Your message dated Fri, 07 Feb 2020 19:35:00 +0000
with message-id <[email protected]>
and subject line Bug#751161: fixed in libtool 2.4.6-12
has caused the Debian Bug report #751161,
regarding libtool: strips fcilkplus and sanitizer flags
to be marked as done.
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751161: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=751161
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: libtool
Version: 2.4.2-1.7
Severity: important
Forwarded: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=17750
hi,
this copy of a upstream bug report. As Debian now has gcc-4.9 available
this should be fixed for jessie regardless of upstreams reaction time.
gcc-4.9 now supports cilkplus with the -fcilkplus flag.
libtool strips this flag from LDFLAGS leading to an wrongly linked library.
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 = cilk_spawn atoi(a);
return a;
}
then configure build with:
./configure CFLAGS="-fcilkplus" LDFLAGS="-fcilkplus" CC=gcc-4.9
during linking -fcilkplus is not used and the library is underlinked:
./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 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007eff507f3000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007eff5044a000)
libdl.so.2 => /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.so)
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.so)
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= flags are stripped from LDFLAGS, they
should probably be added too.
Cheers,
Julian Taylor
signature.asc
Description: OpenPGP digital signature
--- End Message ---
--- Begin Message ---
Source: libtool
Source-Version: 2.4.6-12
We believe that the bug you reported is fixed in the latest version of
libtool, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to [email protected],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Alastair McKinstry <[email protected]> (supplier of updated libtool package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [email protected])
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Format: 1.8
Date: Fri, 07 Feb 2020 16:15:16 +0000
Source: libtool
Architecture: source
Version: 2.4.6-12
Distribution: unstable
Urgency: medium
Maintainer: Alastair McKinstry <[email protected]>
Changed-By: Alastair McKinstry <[email protected]>
Closes: 243618 253904 258261 644744 751161 864018 866631 924184 948511 949270
949271
Changes:
libtool (2.4.6-12) unstable; urgency=medium
.
[ Helmut Grohe ]
* Avoid build-dependency cycle with libtool. Closes: #924184
[ Vagrant Cascadian ]
* all ./configure with explicit GREP=/bin/grep and SED=/bin/sed,
to prevent variation when built on a merged /usr system.
Closes: #949270
* Remove file-prefix-map/debug-prefix-map arguments from the libtool.1
manpage,
which results in an unreproducible package when the build path varies.
Closes: #949271
[ Alastair McKinstry ]
* Standards-Version: 4.5.0
* Use debhelper-compat (= 12)
* Increment AC_PREREQ to 2.63. Closes: #948511
* Remove unsafe debug_cmd. Closes: #866631
* Close ENOFIX a 15-yr old wishlist. Closes: #258261
* Close old bugs believed fixed. Closes: #243618, #644744
* Minor documentation fix. Closes: #253904
* Set AR_FLAGS=cr by default. Closes: #864018
[ Vincent Lefevre ]
* Pass fcilkplus and sanitizer flags unchanged. Closes: #751161
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