From c389883ba2c93dfc11ac410a952f42f1065057d2 Mon Sep 17 00:00:00 2001
From: Jelmer Vernooij <jelmer@samba.org>
Date: Mon, 6 Mar 2006 22:01:03 +0000
Subject: r13902: Stricter checking for the -fvisibility flag Add two more
 proto headers. (This used to be commit
 0c95bf0cd33d8a6c35f692b796d7fbfd98b4d068)

---
 source4/build/m4/check_cc.m4 | 29 ++++++++++++++++++-----------
 1 file changed, 18 insertions(+), 11 deletions(-)

(limited to 'source4/build/m4')

diff --git a/source4/build/m4/check_cc.m4 b/source4/build/m4/check_cc.m4
index 33bb7050af..72a882b7d8 100644
--- a/source4/build/m4/check_cc.m4
+++ b/source4/build/m4/check_cc.m4
@@ -115,18 +115,25 @@ AC_TRY_RUN([#include "${srcdir-.}/build/tests/trivial.c"],
 #
 # Check if the compiler support ELF visibility for symbols
 #
+
 visibility_attribute=no
-AC_MSG_CHECKING([whether the C compiler supports the visibility attribute])
-AC_TRY_RUN([
-#pragma GCC visibility push(hidden)
-void vis_foo1(void) {}
-__attribute__((visibility("default"))) void vis_foo2(void) {}
-#include "${srcdir-.}/build/tests/trivial.c"
-], [
-	AC_MSG_RESULT(yes)
-	AC_DEFINE(HAVE_VISIBILITY_ATTR,1,[Whether the C compiler supports the visibility attribute])
-	visibility_attribute=yes
-], [AC_MSG_RESULT(no);])
+if test x"$GCC" = x"yes" ; then
+    AX_CFLAGS_GCC_OPTION([-fvisibility=hidden], VISIBILITY_CFLAGS)
+fi
+
+if test -n "$VISIBILITY_CFLAGS"; then
+	AC_MSG_CHECKING([whether the C compiler supports the visibility attribute])
+	AC_TRY_RUN([
+	#pragma GCC visibility push(hidden)
+	void vis_foo1(void) {}
+	__attribute__((visibility("default"))) void vis_foo2(void) {}
+	#include "${srcdir-.}/build/tests/trivial.c"
+	], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_VISIBILITY_ATTR,1,[Whether the C compiler supports the visibility attribute])
+		visibility_attribute=yes
+	], [AC_MSG_RESULT(no);])
+fi
 AC_SUBST(visibility_attribute)
 
 #
-- 
cgit