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