https://github.com/Kitware/CMake
Tip revision: 965acca98c1f8b3c511589a4a455df2b12bc2b8e authored by Brad King on 04 March 2024, 18:58:26 UTC
CMake 3.29.0-rc3
CMake 3.29.0-rc3
Tip revision: 965acca
CheckCSourceRuns.cmake
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
#[=======================================================================[.rst:
CheckCSourceRuns
----------------
Check if given C source compiles and links into an executable and can
subsequently be run.
.. command:: check_c_source_runs
.. code-block:: cmake
check_c_source_runs(<code> <resultVar>)
Check that the source supplied in ``<code>`` can be compiled as a C source
file, linked as an executable and then run. The ``<code>`` must contain at
least a ``main()`` function. If the ``<code>`` could be built and run
successfully, the internal cache variable specified by ``<resultVar>`` will
be set to 1, otherwise it will be set to an value that evaluates to boolean
false (e.g. an empty string or an error message).
The check is only performed once, with the result cached in the variable named
by ``<resultVar>``. Every subsequent CMake run will reuse this cached value
rather than performing the check again, even if the ``<code>`` changes. In
order to force the check to be re-evaluated, the variable named by
``<resultVar>`` must be manually removed from the cache.
The compile and link commands can be influenced by setting any of the
following variables prior to calling ``check_c_source_runs()``:
.. include:: /module/CMAKE_REQUIRED_FLAGS.txt
.. include:: /module/CMAKE_REQUIRED_DEFINITIONS.txt
.. include:: /module/CMAKE_REQUIRED_INCLUDES.txt
.. include:: /module/CMAKE_REQUIRED_LINK_OPTIONS.txt
.. include:: /module/CMAKE_REQUIRED_LIBRARIES.txt
.. include:: /module/CMAKE_REQUIRED_QUIET.txt
#]=======================================================================]
include_guard(GLOBAL)
include(Internal/CheckSourceRuns)
macro(CHECK_C_SOURCE_RUNS SOURCE VAR)
set(_CheckSourceRuns_old_signature 1)
cmake_check_source_runs(C "${SOURCE}" ${VAR} ${ARGN})
unset(_CheckSourceRuns_old_signature)
endmacro()