Determining if the pthread_create exist failed with the following output: Change Dir: /tmp/instance-2/output-1/build/gr-osmosdr-0.2.0/buildroot-build/CMakeFiles/CMakeTmp Run Build Command:"/usr/bin/make" "cmTC_9c5f7/fast" make[1]: Entering directory '/tmp/instance-2/output-1/build/gr-osmosdr-0.2.0/buildroot-build/CMakeFiles/CMakeTmp' /usr/bin/make -f CMakeFiles/cmTC_9c5f7.dir/build.make CMakeFiles/cmTC_9c5f7.dir/build make[2]: Entering directory '/tmp/instance-2/output-1/build/gr-osmosdr-0.2.0/buildroot-build/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_9c5f7.dir/CheckSymbolExists.c.o /tmp/instance-2/output-1/host/bin/arm-linux-gcc --sysroot=/tmp/instance-2/output-1/host/arm-buildroot-linux-gnueabihf/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -DNDEBUG -o CMakeFiles/cmTC_9c5f7.dir/CheckSymbolExists.c.o -c /tmp/instance-2/output-1/build/gr-osmosdr-0.2.0/buildroot-build/CMakeFiles/CMakeTmp/CheckSymbolExists.c Linking C executable cmTC_9c5f7 /usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_9c5f7.dir/link.txt --verbose=1 /tmp/instance-2/output-1/host/bin/arm-linux-gcc --sysroot=/tmp/instance-2/output-1/host/arm-buildroot-linux-gnueabihf/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -DNDEBUG CMakeFiles/cmTC_9c5f7.dir/CheckSymbolExists.c.o -o cmTC_9c5f7 /tmp/instance-2/output-1/host/opt/ext-toolchain/bin/../lib/gcc/arm-buildroot-linux-gnueabihf/9.2.0/../../../../arm-buildroot-linux-gnueabihf/bin/ld: CMakeFiles/cmTC_9c5f7.dir/CheckSymbolExists.c.o: in function `main': CheckSymbolExists.c:(.text.startup+0xc): undefined reference to `pthread_create' collect2: error: ld returned 1 exit status make[2]: *** [CMakeFiles/cmTC_9c5f7.dir/build.make:87: cmTC_9c5f7] Error 1 make[2]: Leaving directory '/tmp/instance-2/output-1/build/gr-osmosdr-0.2.0/buildroot-build/CMakeFiles/CMakeTmp' make[1]: *** [Makefile:121: cmTC_9c5f7/fast] Error 2 make[1]: Leaving directory '/tmp/instance-2/output-1/build/gr-osmosdr-0.2.0/buildroot-build/CMakeFiles/CMakeTmp' File /tmp/instance-2/output-1/build/gr-osmosdr-0.2.0/buildroot-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: /tmp/instance-2/output-1/build/gr-osmosdr-0.2.0/buildroot-build/CMakeFiles/CMakeTmp Run Build Command:"/usr/bin/make" "cmTC_fff8e/fast" make[1]: Entering directory '/tmp/instance-2/output-1/build/gr-osmosdr-0.2.0/buildroot-build/CMakeFiles/CMakeTmp' /usr/bin/make -f CMakeFiles/cmTC_fff8e.dir/build.make CMakeFiles/cmTC_fff8e.dir/build make[2]: Entering directory '/tmp/instance-2/output-1/build/gr-osmosdr-0.2.0/buildroot-build/CMakeFiles/CMakeTmp' Building C object CMakeFiles/cmTC_fff8e.dir/CheckFunctionExists.c.o /tmp/instance-2/output-1/host/bin/arm-linux-gcc --sysroot=/tmp/instance-2/output-1/host/arm-buildroot-linux-gnueabihf/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -DCHECK_FUNCTION_EXISTS=pthread_create -DNDEBUG -o CMakeFiles/cmTC_fff8e.dir/CheckFunctionExists.c.o -c /usr/share/cmake-3.13/Modules/CheckFunctionExists.c Linking C executable cmTC_fff8e /usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_fff8e.dir/link.txt --verbose=1 /tmp/instance-2/output-1/host/bin/arm-linux-gcc --sysroot=/tmp/instance-2/output-1/host/arm-buildroot-linux-gnueabihf/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -DCHECK_FUNCTION_EXISTS=pthread_create -DNDEBUG CMakeFiles/cmTC_fff8e.dir/CheckFunctionExists.c.o -o cmTC_fff8e -lpthreads /tmp/instance-2/output-1/host/opt/ext-toolchain/bin/../lib/gcc/arm-buildroot-linux-gnueabihf/9.2.0/../../../../arm-buildroot-linux-gnueabihf/bin/ld: cannot find -lpthreads collect2: error: ld returned 1 exit status make[2]: *** [CMakeFiles/cmTC_fff8e.dir/build.make:87: cmTC_fff8e] Error 