Performing C SOURCE FILE Test CMAKE_HAVE_LIBC_PTHREAD failed with the following output: Change Dir: /home/buildroot/autobuild/run/instance-3/output-1/build/gerbera-1.8.1/CMakeFiles/CMakeTmp Run Build Command(s):/usr/bin/make cmTC_bb5cb/fast && make[1]: Entering directory `/home/buildroot/autobuild/run/instance-3/output-1/build/gerbera-1.8.1/CMakeFiles/CMakeTmp' /usr/bin/make -f CMakeFiles/cmTC_bb5cb.dir/build.make CMakeFiles/cmTC_bb5cb.dir/build make[2]: Entering directory `/home/buildroot/autobuild/run/instance-3/output-1/build/gerbera-1.8.1/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_bb5cb.dir/src.c.o /home/buildroot/autobuild/run/instance-3/output-1/host/bin/riscv64-linux-gcc --sysroot=/home/buildroot/autobuild/run/instance-3/output-1/host/riscv64-buildroot-linux-gnu/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -D_FORTIFY_SOURCE=1 -DCMAKE_HAVE_LIBC_PTHREAD -DNDEBUG -o CMakeFiles/cmTC_bb5cb.dir/src.c.o -c /home/buildroot/autobuild/run/instance-3/output-1/build/gerbera-1.8.1/CMakeFiles/CMakeTmp/src.c Linking C executable cmTC_bb5cb /home/buildroot/autobuild/run/instance-3/output-1/host/bin/cmake -E cmake_link_script CMakeFiles/cmTC_bb5cb.dir/link.txt --verbose=1 /home/buildroot/autobuild/run/instance-3/output-1/host/bin/riscv64-linux-gcc --sysroot=/home/buildroot/autobuild/run/instance-3/output-1/host/riscv64-buildroot-linux-gnu/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -D_FORTIFY_SOURCE=1 -DCMAKE_HAVE_LIBC_PTHREAD -DNDEBUG -latomic CMakeFiles/cmTC_bb5cb.dir/src.c.o -o cmTC_bb5cb /home/buildroot/autobuild/run/instance-3/output-1/host/opt/ext-toolchain/bin/../lib/gcc/riscv64-buildroot-linux-gnu/10.2.0/../../../../riscv64-buildroot-linux-gnu/bin/ld: CMakeFiles/cmTC_bb5cb.dir/src.c.o: undefined reference to symbol 'pthread_detach@@GLIBC_2.27' /home/buildroot/autobuild/run/instance-3/output-1/host/opt/ext-toolchain/bin/../lib/gcc/riscv64-buildroot-linux-gnu/10.2.0/../../../../riscv64-buildroot-linux-gnu/bin/ld: /home/buildroot/autobuild/run/instance-3/output-1/host/riscv64-buildroot-linux-gnu/sysroot/lib64/libpthread.so.0: error adding symbols: DSO missing from command line collect2: error: ld returned 1 exit status make[2]: *** [cmTC_bb5cb] Error 1 make[2]: Leaving directory `/home/buildroot/autobuild/run/instance-3/output-1/build/gerbera-1.8.1/CMakeFiles/CMakeTmp' make[1]: *** [cmTC_bb5cb/fast] Error 2 make[1]: Leaving directory `/home/buildroot/autobuild/run/instance-3/output-1/build/gerbera-1.8.1/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/buildroot/autobuild/run/instance-3/output-1/build/gerbera-1.8.1/CMakeFiles/CMakeTmp Run Build Command(s):/usr/bin/make cmTC_e9f2a/fast && make[1]: Entering directory `/home/buildroot/autobuild/run/instance-3/output-1/build/gerbera-1.8.1/CMakeFiles/CMakeTmp' /usr/bin/make -f CMakeFiles/cmTC_e9f2a.dir/build.make CMakeFiles/cmTC_e9f2a.dir/build make[2]: Entering directory `/home/buildroot/autobuild/run/instance-3/output-1/build/gerbera-1.8.1/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_e9f2a.dir/CheckFunctionExists.c.o /home/buildroot/autobuild/run/instance-3/output-1/host/bin/riscv64-linux-gcc --sysroot=/home/buildroot/autobuild/run/instance-3/output-1/host/riscv64-buildroot-linux-gnu/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -D_FORTIFY_SOURCE=1 -DCHECK_FUNCTION_EXISTS=pthread_create -DNDEBUG -o CMakeFiles/cmTC_e9f2a.dir/CheckFunctionExists.c.o -c /home/buildroot/autobuild/run/instance-3/output-1/host/share/cmake-3.16/Modules/CheckFunctionExists.c Linking C executable cmTC_e9f2a /home/buildroot/autobuild/run/instance-3/output-1/host/bin/cmake -E cmake_link_script CMakeFiles/cmTC_e9f2a.dir/link.txt --verbose=1 /home/buildroot/autobuild/run/instance-3/output-1/host/bin/riscv64-linux-gcc --sysroot=/home/buildroot/autobuild/run/instance-3/output-1/host/riscv64-buildroot-linux-gnu/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -D_FORTIFY_SOURCE=1 -DCHECK_FUNCTION_EXISTS=pthread_create -DNDEBUG -latomic CMakeFiles/cmTC_e9f2a.dir/CheckFunctionExists.c.o -o cmTC_e9f2a -lpthreads /home/buildroot/autobuild/run/instance-3/output-1/host/opt/ext-toolchain/bin/../lib/gcc/riscv64-buildroot-linux-gnu/10.2.0/../../../../riscv64-buildroot-linux-gnu/bin/ld: cannot find -lpthreads collect2: error: ld returned 1 exit status make[2]: *** [cmTC_e9f2a] Error 1 make[2]: Leaving directory `/home/buildroot/autobuild/run/instance-3/output-1/build/gerbera-1.8.1/CMakeFiles/CMakeTmp' make[1]: *** [cmTC_e9f2a/fast] Error 2 make[1]: Leaving directory `/home/buildroot/autobuild/run/instance-3/output-1/build/gerbera-1.8.1/CMakeFiles/CMakeTmp' Performing C++ SOURCE FILE Test FOUND_BSD_UUID failed with the following output: Change Dir: /home/buildroot/autobuild/run/instance-3/output-1/build/gerbera-1.8.1/CMakeFiles/CMakeTmp Run Build Command(s):/usr/bin/make cmTC_75178/fast && make[1]: Entering directory `/home/buildroot/autobuild/run/instance-3/output-1/build/gerbera-1.8.1/CMakeFiles/CMakeTmp' /usr/bin/make -f CMakeFiles/cmTC_75178.dir/build.make CMakeFiles/cmTC_75178.dir/build make[2]: Entering directory `/home/buildroot/autobuild/run/instance-3/output-1/build/gerbera-1.8.1/CMakeFiles/CMakeTmp' Building CXX object CMakeFiles/cmTC_75178.dir/src.cxx.o /home/buildroot/autobuild/run/instance-3/output-1/host/bin/riscv64-linux-g++ --sysroot=/home/buildroot/autobuild/run/instance-3/output-1/host/riscv64-buildroot-linux-gnu/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -D_FORTIFY_SOURCE=1 -DFOUND_BSD_UUID -DNDEBUG -std=c++17 -o CMakeFiles/cmTC_75178.dir/src.cxx.o -c /home/buildroot/autobuild/run/instance-3/output-1/build/gerbera-1.8.1/CMakeFiles/CMakeTmp/src.cxx /home/buildroot/autobuild/run/instance-3/output-1/build/gerbera-1.8.1/CMakeFiles/CMakeTmp/src.cxx:2:13: fatal error: uuid.h: No such file or directory 2 | #include | ^~~~~~~~ compilation terminated. make[2]: *** [CMakeFiles/cmTC_75178.dir/src.cxx.o] Error 1 make[2]: Leaving directory `/home/buildroot/autobuild/run/instance-3/output-1/build/gerbera-1.8.1/CMakeFiles/CMakeTmp' make[1]: *** [cmTC_75178/fast] Error 2 make[1]: Leaving directory `/home/buildroot/autobuild/run/instance-3/output-1/build/gerbera-1.8.1/CMakeFiles/CMakeTmp' ...and run output: Return value: 1 Source file was: #include int main(void) { uuid_t uuid; uint32_t status; uuid_create(&uuid, &status); return 0; }