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
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
|
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
#[=======================================================================[.rst:
FindPackageHandleStandardArgs
-----------------------------
This module provides functions intended to be used in :ref:`Find Modules`
implementing :command:`find_package(<PackageName>)` calls.
.. command:: find_package_handle_standard_args
This command handles the ``REQUIRED``, ``QUIET`` and version-related
arguments of :command:`find_package`. It also sets the
``<PackageName>_FOUND`` variable. The package is considered found if all
variables listed contain valid results, e.g. valid filepaths.
There are two signatures:
.. code-block:: cmake
find_package_handle_standard_args(<PackageName>
(DEFAULT_MSG|<custom-failure-message>)
<required-var>...
)
find_package_handle_standard_args(<PackageName>
[FOUND_VAR <result-var>]
[REQUIRED_VARS <required-var>...]
[VERSION_VAR <version-var>]
[HANDLE_VERSION_RANGE]
[HANDLE_COMPONENTS]
[CONFIG_MODE]
[NAME_MISMATCHED]
[REASON_FAILURE_MESSAGE <reason-failure-message>]
[FAIL_MESSAGE <custom-failure-message>]
)
The ``<PackageName>_FOUND`` variable will be set to ``TRUE`` if all
the variables ``<required-var>...`` are valid and any optional
constraints are satisfied, and ``FALSE`` otherwise. A success or
failure message may be displayed based on the results and on
whether the ``REQUIRED`` and/or ``QUIET`` option was given to
the :command:`find_package` call.
The options are:
``(DEFAULT_MSG|<custom-failure-message>)``
In the simple signature this specifies the failure message.
Use ``DEFAULT_MSG`` to ask for a default message to be computed
(recommended). Not valid in the full signature.
``FOUND_VAR <result-var>``
.. deprecated:: 3.3
Specifies either ``<PackageName>_FOUND`` or
``<PACKAGENAME>_FOUND`` as the result variable. This exists only
for compatibility with older versions of CMake and is now ignored.
Result variables of both names are always set for compatibility.
``REQUIRED_VARS <required-var>...``
Specify the variables which are required for this package.
These may be named in the generated failure message asking the
user to set the missing variable values. Therefore these should
typically be cache entries such as ``FOO_LIBRARY`` and not output
variables like ``FOO_LIBRARIES``.
.. versionchanged:: 3.18
If ``HANDLE_COMPONENTS`` is specified, this option can be omitted.
``VERSION_VAR <version-var>``
Specify the name of a variable that holds the version of the package
that has been found. This version will be checked against the
(potentially) specified required version given to the
:command:`find_package` call, including its ``EXACT`` option.
The default messages include information about the required
version and the version which has been actually found, both
if the version is ok or not.
``HANDLE_VERSION_RANGE``
.. versionadded:: 3.19
Enable handling of a version range, if one is specified. Without this
option, a developer warning will be displayed if a version range is
specified.
``HANDLE_COMPONENTS``
Enable handling of package components. In this case, the command
will report which components have been found and which are missing,
and the ``<PackageName>_FOUND`` variable will be set to ``FALSE``
if any of the required components (i.e. not the ones listed after
the ``OPTIONAL_COMPONENTS`` option of :command:`find_package`) are
missing.
``CONFIG_MODE``
Specify that the calling find module is a wrapper around a
call to ``find_package(<PackageName> NO_MODULE)``. This implies
a ``VERSION_VAR`` value of ``<PackageName>_VERSION``. The command
will automatically check whether the package configuration file
was found.
``REASON_FAILURE_MESSAGE <reason-failure-message>``
.. versionadded:: 3.16
Specify a custom message of the reason for the failure which will be
appended to the default generated message.
``FAIL_MESSAGE <custom-failure-message>``
Specify a custom failure message instead of using the default
generated message. Not recommended.
