Performing C SOURCE FILE Test CMAKE_HAVE_LIBC_PTHREAD failed with the following output: Change Dir: /usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-1/output-1/build/libplatform-a7cd0d5780ed80a4e70480d1650749f29e8a1fb2/CMakeFiles/CMakeTmp Run Build Command(s):/usr/bin/gmake cmTC_d84a2/fast && gmake[1]: Entering directory `/usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-1/output-1/build/libplatform-a7cd0d5780ed80a4e70480d1650749f29e8a1fb2/CMakeFiles/CMakeTmp' /usr/bin/gmake -f CMakeFiles/cmTC_d84a2.dir/build.make CMakeFiles/cmTC_d84a2.dir/build gmake[2]: Entering directory `/usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-1/output-1/build/libplatform-a7cd0d5780ed80a4e70480d1650749f29e8a1fb2/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_d84a2.dir/src.c.o /usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-1/output-1/host/bin/mips-linux-gnu-gcc --sysroot=/usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-1/output-1/host/mips-buildroot-linux-gnu/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -DCMAKE_HAVE_LIBC_PTHREAD -DNDEBUG -o CMakeFiles/cmTC_d84a2.dir/src.c.o -c /usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-1/output-1/build/libplatform-a7cd0d5780ed80a4e70480d1650749f29e8a1fb2/CMakeFiles/CMakeTmp/src.c Linking C executable cmTC_d84a2 /usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-1/output-1/host/bin/cmake -E cmake_link_script CMakeFiles/cmTC_d84a2.dir/link.txt --verbose=1 /usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-1/output-1/host/bin/mips-linux-gnu-gcc --sysroot=/usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-1/output-1/host/mips-buildroot-linux-gnu/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -DCMAKE_HAVE_LIBC_PTHREAD -DNDEBUG CMakeFiles/cmTC_d84a2.dir/src.c.o -o cmTC_d84a2 CMakeFiles/cmTC_d84a2.dir/src.c.o: In function `main': src.c:(.text.startup+0x18): undefined reference to `pthread_create' src.c:(.text.startup+0x20): undefined reference to `pthread_detach' src.c:(.text.startup+0x2c): undefined reference to `pthread_join' src.c:(.text.startup+0x3c): undefined reference to `pthread_atfork' collect2: error: ld returned 1 exit status gmake[2]: *** [cmTC_d84a2] Error 1 gmake[2]: Leaving directory `/usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-1/output-1/build/libplatform-a7cd0d5780ed80a4e70480d1650749f29e8a1fb2/CMakeFiles/CMakeTmp' gmake[1]: *** [cmTC_d84a2/fast] Error 2 gmake[1]: Leaving directory `/usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-1/output-1/build/libplatform-a7cd0d5780ed80a4e70480d1650749f29e8a1fb2/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: /usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-1/output-1/build/libplatform-a7cd0d5780ed80a4e70480d1650749f29e8a1fb2/CMakeFiles/CMakeTmp Run Build Command(s):/usr/bin/gmake cmTC_2f060/fast && gmake[1]: Entering directory `/usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-1/output-1/build/libplatform-a7cd0d5780ed80a4e70480d1650749f29e8a1fb2/CMakeFiles/CMakeTmp' /usr/bin/gmake -f CMakeFiles/cmTC_2f060.dir/build.make CMakeFiles/cmTC_2f060.dir/build gmake[2]: Entering directory `/usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-1/output-1/build/libplatform-a7cd0d5780ed80a4e70480d1650749f29e8a1fb2/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_2f060.dir/CheckFunctionExists.c.o /usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-1/output-1/host/bin/mips-linux-gnu-gcc --sysroot=/usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-1/output-1/host/mips-buildroot-linux-gnu/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -DCHECK_FUNCTION_EXISTS=pthread_create -DNDEBUG -o CMakeFiles/cmTC_2f060.dir/CheckFunctionExists.c.o -c /usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-1/output-1/host/share/cmake-3.15/Modules/CheckFunctionExists.c Linking C executable cmTC_2f060 /usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-1/output-1/host/bin/cmake -E cmake_link_script CMakeFiles/cmTC_2f060.dir/link.txt --verbose=1 /usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-1/output-1/host/bin/mips-linux-gnu-gcc --sysroot=/usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-1/output-1/host/mips-buildroot-linux-gnu/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -DCHECK_FUNCTION_EXISTS=pthread_create -DNDEBUG CMakeFiles/cmTC_2f060.dir/CheckFunctionExists.c.o -o cmTC_2f060 -lpthreads /usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-1/output-1/host/opt/ext-toolchain/bin/../lib/gcc/mips-linux-gnu/5.3.0/../../../../mips-linux-gnu/bin/ld: cannot find -lpthreads collect2: error: ld returned 1 exit status gmake[2]: *** [cmTC_2f060] Error 1 gmake[2]: Leaving directory `/usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-1/output-1/build/libplatform-a7cd0d5780ed80a4e70480d1650749f29e8a1fb2/CMakeFiles/CMakeTmp' gmake[1]: *** [cmTC_2f060/fast] Error 2 gmake[1]: Leaving directory `/usr/lfs/hdd_v1/rc-buildroot-test/scripts/instance-1/output-1/build/libplatform-a7cd0d5780ed80a4e70480d1650749f29e8a1fb2/CMakeFiles/CMakeTmp'