cmake COMPILER_RT_HAS_GS_FLAG examples

Lewuathe/mlir-hello thirdparty/llvm-project/compiler-rt/cmake/config-ix.cmake :125 

check_cxx_compiler_flag(/GS COMPILER_RT_HAS_GS_FLAG)

trailofbits/polytracker polytracker/src/compiler-rt/cmake/config-ix.cmake :89 

check_cxx_compiler_flag(/GS COMPILER_RT_HAS_GS_FLAG)

CTSRD-CHERI/cheribsd contrib/subrepo-cheri-compiler-rt/cmake/config-ix.cmake :103 

check_cxx_compiler_flag(/GS COMPILER_RT_HAS_GS_FLAG)