1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file LICENSE.rst or https://cmake.org/licensing for details.
#[=======================================================================[.rst:
CheckFortranSourceCompiles
--------------------------
.. versionadded:: 3.1
This module provides a command to check whether a Fortran source can be
built.
Load this module in a CMake project with:
.. code-block:: cmake
include(CheckFortranSourceCompiles)
Commands
^^^^^^^^
This module provides the following command:
.. command:: check_fortran_source_compiles
Checks once whether the given Fortran source code can be built:
.. code-block:: cmake
check_fortran_source_compiles(
<code>
<variable>
[FAIL_REGEX <regexes>...]
[SRC_EXT <extension>]
)
This command checks once that the source supplied in ``<code>`` can be
compiled (and linked into an executable). The result of the check is
stored in the internal cache variable specified by ``<variable>``.
The arguments are:
``<code>``
Fortran source code to check. This must be an entire program, as
written in a file containing the body block. All symbols used in the
source code are expected to be declared as usual in their corresponding
headers.
``<variable>``
Variable name of an internal cache variable to store the result of the
check, with boolean true for success and boolean false for failure.
``FAIL_REGEX <regexes>...``
If this option is provided with one or more regular expressions, then
failure is determined by checking if anything in the compiler output
matches any of the specified regular expressions.
``SRC_EXT <extension>``
.. versionadded:: 3.7
By default, the test source file used for the check will be given a
``.F`` file extension. This option can be used to override this with
``.<extension>`` instead - ``.F90`` is a typical choice.
.. rubric:: Variables Affecting the Check
The following variables may be set before calling this command to modify
the way the check is run:
.. include:: /module/include/CMAKE_REQUIRED_FLAGS.rst
.. include:: /module/include/CMAKE_REQUIRED_DEFINITIONS.rst
.. include:: /module/include/CMAKE_REQUIRED_INCLUDES.rst
.. include:: /module/include/CMAKE_REQUIRED_LINK_OPTIONS.rst
.. include:: /module/include/CMAKE_REQUIRED_LIBRARIES.rst
.. include:: /module/include/CMAKE_REQUIRED_LINK_DIRECTORIES.rst
.. include:: /module/include/CMAKE_REQUIRED_QUIET.rst
.. include:: /module/include/CMAKE_TRY_COMPILE_TARGET_TYPE.rst
Examples
^^^^^^^^
Checking whether the Fortran compiler supports the ``pure`` procedure
attribute:
.. code-block:: cmake
include(CheckFortranSourceCompiles)
check_fortran_source_compiles("
pure subroutine foo()
end subroutine
program test
call foo()
end
" HAVE_PURE SRC_EXT "F90")
See Also
^^^^^^^^
* The :module:`CheckSourceCompiles` module for a more general command to
check whether source can be built.
* The :module:`CheckSourceRuns` module to check whether source can be built
and run.
#]=======================================================================]
include_guard(GLOBAL)
include(Internal/CheckSourceCompiles)
macro(CHECK_Fortran_SOURCE_COMPILES SOURCE VAR)
# Pass the SRC_EXT we used by default historically.
# A user-provided SRC_EXT argument in ARGN will override ours.
cmake_check_source_compiles(Fortran "${SOURCE}" ${VAR} SRC_EXT "F" ${ARGN})
endmacro()
|
