From 779dc15bf63287eeae8184602c018b5120ee411f Mon Sep 17 00:00:00 2001
From: Vladimir 'phcoder' Serbinenko <phcoder@gmail.com>
Date: Sun, 14 Nov 2010 17:13:44 +0100
Subject: [PATCH] 	* configure.ac: Add -Wno-trampolines when supported.

---
 ChangeLog    |  4 ++++
 configure.ac | 14 ++++++++++++++
 2 files changed, 18 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index 1960277c0..c282b309c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2010-11-14  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* configure.ac: Add -Wno-trampolines when supported.
+
 2010-11-14  Modestas Vainius <modax@debian.org>
 
 	* grub-core/kern/emu/getroot.c (grub_util_is_dmraid): Recognise ddf1_
diff --git a/configure.ac b/configure.ac
index 1ad3a8e98..a576d1c83 100644
--- a/configure.ac
+++ b/configure.ac
@@ -668,6 +668,20 @@ if test x"$grub_cv_cc_isystem" = xyes ; then
 fi
 fi
 
+AC_CACHE_CHECK([whether -Wno-trampolines work], [grub_cv_cc_wnotrampolines], [
+  SAVED_CFLAGS="$CFLAGS"
+  CFLAGS="$TARGET_CFLAGS -Wno-trampolines"
+  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdarg.h>
+int va_arg_func (int fixed, va_list args);]], [[]])],
+      [grub_cv_cc_wnotrampolines=yes],
+      [grub_cv_cc_wnotrampolines=no])
+  CFLAGS="$SAVED_CFLAGS"
+])
+
+if test x"$grub_cv_cc_wnotrampolines" = xyes ; then
+  TARGET_CFLAGS="$TARGET_CFLAGS -Wno-trampolines"
+fi
+
 # Restore the flags.
 CC="$tmp_CC"
 CFLAGS="$tmp_CFLAGS"