``NAME_MISMATCHED``
.. versionadded:: 3.17
Indicate that the ``<PackageName>`` does not match
``${CMAKE_FIND_PACKAGE_NAME}``. This is usually a mistake and raises a
warning, but it may be intentional for usage of the command for components
of a larger package.
Example for the simple signature:
.. code-block:: cmake
find_package_handle_standard_args(LibXml2 DEFAULT_MSG
LIBXML2_LIBRARY LIBXML2_INCLUDE_DIR)
The ``LibXml2`` package is considered to be found if both
``LIBXML2_LIBRARY`` and ``LIBXML2_INCLUDE_DIR`` are valid.
Then also ``LibXml2_FOUND`` is set to ``TRUE``. If it is not found
and ``REQUIRED`` was used, it fails with a
:command:`message(FATAL_ERROR)`, independent whether ``QUIET`` was
used or not. If it is found, success will be reported, including
the content of the first ``<required-var>``. On repeated CMake runs,
the same message will not be printed again.
.. note::
If ``<PackageName>`` does not match ``CMAKE_FIND_PACKAGE_NAME`` for the
calling module, a warning that there is a mismatch is given. The
``FPHSA_NAME_MISMATCHED`` variable may be set to bypass the warning if using
the old signature and the ``NAME_MISMATCHED`` argument using the new
signature. To avoid forcing the caller to require newer versions of CMake for
usage, the variable's value will be used if defined when the
``NAME_MISMATCHED`` argument is not passed for the new signature (but using
both is an error)..
Example for the full signature:
.. code-block:: cmake
find_package_handle_standard_args(LibArchive
REQUIRED_VARS LibArchive_LIBRARY LibArchive_INCLUDE_DIR
VERSION_VAR LibArchive_VERSION)
In this case, the ``LibArchive`` package is considered to be found if
both ``LibArchive_LIBRARY`` and ``LibArchive_INCLUDE_DIR`` are valid.
Also the version of ``LibArchive`` will be checked by using the version
contained in ``LibArchive_VERSION``. Since no ``FAIL_MESSAGE`` is given,
the default messages will be printed.
Another example for the full signature:
.. code-block:: cmake
find_package(Automoc4 QUIET NO_MODULE HINTS /opt/automoc4)
find_package_handle_standard_args(Automoc4 CONFIG_MODE)
In this case, a ``FindAutmoc4.cmake`` module wraps a call to
``find_package(Automoc4 NO_MODULE)`` and adds an additional search
directory for ``automoc4``. Then the call to
``find_package_handle_standard_args`` produces a proper success/failure
message.
.. command:: find_package_check_version
.. versionadded:: 3.19
Helper function which can be used to check if a ``<version>`` is valid
against version-related arguments of :command:`find_package`.
.. code-block:: cmake
find_package_check_version(<version> <result-var>
[HANDLE_VERSION_RANGE]
[RESULT_MESSAGE_VARIABLE <message-var>]
)
The ``<result-var>`` will hold a boolean value giving the result of the check.
The options are:
``HANDLE_VERSION_RANGE``
Enable handling of a version range, if one is specified. Without this
option, a developer warning will be displayed if a version range is
specified.
``RESULT_MESSAGE_VARIABLE <message-var>``
Specify a variable to get back a message describing the result of the check.
