https://github.com/Kitware/CMake
Tip revision: b5c54d9c8a1fdfdbf1a133040029a4924b69185e authored by Brad King on 25 July 2023, 17:58:09 UTC
CMake 3.27.1
CMake 3.27.1
Tip revision: b5c54d9
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>``.
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(Internal/CheckCompilerFlag)
macro (CHECK_CXX_COMPILER_FLAG _FLAG _RESULT)
cmake_check_compiler_flag(CXX "${_FLAG}" ${_RESULT})
endmacro ()
# FIXME(#24994): The following module is included only for compatibility
# with projects that accidentally relied on it with CMake 3.26 and below.
include(CheckCXXSourceCompiles)