-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Le 23/10/14 21:10, Gary V. Vaughan a écrit :
> I plan to roll a release based off the v2.4.2 tag, incorporating
> fixes for version mismatches against Mac OS Yosemite this weekend -
> in consideration of the fact that there are still known regressions
> in master.
>
> If there's anything else I should include, or suggestions for a
> better revision to base the release from, please reply ASAP :-)
>
> Cheers,
>
I'd like to see two patches committed:
1. the attached SunOS g++ shared library patch, in pkgsrc, has been
tested and running in production here since over half a year, and I
understand Joyent is using it in their local branch.
2 I vote that the '-fstack-protector*' patch be committed as well
(attached). This has been somewhat discussed in the thread labelled
(and notably dating from 02/06/2010):
> Re: Bug: linking shared libraries on Cygwin results in undefined
> references to __stack_chck_guard for code compiled with
> -fstack-protector
In particular, passing through '-fstack-protector*' is where n°1
really makes a difference.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/
iQEcBAEBAgAGBQJUSx9XAAoJECAB22fHtp27CUcH/3zuStnYT+lR9IiUlGPS7mjN
l1+OIjA5CwvxNwbHrjSAJbbWAupmLeplQsYpQL3Fsz3gNX7ljjaPCziRX/tHXOHW
XCorR3ewFNU1D4TIiHqV045pRq6TuNIcnVsMPkfJvGBCwJqMm2FOetrukDnplSAW
VeUHduPUT3PTpBLsWRrVyyV8u7gAEjudUI1NFEFlVOS9sQDS19NivWiXRWABHM1g
XkenuitcAE3PxQiHiG6TaYeQGtivtYT23stx8vrpTeagg8YBl6GhKeqo8q5yZdvH
X2qjmkJ04ZtY1OuD6s/fn/o5q9XlFSBdUSpi9CpOMLQHKjBcnbMhtgC2MZXbkHE=
=ugbL
-----END PGP SIGNATURE-----
diff --git a/m4/libtool.m4 b/m4/libtool.m4
index 900b172..7b99402 100644
--- a/m4/libtool.m4
+++ b/m4/libtool.m4
@@ -6860,9 +6860,9 @@ if test yes != "$_lt_caught_CXX_error"; then
if test yes,no = "$GXX,$with_gnu_ld"; then
_LT_TAGVAR(no_undefined_flag, $1)=' $wl-z ${wl}defs'
if $CC --version | $GREP -v '^2\.7' > /dev/null; then
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-h $wl$soname -o $lib'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags $wl-h $wl$soname -o $lib'
_LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
- $CC -shared $pic_flag -nostdlib $wl-M $wl$lib.exp $wl-h $wl$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp'
+ $CC -shared $pic_flag $wl-M $wl$lib.exp $wl-h $wl$soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
# Commands to make compiler produce verbose output that lists
# what "hidden" libraries, object files and flags are used when
@@ -6871,9 +6871,9 @@ if test yes != "$_lt_caught_CXX_error"; then
else
# g++ 2.7 appears to require '-G' NOT '-shared' on this
# platform.
- _LT_TAGVAR(archive_cmds, $1)='$CC -G -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags $wl-h $wl$soname -o $lib'
+ _LT_TAGVAR(archive_cmds, $1)='$CC -G $libobjs $deplibs $compiler_flags $wl-h $wl$soname -o $lib'
_LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
- $CC -G -nostdlib $wl-M $wl$lib.exp $wl-h $wl$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp'
+ $CC -G $wl-M $wl$lib.exp $wl-h $wl$soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
# Commands to make compiler produce verbose output that lists
# what "hidden" libraries, object files and flags are used when
--- Begin Message ---
On Sat, 15 May 2010 09:07:49 +0200
Bart Van Assche <bvanass...@acm.org> wrote:
> This behavior has been observed with libtool version 2.2.6.
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 <yselkow...@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 <yselkow...@users.sourceforge.net>
---
libltdl/config/ltmain.m4sh | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/libltdl/config/ltmain.m4sh b/libltdl/config/ltmain.m4sh
index 9e6646f..891d7bb 100644
--- a/libltdl/config/ltmain.m4sh
+++ b/libltdl/config/ltmain.m4sh
@@ -4492,10 +4492,12 @@ func_mode_link ()
# -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
-64|-mips[0-9]|-r[0-9][0-9]*|-xarch=*|-xtarget=*|+DA*|+DD*|-q*|-m*| \
- -t[45]*|-txscale*|-p|-pg|--coverage|-fprofile-*|-F*|@*|-tp=*)
+ -t[45]*|-txscale*|-p|-pg|--coverage|-fprofile-*|-F*|@*|-tp=*| \
+ -fstack-protector*)
func_quote_for_eval "$arg"
arg="$func_quote_for_eval_result"
func_append compile_command " $arg"
--
1.7.0.4
_______________________________________________
Bug-libtool mailing list
bug-libt...@gnu.org
http://lists.gnu.org/mailman/listinfo/bug-libtool
--- End Message ---
_______________________________________________
https://lists.gnu.org/mailman/listinfo/libtool
