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
# See which specific instantiations we need.
targetobjs=
all_targets=
+default_machine=
+default_size=
+default_big_endian=
+targ_32_little=
+targ_32_big=
+targ_64_little=
+targ_64_big=
for targ in $target $canon_targets; do
- targ_32_little=
- targ_32_big=
- targ_64_little=
- targ_64_big=
if test "$targ" = "all"; then
targ_32_little=yes
targ_32_big=yes
targ_64_big=yes
all_targets=yes
else
- case "$targ" in
- i?86-*)
- targ_32_little=yes
- targetobjs="$targetobjs i386.\$(OBJEXT)"
- ;;
- x86_64-*)
- targ_64_little=yes
- targetobjs="$targetobjs x86_64.\$(OBJEXT)"
- ;;
- *)
+ . ${srcdir}/configure.tgt
+
+ if test "$targ_obj" = "UNKNOWN"; then
AC_MSG_ERROR("unsupported target $targ")
- ;;
- esac
+ else
+ targetobjs="$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
+ fi
+ fi
fi
done
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, $default_big_endian,
+ [Default big endian (true or false)])
+
AC_PROG_CC
AC_PROG_CXX
AC_PROG_YACC
AM_CONDITIONAL(NATIVE_LINKER,
test "x$target_alias" = "x" -o "x$host_alias" = "x$target_alias")
AM_CONDITIONAL(GCC, test "$GCC" = yes)
-AM_CONDITIONAL(OBJDUMP_AND_CPPFILT,
- [objdump --help >/dev/null && c++filt --help >/dev/null])
dnl Some architectures do not support taking pointers of functions
dnl defined in shared libraries except in -fPIC mode. We need to
case $target_cpu in
i?86) true;;
x86_64) false;;
+ sparc64) false;;
*) true;;
esac])
AM_CONDITIONAL(STATIC_TLS, test "$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 "$gold_cv_c_threadprivate" = "yes")
+
+dnl Test for the -ftls-dialect=gnu2 option.
+save_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -mtls-dialect=gnu2"
+AC_COMPILE_IFELSE([int i;], [have_tls_gnu2=yes], [have_tls_gnu2=no])
+CFLAGS="$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 Check whether the compiler supports constructor priorities in
+dnl attributes, which were added in gcc 4.3.
+AC_CACHE_CHECK([for constructor priorities], [gold_cv_c_conprio],
+[AC_COMPILE_IFELSE([void f() __attribute__ ((constructor (1)));],
+[gold_cv_c_conprio=yes], [gold_cv_c_conprio=no])])
+
+AM_CONDITIONAL(CONSTRUCTOR_PRIORITY, test "$gold_cv_c_conprio" = "yes")
+
+dnl Test for the -frandom-seed option.
+AC_CACHE_CHECK([for -frandom-seed support], [gold_cv_c_random_seed],
+[save_CFLAGS="$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)
+
AM_BINUTILS_WARNINGS
WARN_CXXFLAGS=`echo ${WARN_CFLAGS} | sed -e 's/-Wstrict-prototypes//' -e 's/-Wmissing-prototypes//'`
dnl Force support for large files by default. This may need to be
dnl host dependent. If build == host, we can check getconf LFS_CFLAGS.
-LFS_CXXFLAGS="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
-AC_SUBST(LFS_CXXFLAGS)
+LFS_CFLAGS="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
+AC_SUBST(LFS_CFLAGS)
AC_REPLACE_FUNCS(pread)
# Link in zlib if we can. This allows us to write compressed sections.
AC_SEARCH_LIBS(zlibVersion, z, [AC_CHECK_HEADERS(zlib.h)])
+AM_CONDITIONAL(HAVE_ZLIB, test "$ac_cv_search_zlibVersion" != "no")
AC_LANG_PUSH(C++)
AC_CHECK_HEADERS(ext/hash_map ext/hash_set)
AC_CHECK_FUNCS(mallinfo)
-dnl Test whether the compiler can specify a member templates to call.
-AC_CACHE_CHECK([template member calls], [gold_cv_c_membertemplates],
+# 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([
-class c { public: template<int i> void fn(); };
-template<int i> void foo(c cv) { cv.fn<i>(); }
-template void foo<1>(c cv);],
-[gold_cv_c_membertemplates=yes], [gold_cv_c_membertemplates=no])])
-
-if test "$gold_cv_c_membertemplates" = "yes"; then
- AC_DEFINE(HAVE_MEMBER_TEMPLATE_SPECIFICATIONS, [],
- [Whether the C++ compiler can call a template member with no arguments])
+template<typename T> extern void foo(const char*, ...)
+ __attribute__ ((__format__ (__printf__, 1, 2)));
+template<typename T> void foo(const char* format, ...) {}
+void bar() { foo<int>("%s\n", "foo"); }
+], [gold_cv_template_attribute=yes], [gold_cv_template_attribute=no])])
+if test "$gold_cv_template_attribute" = "yes"; then
+ AC_DEFINE(HAVE_TEMPLATE_ATTRIBUTES, 1,
+ [Define if attributes work on C++ templates])
fi
AC_LANG_POP(C++)