More robust handling for installed headers
[alexxy/gromacs.git] / docs / doxygen / CMakeLists.txt
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34
35 include(gmxCustomCommandUtilities)
36 include(gmxOptionUtilities)
37
38 find_package(Doxygen QUIET)
39 if (DOXYGEN_FOUND)
40     # This logic closely follows that found in FindDoxygen.cmake for dot,
41     # except that the PATH variable is not cached.
42     find_program(DOXYGEN_MSCGEN_EXECUTABLE
43         NAMES mscgen
44         DOC "Message sequence chart renderer tool (http://www.mcternan.me.uk/mscgen/)")
45     if (DOXYGEN_MSCGEN_EXECUTABLE)
46         set(DOXYGEN_MSCGEN_FOUND TRUE)
47         get_filename_component(DOXYGEN_MSCGEN_PATH "${DOXYGEN_MSCGEN_EXECUTABLE}" PATH)
48     endif()
49     mark_as_advanced(DOXYGEN_MSCGEN_EXECUTABLE)
50 endif()
51
52 gmx_dependent_option(
53     GMX_COMPACT_DOXYGEN
54     "Skip parts of Doxygen documentation (in particular, many graphs) to save disk space and time"
55     OFF
56     DOXYGEN_FOUND)
57 mark_as_advanced(GMX_COMPACT_DOXYGEN)
58
59 find_package(PythonInterp)
60 set(USE_PYTHON_SCRIPTS OFF)
61 if (PYTHONINTERP_FOUND AND NOT PYTHON_VERSION_STRING VERSION_LESS "2.6")
62     set(USE_PYTHON_SCRIPTS ON)
63 endif()
64
65 # Note that if you relocate this file, you also need to change gmxtree.py.
66 # TODO: Try to find a solution where this would be hard-coded here, completely
67 # separate from the logic that generates it.
68 set(INSTALLED_HEADERS_FILE ${PROJECT_BINARY_DIR}/src/gromacs/installed-headers.txt)
69
70 ########################################################################
71 # Doxygen configuration
72 #
73 if (DOXYGEN_FOUND)
74     # Generate Doxygen input configuration files
75     file(GLOB NB_KERNEL_DIRS
76          ${CMAKE_SOURCE_DIR}/src/gromacs/gmxlib/nonbonded/nb_kernel_*/)
77     list(REMOVE_ITEM NB_KERNEL_DIRS
78          ${CMAKE_SOURCE_DIR}/src/gromacs/gmxlib/nonbonded/nb_kernel_c)
79     foreach (dir ${NB_KERNEL_DIRS})
80         SET(NB_KERNEL_DIRS_TO_IGNORE_IN_DOXYGEN
81             "${NB_KERNEL_DIRS_TO_IGNORE_IN_DOXYGEN} \\\n                         ${dir}")
82     endforeach()
83     set(DEPGRAPH_DIR ${CMAKE_CURRENT_BINARY_DIR}/depgraphs)
84     set(DOXYGEN_SECTIONS "")
85     set(DOXYGEN_EXTRA_SETTINGS "")
86     if (GMX_COMPACT_DOXYGEN)
87         set(DOXYGEN_EXTRA_SETTINGS "@INCLUDE   = ${CMAKE_CURRENT_SOURCE_DIR}/Doxyfile-compact")
88     endif()
89     configure_file(Doxyfile-common.cmakein Doxyfile-common)
90     configure_file(Doxyfile-full.cmakein Doxyfile-full)
91     configure_file(Doxyfile-lib.cmakein Doxyfile-lib)
92     configure_file(Doxyfile-user.cmakein Doxyfile-user)
93     configure_file(Doxyfile-xml.cmakein Doxyfile-xml)
94
95     configure_file(RunDoxygen.cmake.cmakein RunDoxygen.cmake @ONLY)
96     gmx_configure_version_file(Doxyfile-version.cmakein Doxyfile-version
97                                TARGET doxygen-version)
98
99     # Add a stamp that gets updated whenever a source file that contributes to
100     # Doxygen is updated.  All Doxygen targets can then depend on this stamp,
101     # instead of each specifying this massive set of dependencies.
102     # TODO: The set of files that affects Doxygen is not exactly the same as
103     # that which affects the dependency graphs, and neither is captured
104     # perfectly with this set, but this can be improved if it becomes a real
105     # issue (the differences are mainly in the generated group kernel files,
106     # but there are some minor other differences as well).
107     if (SOURCE_IS_GIT_REPOSITORY AND GIT_FOUND)
108         gmx_get_files_with_gitattribute(doxygen_sources gmx-doxygen)
109         # Add also common configuration files that influence the generation.
110         set(doxygen_deps
111             ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile-common
112             ${CMAKE_CURRENT_BINARY_DIR}/RunDoxygen.cmake)
113         if (GMX_COMPACT_DOXYGEN)
114             list(APPEND doxygen_deps ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile-compact)
115         endif()
116         gmx_add_custom_output_target(doxygen-source-timestamp
117             OUTPUT STAMP
118             DEPENDS_FILE_LIST doxygen_sources
119             DEPENDS ${doxygen_deps}
120             COMMENT "Updating Doxygen source timestamp")
121     else()
122         # If there is no git, we just update the stamp every time, and the
123         # builds are triggered every time.  This should be rare enough, but
124         # this case still needs to be supported for the Jenkins job that builds
125         # the documentation for a release from the release tarball.