Example for the usage:
.. code-block:: cmake
find_package_check_version(1.2.3 result HANDLE_VERSION_RANGE
RESULT_MESSAGE_VARIABLE reason)
if (result)
message (STATUS "${reason}")
else()
message (FATAL_ERROR "${reason}")
endif()
#]=======================================================================]
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageMessage.cmake)
cmake_policy(PUSH)
# numbers and boolean constants
cmake_policy (SET CMP0012 NEW)
# IN_LIST operator
cmake_policy (SET CMP0057 NEW)
# internal helper macro
macro(_FPHSA_FAILURE_MESSAGE _msg)
set (__msg "${_msg}")
if (FPHSA_REASON_FAILURE_MESSAGE)
string(APPEND __msg "\n Reason given by package: ${FPHSA_REASON_FAILURE_MESSAGE}\n")
endif()
if (${_NAME}_FIND_REQUIRED)
message(FATAL_ERROR "${__msg}")
else ()
if (NOT ${_NAME}_FIND_QUIETLY)
message(STATUS "${__msg}")
endif ()
endif ()
endmacro()
# internal helper macro to generate the failure message when used in CONFIG_MODE:
macro(_FPHSA_HANDLE_FAILURE_CONFIG_MODE)
# <PackageName>_CONFIG is set, but FOUND is false, this means that some other of the REQUIRED_VARS was not found:
if(${_NAME}_CONFIG)
_FPHSA_FAILURE_MESSAGE("${FPHSA_FAIL_MESSAGE}: missing:${MISSING_VARS} (found ${${_NAME}_CONFIG} ${VERSION_MSG})")
else()
# If _CONSIDERED_CONFIGS is set, the config-file has been found, but no suitable version.
# List them all in the error message:
if(${_NAME}_CONSIDERED_CONFIGS)
set(configsText "")
list(LENGTH ${_NAME}_CONSIDERED_CONFIGS configsCount)
math(EXPR configsCount "${configsCount} - 1")
foreach(currentConfigIndex RANGE ${configsCount})
list(GET ${_NAME}_CONSIDERED_CONFIGS ${currentConfigIndex} filename)
list(GET ${_NAME}_CONSIDERED_VERSIONS ${currentConfigIndex} version)
string(APPEND configsText "\n ${filename} (version ${version})")
endforeach()
if (${_NAME}_NOT_FOUND_MESSAGE)
if (FPHSA_REASON_FAILURE_MESSAGE)
string(PREPEND FPHSA_REASON_FAILURE_MESSAGE "${${_NAME}_NOT_FOUND_MESSAGE}\n ")
else()
set(FPHSA_REASON_FAILURE_MESSAGE "${${_NAME}_NOT_FOUND_MESSAGE}")
endif()
else()
string(APPEND configsText "\n")
endif()
_FPHSA_FAILURE_MESSAGE("${FPHSA_FAIL_MESSAGE} ${VERSION_MSG}, checked the following files:${configsText}")
else()
# Simple case: No Config-file was found at all:
_FPHSA_FAILURE_MESSAGE("${FPHSA_FAIL_MESSAGE}: found neither ${_NAME}Config.cmake nor ${_NAME_LOWER}-config.cmake ${VERSION_MSG}")
endif()
endif()
endmacro()
function(FIND_PACKAGE_CHECK_VERSION version result)
cmake_parse_arguments (PARSE_ARGV 2 FPCV "HANDLE_VERSION_RANGE;NO_AUTHOR_WARNING_VERSION_RANGE" "RESULT_MESSAGE_VARIABLE" "")
if (FPCV_UNPARSED_ARGUMENTS)
message (FATAL_ERROR "find_package_check_version(): ${FPCV_UNPARSED_ARGUMENTS}: unexpected arguments")
endif()
if ("RESULT_MESSAGE_VARIABLE" IN_LIST FPCV_KEYWORDS_MISSING_VALUES)
message (FATAL_ERROR "find_package_check_version(): RESULT_MESSAGE_VARIABLE expects an argument")
endif()
set (${result} FALSE PARENT_SCOPE)
if (FPCV_RESULT_MESSAGE_VARIABLE)
unset (${FPCV_RESULT_MESSAGE_VARIABLE} PARENT_SCOPE)
endif()
if (_CMAKE_FPHSA_PACKAGE_NAME)
set (package "${_CMAKE_FPHSA_PACKAGE_NAME}")
elseif (CMAKE_FIND_PACKAGE_NAME)
set (package "${CMAKE_FIND_PACKAGE_NAME}")
else()
message (FATAL_ERROR "find_package_check_version(): Cannot be used outside a 'Find Module'")
endif()
if (NOT FPCV_NO_AUTHOR_WARNING_VERSION_RANGE
AND ${package}_FIND_VERSION_RANGE AND NOT FPCV_HANDLE_VERSION_RANGE)
message(AUTHOR_WARNING
"`find_package()` specify a version range but the option "
"HANDLE_VERSION_RANGE` is not passed to `find_package_check_version()`. "
"Only the lower endpoint of the range will be used.")
