Differential D2854 Diff 8485 modules/ECMAddQCH.cmake

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1​#.rst:
2​# ECMAddQCH
3​# ------------------
4​#
5​# This module provides the ``ecm_add_qch`` function for generating API
6​# documentation files in the QCH format, and the ``ecm_install_qch_export``
7​# function for generating and installing exported CMake targets for such
8​# generated QCH files to enable builds of other software with generation of
9​# QCH files to create links into the given QCH files.
10​#
11​# ::
12​#
13​# ecm_add_qch(<name>
14​# OUTPUT_BASENAME <basename>
15​# VERSION <version>
16​# QCH_INSTALL_DESTINATION <qchfile_install_path>
17​# TAGFILE_INSTALL_DESTINATION <tagsfile_install_path>
18​# [SOURCE_DIRS <dir> [<dir2> [...]]]
19​# [SOURCES <file> [<file2> [...]]]
20​# |MD_MAINPAGE <md_file>]
21​# [IMAGE_DIRS <idir> [<idir2> [...]]]
22​# [EXAMPLE_DIRS <edir> [<edir2> [...]]]
23​# [ORG_DOMAIN <domain>]
24​# [NAMESPACE <namespace>]
25​# [LINK_QCH <qch> [<qch2> [...]]]
26​# [LINK_QCH_VERSIONED <qchv> [<qchv2> [...]]]
27​# [BLANK_MACROS <macro> [<macro2> [...]]]
28​# [CONFIG_TEMPLATE <configtemplate_file>]
29​# [VERBOSE]
30​# )
31​#
32​# This macro adds a target called <name> for the creation of an API
33​# documentation manual named ``<basename>.qch``in the QCH format from the
34​# given sources.
35​# It currently uses doxygen, future versions might optionally also allow other
36​# tools.
37​# Next to the QCH file the target will generate a corresponding doxygen tag
38​# file name ``<basename>.tags``, which enables creating links from other
39​# documentation into the generated QCH file.
40​#
41​# If the required tools are not found, the macro will skip creation of the
42​# target and only emit a warning, so the use of the macro can be introduced
43​# without requiring anyone to also have the needed tools present at that time.
44​# This behaviour might change in future versions to result in a fail instead.
45​# It is recommended to make the use of this macro optional, by depending
46​# the call to ``ecm_add_qch()`` on a CMake option being set, with a name like
47​# ``BUILD_QCH`` and being TRUE by default. This will allow the developers to
48​# saves resources on normal source development build cycles by setting this
49​# option to FALSE.
50​#
51​# The macro will set the target properties DOXYGEN_TAGFILE, QHP_NAMESPACE,
52​# QHP_NAMESPACE_VERSIONED and QHP_VIRTUALFOLDER to the respective values, to
53​# allow other code access to them, e.g. the macro ecm_install_qch_export().
54​# To enable the use of the target <name> as item for LINK_QCH or
55​# LINK_QCH_VERSIONED in further ``ecm_add_qch()`` calls in the current build,
56​# additionally a target property DOXYGEN_TAGFILE_BUILD is set, with the path
57​# of the created doxygen tag file in the build dir.
58​# If existing, ``ecm_add_qch()`` will use this property instead of
59​# DOXYGEN_TAGFILE for access to the tags file.
60​#
61​# OUTPUT_BASENAME specifies the base name for the generated documentation and
62​# the files.
63​#
64​# VERSION specifies the version of the library for which the documentation is
65​# created.
66​#
67​# SOURCE_DIRS specifies the dirs (incl. subdirs) with the source files for
68​# which the API documentation should be generated. Dirs can be relative to
69​# the current source dir. Dependencies to the files in the dirs are not
70​# tracked currently, other than with the SOURCES argument. So do not use for
71​# sources generated during the build.
72​# Needs to be used when SOURCES or CONFIG_TEMPLATE are not used.
73​#
74​# SOURCES specifies the source files for which the API documentation should be
75​# generated.
76​# Needs to be used when SOURCE_DIRS or CONFIG_TEMPLATE are not used.
77​#
78​# MD_MAINPAGE specifies a file in Markdown format that should be used as main
79​# page. This page will overrule any ``\mainpage`` command in the included
80​# sources.
