Merge branch release-2021 into merge-2021-into-master
[alexxy/gromacs.git] / docs / CMakeLists.txt
1 #
2 # This file is part of the GROMACS molecular simulation package.
3 #
4 # Copyright (c) 2014,2015,2016,2017,2018 by the GROMACS development team.
5 # Copyright (c) 2019,2020,2021, by the GROMACS development team, led by
6 # Mark Abraham, David van der Spoel, Berk Hess, and Erik Lindahl,
7 # and including many others, as listed in the AUTHORS file in the
8 # top-level source directory and at http://www.gromacs.org.
9 #
10 # GROMACS is free software; you can redistribute it and/or
11 # modify it under the terms of the GNU Lesser General Public License
12 # as published by the Free Software Foundation; either version 2.1
13 # of the License, or (at your option) any later version.
14 #
15 # GROMACS is distributed in the hope that it will be useful,
16 # but WITHOUT ANY WARRANTY; without even the implied warranty of
17 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
18 # Lesser General Public License for more details.
19 #
20 # You should have received a copy of the GNU Lesser General Public
21 # License along with GROMACS; if not, see
22 # http://www.gnu.org/licenses, or write to the Free Software Foundation,
23 # Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA.
24 #
25 # If you want to redistribute modifications to GROMACS, please
26 # consider that scientific software is very special. Version
27 # control is crucial - bugs must be traceable. We will be happy to
28 # consider code for inclusion in the official distribution, but
29 # derived work must not be called official GROMACS. Details are found
30 # in the README & COPYING files - if they are missing, get the
31 # official version at http://www.gromacs.org.
32 #
33 # To help us fund GROMACS development, we humbly ask that you cite
34 # the research papers on the package. Check out http://www.gromacs.org.
35
36 # This directory provides a unified place for building all kinds of
37 # GROMACS documentation. This includes some "static" content (Doxygen
38 # code documentation, reference manual, install guide, old online HTML
39 # images), and content generated from the gmx program for the various
40 # tools (man and HTML pages). It also provides the "webpage" target,
41 # that combines all of the above (except man pages in man format) into
42 # a form suitable for automated deployment to the GROMACS website. It
43 # also provides the INSTALL file for the tarball.
44 #
45 # The webpage is mostly built by Sphinx.  Variable values for Sphinx
46 # substitutions are configured by CMake (for things like version numbers),
47 # using gmx_configure_version_file().  This happens during build time instead
48 # of configure time, because 1) some of the version variables are only
49 # available during build time, and 2) we don't want to do all the Sphinx setup
50 # during configuration to save some time when not building the content.
51 # All of the generated values get put into conf.py (generated from
52 # conf.cmakein.py).
53
54 set(SOURCE_MD5SUM "unknown" CACHE STRING
55     "MD5 sum of the source tarball, normally used only for the pre-release webpage build")
56 # REGRESSIONTEST_MD5SUM is set in cmake/gmxVersionInfo.cmake because it is used also in tests/CMakeLists.txt
57 mark_as_advanced(SOURCE_MD5SUM)
58
59 set(EXPECTED_DOXYGEN_VERSION 1.8.5)
60
61 set(EXPECTED_SPHINX_VERSION 1.6.1)
62
63 # By default, suppress output after first configuration.
64 if(SPHINX_ALREADY_SEARCHED)
65     set(Sphinx_FIND_QUIETLY ON)
66 endif()
67 find_package(Sphinx ${EXPECTED_SPHINX_VERSION} COMPONENTS pygments)
68 set(SPHINX_ALREADY_SEARCHED TRUE CACHE BOOL "True if a search for Sphinx has already been done")
69 mark_as_advanced(SPHINX_ALREADY_SEARCHED)
70
71 # Even if we aren't going to make the full webpage, set up to put all
72 # the documentation output in the same place, for convenience
73 set(HTML_OUTPUT_DIR "${CMAKE_CURRENT_BINARY_DIR}/html")
74 file(MAKE_DIRECTORY ${HTML_OUTPUT_DIR})
75
76 # Prepare directories for pdf/tex output
77 set(TEX_OUTPUT_DIR "${CMAKE_CURRENT_BINARY_DIR}/manual")
78 set(SPHINX_LATEX_FILE "${TEX_OUTPUT_DIR}/gromacs.tex")
79 file(MAKE_DIRECTORY ${TEX_OUTPUT_DIR})
80
81 # The directory from which man pages will be installed; if it remains
82 # empty, they will be silently skipped.
83 set(MAN_PAGE_DIR)
84 if (SOURCE_IS_SOURCE_DISTRIBUTION)
85     # When building from the tarball, install the bundled man pages
86     # (unless overridden).
87     set(MAN_PAGE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
88 endif()
89
90 add_subdirectory(doxygen)
91
92 # TODO: Consider whether this could just be replaced by using
93 # GMX_DEVELOPER_BUILD to control this as well.
