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* [Bug libgomp/56357] New: [4.8 Regression] missing symbol references for libgomp when using -flto -fopenmp on mingw32
@ 2013-02-16 19:10 daniel.f.starke at freenet dot de
2013-02-18 10:44 ` [Bug libgomp/56357] " rguenth at gcc dot gnu.org
` (8 more replies)
0 siblings, 9 replies; 10+ messages in thread
From: daniel.f.starke at freenet dot de @ 2013-02-16 19:10 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56357
Bug #: 56357
Summary: [4.8 Regression] missing symbol references for libgomp
when using -flto -fopenmp on mingw32
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libgomp
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: daniel.f.starke@freenet.de
CC: jakub@gcc.gnu.org
The combination of -flto and -fopenmp is broken for mingw32 in r196092.
#define ARRAY_SIZE 10
int main() {
int i;
volatile int a[ARRAY_SIZE];
#pragma omp parallel for private(a)
for (i = 0; i < ARRAY_SIZE; i++) {
a[i] += i;
}
return 0;
}
This code works fine with "gcc -fopenmp gcc-lto-gomp.c" but results in errors
for "gcc -fopenmp -flto gcc-lto-gomp.c". Adding -lgomp does not solves this.
Error output:
C:\Users\Me\AppData\Local\Temp\cccobKR8.ltrans0.ltrans.o:cccobKR8.ltrans0.o:(.text+0x6):
undefined reference to `omp_get_num_threads'
C:\Users\Me\AppData\Local\Temp\cccobKR8.ltrans0.ltrans.o:cccobKR8.ltrans0.o:(.text+0xd):
undefined reference to `omp_get_thread_num'
C:\Users\Me\AppData\Local\Temp\cccobKR8.ltrans0.ltrans.o:cccobKR8.ltrans0.o:(.text.startup+0x26):
undefined reference to `GOMP_parallel_start'
C:\Users\Me\AppData\Local\Temp\cccobKR8.ltrans0.ltrans.o:cccobKR8.ltrans0.o:(.text.startup+0x37):
undefined reference to `GOMP_parallel_end'
could not unlink output filecollect2.exe: error: ld returned 1 exit status
This all works fine in gcc 4.7.2 with the same build configuration.
Using built-in specs.
COLLECT_GCC=D:\Programme\msys\gcc\bin\gcc.exe
COLLECT_LTO_WRAPPER=d:/programme/msys/gcc/bin/../libexec/gcc/mingw32/4.8.0/lto-wrapper.exe
Target: mingw32
Configured with: ../gcc-4.8.0-r196092/configure
--enable-languages=c,ada,c++,fortran,objc,obj-c++ --disable-sjlj-exceptions
--disable-nls --disable-shared --enable-static --enable-fully-dynamic-string
--enable-libgomp --enable-lto --with-dwarf2 --disable-win32-registry
--enable-version-specific-runtime-libs --enable-bootstrap --build=mingw32
--enable-abi=32 --enable-checking=release --prefix=/mingw
Thread model: win32
gcc version 4.8.0 20130215 (experimental) (GCC)
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug libgomp/56357] [4.8 Regression] missing symbol references for libgomp when using -flto -fopenmp on mingw32
2013-02-16 19:10 [Bug libgomp/56357] New: [4.8 Regression] missing symbol references for libgomp when using -flto -fopenmp on mingw32 daniel.f.starke at freenet dot de
@ 2013-02-18 10:44 ` rguenth at gcc dot gnu.org
2013-02-18 14:25 ` jakub at gcc dot gnu.org
` (7 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: rguenth at gcc dot gnu.org @ 2013-02-18 10:44 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56357
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |4.8.0
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug libgomp/56357] [4.8 Regression] missing symbol references for libgomp when using -flto -fopenmp on mingw32
2013-02-16 19:10 [Bug libgomp/56357] New: [4.8 Regression] missing symbol references for libgomp when using -flto -fopenmp on mingw32 daniel.f.starke at freenet dot de
2013-02-18 10:44 ` [Bug libgomp/56357] " rguenth at gcc dot gnu.org
@ 2013-02-18 14:25 ` jakub at gcc dot gnu.org
2013-02-20 14:49 ` rguenth at gcc dot gnu.org
` (6 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: jakub at gcc dot gnu.org @ 2013-02-18 14:25 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56357
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-02-18 14:24:50 UTC ---
Works just fine on x86_64-linux.
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug libgomp/56357] [4.8 Regression] missing symbol references for libgomp when using -flto -fopenmp on mingw32
2013-02-16 19:10 [Bug libgomp/56357] New: [4.8 Regression] missing symbol references for libgomp when using -flto -fopenmp on mingw32 daniel.f.starke at freenet dot de
2013-02-18 10:44 ` [Bug libgomp/56357] " rguenth at gcc dot gnu.org
2013-02-18 14:25 ` jakub at gcc dot gnu.org
@ 2013-02-20 14:49 ` rguenth at gcc dot gnu.org
2013-02-26 8:02 ` daniel.f.starke at freenet dot de
` (5 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: rguenth at gcc dot gnu.org @ 2013-02-20 14:49 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56357
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2013-02-20
Ever Confirmed|0 |1
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> 2013-02-20 14:48:42 UTC ---
Can you bisect it?
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug libgomp/56357] [4.8 Regression] missing symbol references for libgomp when using -flto -fopenmp on mingw32
2013-02-16 19:10 [Bug libgomp/56357] New: [4.8 Regression] missing symbol references for libgomp when using -flto -fopenmp on mingw32 daniel.f.starke at freenet dot de
` (2 preceding siblings ...)