81​#
82​# IMAGE_DIRS specifies the dirs which contain images that are included in the
83​# documentation. Dirs can be relative to the current source dir.
84​#
85​# EXAMPLE_DIRS specifies the dirs which contain examples that are included in
86​# the documentation. Dirs can be relative to the current source dir.
87​#
88​# QCH_INSTALL_DESTINATION specifies where the generated QCH file will be
89​# installed.
90​#
91​# TAGFILE_INSTALL_DESTINATION specifies where the generated tag file will be
92​# installed.
93​#
94​# NAMESPACE can be used to set a custom namespace <namespace> of the generated
95​# QCH file. The namepspace is used as the unique id by QHelpEngine (cmp.
96​# http://doc.qt.io/qt-5/qthelpproject.html#namespace).
97​# The default namespace is ``<domain>.<basename>``.
98​# Needs to be used when ORG_DOMAIN is not used.
99​#
100​# ORG_DOMAIN can be used to define the organization domain prefix for the
101​# default namespace of the generated QCH file.
102​# Needs to be used when NAMESPACE is not used.
103​#
104​# LINK_QCH specifies a list of other QCH targets which should be used for
105​# creating references to API documenation of code in external libraries.
106​# For each target <qch> in the list these target properties are expected to be
107​# defined: DOXYGEN_TAGFILE, QHP_NAMESPACE and QHP_VIRTUALFOLDER.
108​# If any of these is not existing, <qch> will be ignored.
109​# Use the macro ecm_install_qch_export for exporting a target with these
110​# properties with the CMake config of a library.
111​# Any target <qch> can also be one created before in the same buildsystem by
112​# another call of ``ecm_add_qch()``.
113​#
114​# LINK_QCH_VERSIONED does basically the same as LINK_QCH, but binds the links
115​# to a certain version.
116​# For each <qchv> in the list these target properties are expected to be
117​# defined: DOXYGEN_TAGFILE, QHP_NAMESPACE_VERSIONED and QHP_VIRTUALFOLDER.
118​# If any of these is not existing, <qchv> will be ignored.
119​# Use the macro ecm_install_qch_export for exporting a target with these
120​# properties with the CMake config of a library.
121​# Any <qchv> can also be one created before in the same buildsystem by another
122​# call of ``ecm_add_qch()``.
123​#
124​# BLANK_MACROS specifies a list of C/C++ macro names which should be ignored by
125​# the API dox generation tool and handled as if they resolve to empty strings.
126​# Examples are export macros only defined in generated files, so whose
127​# definition might be not available to the tool.
128​#
129​# CONFIG_TEMPLATE specifies a custom cmake template file for the config file
130​# that is created to control the execution of the API dox generation tool.
131​# The following CMake variables need to be used:
132​# ECM_DOXYGENQCH_PERL_EXECUTABLE, ECM_DOXYGENQCH_QHELPGENERATOR_EXECUTABLE,
133​# ECM_DOXYGENQCH_FILEPATH, ECM_DOXYGENQCH_TAGFILE.
134​# The following CMake variables can be used:
135​# ECM_DOXYGENQCH_PROJECTNAME, ECM_DOXYGENQCH_PROJECTVERSION,
136​# ECM_DOXYGENQCH_VIRTUALFOLDER, ECM_DOXYGENQCH_FULLNAMESPACE,
137​# ECM_DOXYGENQCH_TAGFILES,
138​# ECM_DOXYGENQCH_WARN_LOGFILE, ECM_DOXYGENQCH_QUIET.
139​# There is no guarantue that the other CMake variables currently used in the
140​# default config file template will also be present with the same semantics
141​# in future versions of this macro.
142​#
143​# VERBOSE tells the API dox generation tool to be more verbose about its
144​# activity.
