Received: (at 17750) by debbugs.gnu.org; 3 May 2019 13:55:58 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri May 03 09:55:57 2019 Received: from localhost ([127.0.0.1]:49272 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1hMYfN-0007Up-Hl for submit <at> debbugs.gnu.org; Fri, 03 May 2019 09:55:57 -0400 Received: from cventin.lip.ens-lyon.fr ([140.77.13.17]:40146) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <vincent@HIDDEN>) id 1hMYfL-0007Uh-FL for 17750 <at> debbugs.gnu.org; Fri, 03 May 2019 09:55:56 -0400 Received: from vlefevre by cventin.lip.ens-lyon.fr with local (Exim 4.92) (envelope-from <vincent@HIDDEN>) id 1hMYfJ-00025o-Vq; Fri, 03 May 2019 15:55:53 +0200 Date: Fri, 3 May 2019 15:55:53 +0200 From: Vincent Lefevre <vincent@HIDDEN> To: Julian Taylor <jtaylor.debian@HIDDEN> Subject: Re: libtool strips fcilkplus and sanitizer flags Message-ID: <20190503135553.GA26493@HIDDEN> References: <53976641.3070305@HIDDEN> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <53976641.3070305@HIDDEN> X-Mailer-Info: https://www.vinc17.net/mutt/ User-Agent: Mutt/1.11.4+195 (861a7e47) vl-117499 (2019-05-02) X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 17750 Cc: 17750 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Hi, On 2014-06-10 22:10:41 +0200, Julian Taylor wrote: > This is identical to libtools stripping of fopenmp and the fix is the > same, add -fcilkplus to the whitelist. > > Similar the new -fsanitizer= flags are stripped from LDFLAGS, they > should probably be added too. The -fsanitizer=* one was fixed in 2015, but there are still issues due to the fact that -static-* options are not passed to the linker (-static-libasan in my case). I've posted a patch for both -fcilkplus and -static-* there: http://lists.gnu.org/archive/html/libtool-patches/2019-05/msg00000.html For Debian users, it does not apply, and I've posted a specific patch there: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=751161#14 -- Vincent Lefèvre <vincent@HIDDEN> - Web: <https://www.vinc17.net/> 100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/> Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
bug-libtool@HIDDEN:bug#17750; Package libtool.
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Date: Tue, 10 Jun 2014 22:10:41 +0200
From: Julian Taylor <jtaylor.debian@HIDDEN>
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Subject: libtool strips fcilkplus and sanitizer flags
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hi,
gcc-4.9 now supports cilkplus with the -fcilkplus flag.
libtool strips this flag from LDFLAGS leading to an wrongly linked librar=
y.
To reproduce choose a random libtool based project (e.g. libmatheval)
and add this function in a random file (e.g. lib/node.c):
#include <cilk/cilk.h>
int n(char * a)
{
a =3D cilk_spawn atoi(a);
return a;
}
then configure build with:
=2E/configure CFLAGS=3D"-fcilkplus" LDFLAGS=3D"-fcilkplus" CC=3Dgcc-4.9
during linking -fcilkplus is not used and the library is underlinked
root@ubuntu:/libmatheval-1.1.11+dfsg# ldd -r ./lib/.libs/libmatheval.so
linux-vdso.so.1 (0x00007fffccdc4000)
/usr/lib/libeatmydata/libeatmydata.so (0x00007eff50cfd000)
/usr/lib/cowdancer/libcowdancer.so (0x00007eff50af9000)
libm.so.6 =3D> /lib/x86_64-linux-gnu/libm.so.6 (0x00007eff507f3000)
libc.so.6 =3D> /lib/x86_64-linux-gnu/libc.so.6 (0x00007eff5044a000)
libdl.so.2 =3D> /lib/x86_64-linux-gnu/libdl.so.2 (0x00007eff50246000)
/lib64/ld-linux-x86-64.so.2 (0x00007eff5110f000)
undefined symbol: __cilkrts_rethrow (./lib/.libs/libmatheval.so)
undefined symbol: __cilkrts_enter_frame_1 (./lib/.libs/libmatheval.so)
undefined symbol: __cilkrts_save_fp_ctrl_state (./lib/.libs/libmatheval.s=
o)
undefined symbol: __cilkrts_sync (./lib/.libs/libmatheval.so)
undefined symbol: __cilkrts_leave_frame (./lib/.libs/libmatheval.so)
undefined symbol: __cilkrts_enter_frame_fast_1 (./lib/.libs/libmatheval.s=
o)
it needs to be linked against libcilkrts.so.5
This is identical to libtools stripping of fopenmp and the fix is the
same, add -fcilkplus to the whitelist.
Similar the new -fsanitizer=3D flags are stripped from LDFLAGS, they
should probably be added too.
Cheers,
Julian Taylor
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Julian Taylor <jtaylor.debian@HIDDEN>:bug-libtool@HIDDEN.
Full text available.bug-libtool@HIDDEN:bug#17750; Package libtool.
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