georgmartius
commented
8 years ago Hi,
Am 21. Februar 2016 14:06:44 MEZ, schrieb Heinz Wiesinger notifications@github.com:
I'm facing linking issues when trying to compile ffmpeg against an openmp enabled vid.stab (git master 97c6ae2). My system is Slackware-current, glibc 2.22, gcc 5.3.0.
This is the source file that ffmpeg's configure check uses to test vid.stab availability:
#include <vid.stab/libvidstab.h> long check_vsMotionDetectInit(void) { return (long) vsMotionDetectInit; } int main(void) { return 0; }This is the command ffmpeg's configure uses to compile the test code:
gcc -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -std=c99 -fomit-frame-pointer -pthread -c -o test.o test.cAnd this is the command it uses to link the test code:
gcc -Wl,--as-needed -Wl,-z,noexecstack -o test test.o -lvidstab -lm -lgomp -lm -llzma -lbz2 -lz -pthread
The error looks more like the math lib. Try to use -lm before lvidstab.
I can't check it right now.
Georg
And finally, these are the errors I'm getting:
/usr/lib64/gcc/x86_64-slackware-linux/5.3.0/../../../../lib64/libvidstab.so: undefined reference to `_ZGVeN16vv_powf' /usr/lib64/gcc/x86_64-slackware-linux/5.3.0/../../../../lib64/libvidstab.so: undefined reference to `_ZGVcN4v_log' /usr/lib64/gcc/x86_64-slackware-linux/5.3.0/../../../../lib64/libvidstab.so: undefined reference to `_ZGVdN8v_expf' /usr/lib64/gcc/x86_64-slackware-linux/5.3.0/../../../../lib64/libvidstab.so: undefined reference to `_ZGVbN2v_exp' /usr/lib64/gcc/x86_64-slackware-linux/5.3.0/../../../../lib64/libvidstab.so: undefined reference to `_ZGVeN16v_logf' /usr/lib64/gcc/x86_64-slackware-linux/5.3.0/../../../../lib64/libvidstab.so: undefined reference to `_ZGVdN8vv_powf' /usr/lib64/gcc/x86_64-slackware-linux/5.3.0/../../../../lib64/libvidstab.so: undefined reference to `_ZGVcN4vv_pow' /usr/lib64/gcc/x86_64-slackware-linux/5.3.0/../../../../lib64/libvidstab.so: undefined reference to `_ZGVeN8vv_pow' /usr/lib64/gcc/x86_64-slackware-linux/5.3.0/../../../../lib64/libvidstab.so: undefined reference to `_ZGVdN4vv_pow' /usr/lib64/gcc/x86_64-slackware-linux/5.3.0/../../../../lib64/libvidstab.so: undefined reference to `_ZGVcN4v_exp' /usr/lib64/gcc/x86_64-slackware-linux/5.3.0/../../../../lib64/libvidstab.so: undefined reference to `_ZGVcN8v_logf' /usr/lib64/gcc/x86_64-slackware-linux/5.3.0/../../../../lib64/libvidstab.so: undefined reference to `_ZGVbN4vv_powf' /usr/lib64/gcc/x86_64-slackware-linux/5.3.0/../../../../lib64/libvidstab.so: undefined reference to `_ZGVcN8v_expf' /usr/lib64/gcc/x86_64-slackware-linux/5.3.0/../../../../lib64/libvidstab.so: undefined reference to `_ZGVdN4v_log' /usr/lib64/gcc/x86_64-slackware-linux/5.3.0/../../../../lib64/libvidstab.so: undefined reference to `_ZGVeN8v_log' /usr/lib64/gcc/x86_64-slackware-linux/5.3.0/../../../../lib64/libvidstab.so: undefined reference to `_ZGVcN8vv_powf' /usr/lib64/gcc/x86_64-slackware-linux/5.3.0/../../../../lib64/libvidstab.so: undefined reference to `_ZGVbN2v_log' /usr/lib64/gcc/x86_64-slackware-linux/5.3.0/../../../../lib64/libvidstab.so: undefined reference to `_ZGVbN4v_expf' /usr/lib64/gcc/x86_64-slackware-linux/5.3.0/../../../../lib64/libvidstab.so: undefined reference to `_ZGVbN4v_logf' /usr/lib64/gcc/x86_64-slackware-linux/5.3.0/../../../../lib64/libvidstab.so: undefined reference to `_ZGVeN16v_expf' /usr/lib64/gcc/x86_64-slackware-linux/5.3.0/../../../../lib64/libvidstab.so: undefined reference to `_ZGVdN8v_logf' /usr/lib64/gcc/x86_64-slackware-linux/5.3.0/../../../../lib64/libvidstab.so: undefined reference to `_ZGVeN8v_exp' /usr/lib64/gcc/x86_64-slackware-linux/5.3.0/../../../../lib64/libvidstab.so: undefined reference to `_ZGVbN2vv_pow' /usr/lib64/gcc/x86_64-slackware-linux/5.3.0/../../../../lib64/libvidstab.so: undefined reference to `_ZGVdN4v_exp' collect2: error: ld returned 1 exit statusIf I compile with -DUSE_OMP=0 everything links fine, so it's definitely something openmp related, but I can't figure out what exactly :-/
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pprkut
Nezteb
I'm facing linking issues when trying to compile ffmpeg against an openmp enabled vid.stab (git master 97c6ae2). My system is Slackware-current, glibc 2.22, gcc 5.3.0.
This is the source file that ffmpeg's configure check uses to test vid.stab availability:
This is the command ffmpeg's configure uses to compile the test code:
And this is the command it uses to link the test code:
And finally, these are the errors I'm getting:
If I compile with -DUSE_OMP=0 everything links fine, so it's definitely something openmp related, but I can't figure out what exactly :-/