endif()
set (version_ok FALSE)
unset (version_msg)
if (FPCV_HANDLE_VERSION_RANGE AND ${package}_FIND_VERSION_RANGE)
if ((${package}_FIND_VERSION_RANGE_MIN STREQUAL "INCLUDE"
AND version VERSION_GREATER_EQUAL ${package}_FIND_VERSION_MIN)
AND ((${package}_FIND_VERSION_RANGE_MAX STREQUAL "INCLUDE"
AND version VERSION_LESS_EQUAL ${package}_FIND_VERSION_MAX)
OR (${package}_FIND_VERSION_RANGE_MAX STREQUAL "EXCLUDE"
AND version VERSION_LESS ${package}_FIND_VERSION_MAX)))
set (version_ok TRUE)
set(version_msg "(found suitable version \"${version}\", required range is \"${${package}_FIND_VERSION_RANGE}\")")
else()
set(version_msg "Found unsuitable version \"${version}\", required range is \"${${package}_FIND_VERSION_RANGE}\"")
endif()
elseif (DEFINED ${package}_FIND_VERSION)
if(${package}_FIND_VERSION_EXACT) # exact version required
# count the dots in the version string
string(REGEX REPLACE "[^.]" "" version_dots "${version}")
# add one dot because there is one dot more than there are components
string(LENGTH "${version_dots}." version_dots)
if (version_dots GREATER ${package}_FIND_VERSION_COUNT)
# Because of the C++ implementation of find_package() ${package}_FIND_VERSION_COUNT
# is at most 4 here. Therefore a simple lookup table is used.
if (${package}_FIND_VERSION_COUNT EQUAL 1)
set(version_regex "[^.]*")
elseif (${package}_FIND_VERSION_COUNT EQUAL 2)
set(version_regex "[^.]*\\.[^.]*")
elseif (${package}_FIND_VERSION_COUNT EQUAL 3)
set(version_regex "[^.]*\\.[^.]*\\.[^.]*")
else()
set(version_regex "[^.]*\\.[^.]*\\.[^.]*\\.[^.]*")
endif()
string(REGEX REPLACE "^(${version_regex})\\..*" "\\1" version_head "${version}")
if (NOT ${package}_FIND_VERSION VERSION_EQUAL version_head)
set(version_msg "Found unsuitable version \"${version}\", but required is exact version \"${${package}_FIND_VERSION}\"")
else ()
set(version_ok TRUE)
set(version_msg "(found suitable exact version \"${version}\")")
endif ()
else ()
if (NOT ${package}_FIND_VERSION VERSION_EQUAL version)
set(version_msg "Found unsuitable version \"${version}\", but required is exact version \"${${package}_FIND_VERSION}\"")
else ()
set(version_ok TRUE)
set(version_msg "(found suitable exact version \"${version}\")")
endif ()
endif ()
else() # minimum version
if (${package}_FIND_VERSION VERSION_GREATER version)
set(version_msg "Found unsuitable version \"${version}\", but required is at least \"${${package}_FIND_VERSION}\"")
else()
set(version_ok TRUE)
set(version_msg "(found suitable version \"${version}\", minimum required is \"${${package}_FIND_VERSION}\")")
endif()
endif()
else ()
set(version_ok TRUE)
set(version_msg "(found version \"${version}\")")
endif()
set (${result} ${version_ok} PARENT_SCOPE)
if (FPCV_RESULT_MESSAGE_VARIABLE)
set (${FPCV_RESULT_MESSAGE_VARIABLE} "${version_msg}" PARENT_SCOPE)
endif()
endfunction()
function(FIND_PACKAGE_HANDLE_STANDARD_ARGS _NAME _FIRST_ARG)
