Determining if the pthread_create exist failed with the following output:
Change Dir: /home/justin/root/Root_Science/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_3e175/fast"
/usr/bin/make -f CMakeFiles/cmTC_3e175.dir/build.make CMakeFiles/cmTC_3e175.dir/build
make[1]: Entering directory `/home/justin/root/Root_Science/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_3e175.dir/CheckSymbolExists.c.o
/usr/bin/cc     -o CMakeFiles/cmTC_3e175.dir/CheckSymbolExists.c.o   -c /home/justin/root/Root_Science/CMakeFiles/CMakeTmp/CheckSymbolExists.c
Linking C executable cmTC_3e175
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_3e175.dir/link.txt --verbose=1
/usr/bin/cc       CMakeFiles/cmTC_3e175.dir/CheckSymbolExists.c.o  -o cmTC_3e175 
CMakeFiles/cmTC_3e175.dir/CheckSymbolExists.c.o: In function `main':
CheckSymbolExists.c:(.text+0x16): undefined reference to `pthread_create'
collect2: error: ld returned 1 exit status
make[1]: *** [cmTC_3e175] Error 1
make[1]: Leaving directory `/home/justin/root/Root_Science/CMakeFiles/CMakeTmp'
make: *** [cmTC_3e175/fast] Error 2

File /home/justin/root/Root_Science/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: /home/justin/root/Root_Science/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_56f5b/fast"
/usr/bin/make -f CMakeFiles/cmTC_56f5b.dir/build.make CMakeFiles/cmTC_56f5b.dir/build
make[1]: Entering directory `/home/justin/root/Root_Science/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_56f5b.dir/CheckFunctionExists.c.o
/usr/bin/cc    -DCHECK_FUNCTION_EXISTS=pthread_create   -o CMakeFiles/cmTC_56f5b.dir/CheckFunctionExists.c.o   -c /usr/share/cmake-3.5/Modules/CheckFunctionExists.c
Linking C executable cmTC_56f5b
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_56f5b.dir/link.txt --verbose=1
/usr/bin/cc   -DCHECK_FUNCTION_EXISTS=pthread_create    CMakeFiles/cmTC_56f5b.dir/CheckFunctionExists.c.o  -o cmTC_56f5b -lpthreads 
/usr/bin/ld: cannot find -lpthreads
collect2: error: ld returned 1 exit status
make[1]: *** [cmTC_56f5b] Error 1
make[1]: Leaving directory `/home/justin/root/Root_Science/CMakeFiles/CMakeTmp'
make: *** [cmTC_56f5b/fast] Error 2


Performing C++ SOURCE FILE Test GLIBCXX_USE_CXX11_ABI failed with the following output:
Change Dir: /home/justin/root/Root_Science/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_647ee/fast"
/usr/bin/make -f CMakeFiles/cmTC_647ee.dir/build.make CMakeFiles/cmTC_647ee.dir/build
make[1]: Entering directory `/home/justin/root/Root_Science/CMakeFiles/CMakeTmp'
Building CXX object CMakeFiles/cmTC_647ee.dir/src.cxx.o
/usr/bin/c++     -pipe -m64  -Wshadow -Wall -W -Woverloaded-virtual -fsigned-char -pthread -std=c++11 -DGLIBCXX_USE_CXX11_ABI   -o CMakeFiles/cmTC_647ee.dir/src.cxx.o -c /home/justin/root/Root_Science/CMakeFiles/CMakeTmp/src.cxx
/home/justin/root/Root_Science/CMakeFiles/CMakeTmp/src.cxx:4:4: error: #error NOCXX11
   #error NOCXX11
    ^
make[1]: *** [CMakeFiles/cmTC_647ee.dir/src.cxx.o] Error 1
make[1]: Leaving directory `/home/justin/root/Root_Science/CMakeFiles/CMakeTmp'
make: *** [cmTC_647ee/fast] Error 2

Source file was:

#include <string>
#if _GLIBCXX_USE_CXX11_ABI == 0
  #error NOCXX11
#endif
int main() {}