Performing C++ SOURCE FILE Test CC_HAS_STACK_REALIGN failed with the following output:
Change Dir: /home/rclinux/rc-buildroot-test/scripts/instance-0/output/build/x265-2.8/source/CMakeFiles/CMakeTmp

Run Build Command:"/usr/bin/make" "cmTC_d6c45/fast"
make[1]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output/build/x265-2.8/source/CMakeFiles/CMakeTmp'
/usr/bin/make -f CMakeFiles/cmTC_d6c45.dir/build.make CMakeFiles/cmTC_d6c45.dir/build
make[2]: Entering directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output/build/x265-2.8/source/CMakeFiles/CMakeTmp'
Building CXX object CMakeFiles/cmTC_d6c45.dir/src.cxx.o
/home/rclinux/rc-buildroot-test/scripts/instance-0/output/host/bin/arc-buildroot-linux-uclibc-g++  --sysroot=/home/rclinux/rc-buildroot-test/scripts/instance-0/output/host/arc-buildroot-linux-uclibc/sysroot    -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -matomic -Os -DCC_HAS_STACK_REALIGN  -DNDEBUG   -mstackrealign -o CMakeFiles/cmTC_d6c45.dir/src.cxx.o -c /home/rclinux/rc-buildroot-test/scripts/instance-0/output/build/x265-2.8/source/CMakeFiles/CMakeTmp/src.cxx
arc-buildroot-linux-uclibc-g++.br_real: error: unrecognized command line option '-mstackrealign'
CMakeFiles/cmTC_d6c45.dir/build.make:65: recipe for target 'CMakeFiles/cmTC_d6c45.dir/src.cxx.o' failed
make[2]: *** [CMakeFiles/cmTC_d6c45.dir/src.cxx.o] Error 1
make[2]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output/build/x265-2.8/source/CMakeFiles/CMakeTmp'
Makefile:126: recipe for target 'cmTC_d6c45/fast' failed
make[1]: *** [cmTC_d6c45/fast] Error 2
make[1]: Leaving directory '/home/rclinux/rc-buildroot-test/scripts/instance-0/output/build/x265-2.8/source/CMakeFiles/CMakeTmp'

Source file was:
int main() { return 0; }