# Set up the arguments for `cmake_parse_arguments`.
set(options CONFIG_MODE HANDLE_COMPONENTS NAME_MISMATCHED HANDLE_VERSION_RANGE)
set(oneValueArgs FAIL_MESSAGE REASON_FAILURE_MESSAGE VERSION_VAR FOUND_VAR)
set(multiValueArgs REQUIRED_VARS)
# Check whether we are in 'simple' or 'extended' mode:
set(_KEYWORDS_FOR_EXTENDED_MODE ${options} ${oneValueArgs} ${multiValueArgs} )
list(FIND _KEYWORDS_FOR_EXTENDED_MODE "${_FIRST_ARG}" INDEX)
unset(FPHSA_NAME_MISMATCHED_override)
if (DEFINED FPHSA_NAME_MISMATCHED)
# If the variable NAME_MISMATCHED variable is set, error if it is passed as
# an argument. The former is for old signatures, the latter is for new
# signatures.
list(FIND ARGN "NAME_MISMATCHED" name_mismatched_idx)
if (NOT name_mismatched_idx EQUAL "-1")
message(FATAL_ERROR
"The `NAME_MISMATCHED` argument may only be specified by the argument or "
"the variable, not both.")
endif ()
# But use the variable if it is not an argument to avoid forcing minimum
# CMake version bumps for calling modules.
set(FPHSA_NAME_MISMATCHED_override "${FPHSA_NAME_MISMATCHED}")
endif ()
if(${INDEX} EQUAL -1)
set(FPHSA_FAIL_MESSAGE ${_FIRST_ARG})
set(FPHSA_REQUIRED_VARS ${ARGN})
set(FPHSA_VERSION_VAR)
else()
cmake_parse_arguments(FPHSA "${options}" "${oneValueArgs}" "${multiValueArgs}" ${_FIRST_ARG} ${ARGN})
if(FPHSA_UNPARSED_ARGUMENTS)
message(FATAL_ERROR "Unknown keywords given to FIND_PACKAGE_HANDLE_STANDARD_ARGS(): \"${FPHSA_UNPARSED_ARGUMENTS}\"")
endif()
if(NOT FPHSA_FAIL_MESSAGE)
set(FPHSA_FAIL_MESSAGE "DEFAULT_MSG")
endif()
# In config-mode, we rely on the variable <PackageName>_CONFIG, which is set by find_package()
# when it successfully found the config-file, including version checking:
if(FPHSA_CONFIG_MODE)
list(INSERT FPHSA_REQUIRED_VARS 0 ${_NAME}_CONFIG)
list(REMOVE_DUPLICATES FPHSA_REQUIRED_VARS)
set(FPHSA_VERSION_VAR ${_NAME}_VERSION)
endif()
if(NOT FPHSA_REQUIRED_VARS AND NOT FPHSA_HANDLE_COMPONENTS)
message(FATAL_ERROR "No REQUIRED_VARS specified for FIND_PACKAGE_HANDLE_STANDARD_ARGS()")
endif()
endif()
if (DEFINED FPHSA_NAME_MISMATCHED_override)
set(FPHSA_NAME_MISMATCHED "${FPHSA_NAME_MISMATCHED_override}")
endif ()
if (DEFINED CMAKE_FIND_PACKAGE_NAME
AND NOT FPHSA_NAME_MISMATCHED
AND NOT _NAME STREQUAL CMAKE_FIND_PACKAGE_NAME)
message(AUTHOR_WARNING
"The package name passed to `find_package_handle_standard_args` "
"(${_NAME}) does not match the name of the calling package "
"(${CMAKE_FIND_PACKAGE_NAME}). This can lead to problems in calling "
"code that expects `find_package` result variables (e.g., `_FOUND`) "
"to follow a certain pattern.")
