mirror of
https://github.com/crystalidea/qt-build-tools.git
synced 2024-11-30 07:11:59 +08:00
54 lines
2.0 KiB
CMake
54 lines
2.0 KiB
CMake
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
|
|
# file Copyright.txt or https://cmake.org/licensing for details.
|
|
|
|
#[=======================================================================[.rst:
|
|
CheckCSourceCompiles
|
|
--------------------
|
|
|
|
Check if given C source compiles and links into an executable.
|
|
|
|
.. command:: check_c_source_compiles
|
|
|
|
.. code-block:: cmake
|
|
|
|
check_c_source_compiles(<code> <resultVar>
|
|
[FAIL_REGEX <regex1> [<regex2>...]])
|
|
|
|
Check that the source supplied in ``<code>`` can be compiled as a C source
|
|
file and linked as an executable (so it must contain at least a ``main()``
|
|
function). The result will be stored in the internal cache variable specified
|
|
by ``<resultVar>``, with a boolean true value for success and boolean false
|
|
for failure. If ``FAIL_REGEX`` is provided, then failure is determined by
|
|
checking if anything in the output matches any of the specified regular
|
|
expressions.
|
|
|
|
The check is only performed once, with the result cached in the variable named
|
|
by ``<resultVar>``. Every subsequent CMake run will re-use 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_compiles()``:
|
|
|
|
.. 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/CheckSourceCompiles)
|
|
|
|
macro(CHECK_C_SOURCE_COMPILES SOURCE VAR)
|
|
cmake_check_source_compiles(C "${SOURCE}" ${VAR} ${ARGN})
|
|
endmacro()
|