145​#
146​# Example usage:
147​#
148​# .. code-block:: cmake
149​#
150​# ecm_add_qch(
151​# MyLib_QCH
152​# OUTPUT_BASENAME MyLib
153​# VERSION "0.42.0"
154​# ORG_DOMAIN org.myorg
155​# SOURCE_DIRS
156​# src
157​# LINK_QCH
158​# Qt5Core_QCH
159​# Qt5Xml_QCH
160​# Qt5Gui_QCH
161​# Qt5Widgets_QCH
162​# BLANK_MACROS
163​# MyLib_EXPORT
164​# MyLib_DEPRECATED
165​# TAGFILE_INSTALL_DESTINATION ${CMAKE_INSTALL_PREFIX}/share/docs/tags
166​# QCH_INSTALL_DESTINATION ${CMAKE_INSTALL_PREFIX}/share/docs/qch
167​# )
168​#
169​# Example usage (with two QCH files, second linking first):
170​#
171​# .. code-block:: cmake
172​#
173​# ecm_add_qch(
174​# MyLib_QCH
175​# OUTPUT_BASENAME MyLib
176​# VERSION ${MyLib_VERSION}
177​# ORG_DOMAIN org.myorg
178​# SOURCES ${MyLib_PUBLIC_HEADERS}
179​# MD_MAINPAGE src/mylib/README.md
180​# LINK_QCH Qt5Core_QCH
181​# TAGFILE_INSTALL_DESTINATION ${CMAKE_INSTALL_PREFIX}/share/docs/tags
182​# QCH_INSTALL_DESTINATION ${CMAKE_INSTALL_PREFIX}/share/docs/qch
183​# )
184​# ecm_add_qch(
185​# MyOtherLib_QCH
186​# OUTPUT_BASENAME MyOtherLib
187​# VERSION ${MyOtherLib_VERSION}
188​# ORG_DOMAIN org.myorg
189​# SOURCES ${MyOtherLib_PUBLIC_HEADERS}
190​# MD_MAINPAGE src/myotherlib/README.md
191​# LINK_QCH Qt5Core_QCH MyLib_QCH
192​# TAGFILE_INSTALL_DESTINATION ${CMAKE_INSTALL_PREFIX}/share/docs/tags
193​# QCH_INSTALL_DESTINATION ${CMAKE_INSTALL_PREFIX}/share/docs/qch
194​# )
195​#
196​# ::
197​#
198​# ecm_install_qch_export(
199​# TARGETS <name> [<name2> [...]]]
200​# FILE <file>
201​# DESTINATION <dest>
202​# [COMPONENT <component>}]
203​# )
204​#
205​# This macro creates and installs a CMake file <file> which exports the given
206​# QCH targets <name> etc., so they can be picked up by CMake-based builds of
207​# other software that also generate QCH files (using ``ecm_add_qch()``) and
208​# which should include links to the QCH files created by the given targets.
209​# The installed CMake file <file> is expected to be included by the CMake
210​# config file created for the software the related QCH files are documenting.
211​#
212​# TARGETS specifies the QCH targets which should be exported. If a target does
213​# not exist or does not have all needed properties, a warning will be
214​# generated and the target skipped.
215​# This behaviour might change in future versions to result in a fail instead.
216​#
217​# FILE specifies the name of the created CMake file, typically with a .cmake
218​# extension.
219​#
220​# DESTINATION specifies the directory on disk to which the file will be
221​# installed. It usually is the same as the one where the CMake config files
222​# for this software are installed.
223​#
224​# COMPONENT specifies the the installation component name with which the
225​# install rule is associated.
226​#
227​# Example usage:
228​#
229​# .. code-block:: cmake
230​#
231​# ecm_install_qch_export(
232​# TARGETS MyLib_QCH
233​# FILE MyLibQCHTargets.cmake
234​# DESTINATION "${CMAKE_INSTALL_PREFIX}/lib/cmake/MyLib"
235​# COMPONENT Devel
236​# )
237​#
238​# Since 5.29.0.
239​
240​#=============================================================================
241​# Copyright 2016 Friedrich W. H. Kossebau <kossebau@kde.org>
242​#
243​# Redistribution and use in source and binary forms, with or without
244​# modification, are permitted provided that the following conditions
245​# are met:
246​#
247​# 1. Redistributions of source code must retain the copyright
248​# notice, this list of conditions and the following disclaimer.
249​# 2. Redistributions in binary form must reproduce the copyright
250​# notice, this list of conditions and the following disclaimer in the
251​# documentation and/or other materials provided with the distribution.
252​# 3. The name of the author may not be used to endorse or promote products
253​# derived from this software without specific prior written permission.
