compile using cmake failed! (undefined reference to `pthread_create')

[liwei46]

Hi,
I am trying to use cmake to build the project, but I get the following error message when trying to generate the MAkefile. Anyone can help? Thanks a lot!

Determining if the pthread_create exist failed with the following output:
Change Dir: /home/ov/projects/caffe/PSPNet/build/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_73049/fast"
/usr/bin/make -f CMakeFiles/cmTC_73049.dir/build.make CMakeFiles/cmTC_73049.dir/build
make[1]: Entering directory '/home/ov/projects/caffe/PSPNet/.build_release/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_73049.dir/CheckSymbolExists.c.o
/usr/bin/cc -o CMakeFiles/cmTC_73049.dir/CheckSymbolExists.c.o -c /home/ov/projects/caffe/PSPNet/build/CMakeFiles/CMakeTmp/C$
Linking C executable cmTC_73049
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_73049.dir/link.txt --verbose=1
/usr/bin/cc -rdynamic CMakeFiles/cmTC_73049.dir/CheckSymbolExists.c.o -o cmTC_73049
CMakeFiles/cmTC_73049.dir/CheckSymbolExists.c.o: In function main': CheckSymbolExists.c:(.text+0x1b): undefined reference to pthread_create'
collect2: error: ld returned 1 exit status
CMakeFiles/cmTC_73049.dir/build.make:97: recipe for target 'cmTC_73049' failed
make[1]: *** [cmTC_73049] Error 1
make[1]: Leaving directory '/home/ov/projects/caffe/PSPNet/.build_release/CMakeFiles/CMakeTmp'
Makefile:126: recipe for target 'cmTC_73049/fast' failed
make: *** [cmTC_73049/fast] Error 2

File /home/ov/projects/caffe/PSPNet/build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:
/* */
#include <pthread.h>

int main(int argc, char** argv)
{
(void)argv;
#ifndef pthread_create
return ((int*)(&pthread_create))[argc];
#else
(void)argc;
return 0;
#endif
}

Determining if the function pthread_create exists in the pthreads failed with the following output: