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(__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=$withval], [sysroot=no])
default_ld=
AC_ARG_ENABLE(ld,
[[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]],
-[case "${enableval}" in
+[case "${enableval}" in
default)
default_ld=ld.bfd
;;
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
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=$LDFLAGS
+[LDFLAGS_hold=$LDFLAGS
LDFLAGS="$LDFLAGS -static"
-[AC_LINK_IFELSE([
+AC_LINK_IFELSE([
AC_LANG_PROGRAM([[void f() { }]])],
-[gold_cv_lib_static=yes], [gold_cv_lib_static=no])])
+[gold_cv_lib_static=yes], [gold_cv_lib_static=no])
+LDFLAGS=$LDFLAGS_hold])
AM_CONDITIONAL(HAVE_STATIC, test "$gold_cv_lib_static" = "yes")
dnl Some architectures do not support taking pointers of functions
#endif
], [gold_cv_prog_gcc41=yes], [gold_cv_prog_gcc41=no])])
+save_CFLAGS="$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 "$target_cpu" = "x86_64" -a "$gold_cv_prog_gcc41" = "yes"])
+[test "$target_cpu" = "x86_64" -a "$have_mcmodel_medium" = "yes" -a "$gold_cv_prog_gcc41" = "yes"])
dnl Test for __thread support.
AC_CACHE_CHECK([for thread support], [gold_cv_c_thread],
dnl Test for the -ftls-dialect=gnu2 option.
save_CFLAGS="$CFLAGS"
-CFLAGS="$CFLAGS -mtls-dialect=gnu2"
-AC_COMPILE_IFELSE([int i;], [have_tls_gnu2=yes], [have_tls_gnu2=no])
+CFLAGS="$CFLAGS -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 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 >= 2.11], [gold_cv_lib_glibc2_11],
-[AC_COMPILE_IFELSE([
+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
-__asm__(".type foo, %gnu_indirect_function");
-], [gold_cv_lib_glibc2_11=yes], [gold_cv_lib_glibc2_11=no])])
+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_glibc2_11" = "yes")
+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 ${WARN_CFLAGS} | sed -e 's/-Wstrict-prototypes//' -e 's/-Wmissing-prototypes//' -e 's/-Wshadow//'`
AC_SUBST(WARN_CXXFLAGS)
+AC_ARG_WITH(gold-ldflags,
+[ --with-gold-ldflags=FLAGS additional link flags for gold],
+[if test "$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_CFLAGS="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
AC_LANG_POP(C++)
+AC_CHECK_HEADERS(locale.h)
+AC_CHECK_FUNCS(setlocale)
+AM_LC_MESSAGES
+
AM_MAINTAINER_MODE
AC_OUTPUT(Makefile testsuite/Makefile po/Makefile.in:po/Make-in)