94 option(GMX_BUILD_MANUAL "Whether to try to configure to build the PDF manual" OFF)
95 mark_as_advanced(GMX_BUILD_MANUAL)
96
97 set(MANUAL_BUILD_IS_POSSIBLE ON)
98 set(MANUAL_BUILD_NOT_POSSIBLE_REASON)
99 set(NO_IMAGE_CONVERT_REASON)
100 if (NOT GMX_BUILD_MANUAL)
101     # Make sure we only do detection of manual-building dependencies
102     # when the user opted in for that.
103     set(MANUAL_BUILD_IS_POSSIBLE OFF)
104     set(MANUAL_BUILD_NOT_POSSIBLE_REASON "GMX_BUILD_MANUAL is not ON")
105 elseif (BUILD_IS_INSOURCE)
106     # UseLATEX.cmake does not work with an in-source build
107     set(MANUAL_BUILD_IS_POSSIBLE OFF)
108     set(MANUAL_BUILD_NOT_POSSIBLE_REASON "the build is in-source")
109 else()
110     include(manual/UseLATEX.cmake)
111     if(NOT SPHINX_FOUND)
112         set(MANUAL_BUILD_IS_POSSIBLE OFF)
113         set(MANUAL_BUILD_NOT_POSSIBLE_REASON "Sphinx has not been found and is needed to create the LaTex input files")
114     elseif(NOT PDFLATEX_COMPILER)
115         set(MANUAL_BUILD_IS_POSSIBLE OFF)
116         set(MANUAL_BUILD_NOT_POSSIBLE_REASON "pdflatex is not available")
117     elseif(NOT IMAGE_CONVERT_POSSIBLE)
118         set(MANUAL_BUILD_IS_POSSIBLE OFF)
119         set(MANUAL_BUILD_NOT_POSSIBLE_REASON "a working form of ImageMagick convert is not available")
120         set(NO_IMAGE_CONVERT_REASON "Can not convert files for online or pdf manual")
121         # TODO Later, identify other dependencies like bibtex,
122         # make_index, date, some graphics conversion program,
123         # etc. Perhaps patch UseLATEX.cmake and contribute upstream.
124     endif()
125
126 endif()
127
128 if (SPHINX_FOUND)
129     # We need to have all the Sphinx input files in a single directory, and
130     # since some of them are generated, we copy everything into the build tree,
131     # to this directory.
132     set(SPHINX_INPUT_DIR ${CMAKE_CURRENT_BINARY_DIR}/sphinx-input)
133     set(SPHINX_EXTENSION_PATH ${CMAKE_CURRENT_SOURCE_DIR})
134     # As the manual build now depends also on Sphinx, the inclusion path needs
135     # to be set after we know the basic information for Sphinx.
136     add_subdirectory(manual)
137     if (SOURCE_MD5SUM STREQUAL "unknown")
138         # But for testing the webpage build (e.g. from the repo) we
139         # need a default value.
140         set(REGRESSIONTEST_MD5SUM_STRING "unknown")
141     else()
142         # The real build of the webpage happens from the tarball, and
143         # this should be set to the matching MD5 sum.
144         set(REGRESSIONTEST_MD5SUM_STRING "${REGRESSIONTEST_MD5SUM}")
145     endif()
146     # The reference manual still contains the individual sections from the
147     # LaTeX document, with the files below grouped and annotated by chapter.
148     set(REFERENCEMANUAL_SPHINX_FILES_GENERAL
149         # Main index file, preface and introduction.
150         reference-manual/index.rst
151         reference-manual/preface.rst
152         reference-manual/introduction.rst
153         # Definitions and Units chapter
154         reference-manual/definitions.rst
155         # Topologies chapter
156         reference-manual/topologies.rst
157         reference-manual/topologies/particle-type.rst
158         reference-manual/topologies/parameter-files.rst
159         reference-manual/topologies/molecule-definition.rst
160         reference-manual/topologies/constraint-algorithm-section.rst
161         reference-manual/topologies/pdb2gmx-input-files.rst
162         reference-manual/topologies/topology-file-formats.rst
163         reference-manual/topologies/force-field-organization.rst
164         # File formats chapter
165         reference-manual/file-formats.rst
166         # Run parameters and programs chapter
167         reference-manual/run-parameters.rst
168         # Implementation details chapter
169         reference-manual/details.rst
170         # Averages and fluctations chapter
171         reference-manual/averages.rst
172         # References
173         reference-manual/references.rst
174         # PNG formated plot files that don't need to be converted into PNG
175         # for the web page.
