parallel_for_pthreads undefined reference (Bug #4386)

Added by j c almost 10 years ago. Updated over 9 years ago.

Status:	Done	Start date:	2015-06-05
Priority:	Normal	Due date:
Assignee:	Maksim Shabunin	% Done:	0%
Category:	build/install
Target version:	3.1
Affected version:	branch 'master' (3.0-dev)	Operating System:	Linux
Difficulty:		HW Platform:	x86
Pull request:	https://github.com/Itseez/opencv/pull/4106

Description

when compile opencv-3.0.0 on slackware 12.2 after update of gtk+2 glib2 cmake etc

History

#1
Updated by Maksim Shabunin almost 10 years ago

I couldn't reproduce this issue. Can you, please, provide additional information about your configuration (cmake output)?

Status changed from New to Done
Assignee set to Maksim Shabunin
Category set to build/install
Target version set to 3.1

#2
Updated by Maksim Shabunin almost 10 years ago

Status changed from Done to Incomplete

#3
Updated by be rak almost 10 years ago

unfortunately, i can reproduce it on a heroku box with gcc4.4.3

[ 64%] Built target opencv_adas Linking CXX executable ../../../../bin/opencv_fcw_train ../../../../lib/libopencv_core.a(parallel.cpp.o): In function `cv::setNumThreads (int)': parallel.cpp:(.text._ZN2cv13setNumThreadsEi+0x7): undefined reference to `parall el_pthreads_set_threads_num(int)' ../../../../lib/libopencv_core.a(parallel.cpp.o): In function `cv::getNumThreads ()': parallel.cpp:(.text._ZN2cv13getNumThreadsEv+0x14): undefined reference to `paral lel_pthreads_get_threads_num()' ../../../../lib/libopencv_core.a(parallel.cpp.o): In function `cv::parallel_for_ (cv::Range const&, cv::ParallelLoopBody const&, double)': parallel.cpp:(.text._ZN2cv13parallel_for_ERKNS_5RangeERKNS_16ParallelLoopBodyEd+ 0x31): undefined reference to `parallel_for_pthreads(cv::Range const&, cv::Paral lelLoopBody const&, double)' collect2: ld returned 1 exit status

full konsole log [here](https://gist.github.com/berak/f369932f86d86861ba2e#file-gistfile1-txt-L1908)

in the end, i had to disable the adas module, setting -DWITH_PARALLEL_PF=OFF from cmake does not have any effect (it is never looked at)

#4
Updated by Maksim Shabunin almost 10 years ago

Thank you! I was able to reproduce it with gcc-4.4.3 too.

Status changed from Incomplete to Open
Pull request set to https://github.com/Itseez/opencv/pull/4106

#5
Updated by be rak over 9 years ago

it would be nice, if -DWITH_PARALLEL_PF=OFF actually had some efect.

#6
Updated by j c over 9 years ago

well,these 3 functions have been called in parallel.cpp,
and defined right before being called. move these definitions to
class def, it is ok now seemingly.

#7
Updated by be rak over 9 years ago

tried a new build (without adas), i now get runtime errors:

ocv3/lib/libopencv_core.a(parallel.cpp.o): In function `cv::setNumThreads(int)': parallel.cpp:(.text._ZN2cv13setNumThreadsEi+0x7): undefined reference to `parallel_pthreads_set_threads_num(int)' ocv3/lib/libopencv_core.a(parallel.cpp.o): In function `cv::getNumThreads()': parallel.cpp:(.text._ZN2cv13getNumThreadsEv+0x14): undefined reference to `parallel_pthreads_get_threads_num()' ocv3/lib/libopencv_core.a(parallel.cpp.o): In function `cv::parallel_for_(cv::Range const&, cv::ParallelLoopBody const&, double)': parallel.cpp:(.text._ZN2cv13parallel_for_ERKNS_5RangeERKNS_16ParallelLoopBodyEd+0x31): undefined reference to `parallel_for_pthreads(cv::Range const&, cv::ParallelLoopBody const&, double)' collect2: ld returned 1 exit status

cmake output: https://gist.github.com/berak/e5c5887e6b5c554aedb7