Determining if the pthread_create exist failed with the following output:
Change Dir: /data/buildroot/buildroot-test/instance-1/output/build/gerbera-v1.3.1/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_7b101/fast"
make[1]: Entering directory '/data/buildroot/buildroot-test/instance-1/output/build/gerbera-v1.3.1/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_7b101.dir/build.make CMakeFiles/cmTC_7b101.dir/build
make[2]: Entering directory '/data/buildroot/buildroot-test/instance-1/output/build/gerbera-v1.3.1/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_7b101.dir/CheckSymbolExists.c.o
/data/buildroot/buildroot-test/instance-1/output/host/bin/arm-linux-gcc --sysroot=/data/buildroot/buildroot-test/instance-1/output/host/arm-buildroot-linux-gnueabihf/sysroot   -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os   -DNDEBUG   -o CMakeFiles/cmTC_7b101.dir/CheckSymbolExists.c.o   -c /data/buildroot/buildroot-test/instance-1/output/build/gerbera-v1.3.1/CMakeFiles/CMakeTmp/CheckSymbolExists.c
Linking C executable cmTC_7b101
/data/buildroot/buildroot-test/instance-1/output/host/bin/cmake -E cmake_link_script CMakeFiles/cmTC_7b101.dir/link.txt --verbose=1
/data/buildroot/buildroot-test/instance-1/output/host/bin/arm-linux-gcc --sysroot=/data/buildroot/buildroot-test/instance-1/output/host/arm-buildroot-linux-gnueabihf/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os   -DNDEBUG    CMakeFiles/cmTC_7b101.dir/CheckSymbolExists.c.o  -o cmTC_7b101 
/data/buildroot/buildroot-test/instance-1/output/host/opt/ext-toolchain/bin/../lib/gcc/arm-buildroot-linux-gnueabihf/8.2.0/../../../../arm-buildroot-linux-gnueabihf/bin/ld: CMakeFiles/cmTC_7b101.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_7b101.dir/build.make:98: cmTC_7b101] Error 1
make[2]: Leaving directory '/data/buildroot/buildroot-test/instance-1/output/build/gerbera-v1.3.1/CMakeFiles/CMakeTmp'
make[1]: *** [Makefile:126: cmTC_7b101/fast] Error 2
make[1]: Leaving directory '/data/buildroot/buildroot-test/instance-1/output/build/gerbera-v1.3.1/CMakeFiles/CMakeTmp'

File /data/buildroot/buildroot-test/instance-1/output/build/gerbera-v1.3.1/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: /data/buildroot/buildroot-test/instance-1/output/build/gerbera-v1.3.1/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_14b74/fast"
make[1]: Entering directory '/data/buildroot/buildroot-test/instance-1/output/build/gerbera-v1.3.1/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_14b74.dir/build.make CMakeFiles/cmTC_14b74.dir/build
make[2]: Entering directory '/data/buildroot/buildroot-test/instance-1/output/build/gerbera-v1.3.1/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_14b74.dir/CheckFunctionExists.c.o
/data/buildroot/buildroot-test/instance-1/output/host/bin/arm-linux-gcc --sysroot=/data/buildroot/buildroot-test/instance-1/output/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_14b74.dir/CheckFunctionExists.c.o   -c /data/buildroot/buildroot-test/instance-1/output/host/share/cmake-3.8/Modules/CheckFunctionExists.c
Linking C executable cmTC_14b74
/data/buildroot/buildroot-test/instance-1/output/host/bin/cmake -E cmake_link_script CMakeFiles/cmTC_14b74.dir/link.txt --verbose=1
/data/buildroot/buildroot-test/instance-1/output/host/bin/arm-linux-gcc --sysroot=/data/buildroot/buildroot-test/instance-1/output/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_14b74.dir/CheckFunctionExists.c.o  -o cmTC_14b74 -lpthreads 
/data/buildroot/buildroot-test/instance-1/output/host/opt/ext-toolchain/bin/../lib/gcc/arm-buildroot-linux-gnueabihf/8.2.0/../../../../arm-buildroot-linux-gnueabihf/bin/ld: cannot find -lpthreads
collect2: error: ld returned 1 exit status
make[2]: *** [CMakeFiles/cmTC_14b74.dir/build.make:98: cmTC_14b74] Error 1
make[2]: Leaving directory '/data/buildroot/buildroot-test/instance-1/output/build/gerbera-v1.3.1/CMakeFiles/CMakeTmp'
make[1]: *** [Makefile:126: cmTC_14b74/fast] Error 2
make[1]: Leaving directory '/data/buildroot/buildroot-test/instance-1/output/build/gerbera-v1.3.1/CMakeFiles/CMakeTmp'