176         reference-manual/plots/GMX_logos/gmx_falcon_blue.png
177         reference-manual/plots/adress.png
178         reference-manual/plots/plotje.png
179         reference-manual/plots/xvgr.png
180         )
181     set(REFERENCEMANUAL_SPHINX_FILES_WITH_IMAGES
182         # Algorithms chapter
183         reference-manual/algorithms.rst
184         reference-manual/algorithms/periodic-boundary-conditions.rst
185         reference-manual/algorithms/group-concept.rst
186         reference-manual/algorithms/molecular-dynamics.rst
187         reference-manual/algorithms/shell-molecular-dynamics.rst
188         reference-manual/algorithms/constraint-algorithms.rst
189         reference-manual/algorithms/simulated-annealing.rst
190         reference-manual/algorithms/stochastic-dynamics.rst
191         reference-manual/algorithms/brownian-dynamics.rst
192         reference-manual/algorithms/energy-minimization.rst
193         reference-manual/algorithms/normal-mode-analysis.rst
194         reference-manual/algorithms/free-energy-calculations.rst
195         reference-manual/algorithms/replica-exchange.rst
196         reference-manual/algorithms/essential-dynamics.rst
197         reference-manual/algorithms/expanded-ensemble.rst
198         reference-manual/algorithms/parallelization-domain-decomp.rst
199         # Interaction functions and force fields chapter
200         reference-manual/functions.rst
201         reference-manual/functions/bonded-interactions.rst
202         reference-manual/functions/force-field.rst
203         reference-manual/functions/free-energy-interactions.rst
204         reference-manual/functions/interaction-methods.rst
205         reference-manual/functions/long-range-electrostatics.rst
206         reference-manual/functions/long-range-vdw.rst
207         reference-manual/functions/nonbonded-interactions.rst
208         reference-manual/functions/polarization.rst
209         reference-manual/functions/restraints.rst
210         # Special topics chapter
211         reference-manual/special.rst
212         reference-manual/special/free-energy-implementation.rst
213         reference-manual/special/pulling.rst
214         reference-manual/special/awh.rst
215         reference-manual/special/enforced-rotation.rst
216         reference-manual/special/electric-fields.rst
217         reference-manual/special/comp-electrophys.rst
218         reference-manual/special/free-energy-pmf.rst
219         reference-manual/special/remove-fast-dgf.rst
220         reference-manual/special/viscosity-calculation.rst
221         reference-manual/special/tabulated-interaction-functions.rst
222         reference-manual/special/qmmm.rst
223         reference-manual/special/vmd-imd.rst
224         reference-manual/special/membrane-embedding.rst
225         reference-manual/special/mimic-qmmm.rst
226         reference-manual/special/density-guided-simulation.rst
227         # Analysis chapter
228         reference-manual/analysis.rst
229         reference-manual/analysis/using-groups.rst
230         reference-manual/analysis/looking-at-trajectory.rst
231         reference-manual/analysis/general-properties.rst
232         reference-manual/analysis/radial-distribution-function.rst
233         reference-manual/analysis/correlation-function.rst
234         reference-manual/analysis/curve-fitting.rst
235         reference-manual/analysis/mean-square-displacement.rst
236         reference-manual/analysis/bond-angle-dihedral.rst
237         reference-manual/analysis/radius-of-gyration.rst
238         reference-manual/analysis/rmsd.rst
239         reference-manual/analysis/covariance-analysis.rst
240         reference-manual/analysis/dihedral-pca.rst
241         reference-manual/analysis/hydrogen-bonds.rst
242         reference-manual/analysis/protein-related.rst
243         reference-manual/analysis/interface-related.rst)
244     # The image files have also been ordered by the respective
245     # chapter they are included in in the reference manual
246     set(REFERENCEMANUAL_IMAGE_FILES
247         # General folder
248         reference-manual/plots/decomp.pdf
249         reference-manual/plots/dih.pdf
250         reference-manual/plots/drift-all.pdf
251         reference-manual/plots/f-angle.pdf
252         reference-manual/plots/f-bond.pdf
253         reference-manual/plots/fp-highres.pdf
254         reference-manual/plots/int-mat.pdf
255         reference-manual/plots/mdpar.pdf
256         reference-manual/plots/parsort.pdf
257         reference-manual/plots/ring.pdf
258         reference-manual/plots/shiftf.pdf
259         # Algorithms chapter
260         reference-manual/algorithms/plots/dd-cells.pdf
261         reference-manual/algorithms/plots/dd-tric.pdf
262         reference-manual/algorithms/plots/flowchart.pdf
263         reference-manual/algorithms/plots/free1.pdf
264         reference-manual/algorithms/plots/free2.pdf
265         reference-manual/algorithms/plots/leapfrog.pdf
266         reference-manual/algorithms/plots/lincs.pdf
267         reference-manual/algorithms/plots/maxwell.pdf
268         reference-manual/algorithms/plots/mpmd-pme.pdf
269         reference-manual/algorithms/plots/nstric.pdf
270         reference-manual/algorithms/plots/par-lincs2.pdf
271         reference-manual/algorithms/plots/pbctric.pdf
272         reference-manual/algorithms/plots/rhododec.pdf
273         reference-manual/algorithms/plots/truncoct.pdf
274         reference-manual/algorithms/plots/verlet-drift.pdf
