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x86_64-unknown-linux-gnu/bin/ld: cannot find -lpthreads

I'm installing opencv 3.3 with centOS 6.9, gcc 4.8.5, cmake 3.11.1 ,cuda 9.0 and cudnn 7.0. I have been stuck on this question for quite a while. cmake error output as below.

CMakeFiles/cmTC_09750.dir/CheckSymbolExists.c.o: In function main': **CheckSymbolExists.c:(.text.startup+0x3): undefined reference topthread_create'* collect2: error: ld returned 1 exit status gmake[1]: [cmTC_09750] Error 1 gmake[1]: Leaving directory `/home/cch/Downloads/opencv/build/CMakeFiles/CMakeTmp' gmake: * [cmTC_09750/fast] Error 2

File /home/cch/Downloads/opencv/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: Change Dir: /home/cch/Downloads/opencv/build/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/gmake" "cmTC_c092d/fast" /usr/bin/gmake -f CMakeFiles/cmTC_c092d.dir/build.make CMakeFiles/cmTC_c092d.dir/build gmake[1]: Entering directory /home/cch/Downloads/opencv/build/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_c092d.dir/CheckFunctionExists.c.o /usr/bin/cc -fPIC -DCHECK_FUNCTION_EXISTS=pthread_create -O3 -DNDEBUG -o CMakeFiles/cmTC_c092d.dir/CheckFunctionExists.c.o -c /usr/local/cmake-3.11.1/share/cmake-3.11/Modules/CheckFunctionExists.c Linking C executable cmTC_c092d /usr/local/cmake-3.11.1/bin/cmake -E cmake_link_script CMakeFiles/cmTC_c092d.dir/link.txt --verbose=1 /usr/bin/cc -fPIC -DCHECK_FUNCTION_EXISTS=pthread_create -O3 -DNDEBUG -rdynamic CMakeFiles/cmTC_c092d.dir/CheckFunctionExists.c.o -o cmTC_c092d -lpthreads **/usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.5/../../../../x86_64-unknown-linux-gnu/bin/ld: cannot find -lpthreads** collect2: error: ld returned 1 exit status gmake[1]: *** [cmTC_c092d] Error 1 gmake[1]: Leaving directory/home/cch/Downloads/opencv/build/CMakeFiles/CMakeTmp' gmake: * [cmTC_c092d/fast] Error 2

[root@IB1 include]# ldconfig -v | grep pthread ldconfig: /etc/ld.so.conf.d/kernel-2.6.32-696.el6.x86_64.conf:6: duplicate hwcap 1 nosegneg ldconfig: Path `/lib64' given more than once ldconfig: Can't stat /libx32: No such file or directory ldconfig: Can't stat /usr/libx32: No such file or directory libpthread.so.0 -> libpthread-2.17.so libpthread.so.0 -> libpthread-2.12.so ldconfig: Cannot stat /usr/lib64/libGL.so: No such file or directory libgpgme-pthread.so.11 -> libgpgme-pthread.so.11.6.6 libpthread.so.0 -> libpthread-2.12.so

I wonder what I should do next?

click to hide/show revision 2
None

updated 2018-05-04 09:52:40 -0500

berak gravatar image

x86_64-unknown-linux-gnu/bin/ld: cannot find -lpthreads

I'm installing opencv 3.3 with centOS 6.9, gcc 4.8.5, cmake 3.11.1 ,cuda 9.0 and cudnn 7.0. I have been stuck on this question for quite a while. cmake error output as below.

CMakeFiles/cmTC_09750.dir/CheckSymbolExists.c.o: In function main':
`main':
**CheckSymbolExists.c:(.text.startup+0x3): undefined reference topthread_create'*
to `pthread_create'**
collect2: error: ld returned 1 exit status
gmake[1]:  *** [cmTC_09750] Error 1
gmake[1]: Leaving directory `/home/cch/Downloads/opencv/build/CMakeFiles/CMakeTmp'
gmake: * *** [cmTC_09750/fast] Error 2

2 File /home/cch/Downloads/opencv/build/CMakeFiles/CMakeTmp/CheckSymbolExists.c: /* */

include <pthread.h>

*/ #include <pthread.h> int main(int argc, char** argv) { (void)argv;

ifndef pthread_create

(void)argv; #ifndef pthread_create return ((int*)(&pthread_create))[argc];

else

((int*)(&pthread_create))[argc]; #else (void)argc; return 0;

endif

}

0; #endif } Determining if the function pthread_create exists in the pthreads failed with the following output: Change Dir: /home/cch/Downloads/opencv/build/CMakeFiles/CMakeTmp

