mirror of
https://github.com/crystalidea/qt-build-tools.git
synced 2024-11-30 07:11:59 +08:00
79 lines
2.5 KiB
CMake
79 lines
2.5 KiB
CMake
|
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
|
||
|
|
# file Copyright.txt or https://cmake.org/licensing for details.
|
||
|
|
|
||
|
|
|
||
|
|
#[=======================================================================[.rst:
|
||
|
|
CheckSourceRuns
|
||
|
|
-------------------
|
||
|
|
|
||
|
|
.. versionadded:: 3.19
|
||
|
|
|
||
|
|
Check if given source compiles and links into an executable and can
|
||
|
|
subsequently be run.
|
||
|
|
|
||
|
|
.. command:: check_source_runs
|
||
|
|
|
||
|
|
.. code-block:: cmake
|
||
|
|
|
||
|
|
check_source_runs(<lang> <code> <resultVar>
|
||
|
|
[SRC_EXT <extension>])
|
||
|
|
|
||
|
|
Check that the source supplied in ``<code>`` can be compiled as a source
|
||
|
|
file for the requested language, linked as an executable and then run.
|
||
|
|
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
|
||
|
|
a value that evaluates to boolean false (e.g. an empty string or an error
|
||
|
|
message).
|
||
|
|
|
||
|
|
By default, the test source file will be given a file extension that matches
|
||
|
|
the requested language. The ``SRC_EXT`` option can be used to override this
|
||
|
|
with ``.<extension>`` instead.
|
||
|
|
|
||
|
|
The ``<code>`` must contain a valid main program. For example:
|
||
|
|
|
||
|
|
.. code-block:: cmake
|
||
|
|
|
||
|
|
check_source_runs(C
|
||
|
|
"#include <stdlib.h>
|
||
|
|
#include <stdnoreturn.h>
|
||
|
|
noreturn void f(){ exit(0); }
|
||
|
|
int main(void) { f(); return 1; }"
|
||
|
|
HAVE_NORETURN)
|
||
|
|
|
||
|
|
check_source_runs(Fortran
|
||
|
|
"program test
|
||
|
|
real :: x[*]
|
||
|
|
call co_sum(x)
|
||
|
|
end program"
|
||
|
|
HAVE_COARRAY)
|
||
|
|
|
||
|
|
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_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)
|
||
|
|
|
||
|
|
function(CHECK_SOURCE_RUNS _lang _source _var)
|
||
|
|
cmake_check_source_runs(${_lang} "${_source}" ${_var} ${ARGN})
|
||
|
|
endfunction()
|