Determining if the pthread_create exist failed with the following output:
Change Dir: /home/shadow8t4/Documents/CSCE441/L08/build/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_bd24f/fast"
/usr/bin/make -f CMakeFiles/cmTC_bd24f.dir/build.make CMakeFiles/cmTC_bd24f.dir/build
make[1]: Entering directory '/home/shadow8t4/Documents/CSCE441/L08/build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_bd24f.dir/CheckSymbolExists.c.o
/usr/lib/hardening-wrapper/bin/cc     -o CMakeFiles/cmTC_bd24f.dir/CheckSymbolExists.c.o   -c /home/shadow8t4/Documents/CSCE441/L08/build/CMakeFiles/CMakeTmp/CheckSymbolExists.c
Linking C executable cmTC_bd24f
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_bd24f.dir/link.txt --verbose=1
/usr/lib/hardening-wrapper/bin/cc       CMakeFiles/cmTC_bd24f.dir/CheckSymbolExists.c.o  -o cmTC_bd24f -rdynamic 
CMakeFiles/cmTC_bd24f.dir/CheckSymbolExists.c.o: In function `main':
CheckSymbolExists.c:(.text+0x1b): undefined reference to `pthread_create'
collect2: error: ld returned 1 exit status
make[1]: *** [CMakeFiles/cmTC_bd24f.dir/build.make:98: cmTC_bd24f] Error 1
make[1]: Leaving directory '/home/shadow8t4/Documents/CSCE441/L08/build/CMakeFiles/CMakeTmp'
make: *** [Makefile:126: cmTC_bd24f/fast] Error 2

File /home/shadow8t4/Documents/CSCE441/L08/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: /home/shadow8t4/Documents/CSCE441/L08/build/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_74947/fast"
/usr/bin/make -f CMakeFiles/cmTC_74947.dir/build.make CMakeFiles/cmTC_74947.dir/build
make[1]: Entering directory '/home/shadow8t4/Documents/CSCE441/L08/build/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_74947.dir/CheckFunctionExists.c.o
/usr/lib/hardening-wrapper/bin/cc    -DCHECK_FUNCTION_EXISTS=pthread_create   -o CMakeFiles/cmTC_74947.dir/CheckFunctionExists.c.o   -c /usr/share/cmake-3.7/Modules/CheckFunctionExists.c
Linking C executable cmTC_74947
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_74947.dir/link.txt --verbose=1
/usr/lib/hardening-wrapper/bin/cc   -DCHECK_FUNCTION_EXISTS=pthread_create    CMakeFiles/cmTC_74947.dir/CheckFunctionExists.c.o  -o cmTC_74947 -rdynamic -lpthreads 
/usr/bin/ld: cannot find -lpthreads
collect2: error: ld returned 1 exit status
make[1]: *** [CMakeFiles/cmTC_74947.dir/build.make:98: cmTC_74947] Error 1
make[1]: Leaving directory '/home/shadow8t4/Documents/CSCE441/L08/build/CMakeFiles/CMakeTmp'
make: *** [Makefile:126: cmTC_74947/fast] Error 2