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libtool: Let -fstack-protector passed to link step 

linker should add -lssp to linker cmdline when
-fstack-protector therefore add this knowledge to libtool
otherwise packages will fail to link

(From OE-Core rev: d1756ff379ab310bfa6323d8643b7e9d764f94bf)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Khem Raj 2012-06-09 09:43:02 -07:00 committed by Richard Purdie
parent 1988bc0ad4
commit f6a4d74d8b
2 changed files with 55 additions and 1 deletions
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3
meta/recipes-devtools/libtool/libtool-2.4.2.inc
View File

@ -8,7 +8,7 @@ LICENSE = "GPLv2 & LGPLv2.1"
LIC_FILES_CHKSUM = "file://COPYING;md5=751419260aa954499f7abaabaa882bbe \
file://libltdl/COPYING.LIB;md5=e3eda01d9815f8d24aae2dbd89b68b06"
INC_PR = "r3"
INC_PR = "r4"
SRC_URI = "${GNU_MIRROR}/libtool/libtool-${PV}.tar.gz \
file://trailingslash.patch \
@ -18,6 +18,7 @@ SRC_URI = "${GNU_MIRROR}/libtool/libtool-${PV}.tar.gz \
file://fix-final-rpath.patch \
file://avoid_absolute_paths_for_general_utils.patch \
file://fix-rpath.patch \
file://respect-fstack-protector.patch \
"
SRC_URI[md5sum] = "d2f3b7d4627e69e13514a40e72a24d50"

53
meta/recipes-devtools/libtool/libtool/respect-fstack-protector.patch Normal file
View File

@ -0,0 +1,53 @@
Source: http://permalink.gmane.org/gmane.comp.gnu.libtool.bugs/7341
Bug confirmed. When code is compiled with -fstack-protector{,-all},
GCC "emits extra code to check for buffer overflows, such as stack
smashing attacks". This extra code uses symbols from libssp, and
therefore (at least) Cygwin's GCC specs contain:
*link_ssp:
%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}
Therefore, when libtool fails to pass -fstack-protector{,-all} at link
stage, the link fails.
Patch attached. (Yes, I have a copyright assignment on file.)
Yaakov
Cygwin/X
From b79f4e117b6f73cc461a2e232063e08481d33300 Mon Sep 17 00:00:00 2001
From: Yaakov Selkowitz <yselkowitz <at> users.sourceforge.net>
Date: Tue, 1 Jun 2010 22:18:51 -0500
Subject: [PATCH] Fix linking with -fstack-protector
* libltdl/config/ltmain.m4sh (func_mode_link): Pass -fstack-protector*
to the linker as it is required at link time to resolve libssp symbols.
Signed-off-by: Yaakov Selkowitz <yselkowitz <at> users.sourceforge.net>
---
libltdl/config/ltmain.m4sh | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Upstream-Status: Pending
Index: libtool-2.4.2/libltdl/config/ltmain.m4sh
===================================================================
--- libtool-2.4.2.orig/libltdl/config/ltmain.m4sh 2012-06-01 12:35:44.089638130 -0700
+++ libtool-2.4.2/libltdl/config/ltmain.m4sh 2012-06-01 12:37:25.789643055 -0700
@@ -5067,13 +5067,14 @@
# -m*, -t[45]*, -txscale* architecture-specific flags for GCC
# -F/path path to uninstalled frameworks, gcc on darwin
# -p, -pg, --coverage, -fprofile-* profiling flags for GCC
+ # -fstack-protector* stack protector flags for GCC
# @file GCC response files
# -tp=* Portland pgcc target processor selection
# --sysroot=* for sysroot support
# -O*, -flto*, -fwhopr*, -fuse-linker-plugin GCC link-time optimization
-64|-mips[0-9]|-r[0-9][0-9]*|-xarch=*|-xtarget=*|+DA*|+DD*|-q*|-m*| \
-t[45]*|-txscale*|-p|-pg|--coverage|-fprofile-*|-F*|@*|-tp=*|--sysroot=*| \
- -O*|-flto*|-fwhopr*|-fuse-linker-plugin)
+ -O*|-flto*|-fwhopr*|-fuse-linker-plugin|-fstack-protector*)
func_quote_for_eval "$arg"
arg="$func_quote_for_eval_result"
func_append compile_command " $arg"