Add SORT_BY_INIT_PRIORITY.

[external/binutils.git] / ld / configure.in

diff --git a/ld/configure.in b/ld/configure.in
index 85fe903..15d7685 100644 (file)
--- a/ld/configure.in
+++ b/ld/configure.in
@@ -5,6 +5,7 @@ AC_INIT
 AC_CONFIG_SRCDIR(ldmain.c)
 
 AC_CANONICAL_TARGET
+AC_CANONICAL_BUILD
 AC_ISC_POSIX
 
 changequote(,)dnl
@@ -175,6 +176,30 @@ if test x$enable_plugins = xno ; then
 fi
 AM_CONDITIONAL([ENABLE_PLUGINS], [test x$enable_plugins = xyes])
 
+AC_ARG_ENABLE(initfini-array,
+       [  --enable-initfini-array      use .init_array/.fini_array sections],
+       [], [
+AC_CACHE_CHECK(for .preinit_array/.init_array/.fini_array support,
+                gcc_cv_initfini_array, [dnl
+  if test "x${build}" = "x${target}" ; then
+    AC_RUN_IFELSE([AC_LANG_SOURCE([
+static int x = -1;
+int main (void) { return x; }
+int foo (void) { x = 0; }
+int (*fp) (void) __attribute__ ((section (".init_array"))) = foo;])],
+            [gcc_cv_initfini_array=yes], [gcc_cv_initfini_array=no],
+            [gcc_cv_initfini_array=no])
+   else
+     gcc_cv_initfini_array=no
+   fi])
+  enable_initfini_array=$gcc_cv_initfini_array
+])
+AC_SUBST(enable_initfini_array)
+if test $enable_initfini_array = yes; then
+  AC_DEFINE(HAVE_INITFINI_ARRAY, 1,
+    [Define .init_array/.fini_array sections are available and working.])
+fi
+
 AC_MSG_CHECKING(for a known getopt prototype in unistd.h)
 AC_CACHE_VAL(ld_cv_decl_getopt_unistd_h,
 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <unistd.h>], [extern int getopt (int, char *const*, const char *);])],