ceph/cmake/modules/CTags.cmake

   1 find_program(CTAGS_EXECUTABLE ctags)
   2
   3 function(add_tags name)
   4   cmake_parse_arguments(TAGS "" "SRC_DIR;TAG_FILE" "EXCLUDE_OPTS;EXCLUDES" ${ARGN})
   5   set(excludes ${TAGS_EXCLUDES})
   6   if(TAGS_EXCLUDE_OPTS)
   7     # always respect EXCLUDES_OPTS
   8     list(APPEND excludes ${TAGS_EXCLUDE_OPTS})
   9   else()
  10     # exclude the submodules under SRC_DIR by default
  11     execute_process(
  12       COMMAND git config --file .gitmodules --get-regexp path
  13       COMMAND awk "/${TAGS_SRC_DIR}/ { print $2 }"
  14       WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
  15       RESULT_VARIABLE result_code
  16       OUTPUT_VARIABLE submodules
  17       OUTPUT_STRIP_TRAILING_WHITESPACE)
  18     if(${result_code} EQUAL 0)
  19       string(REPLACE "${TAGS_SRC_DIR}/" "" submodules ${submodules})
  20       # cmake list uses ";" as the delimiter, so split the string manually
  21       # before iterating in it.
  22       string(REPLACE "\n" ";" submodules ${submodules})
  23       list(APPEND excludes ${submodules})
  24     endif()
  25   endif()
  26   message(STATUS "exclude following files under ${TAGS_SRC_DIR}: ${excludes}")
  27   # add_custom_target() accepts a list after "COMMAND" keyword, so we should
  28   # make exclude_arg a list, otherwise cmake will quote it. and ctags will
  29   # take it as as a single argument.
  30   foreach(exclude ${excludes})
  31     list(APPEND exclude_args --exclude=${exclude})
  32   endforeach()
  33   add_custom_target(${name}
  34     COMMAND ${CTAGS_EXECUTABLE} -R --c++-kinds=+p --fields=+iaS --extra=+q ${exclude_args}
  35     WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}/${TAGS_SRC_DIR}
  36     COMMENT "Building ctags file ${TAGS_TAG_FILE}"
  37     VERBATIM)
  38   set_source_files_properties(${CMAKE_SOURCE_DIR}/${TAGS_TAG_FILE} PROPERTIES
  39     GENERATED true)
  40 endfunction()