| enable_language (C) | |
| include(CheckSourceRuns) | |
| # If CMAKE_REQUIRED_FLAGS is a list, all items but the first are passed as | |
| # arguments to 'cmake'. This was never supported, but arguments that start with | |
| # '-W' were silently ignored by CMake < 4.4. Starting with 4.4, CMake complains | |
| # about unknown warning flags. Therefore, for compatibility, we strip them. | |
| set(CMAKE_REQUIRED_FLAGS -DFOO -Wseen-by-cmake) | |
| check_source_runs(C "int main() {return 0;}" SHOULD_RUN) |