GNU bug report logs -
#17750
libtool strips fcilkplus and sanitizer flags
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Report forwarded
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bug-libtool <at> gnu.org
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bug#17750
; Package
libtool
.
(Tue, 10 Jun 2014 20:23:01 GMT)
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Julian Taylor <jtaylor.debian <at> googlemail.com>
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New bug report received and forwarded. Copy sent to
bug-libtool <at> gnu.org
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(Tue, 10 Jun 2014 20:23:02 GMT)
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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):
[Message part 1 (text/plain, inline)]
hi,
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
root <at> 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 => /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
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Information forwarded
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bug-libtool <at> gnu.org
:
bug#17750
; Package
libtool
.
(Fri, 03 May 2019 13:56:01 GMT)
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Message #8 received at 17750 <at> debbugs.gnu.org (full text, mbox):
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 <at> vinc17.net> - Web: <https://www.vinc17.net/>
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Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
Reply sent
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Ileana Dumitrescu <ileanadumitrescu95 <at> gmail.com>
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You have taken responsibility.
(Fri, 31 May 2024 13:45:02 GMT)
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Julian Taylor <jtaylor.debian <at> googlemail.com>
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bug acknowledged by developer.
(Fri, 31 May 2024 13:45:02 GMT)
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Message #13 received at 17750-done <at> debbugs.gnu.org (full text, mbox):
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Thank you for both for the bug report and patch. It has been applied to
the development branch in libtool.
--
Ileana Dumitrescu
GPG Public Key: FA26 CA78 4BE1 8892 7F22 B99F 6570 EA01 146F 7354
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(Sat, 29 Jun 2024 11:24:14 GMT)
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This bug report was last modified 314 days ago.
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