cmake COMPILER_RT_HAS_STD_C11_FLAG examples

Lewuathe/mlir-hello thirdparty/llvm-project/compiler-rt/cmake/config-ix.cmake :92

check_c_compiler_flag(-std=c11               COMPILER_RT_HAS_STD_C11_FLAG)

trailofbits/polytracker polytracker/src/compiler-rt/cmake/config-ix.cmake :58

check_c_compiler_flag(-std=c11               COMPILER_RT_HAS_STD_C11_FLAG)

CTSRD-CHERI/cheribsd contrib/subrepo-cheri-compiler-rt/cmake/config-ix.cmake :70

check_c_compiler_flag(-std=c11               COMPILER_RT_HAS_STD_C11_FLAG)