1 make[2]: Leaving directory '/tmp/instance-2/output-1/build/gr-osmosdr-0.2.0/buildroot-build/CMakeFiles/CMakeTmp' make[1]: *** [Makefile:121: cmTC_fff8e/fast] Error 2 make[1]: Leaving directory '/tmp/instance-2/output-1/build/gr-osmosdr-0.2.0/buildroot-build/CMakeFiles/CMakeTmp' Performing C++ SOURCE FILE Test HAVE_MACH_ABSOLUTE_TIME failed with the following output: Change Dir: /tmp/instance-2/output-1/build/gr-osmosdr-0.2.0/buildroot-build/CMakeFiles/CMakeTmp Run Build Command:"/usr/bin/make" "cmTC_9800c/fast" make[1]: Entering directory '/tmp/instance-2/output-1/build/gr-osmosdr-0.2.0/buildroot-build/CMakeFiles/CMakeTmp' /usr/bin/make -f CMakeFiles/cmTC_9800c.dir/build.make CMakeFiles/cmTC_9800c.dir/build make[2]: Entering directory '/tmp/instance-2/output-1/build/gr-osmosdr-0.2.0/buildroot-build/CMakeFiles/CMakeTmp' Building CXX object CMakeFiles/cmTC_9800c.dir/src.cxx.o /tmp/instance-2/output-1/host/bin/arm-linux-g++ --sysroot=/tmp/instance-2/output-1/host/arm-buildroot-linux-gnueabihf/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -DHAVE_MACH_ABSOLUTE_TIME -DNDEBUG -std=gnu++11 -o CMakeFiles/cmTC_9800c.dir/src.cxx.o -c /tmp/instance-2/output-1/build/gr-osmosdr-0.2.0/buildroot-build/CMakeFiles/CMakeTmp/src.cxx /tmp/instance-2/output-1/build/gr-osmosdr-0.2.0/buildroot-build/CMakeFiles/CMakeTmp/src.cxx:2:14: fatal error: mach/mach_time.h: No such file or directory 2 | #include | ^~~~~~~~~~~~~~~~~~ compilation terminated. make[2]: *** [CMakeFiles/cmTC_9800c.dir/build.make:66: CMakeFiles/cmTC_9800c.dir/src.cxx.o] Error 1 make[2]: Leaving directory '/tmp/instance-2/output-1/build/gr-osmosdr-0.2.0/buildroot-build/CMakeFiles/CMakeTmp' make[1]: *** [Makefile:121: cmTC_9800c/fast] Error 2 make[1]: Leaving directory '/tmp/instance-2/output-1/build/gr-osmosdr-0.2.0/buildroot-build/CMakeFiles/CMakeTmp' Source file was: #include int main(){ mach_timebase_info_data_t info; mach_timebase_info(&info); mach_absolute_time(); return 0; } Performing C++ SOURCE FILE Test HAVE_QUERY_PERFORMANCE_COUNTER failed with the following output: Change Dir: /tmp/instance-2/output-1/build/gr-osmosdr-0.2.0/buildroot-build/CMakeFiles/CMakeTmp Run Build Command:"/usr/bin/make" "cmTC_336d9/fast" make[1]: Entering directory '/tmp/instance-2/output-1/build/gr-osmosdr-0.2.0/buildroot-build/CMakeFiles/CMakeTmp' /usr/bin/make -f CMakeFiles/cmTC_336d9.dir/build.make CMakeFiles/cmTC_336d9.dir/build make[2]: Entering directory '/tmp/instance-2/output-1/build/gr-osmosdr-0.2.0/buildroot-build/CMakeFiles/CMakeTmp' Building CXX object CMakeFiles/cmTC_336d9.dir/src.cxx.o /tmp/instance-2/output-1/host/bin/arm-linux-g++ --sysroot=/tmp/instance-2/output-1/host/arm-buildroot-linux-gnueabihf/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -DHAVE_QUERY_PERFORMANCE_COUNTER -DNDEBUG -std=gnu++11 -o CMakeFiles/cmTC_336d9.dir/src.cxx.o -c /tmp/instance-2/output-1/build/gr-osmosdr-0.2.0/buildroot-build/CMakeFiles/CMakeTmp/src.cxx /tmp/instance-2/output-1/build/gr-osmosdr-0.2.0/buildroot-build/CMakeFiles/CMakeTmp/src.cxx:2:14: fatal error: Windows.h: No such file or directory 2 | #include | ^~~~~~~~~~~ compilation terminated. make[2]: *** [CMakeFiles/cmTC_336d9.dir/build.make:66: CMakeFiles/cmTC_336d9.dir/src.cxx.o] Error 1 make[2]: Leaving directory '/tmp/instance-2/output-1/build/gr-osmosdr-0.2.0/buildroot-build/CMakeFiles/CMakeTmp' make[1]: *** [Makefile:121: cmTC_336d9/fast] Error 2 make[1]: Leaving directory '/tmp/instance-2/output-1/build/gr-osmosdr-0.2.0/buildroot-build/CMakeFiles/CMakeTmp' Source file was: #include int main(){ LARGE_INTEGER value; QueryPerformanceCounter(&value); QueryPerformanceFrequency(&value); return 0; }