>
+int i;
+#pragma omp threadprivate (i)
+], [gold_cv_c_threadprivate=yes], [gold_cv_c_threadprivate=no])
+CFLAGS="$save_CFLAGS"])
+if test "$gold_cv_c_threadprivate" = "yes"; then
+ AC_DEFINE(HAVE_OMP_SUPPORT, 1,
+ [Define if compiler supports #pragma omp threadprivate])
+fi
+AM_CONDITIONAL(OMP_SUPPORT, test "$gold_cv_c_threadprivate" = "yes")
+
+dnl Test for the -ftls-dialect=gnu2 option.
+dnl Use -Werror in case of compilers that make unknown -m options warnings.
+dnl They would pass the test here, but fail in actual use when $WARN_CFLAGS
+dnl gets set later by default Autoconf magic to include -Werror. (We are
+dnl assuming here that there is no compiler that groks -mtls-dialect=gnu2
+dnl but does not grok -Werror.)
+save_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -Werror -fpic -mtls-dialect=gnu2"
+AC_COMPILE_IFELSE([
+__thread int i;
+void foo (void)
+{
+ i = 10;
+}
+], [have_tls_gnu2=yes], [have_tls_gnu2=no])
+CFLAGS="$save_CFLAGS"
+AM_CONDITIONAL(TLS_GNU2_DIALECT, test "$have_tls_gnu2" = "yes")
+
+dnl On GNU/Linux TLS descriptors are supported by the dynamic loader
+dnl only with glibc 2.9 or later.
+AC_CACHE_CHECK([for glibc >= 2.9], [gold_cv_lib_glibc29],
+[AC_COMPILE_IFELSE([
+#include <features.h>
+#if !defined __GLIBC__
+error
+#elif __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 9)
+error
+#endif
+], [gold_cv_lib_glibc29=yes], [gold_cv_lib_glibc29=no])])
+
+AM_CONDITIONAL(TLS_DESCRIPTORS, test "$gold_cv_lib_glibc29" = "yes")
+
+dnl Test for the -frandom-seed option.
+AC_CACHE_CHECK([for -frandom-seed support], [gold_cv_c_random_seed],
+[save_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -frandom-seed=foo"
+AC_COMPILE_IFELSE([int i;], [gold_cv_c_random_seed=yes],
+[gold_cv_c_random_seed=no])
+CFLAGS="$save_CFLAGS"])
+if test "$gold_cv_c_random_seed" = "yes"; then
+ # In Makefile, '$@' will be expanded to be the name of the file
+ # being built, providing a unique seed for each file.
+ RANDOM_SEED_CFLAGS=-frandom-seed=\$@
+fi
+AC_SUBST(RANDOM_SEED_CFLAGS)
+
+dnl On GNU/Linux ifunc is supported by the dynamic linker in glibc
+dnl 2.11 or later, and by binutils 2.20.1 or later.
+AC_CACHE_CHECK([for glibc ifunc support], [gold_cv_lib_glibc_ifunc],
+[save_LDFLAGS="$LDFLAGS"
+LDFLAGS="$LDFLAGS -static"
+AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+#include <features.h>
+#if !defined __GLIBC__
+error
+#elif __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 11)
+error
+#endif
+void func (void) { }
+void invoke (void);
+__asm__(".type invoke, %gnu_indirect_function");
+typedef void (*funcptr) (void);
+funcptr dispatch (void) __asm__ ("invoke");
+funcptr dispatch (void) { return &func; }]],
+[[invoke();]])
+], [
+if ${NM} conftest$EXEEXT | grep "__rela\?_iplt_start" >/dev/null 2>&1; then
+ gold_cv_lib_glibc_ifunc=both
+else
+ gold_cv_lib_glibc_ifunc=dyn
+fi], [gold_cv_lib_glibc_ifunc=no])
+LDFLAGS="$save_LDFLAGS"])
+
+AM_CONDITIONAL(IFUNC, test "$gold_cv_lib_glibc_ifunc" != "no")
+AM_CONDITIONAL(IFUNC_STATIC, test "$gold_cv_lib_glibc_ifunc" = "both")
+
AM_BINUTILS_WARNINGS
-WARN_CXXFLAGS=`echo ${WARN_CFLAGS} | sed -e 's/-Wstrict-prototypes//' -e 's/-Wmissing-prototypes//'`
+WARN_CXXFLAGS=`echo ${WARN_CFLAGS} | sed -e 's/-Wstrict-prototypes//' -e 's/-Wmissing-prototypes//' -e 's/-Wshadow//'`
AC_SUBST(WARN_CXXFLAGS)
+AC_ARG_WITH(gold-ldflags,
+[ --with-gold-ldflags=FLAGS additional link flags for gold],
+[if test "$withval" = "no" -o "$withval" = "yes"; then
+ GOLD_LDFLAGS=
+ else
+ GOLD_LDFLAGS=$withval
+ fi],
+[GOLD_LDFLAGS=])
+AC_SUBST(GOLD_LDFLAGS)
+
+AC_ARG_WITH(gold-ldadd,
+[ --with-gold-ldadd=LIBS additional libraries for gold],
+[if test "$withval" = "no" -o "$withval" = "yes"; then
+ GOLD_LDADD=
+ else
+ GOLD_LDADD=$withval
+ fi],
+[GOLD_LDADD=])
+AC_SUBST(GOLD_LDADD)
+
dnl Force support for large files by default. This may need to be
dnl host dependent. If build == host, we can check getconf LFS_CFLAGS.
