Determining if the pthread_create exist failed with the following output:
Change Dir: /nvmedata/autobuild/instance-0/output-1/build/gr-osmosdr-46698a67e7e06419eefaf45c95129c0c12669045/buildroot-build/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_a5007/fast"
make[1]: Entering directory '/nvmedata/autobuild/instance-0/output-1/build/gr-osmosdr-46698a67e7e06419eefaf45c95129c0c12669045/buildroot-build/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_a5007.dir/build.make CMakeFiles/cmTC_a5007.dir/build
make[2]: Entering directory '/nvmedata/autobuild/instance-0/output-1/build/gr-osmosdr-46698a67e7e06419eefaf45c95129c0c12669045/buildroot-build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_a5007.dir/CheckSymbolExists.c.o
/nvmedata/autobuild/instance-0/output-1/host/bin/powerpc64le-linux-gcc --sysroot=/nvmedata/autobuild/instance-0/output-1/host/powerpc64le-buildroot-linux-gnu/sysroot   -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -D_FORTIFY_SOURCE=2   -DNDEBUG   -o CMakeFiles/cmTC_a5007.dir/CheckSymbolExists.c.o   -c /nvmedata/autobuild/instance-0/output-1/build/gr-osmosdr-46698a67e7e06419eefaf45c95129c0c12669045/buildroot-build/CMakeFiles/CMakeTmp/CheckSymbolExists.c
Linking C executable cmTC_a5007
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_a5007.dir/link.txt --verbose=1
/nvmedata/autobuild/instance-0/output-1/host/bin/powerpc64le-linux-gcc --sysroot=/nvmedata/autobuild/instance-0/output-1/host/powerpc64le-buildroot-linux-gnu/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -D_FORTIFY_SOURCE=2   -DNDEBUG    CMakeFiles/cmTC_a5007.dir/CheckSymbolExists.c.o  -o cmTC_a5007 
/nvmedata/autobuild/instance-0/output-1/host/opt/ext-toolchain/bin/../lib/gcc/powerpc64le-buildroot-linux-gnu/8.3.0/../../../../powerpc64le-buildroot-linux-gnu/bin/ld: CMakeFiles/cmTC_a5007.dir/CheckSymbolExists.c.o:(.toc+0x0): undefined reference to `pthread_create'
collect2: error: ld returned 1 exit status
make[2]: *** [CMakeFiles/cmTC_a5007.dir/build.make:87: cmTC_a5007] Error 1
make[2]: Leaving directory '/nvmedata/autobuild/instance-0/output-1/build/gr-osmosdr-46698a67e7e06419eefaf45c95129c0c12669045/buildroot-build/CMakeFiles/CMakeTmp'
make[1]: *** [Makefile:121: cmTC_a5007/fast] Error 2
make[1]: Leaving directory '/nvmedata/autobuild/instance-0/output-1/build/gr-osmosdr-46698a67e7e06419eefaf45c95129c0c12669045/buildroot-build/CMakeFiles/CMakeTmp'

File /nvmedata/autobuild/instance-0/output-1/build/gr-osmosdr-46698a67e7e06419eefaf45c95129c0c12669045/buildroot-build/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: /nvmedata/autobuild/instance-0/output-1/build/gr-osmosdr-46698a67e7e06419eefaf45c95129c0c12669045/buildroot-build/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_fa2bf/fast"
make[1]: Entering directory '/nvmedata/autobuild/instance-0/output-1/build/gr-osmosdr-46698a67e7e06419eefaf45c95129c0c12669045/buildroot-build/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_fa2bf.dir/build.make CMakeFiles/cmTC_fa2bf.dir/build
make[2]: Entering directory '/nvmedata/autobuild/instance-0/output-1/build/gr-osmosdr-46698a67e7e06419eefaf45c95129c0c12669045/buildroot-build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_fa2bf.dir/CheckFunctionExists.c.o
/nvmedata/autobuild/instance-0/output-1/host/bin/powerpc64le-linux-gcc --sysroot=/nvmedata/autobuild/instance-0/output-1/host/powerpc64le-buildroot-linux-gnu/sysroot   -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -D_FORTIFY_SOURCE=2 -DCHECK_FUNCTION_EXISTS=pthread_create  -DNDEBUG   -o CMakeFiles/cmTC_fa2bf.dir/CheckFunctionExists.c.o   -c /usr/share/cmake-3.13/Modules/CheckFunctionExists.c
Linking C executable cmTC_fa2bf
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_fa2bf.dir/link.txt --verbose=1
/nvmedata/autobuild/instance-0/output-1/host/bin/powerpc64le-linux-gcc --sysroot=/nvmedata/autobuild/instance-0/output-1/host/powerpc64le-buildroot-linux-gnu/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -D_FORTIFY_SOURCE=2 -DCHECK_FUNCTION_EXISTS=pthread_create  -DNDEBUG    CMakeFiles/cmTC_fa2bf.dir/CheckFunctionExists.c.o  -o cmTC_fa2bf -lpthreads 
/nvmedata/autobuild/instance-0/output-1/host/opt/ext-toolchain/bin/../lib/gcc/powerpc64le-buildroot-linux-gnu/8.3.0/../../../../powerpc64le-buildroot-linux-gnu/bin/ld: cannot find -lpthreads
collect2: error: ld returned 1 exit status
make[2]: *** [CMakeFiles/cmTC_fa2bf.dir/build.make:87: cmTC_fa2bf] Error 1
make[2]: Leaving directory '/nvmedata/autobuild/instance-0/output-1/build/gr-osmosdr-46698a67e7e06419eefaf45c95129c0c12669045/buildroot-build/CMakeFiles/CMakeTmp'
make[1]: *** [Makefile:121: cmTC_fa2bf/fast] Error 2
make[1]: Leaving directory '/nvmedata/autobuild/instance-0/output-1/build/gr-osmosdr-46698a67e7e06419eefaf45c95129c0c12669045/buildroot-build/CMakeFiles/CMakeTmp'


