Edit File: CheckCXXCompilerFlag.cmake
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying # file Copyright.txt or https://cmake.org/licensing for details. #[=======================================================================[.rst: CheckCXXCompilerFlag ------------------------ Check whether the CXX compiler supports a given flag. .. command:: check_cxx_compiler_flag .. code-block:: cmake check_cxx_compiler_flag(<flag> <var>) Check that the ``<flag>`` is accepted by the compiler without a diagnostic. Stores the result in an internal cache entry named ``<var>``. This command temporarily sets the ``CMAKE_REQUIRED_DEFINITIONS`` variable and calls the ``check_cxx_source_compiles`` macro from the :module:`CheckCXXSourceCompiles` module. See documentation of that module for a listing of variables that can otherwise modify the build. A positive result from this check indicates only that the compiler did not issue a diagnostic message when given the flag. Whether the flag has any effect or even a specific one is beyond the scope of this module. .. note:: Since the :command:`try_compile` command forwards flags from variables like :variable:`CMAKE_CXX_FLAGS <CMAKE_<LANG>_FLAGS>`, unknown flags in such variables may cause a false negative for this check. #]=======================================================================] include_guard(GLOBAL) include(CheckCXXSourceCompiles) include(Internal/CheckCompilerFlag) macro (CHECK_CXX_COMPILER_FLAG _FLAG _RESULT) cmake_check_compiler_flag(CXX "${_FLAG}" ${_RESULT}) endmacro ()
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