275         # Interaction functions chapter
276         reference-manual/functions/plots/angle.pdf
277         reference-manual/functions/plots/bstretch.pdf
278         reference-manual/functions/plots/chain.pdf
279         reference-manual/functions/plots/dummies.pdf
280         reference-manual/functions/plots/f-bham.pdf
281         reference-manual/functions/plots/fbposres.pdf
282         reference-manual/functions/plots/f-dih.pdf
283         reference-manual/functions/plots/f-dr.pdf
284         reference-manual/functions/plots/fig-02.pdf
285         reference-manual/functions/plots/fig-04.pdf
286         reference-manual/functions/plots/f-imps.pdf
287         reference-manual/functions/plots/f-lj.pdf
288         reference-manual/functions/plots/f-morse.pdf
289         reference-manual/functions/plots/f-pr.pdf
290         reference-manual/functions/plots/f-rbs.pdf
291         reference-manual/functions/plots/ring-imp.pdf
292         reference-manual/functions/plots/softcore.pdf
293         reference-manual/functions/plots/subst-im.pdf
294         reference-manual/functions/plots/tetra-im.pdf
295         reference-manual/functions/plots/vcrf.pdf
296         reference-manual/functions/plots/vsite-4fdn.pdf
297         # Special topics chapter
298         reference-manual/special/plots/awh-invN.pdf
299         reference-manual/special/plots/awh-pmfs.pdf
300         reference-manual/special/plots/awh-sampleweights.pdf
301         reference-manual/special/plots/awh-traj.pdf
302         reference-manual/special/plots/compelsetup.pdf
303         reference-manual/special/plots/dumaro.pdf
304         reference-manual/special/plots/dumtypes.pdf
305         reference-manual/special/plots/equipotential.pdf
306         reference-manual/special/plots/field.pdf
307         reference-manual/special/plots/gaussians.pdf
308         reference-manual/special/plots/lambda-values.pdf
309         reference-manual/special/plots/pulldirrel.pdf
310         reference-manual/special/plots/pull.pdf
311         reference-manual/special/plots/pullref.pdf
312         reference-manual/special/plots/rotation.pdf
313         # Analysis chapter
314         reference-manual/analysis/plots/dih-def.pdf
315         reference-manual/analysis/plots/distm.pdf
316         reference-manual/analysis/plots/dssp.pdf
317         reference-manual/analysis/plots/hbond-insert.pdf
318         reference-manual/analysis/plots/hbond.pdf
319         reference-manual/analysis/plots/hpr-wheel.pdf
320         reference-manual/analysis/plots/msdwater.pdf
321         reference-manual/analysis/plots/ngmxdump.pdf
322         reference-manual/analysis/plots/phipsi.pdf
323         reference-manual/analysis/plots/rama.pdf
324         reference-manual/analysis/plots/rdfO-O.pdf
325         reference-manual/analysis/plots/rdf.pdf
326         reference-manual/analysis/plots/sgangle.pdf 
327         )
328     set(SPHINX_SOURCE_FILES
329         index.rst
330         download.rst
331         links.dat
332         dev-manual/build-system.rst
333         dev-manual/change-management.rst
334         dev-manual/commitstyle.rst
335         dev-manual/containers.rst
336         dev-manual/documentation-generation.rst
337         dev-manual/contribute.rst
338         dev-manual/doxygen.rst
339         dev-manual/error-handling.rst
340         dev-manual/formatting.rst
341         dev-manual/gitlab-ci.rst
342         dev-manual/gmxtree.rst
343         dev-manual/includestyle.rst
344         dev-manual/index.rst
345         dev-manual/infrastructure.rst
346         dev-manual/jenkins.rst
347         dev-manual/known-issues.rst
348         dev-manual/language-features.rst
349         dev-manual/naming.rst
350         dev-manual/overview.rst
351         dev-manual/physical_validation.rst
352         dev-manual/redmine-states.png
353         dev-manual/relocatable-binaries.rst
354         dev-manual/reportstyle.rst
355         dev-manual/style.rst
356         dev-manual/testutils.rst
357         dev-manual/tools.rst
358         dev-manual/code-formatting.rst
359         fragments/doxygen-links.rst
360         how-to/index.rst
361         how-to/beginners.rst
362         how-to/topology.rst
363         how-to/special.rst
364         how-to/visualize.rst
365         install-guide/index.rst
366         release-notes/index.rst
367         release-notes/2022/major/highlights.rst
368         release-notes/2022/major/features.rst
369         release-notes/2022/major/performance.rst
370         release-notes/2022/major/tools.rst
371         release-notes/2022/major/bugs-fixed.rst
372         release-notes/2022/major/removed-functionality.rst
373         release-notes/2022/major/deprecated-functionality.rst
374         release-notes/2022/major/portability.rst
375         release-notes/2022/major/miscellaneous.rst
376         release-notes/2022/major/api.rst
377         release-notes/2021/2021.3.rst
378         release-notes/2021/2021.2.rst
379         release-notes/2021/2021.1.rst
380         release-notes/2021/major/highlights.rst
381         release-notes/2021/major/features.rst
382         release-notes/2021/major/performance.rst
383         release-notes/2021/major/tools.rst
384         release-notes/2021/major/bugs-fixed.rst
385         release-notes/2021/major/removed-functionality.rst
386         release-notes/2021/major/deprecated-functionality.rst
387         release-notes/2021/major/portability.rst
388         release-notes/2021/major/miscellaneous.rst
