My Kodi Build Error

Determining if the pthread_create exist failed with the following output:
Change Dir: /home/jason/kodi/kodi-18.1+git20190217.1232-final/kodi_build_x11/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_f5ce7/fast"
make[2]: Entering directory '/home/jason/kodi/kodi-18.1+git20190217.1232-final/kodi_build_x11/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_f5ce7.dir/build.make CMakeFiles/cmTC_f5ce7.dir/build
make[3]: Entering directory '/home/jason/kodi/kodi-18.1+git20190217.1232-final/kodi_build_x11/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_f5ce7.dir/CheckSymbolExists.c.o
/usr/bin/cc    -g -fdebug-prefix-map=/home/jason/kodi/kodi-18.1+git20190217.1232-final=. -fstack-protector-strong -Wf$
Linking C executable cmTC_f5ce7
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_f5ce7.dir/link.txt --verbose=1
/usr/bin/cc  -g -fdebug-prefix-map=/home/jason/kodi/kodi-18.1+git20190217.1232-final=. -fstack-protector-strong -Wfor$
./kodi_build_x11/CMakeFiles/CMakeTmp/CheckSymbolExists.c:8: error: undefined reference to 'pthread_create'
collect2: error: ld returned 1 exit status
CMakeFiles/cmTC_f5ce7.dir/build.make:97: recipe for target 'cmTC_f5ce7' failed
make[3]: *** [cmTC_f5ce7] Error 1
make[3]: Leaving directory '/home/jason/kodi/kodi-18.1+git20190217.1232-final/kodi_build_x11/CMakeFiles/CMakeTmp'
Makefile:126: recipe for target 'cmTC_f5ce7/fast' failed
make[2]: *** [cmTC_f5ce7/fast] Error 2
make[2]: Leaving directory '/home/jason/kodi/kodi-18.1+git20190217.1232-final/kodi_build_x11/CMakeFiles/CMakeTmp'

File /home/jason/kodi/kodi-18.1+git20190217.1232-final/kodi_build_x11/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/jason/kodi/kodi-18.1+git20190217.1232-final/kodi_build_x11/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_21fd8/fast"
make[2]: Entering directory '/home/jason/kodi/kodi-18.1+git20190217.1232-final/kodi_build_x11/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_21fd8.dir/build.make CMakeFiles/cmTC_21fd8.dir/build
make[3]: Entering directory '/home/jason/kodi/kodi-18.1+git20190217.1232-final/kodi_build_x11/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_21fd8.dir/CheckFunctionExists.c.o
/usr/bin/cc    -g -fdebug-prefix-map=/home/jason/kodi/kodi-18.1+git20190217.1232-final=. -fstack-protector-strong -Wf$
Linking C executable cmTC_21fd8
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_21fd8.dir/link.txt --verbose=1
/usr/bin/cc  -g -fdebug-prefix-map=/home/jason/kodi/kodi-18.1+git20190217.1232-final=. -fstack-protector-strong -Wfor$
/usr/bin/ld.gold: error: cannot find -lpthreads
/usr/share/cmake-3.7/Modules/CheckFunctionExists.c:17: error: undefined reference to 'pthread_create'
collect2: error: ld returned 1 exit status
CMakeFiles/cmTC_21fd8.dir/build.make:97: recipe for target 'cmTC_21fd8' failed
make[3]: *** [cmTC_21fd8] Error 1
make[3]: Leaving directory '/home/jason/kodi/kodi-18.1+git20190217.1232-final/kodi_build_x11/CMakeFiles/CMakeTmp'
Makefile:126: recipe for target 'cmTC_21fd8/fast' failed
make[2]: *** [cmTC_21fd8/fast] Error 2
make[2]: Leaving directory '/home/jason/kodi/kodi-18.1+git20190217.1232-final/kodi_build_x11/CMakeFiles/CMakeTmp'