-LFS_CXXFLAGS="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
-AC_SUBST(LFS_CXXFLAGS)
+LFS_CFLAGS="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
+AC_SUBST(LFS_CFLAGS)
+
+AC_CHECK_HEADERS(sys/mman.h)
+AC_CHECK_FUNCS(chsize mmap)
+AC_REPLACE_FUNCS(pread ftruncate ffsll)
+
+AC_CACHE_CHECK([mremap with MREMAP_MAYMOVE], [gold_cv_lib_mremap_maymove],
+[AC_LINK_IFELSE([
+AC_LANG_PROGRAM([[
+#include <sys/mman.h>
+void f() { mremap (0, 0, 0, MREMAP_MAYMOVE); }
+]])], [gold_cv_lib_mremap_maymove=yes], [gold_cv_lib_mremap_maymove=no])])
+if test "$gold_cv_lib_mremap_maymove" = "yes"; then
+ AC_DEFINE(HAVE_MREMAP, 1,
+ [Define to 1 if you have the mremap function with MREMAP_MAYMOVE support])
+else
+ AC_LIBOBJ(mremap)
+fi
+
+# Link in zlib if we can. This allows us to write compressed sections.
+AM_ZLIB
+AM_CONDITIONAL(HAVE_ZLIB, test "$ac_cv_header_zlib_h" = "yes")
+
+dnl We have to check these in C, not C++, because autoconf generates
+dnl tests which have no type information, and current glibc provides
+dnl multiple declarations of functions like basename when compiling
+dnl with C++.
+AC_CHECK_DECLS([basename, ffs, asprintf, vasprintf, snprintf, vsnprintf, strverscmp])
AC_LANG_PUSH(C++)
AC_CHECK_HEADERS(tr1/unordered_set tr1/unordered_map)
AC_CHECK_HEADERS(ext/hash_map ext/hash_set)
+AC_CHECK_HEADERS(byteswap.h)
-dnl Test whether the compiler can specify a member templates to call.
+dnl When plugins enabled dynamic loader interface is required. Check headers
+dnl which may provide this interface. Add the necessary library to link.
+AC_CHECK_HEADERS(windows.h)
+AC_CHECK_HEADERS(dlfcn.h)
+AC_SEARCH_LIBS(dlopen, [dl dld])
+case "$ac_cv_search_dlopen" in
+ no*) DLOPEN_LIBS="";;
+ *) DLOPEN_LIBS="$ac_cv_search_dlopen";;
+esac
+AC_SUBST(DLOPEN_LIBS)
+
+AC_CHECK_FUNCS(mallinfo posix_fallocate fallocate readv sysconf times)
+AC_CHECK_DECLS([basename, ffs, asprintf, vasprintf, snprintf, vsnprintf, strverscmp, strndup, memmem])
+
+# Use of ::std::tr1::unordered_map::rehash causes undefined symbols
+# at link time with some versions of GCC.