endif ()
if (${_NAME}_FIND_VERSION_RANGE AND NOT FPHSA_HANDLE_VERSION_RANGE)
message(AUTHOR_WARNING
"`find_package()` specify a version range but the module ${_NAME} does "
"not support this capability. Only the lower endpoint of the range "
"will be used.")
endif()
# to propagate package name to FIND_PACKAGE_CHECK_VERSION
set(_CMAKE_FPHSA_PACKAGE_NAME "${_NAME}")
# now that we collected all arguments, process them
if("x${FPHSA_FAIL_MESSAGE}" STREQUAL "xDEFAULT_MSG")
set(FPHSA_FAIL_MESSAGE "Could NOT find ${_NAME}")
endif()
if (FPHSA_REQUIRED_VARS)
list(GET FPHSA_REQUIRED_VARS 0 _FIRST_REQUIRED_VAR)
endif()
string(TOUPPER ${_NAME} _NAME_UPPER)
string(TOLOWER ${_NAME} _NAME_LOWER)
if(FPHSA_FOUND_VAR)
set(_FOUND_VAR_UPPER ${_NAME_UPPER}_FOUND)
set(_FOUND_VAR_MIXED ${_NAME}_FOUND)
if(FPHSA_FOUND_VAR STREQUAL _FOUND_VAR_MIXED OR FPHSA_FOUND_VAR STREQUAL _FOUND_VAR_UPPER)
set(_FOUND_VAR ${FPHSA_FOUND_VAR})
else()
message(FATAL_ERROR "The argument for FOUND_VAR is \"${FPHSA_FOUND_VAR}\", but only \"${_FOUND_VAR_MIXED}\" and \"${_FOUND_VAR_UPPER}\" are valid names.")
endif()
else()
set(_FOUND_VAR ${_NAME_UPPER}_FOUND)
endif()
# collect all variables which were not found, so they can be printed, so the
# user knows better what went wrong (#6375)
set(MISSING_VARS "")
set(DETAILS "")
# check if all passed variables are valid
set(FPHSA_FOUND_${_NAME} TRUE)
foreach(_CURRENT_VAR ${FPHSA_REQUIRED_VARS})
if(NOT ${_CURRENT_VAR})
set(FPHSA_FOUND_${_NAME} FALSE)
string(APPEND MISSING_VARS " ${_CURRENT_VAR}")
else()
string(APPEND DETAILS "[${${_CURRENT_VAR}}]")
endif()
endforeach()
if(FPHSA_FOUND_${_NAME})
set(${_NAME}_FOUND TRUE)
set(${_NAME_UPPER}_FOUND TRUE)
else()
set(${_NAME}_FOUND FALSE)
set(${_NAME_UPPER}_FOUND FALSE)
endif()
# component handling
unset(FOUND_COMPONENTS_MSG)
unset(MISSING_COMPONENTS_MSG)
if(FPHSA_HANDLE_COMPONENTS)
foreach(comp ${${_NAME}_FIND_COMPONENTS})
if(${_NAME}_${comp}_FOUND)
if(NOT DEFINED FOUND_COMPONENTS_MSG)
set(FOUND_COMPONENTS_MSG "found components:")
endif()
string(APPEND FOUND_COMPONENTS_MSG " ${comp}")
else()
if(NOT DEFINED MISSING_COMPONENTS_MSG)
set(MISSING_COMPONENTS_MSG "missing components:")
endif()
string(APPEND MISSING_COMPONENTS_MSG " ${comp}")
if(${_NAME}_FIND_REQUIRED_${comp})
set(${_NAME}_FOUND FALSE)
string(APPEND MISSING_VARS " ${comp}")
endif()
endif()
endforeach()
set(COMPONENT_MSG "${FOUND_COMPONENTS_MSG} ${MISSING_COMPONENTS_MSG}")
