Determining if the pthread_setname_np exist failed with the following output: Change Dir: /home/naourr/work/instance-2/output-1/build/host-grpc-v1.16.1/CMakeFiles/CMakeTmp Run Build Command(s):/usr/bin/gmake cmTC_fd240/fast && gmake[1]: Entering directory '/home/naourr/work/instance-2/output-1/build/host-grpc-v1.16.1/CMakeFiles/CMakeTmp' /usr/bin/gmake -f CMakeFiles/cmTC_fd240.dir/build.make CMakeFiles/cmTC_fd240.dir/build gmake[2]: Entering directory '/home/naourr/work/instance-2/output-1/build/host-grpc-v1.16.1/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_fd240.dir/CheckSymbolExists.c.o /usr/bin/gcc -O2 -I/home/naourr/work/instance-2/output-1/host/include -fPIE -o CMakeFiles/cmTC_fd240.dir/CheckSymbolExists.c.o -c /home/naourr/work/instance-2/output-1/build/host-grpc-v1.16.1/CMakeFiles/CMakeTmp/CheckSymbolExists.c /home/naourr/work/instance-2/output-1/build/host-grpc-v1.16.1/CMakeFiles/CMakeTmp/CheckSymbolExists.c: In function 'main': /home/naourr/work/instance-2/output-1/build/host-grpc-v1.16.1/CMakeFiles/CMakeTmp/CheckSymbolExists.c:8:19: error: 'pthread_setname_np' undeclared (first use in this function); did you mean 'pthread_setcanceltype'? 8 | return ((int*)(&pthread_setname_np))[argc]; | ^~~~~~~~~~~~~~~~~~ | pthread_setcanceltype /home/naourr/work/instance-2/output-1/build/host-grpc-v1.16.1/CMakeFiles/CMakeTmp/CheckSymbolExists.c:8:19: note: each undeclared identifier is reported only once for each function it appears in gmake[2]: *** [CMakeFiles/cmTC_fd240.dir/build.make:66: CMakeFiles/cmTC_fd240.dir/CheckSymbolExists.c.o] Error 1 gmake[2]: Leaving directory '/home/naourr/work/instance-2/output-1/build/host-grpc-v1.16.1/CMakeFiles/CMakeTmp' gmake[1]: *** [Makefile:121: cmTC_fd240/fast] Error 2 gmake[1]: Leaving directory '/home/naourr/work/instance-2/output-1/build/host-grpc-v1.16.1/CMakeFiles/CMakeTmp' File /home/naourr/work/instance-2/output-1/build/host-grpc-v1.16.1/CMakeFiles/CMakeTmp/CheckSymbolExists.c: /* */ #include int main(int argc, char** argv) { (void)argv; #ifndef pthread_setname_np return ((int*)(&pthread_setname_np))[argc]; #else (void)argc; return 0; #endif } Performing C SOURCE FILE Test CMAKE_HAVE_LIBC_PTHREAD failed with the following output: Change Dir: /home/naourr/work/instance-2/output-1/build/host-grpc-v1.16.1/CMakeFiles/CMakeTmp Run Build Command(s):/usr/bin/gmake cmTC_e1ba2/fast && gmake[1]: Entering directory '/home/naourr/work/instance-2/output-1/build/host-grpc-v1.16.1/CMakeFiles/CMakeTmp' /usr/bin/gmake -f CMakeFiles/cmTC_e1ba2.dir/build.make CMakeFiles/cmTC_e1ba2.dir/build gmake[2]: Entering directory '/home/naourr/work/instance-2/output-1/build/host-grpc-v1.16.1/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_e1ba2.dir/src.c.o /usr/bin/gcc -O2 -I/home/naourr/work/instance-2/output-1/host/include -DCMAKE_HAVE_LIBC_PTHREAD -fPIE -o CMakeFiles/cmTC_e1ba2.dir/src.c.o -c /home/naourr/work/instance-2/output-1/build/host-grpc-v1.16.1/CMakeFiles/CMakeTmp/src.c Linking C executable cmTC_e1ba2 /usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_e1ba2.dir/link.txt --verbose=1 /usr/bin/gcc -O2 -I/home/naourr/work/instance-2/output-1/host/include -DCMAKE_HAVE_LIBC_PTHREAD -rdynamic CMakeFiles/cmTC_e1ba2.dir/src.c.o -o cmTC_e1ba2 /usr/bin/ld: CMakeFiles/cmTC_e1ba2.dir/src.c.o: in function `main': src.c:(.text.startup+0x15): undefined reference to `pthread_create' /usr/bin/ld: src.c:(.text.startup+0x1f): undefined reference to `pthread_detach' /usr/bin/ld: src.c:(.text.startup+0x2b): undefined reference to `pthread_join' collect2: error: ld returned 1 exit status gmake[2]: *** [CMakeFiles/cmTC_e1ba2.dir/build.make:87: cmTC_e1ba2] Error 1 gmake[2]: Leaving directory '/home/naourr/work/instance-2/output-1/build/host-grpc-v1.16.1/CMakeFiles/CMakeTmp' gmake[1]: *** [Makefile:121: cmTC_e1ba2/fast] Error 2 gmake[1]: Leaving directory '/home/naourr/work/instance-2/output-1/build/host-grpc-v1.16.1/CMakeFiles/CMakeTmp' Source file was: #include void* test_func(void* data) { return data; } int main(void) { pthread_t thread; pthread_create(&thread, NULL, test_func, NULL); pthread_detach(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/naourr/work/instance-2/output-1/build/host-grpc-v1.16.1/CMakeFiles/CMakeTmp Run Build Command(s):/usr/bin/gmake cmTC_2ff42/fast && gmake[1]: Entering directory '/home/naourr/work/instance-2/output-1/build/host-grpc-v1.16.1/CMakeFiles/CMakeTmp' /usr/bin/gmake -f CMakeFiles/cmTC_2ff42.dir/build.make CMakeFiles/cmTC_2ff42.dir/build gmake[2]: Entering directory '/home/naourr/work/instance-2/output-1/build/host-grpc-v1.16.1/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_2ff42.dir/CheckFunctionExists.c.o /usr/bin/gcc -O2 -I/home/naourr/work/instance-2/output-1/host/include -DCHECK_FUNCTION_EXISTS=pthread_create -fPIE -o CMakeFiles/cmTC_2ff42.dir/CheckFunctionExists.c.o -c /usr/share/cmake/Modules/CheckFunctionExists.c Linking C executable cmTC_2ff42 /usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_2ff42.dir/link.txt --verbose=1 /usr/bin/gcc -O2 -I/home/naourr/work/instance-2/output-1/host/include -DCHECK_FUNCTION_EXISTS=pthread_create -rdynamic CMakeFiles/cmTC_2ff42.dir/CheckFunctionExists.c.o -o cmTC_2ff42 -lpthreads /usr/bin/ld: cannot find -lpthreads collect2: error: ld returned 1 exit status gmake[2]: *** [CMakeFiles/cmTC_2ff42.dir/build.make:87: cmTC_2ff42] Error 1 gmake[2]: Leaving directory '/home/naourr/work/instance-2/output-1/build/host-grpc-v1.16.1/CMakeFiles/CMakeTmp' gmake[1]: *** [Makefile:121: cmTC_2ff42/fast] Error 2 gmake[1]: Leaving directory '/home/naourr/work/instance-2/output-1/build/host-grpc-v1.16.1/CMakeFiles/CMakeTmp'