389         release-notes/2020/2020.1.rst
390         release-notes/2020/2020.2.rst
391         release-notes/2020/2020.3.rst
392         release-notes/2020/2020.4.rst
393         release-notes/2020/2020.5.rst
394         release-notes/2020/2020.6.rst
395         release-notes/2020/major/highlights.rst
396         release-notes/2020/major/features.rst
397         release-notes/2020/major/performance.rst
398         release-notes/2020/major/tools.rst
399         release-notes/2020/major/bugs-fixed.rst
400         release-notes/2020/major/removed-functionality.rst
401         release-notes/2020/major/deprecated-functionality.rst
402         release-notes/2020/major/portability.rst
403         release-notes/2020/major/miscellaneous.rst
404         release-notes/2019/2019.6.rst
405         release-notes/2019/2019.5.rst
406         release-notes/2019/2019.4.rst
407         release-notes/2019/2019.3.rst
408         release-notes/2019/2019.2.rst
409         release-notes/2019/2019.1.rst
410         release-notes/2019/major/highlights.rst
411         release-notes/2019/major/features.rst
412         release-notes/2019/major/performance.rst
413         release-notes/2019/major/tools.rst
414         release-notes/2019/major/bugs-fixed.rst
415         release-notes/2019/major/removed-functionality.rst
416         release-notes/2019/major/deprecated-functionality.rst
417         release-notes/2019/major/portability.rst
418         release-notes/2019/major/miscellaneous.rst
419         release-notes/2018/2018.7.rst
420         release-notes/2018/2018.6.rst
421         release-notes/2018/2018.5.rst
422         release-notes/2018/2018.4.rst
423         release-notes/2018/2018.3.rst
424         release-notes/2018/2018.2.rst
425         release-notes/2018/2018.1.rst
426         release-notes/2018/major/highlights.rst
427         release-notes/2018/major/features.rst
428         release-notes/2018/major/performance.rst
429         release-notes/2018/major/tools.rst
430         release-notes/2018/major/bugs-fixed.rst
431         release-notes/2018/major/removed-features.rst
432         release-notes/2018/major/portability.rst
433         release-notes/2018/major/miscellaneous.rst
434         release-notes/2016/2016.5.rst
435         release-notes/2016/2016.4.rst
436         release-notes/2016/2016.3.rst
437         release-notes/2016/2016.2.rst
438         release-notes/2016/2016.1.rst
439         release-notes/2016/major/highlights.rst
440         release-notes/2016/major/new-features.rst
441         release-notes/2016/major/performance.rst
442         release-notes/2016/major/tools.rst
443         release-notes/2016/major/bugs-fixed.rst
444         release-notes/2016/major/removed-features.rst
445         release-notes/2016/major/miscellaneous.rst
446         release-notes/older/index.rst
447         # the entry for user-guide/index.rst should not appear here,
448         # as it will be included conditionally further down depending on
449         # if the documentation will be build with the full reference
450         # manual or without.
451         user-guide/cmdline.rst
452         user-guide/deprecation-policy.rst
453         user-guide/environment-variables.rst
454         user-guide/faq.rst
455         user-guide/floating-point.rst
456         user-guide/flow.rst
457         user-guide/force-fields.rst
458         user-guide/getting-started.rst
459         user-guide/index.rst
460         user-guide/known-issues.rst
461         user-guide/managing-simulations.rst
462         user-guide/mdp-options.rst
463         user-guide/mdrun-features.rst
464         user-guide/mdrun-performance.rst
465         user-guide/run-time-errors.rst
466         user-guide/security.rst
467         user-guide/system-preparation.rst
468         user-guide/terminology.rst
469         )
470
471     include(SphinxMacros.cmake)
472     gmx_init_sphinx_setup(${SPHINX_INPUT_DIR})
473
474     # set temporary variables for doi inclusion
475     # into the manual, plain string + some wrapping
476     # for release builds, and dummy string for non-release
477     # builds
478     if("${GMX_MANUAL_DOI}" STREQUAL "")
479       # empty string means no doi, set dummy text
480       set(GMX_MANUAL_DOI_STRING "This is not a release build of GROMACS, so please reference")
481       set(GMX_MANUAL_DOI_STRING "${GMX_MANUAL_DOI_STRING} one of the GROMACS papers and the base release of the manual.")
482     else()
483       # release version, set plain old boring string
484       set(GMX_MANUAL_DOI_STRING "Please reference this documentation as https://doi.org/${GMX_MANUAL_DOI}.")
485     endif()
486     # same for source doi, but modify the text
487     if("${GMX_SOURCE_DOI}" STREQUAL "")
488       # empty string means no release build
489       set(GMX_SOURCE_DOI_STRING "This is not a release build of GROMACS. Please reference one of the")
490       set(GMX_SOURCE_DOI_STRING "${GMX_SOURCE_DOI_STRING} GROMACS papers, as well as the base release that this version is built from.")
491       set(GMX_SOURCE_DOI_STRING "${GMX_SOURCE_DOI_STRING} Also, please state what modifcations have been performed or where the version")
492       set(GMX_SOURCE_DOI_STRING "${GMX_SOURCE_DOI_STRING} was sourced from.")
493     else()
494       # release version, give them a doi url string
495       set(GMX_SOURCE_DOI_STRING "To cite the source code for this release, please cite")
496       set(GMX_SOURCE_DOI_STRING "${GMX_SOURCE_DOI_STRING} https://doi.org/${GMX_SOURCE_DOI}.")
