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

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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 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?

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