254​#
255​# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
256​# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
257​# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
258​# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
259​# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
260​# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
261​# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
262​# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
263​# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
264​# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
265​
266​include(CMakeParseArguments)
267​
268​function(ecm_add_qch target_name)
269​ # Parse arguments
270​ set(options VERBOSE)
271​ set(oneValueArgs OUTPUT_BASENAME QCH_INSTALL_DESTINATION TAGFILE_INSTALL_DESTINATION VERSION NAMESPACE MD_MAINPAGE ORG_DOMAIN CONFIG_TEMPLATE)
272​ set(multiValueArgs SOURCE_DIRS SOURCES IMAGE_DIRS EXAMPLE_DIRS BLANK_MACROS LINK_QCH LINK_QCH_VERSIONED)
273​ cmake_parse_arguments(ARGS "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
274​
275​ # check required args
276​ foreach(_arg_name OUTPUT_BASENAME QCH_INSTALL_DESTINATION TAGFILE_INSTALL_DESTINATION VERSION)
277​ if(NOT DEFINED ARGS_${_arg_name})
278​ message(FATAL_ERROR "${_arg_name} needs to be defined when calling ecm_add_qch")
279​ endif()
280​ endforeach()
281​ if(NOT DEFINED ARGS_SOURCE_DIRS AND NOT DEFINED ARGS_SOURCES AND NOT DEFINED ARGS_CONFIG_TEMPLATE)
282​ message(FATAL_ERROR "SOURCE_DIRS or SOURCES needs to be defined when calling ecm_add_qch")
283​ endif()
284​ if(DEFINED ARGS_SOURCE_DIRS AND DEFINED ARGS_SOURCES)
285​ message(FATAL_ERROR "Either SOURCE_DIRS or SOURCES, not both, needs to be defined when calling ecm_add_qch")
286​ endif()
287​ if(NOT DEFINED ARGS_ORG_DOMAIN AND NOT DEFINED ARGS_NAMESPACE)
288​ message(FATAL_ERROR "ORG_DOMAIN or NAMESPACE needs to be defined when calling ecm_add_qch")
289​ endif()
290​
291​ # create APIDOX vars for Qt
292​ # Ideally one day Qt CMake Config files provide these
293​ if(NOT DEFINED Qt5Core_APIDOX_TAGSFILE)
294​ # get Qt version, if any
295​ find_package(Qt5Core CONFIG QUIET)
296​ # lookup tag files
297​ find_path(_qtcoreTagsPath qtcore/qtcore.tags
298​ PATHS
299​ /usr/share/doc/packages/qt5/
300​ )
301​
302​ # TODO: if not found, try qmake -query QT_INSTALL_DOCS. or perhaps try that first
303​ if(Qt5Core_FOUND AND _qtcoreTagsPath)
304​ string(REPLACE "." "" _version ${Qt5Core_VERSION})
305​ # TODO: properly find each tag file
306​ # TODO: complete list of Qt modules
307​ foreach(_module
308​ Bluetooth Concurrent Core DBus Gui Location Multimedia MultimediaWidgets
309​ Network Positioning PrintSupport Qml Quick Sensors SerialPort Sql Svg
310​ WebEngine WebView Widgets Xml XmlPatterns
311​ )
312​ string(TOLOWER ${_module} _lowermodule)
313​
314​ add_custom_target(Qt5${_module}_QCH)
