cmake HAVE_SANITIZER examples

ucla-vision/xivo thirdparty/ceres-solver/cmake/EnableSanitizer.cmake :82 

check_cxx_compiler_flag(${SANITIZER_FLAG} HAVE_SANITIZER)

lpereira/lwan src/cmake/TrySanitizer.cmake :7 

check_c_compiler_flag(${SANITIZER_FLAG} HAVE_SANITIZER)

lpereira/lwan src/cmake/TrySanitizer.cmake :20 

unset(HAVE_SANITIZER)