CMake Cookbook

Getting ready

This recipe will show how to use the check_<lang>_source_compiles function from the corresponding Check<LANG>SourceCompiles.cmake standard module, in order to assess whether the given compiler can compile a predefined code snippet into an executable. The command can help you ascertain whether:

• Your compiler supports desired features.
• The linker works properly and understands specific flags.
• Include directories and libraries found using find_package are usable.

In this recipe, we will show how to detect the task loop feature of the OpenMP 4.5 standard for its use in a C++ executable. We will use a sample C++ source file to probe whether the compiler supports such a feature. CMake offers an additional command, try_compile, to ...