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package/oprofile: fix configure test with gcc 4.9.x 

Backport the upstream patch that fix a configure test breaked with gcc 4.9.x.

This patch must be removed with the next version bump.

Fixes:
http://autobuild.buildroot.net/results/f80/f8083f038d0efb7b5becf7810b6fcaf440fb8294/build-end.log

Signed-off-by: Romain Naour <romain.naour@openwide.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Romain Naour 2014-08-17 19:22:11 +02:00 committed by Thomas Petazzoni
parent 8c94df28c7
commit 702a461c4d
1 changed files with 45 additions and 0 deletions
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45
package/oprofile/oprofile-003-configure-fix-test-for-synth-check-with-GCC-4.9.0.patch Normal file
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@ -0,0 +1,45 @@
From cc08b52f8376867121f22e166636779e2a1a6e48 Mon Sep 17 00:00:00 2001
From: Aaro Koskinen <aaro.koskinen@iki.fi>
Date: Mon, 12 May 2014 08:28:46 -0500
Subject: [PATCH 1/1] configure: fix test-for-synth check with GCC 4.9.0
With GCC 4.9.0 oprofile 0.9.9 build fails on non-PPC platfroms because
the "test-for-synth" configure check result is incorrect: There is a NULL
pointer dereference in the test program, so the compiler seems to optimize
the rest of the code away, and the test will always succeed regardless
whether powerpc_elf64_vec/bfd_elf64_powerpc_vec are present or not.
Fix by allocating the referred struct statically.
While at it, also include stdio.h to avoid a compiler warning.
[Romain: backport the patch to 0.9.9]
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Romain Naour <romain.naour@openwide.fr>
Conflicts:
m4/binutils.m4
---
m4/binutils.m4 | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/m4/binutils.m4 b/m4/binutils.m4
index 25fb15a..3486488 100644
--- a/m4/binutils.m4
+++ b/m4/binutils.m4
@@ -27,8 +27,10 @@ if test "$OS" = "Linux"; then
AC_MSG_CHECKING([whether bfd_get_synthetic_symtab() exists in BFD library])
rm -f test-for-synth
AC_LANG_CONFTEST(
- [AC_LANG_PROGRAM([[#include <bfd.h>]],
- [[asymbol * synthsyms; bfd * ibfd = 0;
+ [AC_LANG_PROGRAM([[#include <bfd.h>]
+ [#include <stdio.h>]
+ [static bfd _ibfd;]],
+ [[asymbol * synthsyms; bfd * ibfd = &_ibfd;
long synth_count = bfd_get_synthetic_symtab(ibfd, 0, 0, 0, 0, &synthsyms);
extern const bfd_target bfd_elf64_powerpc_vec;
extern const bfd_target bfd_elf64_powerpcle_vec;
--
1.9.3