315​ set_target_properties(Qt5${_module}_QCH PROPERTIES
316​ DOXYGEN_TAGFILE "${_qtcoreTagsPath}/qt${_lowermodule}/qt${_lowermodule}.tags"
317​ QHP_NAMESPACE "org.qt-project.qt${_lowermodule}"
318​ QHP_NAMESPACE_VERSIONED "org.qt-project.qt${_lowermodule}.${_version}"
319​ QHP_VIRTUALFOLDER "qt${_lowermodule}"
320​ IMPORTED TRUE
321​ )
322​ endforeach()
323​ endif()
324​ endif()
325​
326​ # find required tools
327​ find_program(ECM_DOXYGENQCH_PERL_EXECUTABLE NAMES perl)
328​ find_program(ECM_DOXYGENQCH_QHELPGENERATOR_EXECUTABLE NAMES qhelpgenerator-qt5 qhelpgenerator)
329​ find_program(ECM_DOXYGENQCH_DOXYGEN_EXECUTABLE NAMES doxygen)
330​
331​ # prepare base dirs, working file names and other vars
332​ set(_qch_file_basename "${ARGS_OUTPUT_BASENAME}.qch")
333​ set(_tags_file_basename "${ARGS_OUTPUT_BASENAME}.tags")
334​ set(_qch_buildpath "${CMAKE_CURRENT_BINARY_DIR}/${_qch_file_basename}")
335​ set(_tags_buildpath "${CMAKE_CURRENT_BINARY_DIR}/${_tags_file_basename}")
336​ set(_apidox_builddir "${CMAKE_CURRENT_BINARY_DIR}/${ARGS_OUTPUT_BASENAME}_ECMDoxygenQCH")
337​ if (DEFINED ARGS_NAMESPACE)
338​ set(_namespace "${ARGS_NAMESPACE}")
339​ else()
340​ set(_namespace "${ARGS_ORG_DOMAIN}.${ARGS_OUTPUT_BASENAME}")
341​ endif()
342​ string(REPLACE "." "_" _dotLessVersion ${ARGS_VERSION})
343​ set(_versioned_namespace "${_namespace}.${_dotLessVersion}")
344​ set(_sources)
345​ set(_dep_tagfiles)
346​
347​ ### Create doxygen config file
348​ set(_doxygenconfig_file "${CMAKE_CURRENT_BINARY_DIR}/${ARGS_OUTPUT_BASENAME}_ECMDoxygenQCH.config")
349​ if (DEFINED ARGS_CONFIG_TEMPLATE)
350​ set(_doxygenconfig_template_file "${ARGS_CONFIG_TEMPLATE}")
351​ else()
352​ set(_doxygenconfig_template_file "${ECM_MODULE_DIR}/ECMDoxygenQCH.config.in")
353​ endif()
354​ # Setup variables used in config file template, ECM_DOXYGENQCH_*
355​ set(ECM_DOXYGENQCH_OUTPUTDIR "\"${_apidox_builddir}\"")
356​ set(ECM_DOXYGENQCH_TAGFILE "\"${_tags_buildpath}\"")
357​ set(ECM_DOXYGENQCH_LAYOUTFILE "\"${ECM_MODULE_DIR}/ECMDoxygenQCHLayout.xml\"")
358​ set(ECM_DOXYGENQCH_IMAGEDIRS)
359​ foreach(_image_DIR IN LISTS ARGS_IMAGE_DIRS)
360​ if (NOT IS_ABSOLUTE ${_image_DIR})
361​ set(_image_DIR "${CMAKE_CURRENT_SOURCE_DIR}/${_image_DIR}")
362​ endif()
363​ # concat dirs separated by a break, it is no issue that first has also a leading break
364​ set(ECM_DOXYGENQCH_IMAGEDIRS "${ECM_DOXYGENQCH_IMAGEDIRS} \\\n\"${_image_DIR}\"")
365​ endforeach()
366​ set(ECM_DOXYGENQCH_EXAMPLEDIRS)
367​ foreach(_example_DIR IN LISTS ARGS_EXAMPLE_DIRS)
368​ if (NOT IS_ABSOLUTE ${_example_DIR})
369​ set(_example_DIR "${CMAKE_CURRENT_SOURCE_DIR}/${_example_DIR}")
370​ endif()
371​ # concat dirs separated by a break, it is no issue that first has also a leading break
372​ set(ECM_DOXYGENQCH_EXAMPLEDIRS "${ECM_DOXYGENQCH_EXAMPLEDIRS} \\\n\"${_example_DIR}\"")
373​ endforeach()
374​ if (ARGS_MD_MAINPAGE)
375​ if (NOT IS_ABSOLUTE ${ARGS_MD_MAINPAGE})
