| enable_language (C CXX) | |
| include(CheckSourceCompiles) | |
| add_library(cxx_iface INTERFACE IMPORTED) | |
| target_compile_features(cxx_iface INTERFACE cxx_std_11) | |
| set(CMAKE_REQUIRED_LIBRARIES cxx_iface) | |
| check_source_compiles(C "int main() {return 0;}" SHOULD_BUILD) | |
| if(NOT SHOULD_BUILD) | |
| message(SEND_ERROR "Test fail for valid C source.") | |
| endif() |