| 12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455 | Determining if the pthread_create exist failed with the following output:Change Dir: /tmp/tmp.DyQoLadrQF/cmake-build-debug/CMakeFiles/CMakeTmpRun Build Command:"/usr/bin/make" "cmTC_3f464/fast"/usr/bin/make -f CMakeFiles/cmTC_3f464.dir/build.make CMakeFiles/cmTC_3f464.dir/buildmake[1]: Entering directory '/tmp/tmp.DyQoLadrQF/cmake-build-debug/CMakeFiles/CMakeTmp'Building C object CMakeFiles/cmTC_3f464.dir/CheckSymbolExists.c.o/usr/bin/cc    -o CMakeFiles/cmTC_3f464.dir/CheckSymbolExists.c.o   -c /tmp/tmp.DyQoLadrQF/cmake-build-debug/CMakeFiles/CMakeTmp/CheckSymbolExists.cLinking C executable cmTC_3f464/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_3f464.dir/link.txt --verbose=1/usr/bin/cc      CMakeFiles/cmTC_3f464.dir/CheckSymbolExists.c.o  -o cmTC_3f464 /usr/bin/ld: CMakeFiles/cmTC_3f464.dir/CheckSymbolExists.c.o: in function `main':CheckSymbolExists.c:(.text+0x1b): undefined reference to `pthread_create'collect2: error: ld returned 1 exit statusCMakeFiles/cmTC_3f464.dir/build.make:86: recipe for target 'cmTC_3f464' failedmake[1]: *** [cmTC_3f464] Error 1make[1]: Leaving directory '/tmp/tmp.DyQoLadrQF/cmake-build-debug/CMakeFiles/CMakeTmp'Makefile:121: recipe for target 'cmTC_3f464/fast' failedmake: *** [cmTC_3f464/fast] Error 2File /tmp/tmp.DyQoLadrQF/cmake-build-debug/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: /tmp/tmp.DyQoLadrQF/cmake-build-debug/CMakeFiles/CMakeTmpRun Build Command:"/usr/bin/make" "cmTC_3ff0f/fast"/usr/bin/make -f CMakeFiles/cmTC_3ff0f.dir/build.make CMakeFiles/cmTC_3ff0f.dir/buildmake[1]: Entering directory '/tmp/tmp.DyQoLadrQF/cmake-build-debug/CMakeFiles/CMakeTmp'Building C object CMakeFiles/cmTC_3ff0f.dir/CheckFunctionExists.c.o/usr/bin/cc   -DCHECK_FUNCTION_EXISTS=pthread_create   -o CMakeFiles/cmTC_3ff0f.dir/CheckFunctionExists.c.o   -c /usr/share/cmake-3.13/Modules/CheckFunctionExists.cLinking C executable cmTC_3ff0f/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_3ff0f.dir/link.txt --verbose=1/usr/bin/cc  -DCHECK_FUNCTION_EXISTS=pthread_create    CMakeFiles/cmTC_3ff0f.dir/CheckFunctionExists.c.o  -o cmTC_3ff0f -lpthreads /usr/bin/ld: cannot find -lpthreadscollect2: error: ld returned 1 exit statusCMakeFiles/cmTC_3ff0f.dir/build.make:86: recipe for target 'cmTC_3ff0f' failedmake[1]: *** [cmTC_3ff0f] Error 1make[1]: Leaving directory '/tmp/tmp.DyQoLadrQF/cmake-build-debug/CMakeFiles/CMakeTmp'Makefile:121: recipe for target 'cmTC_3ff0f/fast' failedmake: *** [cmTC_3ff0f/fast] Error 2
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