497     endif()
498
499     if(IMAGE_CONVERT_POSSIBLE)
500         set(IMAGE_CONVERT_STRING "possible")
501     else()
502         set(IMAGE_CONVERT_STRING "impossible")
503     endif()
504
505     set(SPHINX_CONFIG_FILE ${SPHINX_INPUT_DIR}/conf.py)
506     if (GMX_PYTHON_PACKAGE)
507         set(GMXAPI_PYTHON_STAGING_DIR ${CMAKE_BINARY_DIR}/python_packaging/src/gmxapi_staging)
508         # TODO: Resolve circular reference. We would like to get the CMake build-time directory for
509         # the gmxapi Python package from the _gmxapi target, as we do when building sample_restraint.
510         # Instead of the above hard-coded path, how can we do
511         # get_target_property(GMXAPI_PYTHON_STAGING_DIR _gmxapi staging_dir)
512         # in this context?
513     endif ()
514
515     gmx_configure_version_file(
516         conf.cmakein.py ${SPHINX_CONFIG_FILE}
517         EXTRA_VARS
518             CMAKE_MINIMUM_REQUIRED_VERSION
519             EXPECTED_DOXYGEN_VERSION
520             EXPECTED_SPHINX_VERSION
521             GMX_ADMIN_DIR
522             GMX_LMFIT_REQUIRED_VERSION
523             GMX_MANUAL_DOI_STRING
524             GMX_TNG_MINIMUM_REQUIRED_VERSION
525             GMX_SOURCE_DOI_STRING
526             GMXAPI_PYTHON_STAGING_DIR
527             IMAGE_CONVERT_STRING
528             REGRESSIONTEST_VERSION
529             REQUIRED_CUDA_COMPUTE_CAPABILITY
530             REQUIRED_CUDA_VERSION
531             REQUIRED_OPENCL_MIN_VERSION
532             REGRESSIONTEST_MD5SUM_STRING
533             RELENG_PATH
534             SOURCE_MD5SUM
535             SPHINX_EXTENSION_PATH
536         COMMENT "Configuring Sphinx configuration file")
537     gmx_add_sphinx_input_file(${SPHINX_CONFIG_FILE})
538     gmx_add_sphinx_source_files(FILES ${SPHINX_SOURCE_FILES})
539     if (EXISTS ${RELENG_PATH}/docs/FileList.cmake)
540         include(${RELENG_PATH}/docs/FileList.cmake)
541         gmx_add_sphinx_source_files(
542             FROM ${RELENG_PATH}/docs TO dev-manual/releng PREFIX releng/docs/
543             FILES ${RELENG_SPHINX_FILES})
544     else()
545         gmx_add_sphinx_source_files(FILES
546             dev-manual/releng/index.rst
547             )
548     endif()
549
550     gmx_add_sphinx_source_files(
551             FILES
552             gmxapi/index.rst
553             gmxapi/userguide/install.rst
554             gmxapi/userguide/usage.rst
555             gmxapi/userguide/userguide.rst
556     )
557
558     if (GMX_PYTHON_PACKAGE)
559         gmx_add_sphinx_source_files(
560             FILES
561             gmxapi/userguide/pythonreference.rst
562             )
563     else()
564         gmx_add_sphinx_source_files(
565             FROM ${CMAKE_CURRENT_SOURCE_DIR}/gmxapi/userguide-stub
566             TO gmxapi/userguide/ 
567             FILES pythonreference.rst 
568             )
569     endif ()
570
571     gmx_add_sphinx_source_files(
572             FILES
573             nblib/index.rst
574             nblib/guide-to-writing-MD-programs.rst
575     )
576
577     gmx_add_sphinx_source_files(
578         FILES
579         ${REFERENCEMANUAL_SPHINX_FILES_GENERAL})
580     if (IMAGE_CONVERT_POSSIBLE)
581         gmx_add_sphinx_source_files(
582             FILES
583             ${REFERENCEMANUAL_SPHINX_FILES_WITH_IMAGES}
584             ${REFERENCEMANUAL_IMAGE_FILES})
585         gmx_add_sphinx_image_conversion_files(
586             FILES
587             ${REFERENCEMANUAL_IMAGE_FILES})
588     endif()
589     gmx_add_sphinx_input_target(sphinx-input-rst)
590     gmx_add_sphinx_image_conversion_target(sphinx-image-conversion)
591     add_custom_target(sphinx-input)
592     add_dependencies(sphinx-input sphinx-input-rst sphinx-image-conversion)
593     if (GMX_PYTHON_PACKAGE)
594         add_dependencies(sphinx-input _gmxapi)
595     endif()
596     # Remove other rst files from the build tree, since they confuse Sphinx.
597     # Skip generated files in onlinehelp/, and fragments.
598     # The latter do not cause issues with obsolete files, as they
599     # are not considered as Sphinx input files, but will only be
600     # included using an explicit .. include::.
601     gmx_remove_obsolete_sphinx_input_files("^(onlinehelp|fragments)/.*\\\\.rst$")
602
603     # TODO: Make this remove obsolete .rst files.
