dnl <http://www.gnu.org/licenses/>.
dnl
-AC_PREREQ(2.59)
-
AC_INIT(gold, 0.1)
AC_CONFIG_SRCDIR(gold.cc)
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([
+[AC_COMPILE_IFELSE([AC_LANG_SOURCE([
#if !defined __GNUC__
error
#elif __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 1)
error
#endif
-], [gold_cv_prog_gcc41=yes], [gold_cv_prog_gcc41=no])])
+])], [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])
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([int i;])], [have_mcmodel_medium=yes], [have_mcmodel_medium=no])
CFLAGS="$save_CFLAGS"
dnl Whether we can test -mcmodel=medium.
AM_CONDITIONAL(MCMODEL_MEDIUM,
[gold_cv_merge_constants], [
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -fmerge-constants"
-AC_COMPILE_IFELSE([const char *s = "foo";],
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([const char *s = "foo";])],
[gold_cv_merge_constants=yes],
[gold_cv_merge_constants=no])
CFLAGS="$save_CFLAGS"])
dnl Test for __thread support.
AC_CACHE_CHECK([for thread support], [gold_cv_c_thread],
-[AC_COMPILE_IFELSE([__thread int i = 1;],
+[AC_COMPILE_IFELSE([AC_LANG_SOURCE([__thread int i = 1;])],
[gold_cv_c_thread=yes], [gold_cv_c_thread=no])])
AM_CONDITIONAL(TLS, test "$gold_cv_c_thread" = "yes")
dnl On GNU/Linux TLS in static programs only works when using glibc
dnl 2.4 or later.
AC_CACHE_CHECK([for glibc >= 2.4], [gold_cv_lib_glibc24],
-[AC_COMPILE_IFELSE([
+[AC_COMPILE_IFELSE([AC_LANG_SOURCE([
#include <features.h>
#if !defined __GLIBC__
error
#elif __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 4)
error
#endif
-], [gold_cv_lib_glibc24=yes], [gold_cv_lib_glibc24=no])])
+])], [gold_cv_lib_glibc24=yes], [gold_cv_lib_glibc24=no])])
AM_CONDITIONAL(STATIC_TLS, test "$gold_cv_lib_glibc24" = "yes")
AC_CACHE_CHECK([for omp support], [gold_cv_c_threadprivate],
[save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -fopenmp"
-AC_COMPILE_IFELSE([
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([
#include <omp.h>
int i;
#pragma omp threadprivate (i)
-], [gold_cv_c_threadprivate=yes], [gold_cv_c_threadprivate=no])
+])], [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,
dnl but does not grok -Werror.)
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Werror -fpic -mtls-dialect=gnu2"
-AC_COMPILE_IFELSE([
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([
__thread int i;
void foo (void)
{
i = 10;
}
-], [have_tls_gnu2=yes], [have_tls_gnu2=no])
+])], [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([
+[AC_COMPILE_IFELSE([AC_LANG_SOURCE([
#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])])
+])], [gold_cv_lib_glibc29=yes], [gold_cv_lib_glibc29=no])])
AM_CONDITIONAL(TLS_DESCRIPTORS, test "$gold_cv_lib_glibc29" = "yes")
AC_CACHE_CHECK([for -frandom-seed support], [gold_cv_c_random_seed],
[save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -frandom-seed=foo"
-AC_COMPILE_IFELSE([int i;], [gold_cv_c_random_seed=yes],
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([int i;])], [gold_cv_c_random_seed=yes],
[gold_cv_c_random_seed=no])
CFLAGS="$save_CFLAGS"])
if test "$gold_cv_c_random_seed" = "yes"; then
dnl but does not grok -Werror.)
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Werror -gpubnames"
-AC_COMPILE_IFELSE([int i;], [have_pubnames=yes], [have_pubnames=no])
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([int i;])], [have_pubnames=yes], [have_pubnames=no])
CFLAGS="$save_CFLAGS"
AM_CONDITIONAL(HAVE_PUBNAMES, test "$have_pubnames" = "yes")
dnl Check if gcc supports the -fno-use-linker-plugin option.
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Werror -fno-use-linker-plugin"
-AC_COMPILE_IFELSE([int i;], [have_no_use_linker_plugin=yes], [have_no_use_linker_plugin=no])
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([int i;])], [have_no_use_linker_plugin=yes], [have_no_use_linker_plugin=no])
CFLAGS="$save_CFLAGS"
AM_CONDITIONAL(HAVE_NO_USE_LINKER_PLUGIN, test "$have_no_use_linker_plugin" = "yes")
[gold_cv_hash_off_t],
[CXXFLAGS_hold=$CXXFLAGS
CXXFLAGS="$CXXFLAGS $LFS_CFLAGS"
-AC_COMPILE_IFELSE([
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([
#include <sys/types.h>
#include <tr1/unordered_map>
std::tr1::hash<off_t> h;
-],
+])],
[gold_cv_hash_off_t=yes],
[gold_cv_hash_off_t=no])
CXXFLAGS=$CXXFLAGS_hold])
# 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([
+[AC_COMPILE_IFELSE([AC_LANG_SOURCE([
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])])
+])], [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])