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llvm-mirror/cmake/modules/AddSphinxTarget.cmake
Michał Górny 9ebde1f21d [llvm] [docs] Do not require recommonmark for manpage build
Do not enforce recommonmark dependency if sphinx is called to build
manpages.  In order to do this, try to import recommonmark first
and do not configure it if it's not available.  Additionally, declare
a custom tags for the selected builder via CMake, and ignore
recommonmark import failure when 'man' target is used.

This will permit us to avoid the problematic recommonmark dependency
for the majority of Gentoo users that do not need to locally build
the complete documentation but want to have tool manpages.

Differential Revision: https://reviews.llvm.org/D83161
2020-07-07 20:59:02 +02:00

108 lines
4.1 KiB
CMake

# Create sphinx target
if (LLVM_ENABLE_SPHINX)
message(STATUS "Sphinx enabled.")
find_package(Sphinx REQUIRED)
if (LLVM_BUILD_DOCS AND NOT TARGET sphinx)
add_custom_target(sphinx ALL)
endif()
else()
message(STATUS "Sphinx disabled.")
endif()
# Handy function for creating the different Sphinx targets.
#
# ``builder`` should be one of the supported builders used by
# the sphinx-build command.
#
# ``project`` should be the project name
function (add_sphinx_target builder project)
cmake_parse_arguments(ARG "" "SOURCE_DIR" "" ${ARGN})
set(SPHINX_BUILD_DIR "${CMAKE_CURRENT_BINARY_DIR}/${builder}")
set(SPHINX_DOC_TREE_DIR "${CMAKE_CURRENT_BINARY_DIR}/_doctrees-${project}-${builder}")
set(SPHINX_TARGET_NAME docs-${project}-${builder})
if (SPHINX_WARNINGS_AS_ERRORS)
set(SPHINX_WARNINGS_AS_ERRORS_FLAG "-W")
else()
set(SPHINX_WARNINGS_AS_ERRORS_FLAG "")
endif()
if (NOT ARG_SOURCE_DIR)
set(ARG_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}")
endif()
add_custom_target(${SPHINX_TARGET_NAME}
COMMAND ${SPHINX_EXECUTABLE}
-b ${builder}
-d "${SPHINX_DOC_TREE_DIR}"
-q # Quiet: no output other than errors and warnings.
-t builder-${builder} # tag for builder
${SPHINX_WARNINGS_AS_ERRORS_FLAG} # Treat warnings as errors if requested
"${ARG_SOURCE_DIR}" # Source
"${SPHINX_BUILD_DIR}" # Output
COMMENT
"Generating ${builder} Sphinx documentation for ${project} into \"${SPHINX_BUILD_DIR}\"")
# When "clean" target is run, remove the Sphinx build directory
set_property(DIRECTORY APPEND PROPERTY
ADDITIONAL_MAKE_CLEAN_FILES
"${SPHINX_BUILD_DIR}")
# We need to remove ${SPHINX_DOC_TREE_DIR} when make clean is run
# but we should only add this path once
get_property(_CURRENT_MAKE_CLEAN_FILES
DIRECTORY PROPERTY ADDITIONAL_MAKE_CLEAN_FILES)
list(FIND _CURRENT_MAKE_CLEAN_FILES "${SPHINX_DOC_TREE_DIR}" _INDEX)
if (_INDEX EQUAL -1)
set_property(DIRECTORY APPEND PROPERTY
ADDITIONAL_MAKE_CLEAN_FILES
"${SPHINX_DOC_TREE_DIR}")
endif()
if (LLVM_BUILD_DOCS)
add_dependencies(sphinx ${SPHINX_TARGET_NAME})
# Handle installation
if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
if (builder STREQUAL man)
if (CMAKE_INSTALL_MANDIR)
set(INSTALL_MANDIR ${CMAKE_INSTALL_MANDIR}/)
else()
set(INSTALL_MANDIR share/man/)
endif()
# FIXME: We might not ship all the tools that these man pages describe
install(DIRECTORY "${SPHINX_BUILD_DIR}/" # Slash indicates contents of
COMPONENT "${project}-sphinx-man"
DESTINATION ${INSTALL_MANDIR}man1)
if(NOT LLVM_ENABLE_IDE)
add_llvm_install_targets("install-${SPHINX_TARGET_NAME}"
DEPENDS ${SPHINX_TARGET_NAME}
COMPONENT "${project}-sphinx-man")
endif()
elseif (builder STREQUAL html)
string(TOUPPER "${project}" project_upper)
set(${project_upper}_INSTALL_SPHINX_HTML_DIR "share/doc/${project}/html"
CACHE STRING "HTML documentation install directory for ${project}")
# '/.' indicates: copy the contents of the directory directly into
# the specified destination, without recreating the last component
# of ${SPHINX_BUILD_DIR} implicitly.
install(DIRECTORY "${SPHINX_BUILD_DIR}/."
COMPONENT "${project}-sphinx-html"
DESTINATION "${${project_upper}_INSTALL_SPHINX_HTML_DIR}")
if(NOT LLVM_ENABLE_IDE)
add_llvm_install_targets("install-${SPHINX_TARGET_NAME}"
DEPENDS ${SPHINX_TARGET_NAME}
COMPONENT "${project}-sphinx-html")
endif()
else()
message(WARNING Installation of ${builder} not supported)
endif()
endif()
endif()
endfunction()