126         gmx_add_custom_output_target(doxygen-source-timestamp
127             RUN_ALWAYS OUTPUT STAMP
128             COMMENT "Updating Doxygen source timestamp")
129     endif()
130
131     # Helper function to create a Doxygen build target
132     function (add_doxygen_target TARGET TYPE COMMENT)
133         set(_deps doxygen-source-timestamp doxygen-version
134             ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile-${TYPE})
135         set(_fast_arg "")
136         if ("${ARGN}" STREQUAL "DEPGRAPHS")
137             set(_fast_arg "ADD_FAST_TARGET")
138             if (TARGET dep-graphs-dot)
139                 list(APPEND _deps dep-graphs-dot)
140             endif()
141         endif()
142         gmx_add_custom_output_target(${TARGET} OUTPUT STAMP ${_fast_arg}
143             # Ensure the directory exists to avoid spurious warnings
144             COMMAND ${CMAKE_COMMAND} -E make_directory ${DEPGRAPH_DIR}
145             COMMAND ${CMAKE_COMMAND} -DDOCTYPE=${TYPE} -P RunDoxygen.cmake
146             DEPENDS ${_deps}
147             WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
148             COMMENT "${COMMENT}")
149         if (_fast_arg)
150             add_dependencies(${TARGET}-fast doxygen-version)
151         endif()
152     endfunction()
153
154     # The XML target is necessary for the dependency graphs
155     add_doxygen_target(doc-xml xml "Extracting Doxygen documentation to XML")
156
157     # Add targets for generating the dependency graphs; they are necessary for
158     # the full and lib variants of the documentation.
159     if (USE_PYTHON_SCRIPTS)
160         # Add target that generates .dot files for the dependency graphs.
161         # The output also depends on the Doxygen source files, but the
162         # dependency on doc-xml takes care of that transitively.
163         gmx_add_custom_output_target(dep-graphs-dot ADD_FAST_TARGET
164             OUTPUT STAMP
165             COMMAND ${PYTHON_EXECUTABLE}
166                 ${CMAKE_CURRENT_SOURCE_DIR}/graphbuilder.py
167                 -S ${CMAKE_SOURCE_DIR} -B ${CMAKE_BINARY_DIR}
168                 --ignore-cycles ${CMAKE_CURRENT_SOURCE_DIR}/cycle-suppressions.txt
169                 -o ${DEPGRAPH_DIR}
170             DEPENDS doc-xml ${INSTALLED_HEADER_FILE}
171                 ${CMAKE_CURRENT_SOURCE_DIR}/doxygenxml.py
172                 ${CMAKE_CURRENT_SOURCE_DIR}/gmxtree.py
173                 ${CMAKE_CURRENT_SOURCE_DIR}/graphbuilder.py
174                 ${CMAKE_CURRENT_SOURCE_DIR}/cycle-suppressions.txt
175             COMMENT "Generating include dependency graphs for dot")
176
177         # Add separate targets for converting the .dot files to .png.
178         # These are not needed by the Doxygen targets, but are useful for
179         # investigating just the graphs.
180         set(dep_graphs_command_dot
181             ${CMAKE_COMMAND} -DGRAPHDIR=${DEPGRAPH_DIR}
182             -DDOT_EXECUTABLE=${DOXYGEN_DOT_EXECUTABLE}
183             -P ${CMAKE_CURRENT_SOURCE_DIR}/generateGraphs.cmake)
184         add_custom_target(dep-graphs      COMMAND ${dep_graphs_command_dot}
185             COMMENT "Generating PNG include dependency graphs" VERBATIM)
186         add_custom_target(dep-graphs-fast COMMAND ${dep_graphs_command_dot}
187             COMMENT "Generating PNG include dependency graphs" VERBATIM)
188         add_dependencies(dep-graphs      dep-graphs-dot)
189         add_dependencies(dep-graphs-fast dep-graphs-dot-fast)
190     endif()
191
192     # Create the actual targets to build the documentation.
193     add_doxygen_target(doc-full full "Generating full documentation with Doxygen" DEPGRAPHS)
194     add_doxygen_target(doc-lib  lib  "Generating library documentation with Doxygen" DEPGRAPHS)
195     add_doxygen_target(doc-user user "Generating public API documentation with Doxygen")
196     # Convenience targets to build all the documentation flavors.
197     add_custom_target(doc-all)
198     add_custom_target(doc-all-fast)
199     add_dependencies(doc-all      doc-full doc-lib doc-user)
200     add_dependencies(doc-all-fast doc-full-fast doc-lib-fast doc-user)
201
202     # Finally, create the doc-check target.
203     if (USE_PYTHON_SCRIPTS)
204         # TODO: Consider whether this is the best name and location for this
205         # code, since not all of it is Doxygen-specific (but nearly all of it
206         # relies on the Doxygen XML documentation).
207         set(doc_check_command
208             ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/doxygen-check.py
209             -S ${CMAKE_SOURCE_DIR} -B ${CMAKE_BINARY_DIR}
210             -l ${CMAKE_CURRENT_BINARY_DIR}/doxygen-check.log
211             --exitcode
212             --ignore ${CMAKE_CURRENT_SOURCE_DIR}/suppressions.txt
213             --ignore-cycles ${CMAKE_CURRENT_SOURCE_DIR}/cycle-suppressions.txt)
214         add_custom_target(doc-check      COMMAND ${doc_check_command}
215             COMMENT "Checking Doxygen documentation" VERBATIM)
216         add_custom_target(doc-check-fast COMMAND ${doc_check_command}
217             COMMENT "Checking Doxygen documentation" VERBATIM)
218         add_dependencies(doc-check      doc-xml)
219     endif()
220 endif()