| enable_language (OBJCXX) | |
| include(CheckCompilerFlag) | |
| check_compiler_flag(OBJCXX "-_this_is_not_a_flag_" SHOULD_FAIL) | |
| if(SHOULD_FAIL) | |
| message(SEND_ERROR "invalid OBJCXX compile flag didn't fail.") | |
| endif() | |
| check_compiler_flag(OBJCXX "-Wall" SHOULD_WORK) | |
| if(NOT SHOULD_WORK) | |
| message(SEND_ERROR "${CMAKE_OBJCXX_COMPILER_ID} compiler flag '-Wall' check failed") | |
| endif() |