376​ set(ARGS_MD_MAINPAGE "${CMAKE_CURRENT_SOURCE_DIR}/${ARGS_MD_MAINPAGE}")
377​ endif()
378​ set(ECM_DOXYGENQCH_MAINPAGE_MDFILE "\"${ARGS_MD_MAINPAGE}\"")
379​ else()
380​ set(ECM_DOXYGENQCH_MAINPAGE_MDFILE)
381​ endif()
382​ set(ECM_DOXYGENQCH_INPUT)
383​ if (ARGS_SOURCE_DIRS)
384​ foreach(_source_DIR IN LISTS ARGS_SOURCE_DIRS)
385​ if (NOT IS_ABSOLUTE ${_source_DIR})
386​ set(_source_DIR "${CMAKE_CURRENT_SOURCE_DIR}/${_source_DIR}")
387​ endif()
388​ # concat dirs separated by a break, it is no issue that first has also a leading break
389​ set(ECM_DOXYGENQCH_INPUT "${ECM_DOXYGENQCH_INPUT} \\\n\"${_source_DIR}\"")
390​ endforeach()
391​ if (ARGS_MD_MAINPAGE)
392​ set(ECM_DOXYGENQCH_INPUT "${ECM_DOXYGENQCH_INPUT} \\\n\"${ARGS_MD_MAINPAGE}\"")
393​ endif()
394​ set(ECM_DOXYGENQCH_FILE_PATTERNS "*.h *.cpp *.hpp *.hh *.cc *.h++ *.c++ *.hxx *.cxx *.dox *.md")
395​ else()
396​ foreach(_source IN LISTS ARGS_SOURCES)
397​ if (NOT IS_ABSOLUTE ${_source})
398​ set(_source "${CMAKE_CURRENT_SOURCE_DIR}/${_source}")
399​ endif()
400​ list(APPEND _sources "${_source}")
401​ endforeach()
402​ if (ARGS_MD_MAINPAGE)
403​ list(FIND _sources ${ARGS_MD_MAINPAGE} _mainpage_index)
404​ if (_mainpage_index STREQUAL -1)
405​ list(APPEND _sources "${ARGS_MD_MAINPAGE}")
406​ endif()
407​ endif()
408​ foreach(_source IN LISTS _sources)
409​ # concat sources separated by a break, it is no issue that first has also a leading break
410​ set(ECM_DOXYGENQCH_INPUT "${ECM_DOXYGENQCH_INPUT} \\\n\"${_source}\"")
411​ endforeach()
412​ set(ECM_DOXYGENQCH_FILE_PATTERNS "")
413​ endif()
414​
415​ set(ECM_DOXYGENQCH_PROJECTNAME ${ARGS_OUTPUT_BASENAME})
416​ file(RELATIVE_PATH _builddirrelative_filepath "${_apidox_builddir}/html" ${_qch_buildpath})
417​ set(ECM_DOXYGENQCH_FILEPATH "\"${_builddirrelative_filepath}\"")
418​ set(ECM_DOXYGENQCH_PROJECTVERSION ${ARGS_VERSION})
419​ set(ECM_DOXYGENQCH_VIRTUALFOLDER "${ARGS_OUTPUT_BASENAME}")
420​ set(ECM_DOXYGENQCH_FULLNAMESPACE ${_versioned_namespace})
421​ set(ECM_DOXYGENQCH_BLANK_MACROS)
422​ foreach(_macro IN LISTS ARGS_BLANK_MACROS)
423​ # concat dirs separated by a break, it is no issue that first has also a leading break
424​ set(ECM_DOXYGENQCH_BLANK_MACROS "${ECM_DOXYGENQCH_BLANK_MACROS} \\\n${_macro}=\"\"")
425​ endforeach()
426​ set(ECM_DOXYGENQCH_TAGFILES)
427​ foreach(_versioned_postfix "" "_VERSIONED")
428​ foreach(_link_qch IN LISTS ARGS_LINK_QCH${_versioned_postfix})
429​ set(_target_usable TRUE)
430​ if (NOT TARGET ${_link_qch})
431​ message(STATUS "No such target ${_link_qch} defined when calling ecm_add_qch().")
432​ set(_target_usable FALSE)
433​ elseif()
434​ foreach(_propertyname
435​ DOXYGEN_TAGFILE
436​ QHP_NAMESPACE${_versioned_postfix}
437​ QHP_VIRTUALFOLDER
438​ )
439​ if(NOT "${_property}")
440​ message(STATUS "No property ${_propertyname} set on ${_link_qch} when calling ecm_add_qch().")