+AC_CACHE_CHECK([whether ::std::tr1::unordered_map::rehash is usable.],
+[gold_cv_unordered_map_rehash],
+[AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+#include <tr1/unordered_map>
+void bar() { ::std::tr1::unordered_map<int, int> x; x.rehash(10); }
+]])], [gold_cv_unordered_map_rehash=yes], [gold_cv_unordered_map_rehash=no])])
+if test "$gold_cv_unordered_map_rehash" = "yes"; then
+ AC_DEFINE(HAVE_TR1_UNORDERED_MAP_REHASH, 1,
+ [Define if ::std::tr1::unordered_map::rehash is usable])
+fi
+
+# Use of tr1/unordered_map with off_t as a key is not supported on GCC
+# 4.1.xx when compiling in 32-bit mode with a 64-bit off_t type.
+AC_CACHE_CHECK([whether std::tr1::hash<off_t> is defined],
+[gold_cv_hash_off_t],
+[CXXFLAGS_hold=$CXXFLAGS
+CXXFLAGS="$CXXFLAGS $LFS_CFLAGS"
AC_COMPILE_IFELSE([
-class c { public: template<int i> void fn(); };
-template<int i> void foo(c cv) { cv.fn<i>(); }
-template void foo<1>(c cv);],
-[AC_DEFINE(HAVE_MEMBER_TEMPLATE_SPECIFICATIONS, [],
- [Whether the C++ compiler can call a template member with no arguments])])
+#include <sys/types.h>
+#include <tr1/unordered_map>
+std::tr1::hash<off_t> h;
+],
+[gold_cv_hash_off_t=yes],
+[gold_cv_hash_off_t=no])
+CXXFLAGS=$CXXFLAGS_hold])
+if test "$gold_cv_hash_off_t" = "yes"; then
+ AC_DEFINE(HAVE_TR1_HASH_OFF_T, 1,
+ [Define if std::tr1::hash<off_t> is usable])
+fi
+
+# gcc 4.3.0 doesn't recognize the printf attribute on a template
+# function. Check for that. This is gcc bug 35546. This test can
+# probably be removed after the bug has been fixed for a while.
+AC_CACHE_CHECK([whether we can use attributes with template functions],
+[gold_cv_template_attribute],
+[AC_COMPILE_IFELSE([
+template<typename T> extern void foo(const char*, ...)
+ __attribute__ ((__format__ (__printf__, 1, 2)));
+template<typename T> void foo(const char* format, ...) {}
+void bar() { foo<int>("%s\n", "foo"); }
+], [gold_cv_template_attribute=yes], [gold_cv_template_attribute=no])])
+if test "$gold_cv_template_attribute" = "yes"; then
+ AC_DEFINE(HAVE_TEMPLATE_ATTRIBUTES, 1,
+ [Define if attributes work on C++ templates])
+fi
+
+dnl Check if the system has struct stat::st_mtim.
+AC_CACHE_CHECK([for struct stat::st_mtim.],
+[gold_cv_stat_st_mtim],
+[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+#include <sys/stat.h>
+long bar() { struct stat s; return (long)(s.st_mtim.tv_sec + s.st_mtim.tv_sec);}
+]])], [gold_cv_stat_st_mtim=yes], [gold_cv_stat_st_mtim=no])])
+if test "$gold_cv_stat_st_mtim" = "yes"; then
+ AC_DEFINE(HAVE_STAT_ST_MTIM, 1,
+ [Define if struct stat has a field st_mtim with timespec for mtime])
+fi
+
+dnl Check if gcc supports the -gpubnames option.
+dnl Use -Werror in case of compilers that make unknown -g options warnings.
+dnl They would pass the test here, but fail in actual use when $WARN_CFLAGS
+dnl gets set later by default Autoconf magic to include -Werror. (We are
+dnl assuming here that there is no compiler that groks -gpubnames
+dnl but does not grok -Werror.)
+save_CXXFLAGS="$CXXFLAGS"
+CXXFLAGS="$CXXFLAGS -Werror -gpubnames"
+AC_COMPILE_IFELSE([int i;], [have_pubnames=yes], [have_pubnames=no])
+CXXFLAGS="$save_CXXFLAGS"
+AM_CONDITIONAL(HAVE_PUBNAMES, test "$have_pubnames" = "yes")
AC_LANG_POP(C++)
+AC_CHECK_HEADERS(locale.h)
+AC_CHECK_FUNCS(setlocale)
+AM_LC_MESSAGES
+
AM_MAINTAINER_MODE
-AC_OUTPUT(Makefile po/Makefile.in:po/Make-in)
+AC_OUTPUT(Makefile testsuite/Makefile po/Makefile.in:po/Make-in)