string(APPEND DETAILS "[c${COMPONENT_MSG}]")
endif()
# version handling:
set(VERSION_MSG "")
set(VERSION_OK TRUE)
# check that the version variable is not empty to avoid emitting a misleading
# message (i.e. `Found unsuitable version ""`)
if (DEFINED ${_NAME}_FIND_VERSION)
if(DEFINED ${FPHSA_VERSION_VAR})
if(NOT "${${FPHSA_VERSION_VAR}}" STREQUAL "")
set(_FOUND_VERSION ${${FPHSA_VERSION_VAR}})
if (FPHSA_HANDLE_VERSION_RANGE)
set (FPCV_HANDLE_VERSION_RANGE HANDLE_VERSION_RANGE)
else()
set(FPCV_HANDLE_VERSION_RANGE NO_AUTHOR_WARNING_VERSION_RANGE)
endif()
find_package_check_version ("${_FOUND_VERSION}" VERSION_OK RESULT_MESSAGE_VARIABLE VERSION_MSG
${FPCV_HANDLE_VERSION_RANGE})
else()
set(VERSION_OK FALSE)
endif()
endif()
if("${${FPHSA_VERSION_VAR}}" STREQUAL "")
# if the package was not found, but a version was given, add that to the output:
if(${_NAME}_FIND_VERSION_EXACT)
set(VERSION_MSG "(Required is exact version \"${${_NAME}_FIND_VERSION}\")")
elseif (FPHSA_HANDLE_VERSION_RANGE AND ${_NAME}_FIND_VERSION_RANGE)
set(VERSION_MSG "(Required is version range \"${${_NAME}_FIND_VERSION_RANGE}\")")
else()
set(VERSION_MSG "(Required is at least version \"${${_NAME}_FIND_VERSION}\")")
endif()
endif()
else ()
# Check with DEFINED as the found version may be 0.
if(DEFINED ${FPHSA_VERSION_VAR})
set(VERSION_MSG "(found version \"${${FPHSA_VERSION_VAR}}\")")
endif()
endif ()
if(VERSION_OK)
string(APPEND DETAILS "[v${${FPHSA_VERSION_VAR}}(${${_NAME}_FIND_VERSION})]")
else()
set(${_NAME}_FOUND FALSE)
endif()
# print the result:
if (${_NAME}_FOUND)
FIND_PACKAGE_MESSAGE(${_NAME} "Found ${_NAME}: ${${_FIRST_REQUIRED_VAR}} ${VERSION_MSG} ${COMPONENT_MSG}" "${DETAILS}")
else ()
if(FPHSA_CONFIG_MODE)
_FPHSA_HANDLE_FAILURE_CONFIG_MODE()
else()
if(NOT VERSION_OK)
set(RESULT_MSG)
if (_FIRST_REQUIRED_VAR)
string (APPEND RESULT_MSG "found ${${_FIRST_REQUIRED_VAR}}")
endif()
if (COMPONENT_MSG)
if (RESULT_MSG)
string (APPEND RESULT_MSG ", ")
endif()
string (APPEND RESULT_MSG "${FOUND_COMPONENTS_MSG}")
endif()
_FPHSA_FAILURE_MESSAGE("${FPHSA_FAIL_MESSAGE}: ${VERSION_MSG} (${RESULT_MSG})")
else()
_FPHSA_FAILURE_MESSAGE("${FPHSA_FAIL_MESSAGE} (missing:${MISSING_VARS}) ${VERSION_MSG}")
endif()
endif()
endif ()
set(${_NAME}_FOUND ${${_NAME}_FOUND} PARENT_SCOPE)
set(${_NAME_UPPER}_FOUND ${${_NAME}_FOUND} PARENT_SCOPE)
endfunction()
cmake_policy(POP)
|