Performing C++ SOURCE FILE Test HAVE_MACH_ABSOLUTE_TIME failed with the following output:
Change Dir: /nvmedata/autobuild/instance-0/output-1/build/gr-osmosdr-46698a67e7e06419eefaf45c95129c0c12669045/buildroot-build/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_763f2/fast"
make[1]: Entering directory '/nvmedata/autobuild/instance-0/output-1/build/gr-osmosdr-46698a67e7e06419eefaf45c95129c0c12669045/buildroot-build/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_763f2.dir/build.make CMakeFiles/cmTC_763f2.dir/build
make[2]: Entering directory '/nvmedata/autobuild/instance-0/output-1/build/gr-osmosdr-46698a67e7e06419eefaf45c95129c0c12669045/buildroot-build/CMakeFiles/CMakeTmp'
Building CXX object CMakeFiles/cmTC_763f2.dir/src.cxx.o
/nvmedata/autobuild/instance-0/output-1/host/bin/powerpc64le-linux-g++ --sysroot=/nvmedata/autobuild/instance-0/output-1/host/powerpc64le-buildroot-linux-gnu/sysroot    -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -D_FORTIFY_SOURCE=2 -DHAVE_MACH_ABSOLUTE_TIME  -DNDEBUG   -std=gnu++11 -o CMakeFiles/cmTC_763f2.dir/src.cxx.o -c /nvmedata/autobuild/instance-0/output-1/build/gr-osmosdr-46698a67e7e06419eefaf45c95129c0c12669045/buildroot-build/CMakeFiles/CMakeTmp/src.cxx
/nvmedata/autobuild/instance-0/output-1/build/gr-osmosdr-46698a67e7e06419eefaf45c95129c0c12669045/buildroot-build/CMakeFiles/CMakeTmp/src.cxx:2:14: fatal error: mach/mach_time.h: No such file or directory
     #include <mach/mach_time.h>
              ^~~~~~~~~~~~~~~~~~
compilation terminated.
make[2]: *** [CMakeFiles/cmTC_763f2.dir/build.make:66: CMakeFiles/cmTC_763f2.dir/src.cxx.o] Error 1
make[2]: Leaving directory '/nvmedata/autobuild/instance-0/output-1/build/gr-osmosdr-46698a67e7e06419eefaf45c95129c0c12669045/buildroot-build/CMakeFiles/CMakeTmp'
make[1]: *** [Makefile:121: cmTC_763f2/fast] Error 2
make[1]: Leaving directory '/nvmedata/autobuild/instance-0/output-1/build/gr-osmosdr-46698a67e7e06419eefaf45c95129c0c12669045/buildroot-build/CMakeFiles/CMakeTmp'

Source file was:

    #include <mach/mach_time.h>
    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: /nvmedata/autobuild/instance-0/output-1/build/gr-osmosdr-46698a67e7e06419eefaf45c95129c0c12669045/buildroot-build/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_85d59/fast"
make[1]: Entering directory '/nvmedata/autobuild/instance-0/output-1/build/gr-osmosdr-46698a67e7e06419eefaf45c95129c0c12669045/buildroot-build/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_85d59.dir/build.make CMakeFiles/cmTC_85d59.dir/build
make[2]: Entering directory '/nvmedata/autobuild/instance-0/output-1/build/gr-osmosdr-46698a67e7e06419eefaf45c95129c0c12669045/buildroot-build/CMakeFiles/CMakeTmp'
Building CXX object CMakeFiles/cmTC_85d59.dir/src.cxx.o
/nvmedata/autobuild/instance-0/output-1/host/bin/powerpc64le-linux-g++ --sysroot=/nvmedata/autobuild/instance-0/output-1/host/powerpc64le-buildroot-linux-gnu/sysroot    -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -D_FORTIFY_SOURCE=2 -DHAVE_QUERY_PERFORMANCE_COUNTER  -DNDEBUG   -std=gnu++11 -o CMakeFiles/cmTC_85d59.dir/src.cxx.o -c /nvmedata/autobuild/instance-0/output-1/build/gr-osmosdr-46698a67e7e06419eefaf45c95129c0c12669045/buildroot-build/CMakeFiles/CMakeTmp/src.cxx
/nvmedata/autobuild/instance-0/output-1/build/gr-osmosdr-46698a67e7e06419eefaf45c95129c0c12669045/buildroot-build/CMakeFiles/CMakeTmp/src.cxx:2:14: fatal error: Windows.h: No such file or directory
     #include <Windows.h>
              ^~~~~~~~~~~
compilation terminated.
make[2]: *** [CMakeFiles/cmTC_85d59.dir/build.make:66: CMakeFiles/cmTC_85d59.dir/src.cxx.o] Error 1
make[2]: Leaving directory '/nvmedata/autobuild/instance-0/output-1/build/gr-osmosdr-46698a67e7e06419eefaf45c95129c0c12669045/buildroot-build/CMakeFiles/CMakeTmp'
make[1]: *** [Makefile:121: cmTC_85d59/fast] Error 2
make[1]: Leaving directory '/nvmedata/autobuild/instance-0/output-1/build/gr-osmosdr-46698a67e7e06419eefaf45c95129c0c12669045/buildroot-build/CMakeFiles/CMakeTmp'

Source file was:

    #include <Windows.h>
    int main(){
        LARGE_INTEGER value;
        QueryPerformanceCounter(&value);
        QueryPerformanceFrequency(&value);
        return 0;
    }