604     # TODO: This does not work in cross-compilation scenarios; disable up to
605     # the necessary level.
606     gmx_add_custom_output_target(sphinx-programs OUTPUT STAMP
607         COMMAND ${CMAKE_COMMAND} -E make_directory onlinehelp
608         COMMAND gmx -quiet help -export rst
609         DEPENDS gmx
610         WORKING_DIRECTORY ${SPHINX_INPUT_DIR}
611         COMMENT "Generating reStructuredText help")
612     # This dependency ensures that the directories exist before the
613     # executable tries to write things there.
614     add_dependencies(sphinx-programs sphinx-input)
615
616     # Make the INSTALL file for CPack for the tarball. This gets put
617     # into the tarball via the CPack rules below, which requires that
618     # the INSTALL file is in a separate directory by itself.
619     set(TEXT_INSTALL_GUIDE_OUTPUT_DIR "install-guide/text")
620     add_custom_target(install-guide
621         COMMAND
622             ${SPHINX_EXECUTABLE}
623             -q -b text
624             -w sphinx-install.log
625             -d ${CMAKE_CURRENT_BINARY_DIR}/install-guide/_doctrees
626             -c ${SPHINX_INPUT_DIR}
627             "${SPHINX_INPUT_DIR}/install-guide"
628             "${TEXT_INSTALL_GUIDE_OUTPUT_DIR}"
629         COMMAND
630             ${CMAKE_COMMAND} -E rename
631             ${TEXT_INSTALL_GUIDE_OUTPUT_DIR}/index.txt
632             ${TEXT_INSTALL_GUIDE_OUTPUT_DIR}/INSTALL
633         WORKING_DIRECTORY
634             ${CMAKE_CURRENT_BINARY_DIR}
635         COMMENT "Building INSTALL with Sphinx"
636         VERBATIM
637         )
638     add_dependencies(install-guide sphinx-input)
639     gmx_cpack_add_generated_source_directory(install-guide/text DESTINATION /)
640
641     # Sphinx cache with pickled ReST documents
642     set(SPHINX_CACHE_DIR "${CMAKE_CURRENT_BINARY_DIR}/_doctrees")
643     set(SPHINX_CONFIG_OVERRIDES "")
644     if (GMX_DEVELOPER_BUILD)
645         set(SPHINX_CONFIG_OVERRIDES "-Dtodo_include_todos=1")
646     endif()
647     add_custom_target(webpage-sphinx
648         DEPENDS sphinx-programs
649         DEPENDS sphinx-input
650         DEPENDS sphinx-image-conversion
651         DEPENDS manual
652         COMMAND
653             ${CMAKE_COMMAND} -E make_directory ${SPHINX_INPUT_DIR}/_static
654         COMMAND
655             ${SPHINX_EXECUTABLE}
656             -q -b html
657             -w sphinx-html.log
658             -d "${SPHINX_CACHE_DIR}"
659             ${SPHINX_CONFIG_OVERRIDES}
660             "${SPHINX_INPUT_DIR}"
661             "${HTML_OUTPUT_DIR}"
662         WORKING_DIRECTORY
663             ${CMAKE_CURRENT_BINARY_DIR}
664         COMMENT "Building HTML documentation with Sphinx"
665         VERBATIM
666         )
667
668     add_custom_target(man
669         COMMAND
670             ${SPHINX_EXECUTABLE}
671             -q -b man
672             -w sphinx-man.log
673             -d ${SPHINX_CACHE_DIR}
674             -t do_man
675             ${SPHINX_INPUT_DIR}
676             ${CMAKE_CURRENT_BINARY_DIR}/man
677         COMMENT "Building man pages with Sphinx"
678         VERBATIM)
679     add_dependencies(man sphinx-input sphinx-programs)
680     if (GMX_BUILD_HELP)
681         # If requested, install the man pages built by the 'man' target
682         # created above.  Nothing will be installed if the user did not
683         # manually build the target.
684         set(MAN_PAGE_DIR ${CMAKE_CURRENT_BINARY_DIR})
685     endif()
686
687 else()
688     set(MANUAL_BUILD_IS_POSSIBLE OFF)
689     set(MANUAL_BUILD_NOT_POSSIBLE_REASON "Sphinx expected minimum version ${EXPECTED_SPHINX_VERSION} is not available")
690
691     add_custom_target(webpage-sphinx
692         COMMAND ${CMAKE_COMMAND} -E echo
693             "HTML pages cannot be built because Sphinx expected minimum version ${EXPECTED_SPHINX_VERSION} is not available"
694         VERBATIM)
695     add_custom_target(install-guide
696         COMMAND ${CMAKE_COMMAND} -E echo
697             "INSTALL cannot be built because Sphinx expected minimum version ${EXPECTED_SPHINX_VERSION} is not available"
698         VERBATIM)
699     add_custom_target(man
700         COMMAND ${CMAKE_COMMAND} -E echo
701             "man pages cannot be built because Sphinx expected minimum version ${EXPECTED_SPHINX_VERSION} is not available"
702         VERBATIM)
703     add_custom_target(sphinx-create-texman
704         COMMAND ${CMAKE_COMMAND} -E echo
705             "Cannot prepare LaTeX input files because Sphinx expected minimum version ${EXPECTED_SPHINX_VERSION} is not available"
706         VERBATIM)
707     add_custom_target(manual
708         COMMAND ${CMAKE_COMMAND} -E echo
709             "manual cannot be built because Sphinx expected minimum version ${EXPECTED_SPHINX_VERSION} is not available")
710 endif()
711
712 if (MAN_PAGE_DIR)
713     set(MAN_PAGE_DIR ${MAN_PAGE_DIR}/man)
714     # Trailing slash on directory is significant for
715     # install(DIRECTORY). See CMake docs.