/home/cch/Downloads/opencv/build/CMakeFiles/CMakeTmp Run Build Command:"/usr/bin/gmake" "cmTC_c092d/fast" /usr/bin/gmake -f CMakeFiles/cmTC_c092d.dir/build.make CMakeFiles/cmTC_c092d.dir/build gmake[1]: Entering directory /home/cch/Downloads/opencv/build/CMakeFiles/CMakeTmp' `/home/cch/Downloads/opencv/build/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_c092d.dir/CheckFunctionExists.c.o /usr/bin/cc -fPIC -DCHECK_FUNCTION_EXISTS=pthread_create -O3 -DNDEBUG -o CMakeFiles/cmTC_c092d.dir/CheckFunctionExists.c.o -c /usr/local/cmake-3.11.1/share/cmake-3.11/Modules/CheckFunctionExists.c Linking C executable cmTC_c092d /usr/local/cmake-3.11.1/bin/cmake -E cmake_link_script CMakeFiles/cmTC_c092d.dir/link.txt --verbose=1 /usr/bin/cc -fPIC -DCHECK_FUNCTION_EXISTS=pthread_create -O3 -DNDEBUG -rdynamic CMakeFiles/cmTC_c092d.dir/CheckFunctionExists.c.o -o cmTC_c092d -lpthreads **/usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.5/../../../../x86_64-unknown-linux-gnu/bin/ld: cannot find -lpthreads** collect2: error: ld returned 1 exit status gmake[1]: *** [cmTC_c092d] Error 1 gmake[1]: Leaving directory/home/cch/Downloads/opencv/build/CMakeFiles/CMakeTmp' directory `/home/cch/Downloads/opencv/build/CMakeFiles/CMakeTmp' gmake: * *** [cmTC_c092d/fast] Error 2

2 > [root@IB1 include]# ldconfig -v | grep > pthread ldconfig: > /etc/ld.so.conf.d/kernel-2.6.32-696.el6.x86_64.conf:6: > duplicate hwcap 1 nosegneg ldconfig: > Path `/lib64' given more than once > ldconfig: Can't stat /libx32: No such > file or directory ldconfig: Can't stat > /usr/libx32: No such file or directory > libpthread.so.0 -> libpthread-2.17.so > libpthread.so.0 -> libpthread-2.12.so > ldconfig: Cannot stat > /usr/lib64/libGL.so: No such file or > directory libgpgme-pthread.so.11 -> > libgpgme-pthread.so.11.6.6 > libpthread.so.0 -> libpthread-2.12.so

libpthread-2.12.so

I wonder what I should do next?

x86_64-unknown-linux-gnu/bin/ld: cannot find -lpthreads

I'm installing opencv 3.3 with centOS 6.9, gcc 4.8.5, cmake 3.11.1 ,cuda 9.0 and cudnn 7.0. I have been stuck on this question for quite a while. cmake error output as below.

CMakeFiles/cmTC_09750.dir/CheckSymbolExists.c.o: In function `main':
**CheckSymbolExists.c:(.text.startup+0x3): undefined reference to `pthread_create'**
collect2: error: ld returned 1 exit status
gmake[1]: *** [cmTC_09750] Error 1
gmake[1]: Leaving directory `/home/cch/Downloads/opencv/build/CMakeFiles/CMakeTmp'
gmake: *** [cmTC_09750/fast] Error 2

File /home/cch/Downloads/opencv/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:
Change Dir: /home/cch/Downloads/opencv/build/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/gmake" "cmTC_c092d/fast"
/usr/bin/gmake -f CMakeFiles/cmTC_c092d.dir/build.make CMakeFiles/cmTC_c092d.dir/build
gmake[1]: Entering directory `/home/cch/Downloads/opencv/build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_c092d.dir/CheckFunctionExists.c.o
/usr/bin/cc   -fPIC -DCHECK_FUNCTION_EXISTS=pthread_create -O3 -DNDEBUG   -o CMakeFiles/cmTC_c092d.dir/CheckFunctionExists.c.o   -c /usr/local/cmake-3.11.1/share/cmake-3.11/Modules/CheckFunctionExists.c
Linking C executable cmTC_c092d
/usr/local/cmake-3.11.1/bin/cmake -E cmake_link_script CMakeFiles/cmTC_c092d.dir/link.txt --verbose=1
/usr/bin/cc -fPIC -DCHECK_FUNCTION_EXISTS=pthread_create -O3 -DNDEBUG     -rdynamic CMakeFiles/cmTC_c092d.dir/CheckFunctionExists.c.o  -o cmTC_c092d -lpthreads
**/usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.5/../../../../x86_64-unknown-linux-gnu/bin/ld: cannot find -lpthreads**
collect2: error: ld returned 1 exit status
gmake[1]: *** [cmTC_c092d] Error 1
gmake[1]: Leaving directory `/home/cch/Downloads/opencv/build/CMakeFiles/CMakeTmp'
gmake: *** [cmTC_c092d/fast] Error 2

> [root@IB1 include]# ldconfig -v | grep
> pthread ldconfig:
> /etc/ld.so.conf.d/kernel-2.6.32-696.el6.x86_64.conf:6:
> duplicate hwcap 1 nosegneg ldconfig:
> Path `/lib64' given more than once
> ldconfig: Can't stat /libx32: No such
> file or directory ldconfig: Can't stat
> /usr/libx32: No such file or directory
>   libpthread.so.0 -> libpthread-2.17.so
>   libpthread.so.0 -> libpthread-2.12.so
> ldconfig: Cannot stat
> /usr/lib64/libGL.so: No such file or
> directory     libgpgme-pthread.so.11 ->
> libgpgme-pthread.so.11.6.6
>   libpthread.so.0 -> libpthread-2.12.so

I wonder what I should do next?