441​ set(_target_usable FALSE)
442​ endif()
443​ endforeach()
444​ endif()
445​ if(_target_usable)
446​ get_target_property(_link_qch_tagfile ${_link_qch} DOXYGEN_TAGFILE)
447​ get_target_property(_link_qch_tagfile_build ${_link_qch} DOXYGEN_TAGFILE_BUILD)
448​ get_target_property(_link_qch_namespace ${_link_qch} QHP_NAMESPACE${_versioned_postfix})
449​ get_target_property(_link_qch_virtualfolder ${_link_qch} QHP_VIRTUALFOLDER)
450​ # if same build, then prefer build version over any installed one
451​ if (${_link_qch_tagfile_build})
452​ set(_link_qch_tagfile ${_link_qch_tagfile_build})
453​ list(APPEND _dep_tagfiles "${_link_qch_tagfile}")
454​ endif()
455​ set(_tagfile_entry "\"${_link_qch_tagfile}=qthelp://${_link_qch_namespace}/${_link_qch_virtualfolder}/\"")
456​ # concat dirs separated by a break, it is no issue that first has also a leading break
457​ set(ECM_DOXYGENQCH_TAGFILES "${ECM_DOXYGENQCH_TAGFILES} \\\n${_tagfile_entry}")
458​ else()
459​ message(WARNING "No linking to API dox of ${_link_qch}.")
460​ endif()
461​ endforeach()
462​ endforeach()
463​
464​ set(ECM_DOXYGENQCH_WARN_LOGFILE "\"${_doxygenconfig_file}.log\"")
465​ if(ARGS_VERBOSE)
466​ set(ECM_DOXYGENQCH_QUIET "NO")
467​ else()
468​ set(ECM_DOXYGENQCH_QUIET "YES")
469​ endif()
470​
471​ if (NOT ECM_DOXYGENQCH_DOXYGEN_EXECUTABLE)
472​ message(WARNING "Unable to find the doxygen utility - API dox QCH file will not be generated!")
473​ elseif(NOT ECM_DOXYGENQCH_QHELPGENERATOR_EXECUTABLE)
474​ message(WARNING "Unable to find the qhelpgenerator utility - API dox QCH file will not be generated!")
475​ elseif(NOT ECM_DOXYGENQCH_PERL_EXECUTABLE)
476​ message(WARNING "Unable to find the perl utility - API dox QCH file will not be generated!")
477​ else()
478​ configure_file(
479​ "${_doxygenconfig_template_file}"
480​ "${_doxygenconfig_file}"
481​ @ONLY
482​ )
483​
484​ set(_qch_INSTALLPATH ${ARGS_QCH_INSTALL_DESTINATION})
485​ set(_tags_INSTALLPATH ${ARGS_TAGFILE_INSTALL_DESTINATION})
486​ file(RELATIVE_PATH _relative_qch_file ${CMAKE_BINARY_DIR} ${_qch_buildpath})
487​ file(RELATIVE_PATH _relative_tags_file ${CMAKE_BINARY_DIR} ${_tags_buildpath})
488​ add_custom_command(
489​ OUTPUT ${_qch_buildpath} ${_tags_buildpath}
490​ COMMENT "Generating ${_relative_qch_file}, ${_relative_tags_file}"
491​ COMMAND cmake -E remove_directory "${ECM_DOXYGENQCH_OUTPUTDIR}"
492​ COMMAND cmake -E make_directory "${ECM_DOXYGENQCH_OUTPUTDIR}"
493​ COMMAND ${ECM_DOXYGENQCH_DOXYGEN_EXECUTABLE} "${_doxygenconfig_file}"
494​ DEPENDS ${_doxygenconfig_file} ${_sources} ${_dep_tagfiles}
495​ )
496​ add_custom_target(${target_name} ALL DEPENDS ${_qch_buildpath} ${_tags_buildpath})
497​ set_target_properties(${target_name} PROPERTIES
498​ DOXYGEN_TAGFILE "${_qch_INSTALLPATH}/${_tags_file_basename}"
499​ DOXYGEN_TAGFILE_BUILD "${_tags_buildpath}"
500​ QHP_NAMESPACE "${_namespace}"
501​ QHP_NAMESPACE_VERSIONED "${_versioned_namespace}"
502​ QHP_VIRTUALFOLDER "${ECM_DOXYGENQCH_VIRTUALFOLDER}"
503​ )
504​
505​ install(FILES
506​ ${_qch_buildpath}
507​ DESTINATION ${_qch_INSTALLPATH}
508​ COMPONENT Devel
509​ )
510​
511​ install(FILES
512​ ${_tags_buildpath}
513​ DESTINATION ${_tags_INSTALLPATH}
514​ COMPONENT Devel
515​ )
516​ endif()
517​
518​endfunction()
519​
520​
521​function(ecm_install_qch_export)
522​ set(options )
523​ set(oneValueArgs FILE DESTINATION COMPONENT)
524​ set(multiValueArgs TARGETS)
525​
526​ cmake_parse_arguments(ARGS "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
527​
528​ if(NOT DEFINED ARGS_FILE)
529​ message(FATAL_ERROR "FILE needs to be defined when calling ecm_install_qch_export().")
