mirror of
https://git.tartarus.org/simon/putty.git
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b01173c6b7
If Halibut is not available to build the docs, but on the other hand pre-built man pages already exist (e.g. because you unpacked a source zip file with them already provided), then docs/CMakeLists.txt creates a set of build rules that copy the pre-built man pages from the source directory to the build directory. However, if the source and build directories are the _same_, this creates a set of cyclic dependencies, i.e. files which depend directly on themselves. Some build tools (in particular 'ninja') will report this as an error. In that situation, the simple fix is to leave off the build rules completely: if the man pages are already where the build will want them to end up, there need not be any build rule to do anything about them.
178 lines
6.9 KiB
CMake
178 lines
6.9 KiB
CMake
cmake_minimum_required(VERSION 3.7)
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project(putty-documentation LANGUAGES)
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# This build script can be run standalone, or included as a
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# subdirectory of the main PuTTY cmake build system. If the latter, a
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# couple of things change: it has to set variables telling the rest of
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# the build system what manpages are available to be installed, and it
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# will change whether the 'make doc' target is included in 'make all'.
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include(FindGit)
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include(FindPerl)
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find_program(HALIBUT halibut)
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set(doc_outputs)
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set(manpage_outputs)
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if(HALIBUT AND PERL_EXECUTABLE)
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# Build the main manual, which requires not only Halibut, but also
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# Perl to run licence.pl to generate the copyright and licence
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# sections from the master data outside this directory.
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# If this is a source archive in which a fixed version.but was
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# provided, use that. Otherwise, infer one from the git checkout (if
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# possible).
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set(manual_dependencies) # extra target names to depend on
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if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/version.but)
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set(VERSION_BUT ${CMAKE_CURRENT_SOURCE_DIR}/version.but)
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else()
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set(VERSION_BUT ${CMAKE_CURRENT_BINARY_DIR}/cmake_version.but)
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set(INTERMEDIATE_VERSION_BUT ${VERSION_BUT}.tmp)
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add_custom_target(check_git_commit_for_doc
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BYPRODUCTS ${INTERMEDIATE_VERSION_BUT}
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COMMAND ${CMAKE_COMMAND}
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-DGIT_EXECUTABLE=${GIT_EXECUTABLE}
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-DOUTPUT_FILE=${INTERMEDIATE_VERSION_BUT}
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-DOUTPUT_TYPE=halibut
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-P ${CMAKE_CURRENT_SOURCE_DIR}/../cmake/gitcommit.cmake
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DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/../cmake/gitcommit.cmake
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WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/..
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COMMENT "Checking current git commit")
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add_custom_target(cmake_version_but
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BYPRODUCTS ${VERSION_BUT}
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COMMAND ${CMAKE_COMMAND} -E copy_if_different
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${INTERMEDIATE_VERSION_BUT} ${VERSION_BUT}
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DEPENDS check_git_commit_for_doc ${INTERMEDIATE_VERSION_BUT}
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COMMENT "Updating cmake_version.but")
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set(manual_dependencies ${manual_dependencies} cmake_version_but)
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endif()
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add_custom_target(copy_but
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BYPRODUCTS copy.but
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COMMAND ${PERL_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/../licence.pl
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--copyrightdoc -o copy.but
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DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/../licence.pl ${CMAKE_CURRENT_SOURCE_DIR}/../LICENCE)
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add_custom_target(licence_but
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BYPRODUCTS licence.but
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COMMAND ${PERL_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/../licence.pl
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--licencedoc -o licence.but
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DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/../licence.pl ${CMAKE_CURRENT_SOURCE_DIR}/../LICENCE)
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set(manual_dependencies ${manual_dependencies} copy_but licence_but)
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set(manual_sources
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${CMAKE_CURRENT_BINARY_DIR}/copy.but
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${CMAKE_CURRENT_SOURCE_DIR}/blurb.but
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${CMAKE_CURRENT_SOURCE_DIR}/intro.but
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${CMAKE_CURRENT_SOURCE_DIR}/gs.but
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${CMAKE_CURRENT_SOURCE_DIR}/using.but
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${CMAKE_CURRENT_SOURCE_DIR}/config.but
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${CMAKE_CURRENT_SOURCE_DIR}/pscp.but
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${CMAKE_CURRENT_SOURCE_DIR}/psftp.but
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${CMAKE_CURRENT_SOURCE_DIR}/plink.but
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${CMAKE_CURRENT_SOURCE_DIR}/pubkey.but
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${CMAKE_CURRENT_SOURCE_DIR}/pageant.but
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${CMAKE_CURRENT_SOURCE_DIR}/errors.but
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${CMAKE_CURRENT_SOURCE_DIR}/faq.but
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${CMAKE_CURRENT_SOURCE_DIR}/feedback.but
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${CMAKE_CURRENT_SOURCE_DIR}/pubkeyfmt.but
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${CMAKE_CURRENT_BINARY_DIR}/licence.but
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${CMAKE_CURRENT_SOURCE_DIR}/udp.but
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${CMAKE_CURRENT_SOURCE_DIR}/pgpkeys.but
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${CMAKE_CURRENT_SOURCE_DIR}/sshnames.but
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${CMAKE_CURRENT_SOURCE_DIR}/authplugin.but
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${CMAKE_CURRENT_SOURCE_DIR}/index.but
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${VERSION_BUT})
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# The HTML manual goes in a subdirectory, for convenience.
