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      1 
      2 # Create sphinx target
      3 if (LLVM_ENABLE_SPHINX)
      4   message(STATUS "Sphinx enabled.")
      5   find_package(Sphinx REQUIRED)
      6   if (LLVM_BUILD_DOCS AND NOT TARGET sphinx)
      7     add_custom_target(sphinx ALL)
      8   endif()
      9 else()
     10   message(STATUS "Sphinx disabled.")
     11 endif()
     12 
     13 
     14 # Handy function for creating the different Sphinx targets.
     15 #
     16 # ``builder`` should be one of the supported builders used by
     17 # the sphinx-build command.
     18 #
     19 # ``project`` should be the project name
     20 function (add_sphinx_target builder project)
     21   set(SPHINX_BUILD_DIR "${CMAKE_CURRENT_BINARY_DIR}/${builder}")
     22   set(SPHINX_DOC_TREE_DIR "${CMAKE_CURRENT_BINARY_DIR}/_doctrees-${builder}")
     23   set(SPHINX_TARGET_NAME docs-${project}-${builder})
     24 
     25   if (SPHINX_WARNINGS_AS_ERRORS)
     26     set(SPHINX_WARNINGS_AS_ERRORS_FLAG "-W")
     27   else()
     28     set(SPHINX_WARNINGS_AS_ERRORS_FLAG "")
     29   endif()
     30 
     31   add_custom_target(${SPHINX_TARGET_NAME}
     32                     COMMAND ${SPHINX_EXECUTABLE}
     33                             -b ${builder}
     34                             -d "${SPHINX_DOC_TREE_DIR}"
     35                             -q # Quiet: no output other than errors and warnings.
     36                             ${SPHINX_WARNINGS_AS_ERRORS_FLAG} # Treat warnings as errors if requested
     37                             "${CMAKE_CURRENT_SOURCE_DIR}" # Source
     38                             "${SPHINX_BUILD_DIR}" # Output
     39                     COMMENT
     40                     "Generating ${builder} Sphinx documentation for ${project} into \"${SPHINX_BUILD_DIR}\"")
     41 
     42   # When "clean" target is run, remove the Sphinx build directory
     43   set_property(DIRECTORY APPEND PROPERTY
     44                ADDITIONAL_MAKE_CLEAN_FILES
     45                "${SPHINX_BUILD_DIR}")
     46 
     47   # We need to remove ${SPHINX_DOC_TREE_DIR} when make clean is run
     48   # but we should only add this path once
     49   get_property(_CURRENT_MAKE_CLEAN_FILES
     50                DIRECTORY PROPERTY ADDITIONAL_MAKE_CLEAN_FILES)
     51   list(FIND _CURRENT_MAKE_CLEAN_FILES "${SPHINX_DOC_TREE_DIR}" _INDEX)
     52   if (_INDEX EQUAL -1)
     53     set_property(DIRECTORY APPEND PROPERTY
     54                  ADDITIONAL_MAKE_CLEAN_FILES
     55                  "${SPHINX_DOC_TREE_DIR}")
     56   endif()
     57 
     58   if (LLVM_BUILD_DOCS)
     59     add_dependencies(sphinx ${SPHINX_TARGET_NAME})
     60 
     61     # Handle installation
     62     if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY)
     63       if (builder STREQUAL man)
     64         if (CMAKE_INSTALL_MANDIR)
     65           set(INSTALL_MANDIR ${CMAKE_INSTALL_MANDIR}/)
     66         else()
     67           set(INSTALL_MANDIR share/man/)
     68         endif()
     69         # FIXME: We might not ship all the tools that these man pages describe
     70         install(DIRECTORY "${SPHINX_BUILD_DIR}/" # Slash indicates contents of
     71                 COMPONENT "${project}-sphinx-man"
     72                 DESTINATION ${INSTALL_MANDIR}man1)
     73 
     74       elseif (builder STREQUAL html)
     75         string(TOUPPER "${project}" project_upper)
     76         set(${project_upper}_INSTALL_SPHINX_HTML_DIR "share/doc/${project}/html"
     77             CACHE STRING "HTML documentation install directory for ${project}")
     78 
     79         # '/.' indicates: copy the contents of the directory directly into
     80         # the specified destination, without recreating the last component
     81         # of ${SPHINX_BUILD_DIR} implicitly.
     82         install(DIRECTORY "${SPHINX_BUILD_DIR}/."
     83                 COMPONENT "${project}-sphinx-html"
     84                 DESTINATION "${${project_upper}_INSTALL_SPHINX_HTML_DIR}")
     85       else()
     86         message(WARNING Installation of ${builder} not supported)
     87       endif()
     88     endif()
     89   endif()
     90 endfunction()
     91