716     install(DIRECTORY ${MAN_PAGE_DIR}/
717         DESTINATION ${CMAKE_INSTALL_MANDIR}/man1
718         COMPONENT man OPTIONAL
719         FILES_MATCHING PATTERN "*.1")
720 endif()
721 gmx_cpack_add_generated_source_directory(man)
722
723 # Determine whether we can build all the HTML pages and content linked from
724 # there.  If not, construct an informative message if the user tries to
725 # build the target; most people never need to know, unless they've asked for
726 # the webpage build.
727 set(HTML_BUILD_IS_POSSIBLE ON)
728 set(HTML_BUILD_NOT_POSSIBLE_REASON)
729 set(HTML_BUILD_WARNINGS)
730
731 # Next, turn it off if any of the preconditions are unsatisified
732 if (NOT Python3_Interpreter_FOUND)
733     set(HTML_BUILD_IS_POSSIBLE OFF)
734     set(HTML_BUILD_NOT_POSSIBLE_REASON "Python is required")
735 elseif (NOT SPHINX_FOUND)
736     # Hardly anything gets built if Sphinx is not available, so don't bother.
737     set(HTML_BUILD_IS_POSSIBLE OFF)
738     set(HTML_BUILD_NOT_POSSIBLE_REASON "Sphinx expected minimum version ${EXPECTED_SPHINX_VERSION} is required")
739 endif()
740 if (NOT MANUAL_BUILD_IS_POSSIBLE)
741     list(APPEND HTML_BUILD_WARNINGS
742          "Reference PDF manual was not built, so links to it do not work")
743 endif()
744 if (NOT DOXYGEN_EXECUTABLE)
745     list(APPEND HTML_BUILD_WARNINGS
746         "Doxygen was not available, so links to Doxygen do not work")
747 endif()
748 if (NOT DOXYGEN_DOT_EXECUTABLE)
749     list(APPEND HTML_BUILD_WARNINGS
750         "dot/graphviz was not found, so some graphs are missing")
751 endif()
752
753 if (HTML_BUILD_IS_POSSIBLE)
754     set(_webpage_target_properties)
755     if (HTML_BUILD_WARNINGS)
756         list(APPEND _webpage_target_properties
757              COMMAND ${CMAKE_COMMAND} -E echo
758                  "webpage was built, but with the following limitations:")
759         foreach(_warning ${HTML_BUILD_WARNINGS})
760         list(APPEND _webpage_target_properties
761              COMMAND ${CMAKE_COMMAND} -E echo " - ${_warning}")
762         endforeach()
763     endif()
764
765     if (MANUAL_BUILD_IS_POSSIBLE)
766         # Make the PDF reference guide
767         # TODO Try to make the PDF arrive directly in ${HTML_OUTPUT_DIR}
768         # TODO Make this depend on the output of the manual build, so that the
769         # file actually gets copied multiple times.
770         set(_manual_target_location ${HTML_OUTPUT_DIR}/manual-${GMX_VERSION_STRING}.pdf)
771         add_custom_command(
772             OUTPUT ${_manual_target_location}
773             COMMAND ${CMAKE_COMMAND}
774                 -E remove -f ${_manual_target_location}
775             COMMAND ${CMAKE_COMMAND}
776                 -E copy ${CMAKE_CURRENT_BINARY_DIR}/manual/gromacs.pdf ${_manual_target_location}
777             DEPENDS manual
778             VERBATIM)
779         list(APPEND _webpage_target_properties
780              DEPENDS ${_manual_target_location})
781     endif()
782
783     # The Doxygen configuration in doxygen/Doxyfile-common.cmakein
784     # makes all the Doxygen output directly in
785     # ${HTML_OUTPUT_DIR}/doxygen (and makes the directory if it needs
786     # to).
787
788     # Add a top-level target that builds everything related to the webpage,
789     # for Jenkins (and possibly others) to use
790     add_custom_target(webpage ${_webpage_target_properties}
791         COMMENT "Building webpage"
792         VERBATIM)
793     add_dependencies(webpage webpage-sphinx doxygen-all)
794 else()
795     add_custom_target(webpage
796         COMMAND ${CMAKE_COMMAND} -E echo
797             "Cannot build webpage because ${HTML_BUILD_NOT_POSSIBLE_REASON}"
798         COMMENT "Webpage build not possible"
799         VERBATIM)
800 endif()