530​ endif()
531​
532​ if(NOT DEFINED ARGS_DESTINATION)
533​ message(FATAL_ERROR "DESTINATION needs to be defined when calling ecm_install_qch_export().")
534​ endif()
535​
536​ if(NOT DEFINED ARGS_TARGETS)
537​ message(FATAL_ERROR "TARGETS needs to be defined when calling ecm_install_qch_export().")
538​ endif()
539​
540​ set(_content
541​"# Generated by ecm_install_qch_export()
542​# Any changes to this file will be overwritten by the next CMake run.
543​"
544​ )
545​
546​ foreach(_target IN LISTS ARGS_TARGETS)
547​ set(_target_usable TRUE)
548​
549​ if (NOT TARGET ${_target})
550​ message(STATUS "No such target ${_target} when calling ecm_install_qch_export().")
551​ set(_target_usable FALSE)
552​ else()
553​ foreach(_propertyname
554​ DOXYGEN_TAGFILE
555​ QHP_NAMESPACE
556​ QHP_NAMESPACE_VERSIONED
557​ QHP_VIRTUALFOLDER
558​ )
559​ get_target_property(_property ${_target} ${_propertyname})
560​ if(NOT _property)
561​ message(STATUS "No property ${_propertyname} set on ${_target} when calling ecm_install_qch_export(). <${_property}>")
562​ set(_target_usable FALSE)
563​ endif()
564​ endforeach()
565​ endif()
566​ if(_target_usable)
567​ get_target_property(_tagfile ${_target} DOXYGEN_TAGFILE)
568​ get_target_property(_namespace ${_target} QHP_NAMESPACE)
569​ get_target_property(_namespace_versioned ${_target} QHP_NAMESPACE_VERSIONED)
570​ get_target_property(_virtualfolder ${_target} QHP_VIRTUALFOLDER)
571​ set(_content "${_content}
572​if (NOT TARGET ${_target})
573​
574​add_custom_target(${_target})
575​set_target_properties(${_target} PROPERTIES
576​ DOXYGEN_TAGFILE \"${_tagfile}\"
577​ QHP_NAMESPACE \"${_namespace}\"
578​ QHP_NAMESPACE_VERSIONED \"${_namespace_versioned}\"
579​ QHP_VIRTUALFOLDER \"${_virtualfolder}\"
580​ IMPORTED TRUE
581​)
582​
583​endif()
584​"
585​ )
586​ else()
587​ message(STATUS "No target exported for ${_target}.")
588​ endif()
589​ endforeach()
590​
591​ if (NOT IS_ABSOLUTE ${ARGS_FILE})
592​ set(ARGS_FILE "${CMAKE_CURRENT_BINARY_DIR}/${ARGS_FILE}")
593​ endif()
594​
595​ file(GENERATE
596​ OUTPUT "${ARGS_FILE}"
597​ CONTENT "${_content}"
598​ )
599​
600​ if (DEFINED ARGS_COMPONENT)
601​ set(_component COMPONENT ${ARGS_COMPONENT})
602​ endif()
603​ install(
604​ FILES "${ARGS_FILE}"
605​ DESTINATION "${ARGS_DESTINATION}"
606​ ${_component}
607​ )
608​
609​endfunction()