Performing C SOURCE FILE Test CMAKE_HAVE_LIBC_PTHREAD failed with the following output:
Change Dir: /home/user/caffe/build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/local/bin/gmake -f Makefile cmTC_684f7/fast && /usr/local/bin/gmake  -f CMakeFiles/cmTC_684f7.dir/build.make CMakeFiles/cmTC_684f7.dir/build
gmake[1]: Entering directory '/usr/home/user/caffe/build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_684f7.dir/src.c.o
/usr/bin/cc -DCMAKE_HAVE_LIBC_PTHREAD   -MD -MT CMakeFiles/cmTC_684f7.dir/src.c.o -MF CMakeFiles/cmTC_684f7.dir/src.c.o.d -o CMakeFiles/cmTC_684f7.dir/src.c.o -c /home/user/caffe/build/CMakeFiles/CMakeTmp/src.c
Linking C executable cmTC_684f7
/usr/local/bin/cmake -E cmake_link_script CMakeFiles/cmTC_684f7.dir/link.txt --verbose=1
/usr/bin/cc CMakeFiles/cmTC_684f7.dir/src.c.o -o cmTC_684f7
ld: error: undefined symbol: pthread_create
>>> referenced by src.c
>>>               CMakeFiles/cmTC_684f7.dir/src.c.o:(main)
cc: error: linker command failed with exit code 1 (use -v to see invocation)
gmake[1]: *** [CMakeFiles/cmTC_684f7.dir/build.make:100: cmTC_684f7] Error 1
gmake[1]: Leaving directory '/usr/home/user/caffe/build/CMakeFiles/CMakeTmp'
gmake: *** [Makefile:127: cmTC_684f7/fast] Error 2


Source file was:
#include <pthread.h>

static void* test_func(void* data)
{
  return data;
}

int main(void)
{
  pthread_t thread;
  pthread_create(&thread, NULL, test_func, NULL);
  pthread_detach(thread);
  pthread_cancel(thread);
  pthread_join(thread, NULL);
  pthread_atfork(NULL, NULL, NULL);
  pthread_exit(NULL);

  return 0;
}

Determining if the function pthread_create exists in the pthreads failed with the following output:
Change Dir: /home/user/caffe/build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/local/bin/gmake -f Makefile cmTC_213ee/fast && /usr/local/bin/gmake  -f CMakeFiles/cmTC_213ee.dir/build.make CMakeFiles/cmTC_213ee.dir/build
gmake[1]: Entering directory '/usr/home/user/caffe/build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_213ee.dir/CheckFunctionExists.c.o
/usr/bin/cc   -DCHECK_FUNCTION_EXISTS=pthread_create -MD -MT CMakeFiles/cmTC_213ee.dir/CheckFunctionExists.c.o -MF CMakeFiles/cmTC_213ee.dir/CheckFunctionExists.c.o.d -o CMakeFiles/cmTC_213ee.dir/CheckFunctionExists.c.o -c /usr/local/share/cmake/Modules/CheckFunctionExists.c
Linking C executable cmTC_213ee
/usr/local/bin/cmake -E cmake_link_script CMakeFiles/cmTC_213ee.dir/link.txt --verbose=1
/usr/bin/cc  -DCHECK_FUNCTION_EXISTS=pthread_create CMakeFiles/cmTC_213ee.dir/CheckFunctionExists.c.o -o cmTC_213ee  -lpthreads
ld: error: unable to find library -lpthreads
cc: error: linker command failed with exit code 1 (use -v to see invocation)
gmake[1]: *** [CMakeFiles/cmTC_213ee.dir/build.make:100: cmTC_213ee] Error 1
gmake[1]: Leaving directory '/usr/home/user/caffe/build/CMakeFiles/CMakeTmp'
gmake: *** [Makefile:127: cmTC_213ee/fast] Error 2