Performing C++ SOURCE FILE Test ICONV_SECOND_ARGUMENT_IS_CONST failed with the following output:
Change Dir: /data/buildroot/buildroot-test/instance-1/output/build/gerbera-v1.3.1/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_3a11c/fast"
make[1]: Entering directory '/data/buildroot/buildroot-test/instance-1/output/build/gerbera-v1.3.1/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_3a11c.dir/build.make CMakeFiles/cmTC_3a11c.dir/build
make[2]: Entering directory '/data/buildroot/buildroot-test/instance-1/output/build/gerbera-v1.3.1/CMakeFiles/CMakeTmp'
Building CXX object CMakeFiles/cmTC_3a11c.dir/src.cxx.o
/data/buildroot/buildroot-test/instance-1/output/host/bin/arm-linux-g++ --sysroot=/data/buildroot/buildroot-test/instance-1/output/host/arm-buildroot-linux-gnueabihf/sysroot    -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os   -latomic -Wall -DICONV_SECOND_ARGUMENT_IS_CONST  -DNDEBUG   -std=c++1z -o CMakeFiles/cmTC_3a11c.dir/src.cxx.o -c /data/buildroot/buildroot-test/instance-1/output/build/gerbera-v1.3.1/CMakeFiles/CMakeTmp/src.cxx
/data/buildroot/buildroot-test/instance-1/output/build/gerbera-v1.3.1/CMakeFiles/CMakeTmp/src.cxx: In function 'int main()':
/data/buildroot/buildroot-test/instance-1/output/build/gerbera-v1.3.1/CMakeFiles/CMakeTmp/src.cxx:9:17: error: invalid conversion from 'const char**' to 'char**' [-fpermissive]
     iconv(conv, &in, &ilen, &out, &olen);
                 ^~~
In file included from /data/buildroot/buildroot-test/instance-1/output/build/gerbera-v1.3.1/CMakeFiles/CMakeTmp/src.cxx:2:
/data/buildroot/buildroot-test/instance-1/output/host/arm-buildroot-linux-gnueabihf/sysroot/usr/include/iconv.h:42:54: note:   initializing argument 2 of 'size_t iconv(iconv_t, char**, size_t*, char**, size_t*)'
 extern size_t iconv (iconv_t __cd, char **__restrict __inbuf,
                                    ~~~~~~~~~~~~~~~~~~^~~~~~~
make[2]: *** [CMakeFiles/cmTC_3a11c.dir/build.make:66: CMakeFiles/cmTC_3a11c.dir/src.cxx.o] Error 1
make[2]: Leaving directory '/data/buildroot/buildroot-test/instance-1/output/build/gerbera-v1.3.1/CMakeFiles/CMakeTmp'
make[1]: *** [Makefile:126: cmTC_3a11c/fast] Error 2
make[1]: Leaving directory '/data/buildroot/buildroot-test/instance-1/output/build/gerbera-v1.3.1/CMakeFiles/CMakeTmp'

Source file was:

  #include <iconv.h>
  int main(){
    iconv_t conv = 0;
    const char* in = 0;
    size_t ilen = 0;
    char* out = 0;
    size_t olen = 0;
    iconv(conv, &in, &ilen, &out, &olen);
    return 0;
  }

Performing C++ SOURCE FILE Test FOUND_BSD_UUID failed with the following output:
Change Dir: /data/buildroot/buildroot-test/instance-1/output/build/gerbera-v1.3.1/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_b0037/fast"
make[1]: Entering directory '/data/buildroot/buildroot-test/instance-1/output/build/gerbera-v1.3.1/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_b0037.dir/build.make CMakeFiles/cmTC_b0037.dir/build
make[2]: Entering directory '/data/buildroot/buildroot-test/instance-1/output/build/gerbera-v1.3.1/CMakeFiles/CMakeTmp'
Building CXX object CMakeFiles/cmTC_b0037.dir/src.cxx.o
/data/buildroot/buildroot-test/instance-1/output/host/bin/arm-linux-g++ --sysroot=/data/buildroot/buildroot-test/instance-1/output/host/arm-buildroot-linux-gnueabihf/sysroot    -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Os   -latomic -Wall -DFOUND_BSD_UUID  -DNDEBUG   -std=c++1z -o CMakeFiles/cmTC_b0037.dir/src.cxx.o -c /data/buildroot/buildroot-test/instance-1/output/build/gerbera-v1.3.1/CMakeFiles/CMakeTmp/src.cxx
/data/buildroot/buildroot-test/instance-1/output/build/gerbera-v1.3.1/CMakeFiles/CMakeTmp/src.cxx:2:13: fatal error: uuid.h: No such file or directory
    #include <uuid.h>
             ^~~~~~~~
compilation terminated.
make[2]: *** [CMakeFiles/cmTC_b0037.dir/build.make:66: CMakeFiles/cmTC_b0037.dir/src.cxx.o] Error 1
make[2]: Leaving directory '/data/buildroot/buildroot-test/instance-1/output/build/gerbera-v1.3.1/CMakeFiles/CMakeTmp'
make[1]: *** [Makefile:126: cmTC_b0037/fast] Error 2
make[1]: Leaving directory '/data/buildroot/buildroot-test/instance-1/output/build/gerbera-v1.3.1/CMakeFiles/CMakeTmp'

Return value: 1
Source file was:

			#include <uuid.h>
			int main(void) {
				 uuid_t uuid;
				 uint32_t status;
				 uuid_create(&uuid, &status);
				 return 0;
			}