2013-02-20 14:49 ` rguenth at gcc dot gnu.org
@ 2013-02-26 8:02 ` daniel.f.starke at freenet dot de
2013-03-08 20:05 ` daniel.f.starke at freenet dot de
` (4 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: daniel.f.starke at freenet dot de @ 2013-02-26 8:02 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56357
--- Comment #3 from Daniel Starke <daniel.f.starke at freenet dot de> 2013-02-26 08:02:13 UTC ---
I have currently no means to do so but I will try that as soon as possible.
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug libgomp/56357] [4.8 Regression] missing symbol references for libgomp when using -flto -fopenmp on mingw32
2013-02-16 19:10 [Bug libgomp/56357] New: [4.8 Regression] missing symbol references for libgomp when using -flto -fopenmp on mingw32 daniel.f.starke at freenet dot de
` (3 preceding siblings ...)
2013-02-26 8:02 ` daniel.f.starke at freenet dot de
@ 2013-03-08 20:05 ` daniel.f.starke at freenet dot de
2013-03-22 14:45 ` [Bug libgomp/56357] [4.8/4.9 " jakub at gcc dot gnu.org
` (3 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: daniel.f.starke at freenet dot de @ 2013-03-08 20:05 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56357
--- Comment #4 from Daniel Starke <daniel.f.starke at freenet dot de> 2013-03-08 20:05:19 UTC ---
I tried the same configuration in a different mingw build environment for gcc.
The resulting gcc build worked fine and did not show the described issue.
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug libgomp/56357] [4.8/4.9 Regression] missing symbol references for libgomp when using -flto -fopenmp on mingw32
2013-02-16 19:10 [Bug libgomp/56357] New: [4.8 Regression] missing symbol references for libgomp when using -flto -fopenmp on mingw32 daniel.f.starke at freenet dot de
` (4 preceding siblings ...)
2013-03-08 20:05 ` daniel.f.starke at freenet dot de
@ 2013-03-22 14:45 ` jakub at gcc dot gnu.org
2013-05-31 10:59 ` jakub at gcc dot gnu.org
` (2 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: jakub at gcc dot gnu.org @ 2013-03-22 14:45 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56357
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.8.0 |4.8.1
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-03-22 14:44:15 UTC ---
GCC 4.8.0 is being released, adjusting target milestone.
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug libgomp/56357] [4.8/4.9 Regression] missing symbol references for libgomp when using -flto -fopenmp on mingw32
2013-02-16 19:10 [Bug libgomp/56357] New: [4.8 Regression] missing symbol references for libgomp when using -flto -fopenmp on mingw32 daniel.f.starke at freenet dot de
` (5 preceding siblings ...)
2013-03-22 14:45 ` [Bug libgomp/56357] [4.8/4.9 " jakub at gcc dot gnu.org
@ 2013-05-31 10:59 ` jakub at gcc dot gnu.org
2013-10-16 9:49 ` jakub at gcc dot gnu.org
2013-10-25 12:24 ` rguenth at gcc dot gnu.org
8 siblings, 0 replies; 10+ messages in thread
From: jakub at gcc dot gnu.org @ 2013-05-31 10:59 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56357
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.8.1 |4.8.2
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 4.8.1 has been released.
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug libgomp/56357] [4.8/4.9 Regression] missing symbol references for libgomp when using -flto -fopenmp on mingw32
2013-02-16 19:10 [Bug libgomp/56357] New: [4.8 Regression] missing symbol references for libgomp when using -flto -fopenmp on mingw32 daniel.f.starke at freenet dot de
` (6 preceding siblings ...)
2013-05-31 10:59 ` jakub at gcc dot gnu.org
@ 2013-10-16 9:49 ` jakub at gcc dot gnu.org
2013-10-25 12:24 ` rguenth at gcc dot gnu.org
8 siblings, 0 replies; 10+ messages in thread
From: jakub at gcc dot gnu.org @ 2013-10-16 9:49 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56357
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.8.2 |4.8.3
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 4.8.2 has been released.
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug libgomp/56357] [4.8/4.9 Regression] missing symbol references for libgomp when using -flto -fopenmp on mingw32
2013-02-16 19:10 [Bug libgomp/56357] New: [4.8 Regression] missing symbol references for libgomp when using -flto -fopenmp on mingw32 daniel.f.starke at freenet dot de
` (7 preceding siblings ...)
2013-10-16 9:49 ` jakub at gcc dot gnu.org
@ 2013-10-25 12:24 ` rguenth at gcc dot gnu.org
8 siblings, 0 replies; 10+ messages in thread
From: rguenth at gcc dot gnu.org @ 2013-10-25 12:24 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56357
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |WORKSFORME
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Closing as worksforyou.
^ permalink raw reply [flat|nested] 10+ messages in thread
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2013-02-16 19:10 [Bug libgomp/56357] New: [4.8 Regression] missing symbol references for libgomp when using -flto -fopenmp on mingw32 daniel.f.starke at freenet dot de
2013-02-18 10:44 ` [Bug libgomp/56357] " rguenth at gcc dot gnu.org
2013-02-18 14:25 ` jakub at gcc dot gnu.org
2013-02-20 14:49 ` rguenth at gcc dot gnu.org
2013-02-26 8:02 ` daniel.f.starke at freenet dot de
2013-03-08 20:05 ` daniel.f.starke at freenet dot de
2013-03-22 14:45 ` [Bug libgomp/56357] [4.8/4.9 " jakub at gcc dot gnu.org
2013-05-31 10:59 ` jakub at gcc dot gnu.org
2013-10-16 9:49 ` jakub at gcc dot gnu.org
2013-10-25 12:24 ` rguenth at gcc dot gnu.org
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