Blame SOURCES/0082-configure.ac-Extend-Wno-trampolines-to-host.patch

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From 496d8726590f4ad432d40ed8e3aad7e92bb3147c Mon Sep 17 00:00:00 2001
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From: Vladimir 'phcoder' Serbinenko <phcoder@gmail.com>
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Date: Thu, 3 Jan 2013 21:34:34 +0100
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Subject: [PATCH 082/482] 	* configure.ac: Extend -Wno-trampolines to
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 host.
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---
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 ChangeLog    |  4 ++++
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 configure.ac | 17 +++++++++++++++++
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 2 files changed, 21 insertions(+)
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diff --git a/ChangeLog b/ChangeLog
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index 2717f8a..087b5c3 100644
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--- a/ChangeLog
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+++ b/ChangeLog
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@@ -1,5 +1,9 @@
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 2013-01-03  Vladimir Serbinenko  <phcoder@gmail.com>
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+	* configure.ac: Extend -Wno-trampolines to host.
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+
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+2013-01-03  Vladimir Serbinenko  <phcoder@gmail.com>
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+
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 	* grub-core/fs/iso9660.c (grub_iso9660_susp_iterate): Avoid hang if
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 	entry->len = 0.
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diff --git a/configure.ac b/configure.ac
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index a41f117..dde954e 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -358,6 +358,23 @@ AC_CHECK_HEADER([util.h], [
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 ])
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 AC_SUBST([LIBUTIL])
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+AC_CACHE_CHECK([whether -Wno-trampolines work], [grub_cv_host_cc_wnotrampolines], [
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+  SAVED_CFLAGS="$CFLAGS"
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+  # Test for -Wtrampolines rather than -Wno-trampolines to reduce confusion
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+  # in the event of later failures (since -Wno-* is always accepted, but
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+  # produces a diagnostic if something else is wrong).
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+  CFLAGS="$HOST_CFLAGS -Wtrampolines"
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+  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdarg.h>
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+int va_arg_func (int fixed, va_list args);]], [[]])],
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+      [grub_cv_host_cc_wnotrampolines=yes],
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+      [grub_cv_host_cc_wnotrampolines=no])
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+  CFLAGS="$SAVED_CFLAGS"
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+])
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+
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+if test x"$grub_host_cv_cc_wnotrampolines" = xyes ; then
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+  HOST_CFLAGS="$HOST_CFLAGS -Wno-trampolines"
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+fi
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+
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 #
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 # Check for host and build compilers.
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 #
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-- 
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1.8.2.1
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