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set(html_dir ${CMAKE_CURRENT_BINARY_DIR}/html)
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file(MAKE_DIRECTORY ${html_dir})
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add_custom_command(OUTPUT ${html_dir}/index.html
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COMMAND ${HALIBUT} --html ${manual_sources}
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WORKING_DIRECTORY ${html_dir}
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DEPENDS ${manual_sources} ${manual_dependencies})
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list(APPEND doc_outputs ${html_dir}/index.html)
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# Windows help.
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file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/chmextra.but
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"\\cfg{chm-extra-file}{${CMAKE_CURRENT_SOURCE_DIR}/chm.css}{chm.css}\n")
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add_custom_command(OUTPUT putty.chm
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COMMAND ${HALIBUT} --chm chmextra.but ${manual_sources}
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WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
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DEPENDS ${manual_sources} ${manual_dependencies})
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list(APPEND doc_outputs putty.chm)
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# Plain text.
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add_custom_command(OUTPUT puttydoc.txt
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COMMAND ${HALIBUT} --text ${manual_sources}
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WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
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DEPENDS ${manual_sources} ${manual_dependencies})
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list(APPEND doc_outputs puttydoc.txt)
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endif()
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macro(register_manpage title section)
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list(APPEND manpage_outputs ${title}.${section})
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if(NOT CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
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# Only set this variable if there _is_ a parent scope.
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set(HAVE_MANPAGE_${title}_${section} ON PARENT_SCOPE)
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endif()
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endmacro()
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if(NOT HALIBUT)
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# If we don't have Halibut available to rebuild the man pages from
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# source, we must check whether the build and source directories
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# correspond, so as to suppress the build rules that copy them from
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# the source dir to the build dir. (Otherwise, someone unpacking
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# putty-src.zip and building on a system without Halibut will find
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# that there's a circular dependency in the makefile, which at least
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# Ninja complains about.)
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get_filename_component(DOCBUILDDIR ${CMAKE_CURRENT_BINARY_DIR} REALPATH)
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get_filename_component(DOCSRCDIR ${CMAKE_CURRENT_SOURCE_DIR} REALPATH)
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endif()
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macro(manpage title section)
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if(HALIBUT)
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add_custom_command(OUTPUT ${title}.${section}
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COMMAND ${HALIBUT} --man=${title}.${section}
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${CMAKE_CURRENT_SOURCE_DIR}/mancfg.but
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${CMAKE_CURRENT_SOURCE_DIR}/man-${title}.but
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DEPENDS
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mancfg.but man-${title}.but)
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register_manpage(${title} ${section})
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elseif(NOT (DOCBUILDDIR STREQUAL DOCSRCDIR)
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AND EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${title}.${section})
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add_custom_command(OUTPUT ${title}.${section}
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COMMAND ${CMAKE_COMMAND} -E copy_if_different
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${CMAKE_CURRENT_SOURCE_DIR}/${title}.${section} ${title}.${section}
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DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/${title}.${section})
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register_manpage(${title} ${section})
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endif()
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endmacro()
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manpage(putty 1)
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manpage(puttygen 1)
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manpage(plink 1)
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manpage(pscp 1)
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manpage(psftp 1)
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manpage(puttytel 1)
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manpage(pterm 1)
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manpage(pageant 1)
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manpage(psocks 1)
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manpage(psusan 1)
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add_custom_target(manpages ALL DEPENDS ${manpage_outputs})
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add_custom_target(doc DEPENDS ${doc_outputs} manpages)
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if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
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# If we're doing a cmake from just the doc subdir, we expect the
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# user to want to make all the documentation, including HTML and so
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# forth. (What else would be the point?)
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#
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# But if we're included from the main makefile, then by default we
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# only make the man pages (which are necessary for 'make install'),
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# and we leave everything else to a separate 'make doc' target which
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# the user can invoke if they need to.
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add_custom_target(doc-default ALL DEPENDS doc)
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endif()
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