Determining if files X11/extensions/Xinerama.h exist failed with the following output:
Change Dir: /home/rclinux/rc-buildroot-test/scripts/instance-1/output/build/synergy-v2.0.12-beta/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_5df5b/fast"
make[1]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-1/output/build/synergy-v2.0.12-beta/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_5df5b.dir/build.make CMakeFiles/cmTC_5df5b.dir/build
make[2]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-1/output/build/synergy-v2.0.12-beta/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_5df5b.dir/CheckIncludeFiles.c.o
/home/rclinux/rc-buildroot-test/scripts/instance-1/output/host/bin/powerpc-ctng_e500v2-linux-gnuspe-gcc  --sysroot=/home/rclinux/rc-buildroot-test/scripts/instance-1/output/host/powerpc-buildroot-linux-gnuspe/sysroot   -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -mabi=spe -mfloat-gprs=double -Wa,-me500x2 -Os   -DNDEBUG   -o CMakeFiles/cmTC_5df5b.dir/CheckIncludeFiles.c.o   -c /home/rclinux/rc-buildroot-test/scripts/instance-1/output/build/synergy-v2.0.12-beta/CMakeFiles/CMakeTmp/CheckIncludeFiles.c
/home/rclinux/rc-buildroot-test/scripts/instance-1/output/build/synergy-v2.0.12-beta/CMakeFiles/CMakeTmp/CheckIncludeFiles.c:2:37: fatal error: X11/extensions/Xinerama.h: No such file or directory
compilation terminated.
CMakeFiles/cmTC_5df5b.dir/build.make:65: recipe for target 'CMakeFiles/cmTC_5df5b.dir/CheckIncludeFiles.c.o' failed
make[2]: *** [CMakeFiles/cmTC_5df5b.dir/CheckIncludeFiles.c.o] Error 1
make[2]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-1/output/build/synergy-v2.0.12-beta/CMakeFiles/CMakeTmp'
Makefile:126: recipe for target 'cmTC_5df5b/fast' failed
make[1]: *** [cmTC_5df5b/fast] Error 2
make[1]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-1/output/build/synergy-v2.0.12-beta/CMakeFiles/CMakeTmp'

Source:
/* */
#include <X11/extensions/Xinerama.h>


int main(void){return 0;}

Determining if the function XineramaQueryExtension exists in the Xinerama failed with the following output:
Change Dir: /home/rclinux/rc-buildroot-test/scripts/instance-1/output/build/synergy-v2.0.12-beta/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_14d9e/fast"
make[1]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-1/output/build/synergy-v2.0.12-beta/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_14d9e.dir/build.make CMakeFiles/cmTC_14d9e.dir/build
make[2]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-1/output/build/synergy-v2.0.12-beta/CMakeFiles/CMakeTmp'
Building C object CMakeFiles/cmTC_14d9e.dir/CheckFunctionExists.c.o
/home/rclinux/rc-buildroot-test/scripts/instance-1/output/host/bin/powerpc-ctng_e500v2-linux-gnuspe-gcc  --sysroot=/home/rclinux/rc-buildroot-test/scripts/instance-1/output/host/powerpc-buildroot-linux-gnuspe/sysroot   -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -mabi=spe -mfloat-gprs=double -Wa,-me500x2 -Os -DCHECK_FUNCTION_EXISTS=XineramaQueryExtension  -DNDEBUG   -o CMakeFiles/cmTC_14d9e.dir/CheckFunctionExists.c.o   -c /usr/share/cmake-3.5/Modules/CheckFunctionExists.c
Linking C executable cmTC_14d9e
/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_14d9e.dir/link.txt --verbose=1
/home/rclinux/rc-buildroot-test/scripts/instance-1/output/host/bin/powerpc-ctng_e500v2-linux-gnuspe-gcc  --sysroot=/home/rclinux/rc-buildroot-test/scripts/instance-1/output/host/powerpc-buildroot-linux-gnuspe/sysroot -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -mabi=spe -mfloat-gprs=double -Wa,-me500x2 -Os -DCHECK_FUNCTION_EXISTS=XineramaQueryExtension  -DNDEBUG    CMakeFiles/cmTC_14d9e.dir/CheckFunctionExists.c.o  -o cmTC_14d9e -lXinerama 
/home/rclinux/rc-buildroot-test/scripts/instance-1/output/host/opt/ext-toolchain/bin/../lib/gcc/powerpc-ctng_e500v2-linux-gnuspe/4.7.3/../../../../powerpc-ctng_e500v2-linux-gnuspe/bin/ld: cannot find -lXinerama
collect2: error: ld returned 1 exit status
CMakeFiles/cmTC_14d9e.dir/build.make:97: recipe for target 'cmTC_14d9e' failed
make[2]: *** [cmTC_14d9e] Error 1
make[2]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-1/output/build/synergy-v2.0.12-beta/CMakeFiles/CMakeTmp'
Makefile:126: recipe for target 'cmTC_14d9e/fast' failed
make[1]: *** [cmTC_14d9e/fast] Error 2
make[1]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-1/output/build/synergy-v2.0.12-beta/CMakeFiles/CMakeTmp'