find_package(Doxygen)

set(doxydirlist "")
foreach(modname ${ULIB_SELECTED_MODULES})
    set(doxydirlist "${CMAKE_CURRENT_SOURCE_DIR}/src/${modname} ${doxydirlist}")
endforeach(modname)

file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/doxygen.cfg
     "PROJECT_NAME=${CMAKE_PROJECT_NAME}-${PACKAGE_VERSION}\n"
     "OUTPUT_DIRECTORY=${CMAKE_CURRENT_BINARY_DIR}\n"
     "CREATE_SUBDIRS=NO\n"
     "OUTPUT_LANGUAGE=English\n"
     "BRIEF_MEMBER_DESC=YES\n"
     "REPEAT_BRIEF=YES\n"
     "ALWAYS_DETAILED_SEC=NO\n"
     "INLINE_INHERITED_MEMB=NO\n"
     "STRIP_FROM_INC_PATH=${CMAKE_CURRENT_SOURCE_DIR}/src\n"
     "FULL_PATH_NAMES=YES\n"
     "STRIP_FROM_PATH=${CMAKE_CURRENT_SOURCE_DIR}/src\n"
     "SHORT_NAMES=NO\n"
     "MULTILINE_CPP_IS_BRIEF=NO\n"
     "INHERIT_DOCS=YES\n"
     "DISTRIBUTE_GROUP_DOC=NO\n"
     "OPTIMIZE_OUTPUT_FOR_C=YES\n"
     "SUBGROUPING=YES\n"
     "EXTRACT_ALL=YES\n"
     "EXTRACT_PRIVATE=NO\n"
     "EXTRACT_STATIC=NO\n"
     "EXTRACT_LOCAL_CLASSES=YES\n"
     "EXTRACT_LOCAL_METHODS=NO\n"
     "HIDE_UNDOC_MEMBERS=NO\n"
     "HIDE_UNDOC_CLASSES=NO\n"
     "HIDE_FRIEND_COMPOUNDS=NO\n"
     "HIDE_IN_BODY_DOCS=NO\n"
     "INTERNAL_DOCS=NO\n"
     "CASE_SENSE_NAMES=NO\n"
     "HIDE_SCOPE_NAMES=NO\n"
     "SHOW_INCLUDE_FILES=YES\n"
     "INLINE_INFO=YES\n"
     "SORT_MEMBER_DOCS=YES\n"
     "SORT_BRIEF_DOCS=NO\n"
     "SORT_BY_SCOPE_NAME=NO\n"
     "GENERATE_TODOLIST=YES\n"
     "GENERATE_TESTLIST=YES\n"
     "GENERATE_BUGLIST=YES\n"
     "GENERATE_DEPRECATEDLIST=YES\n"
     "MAX_INITIALIZER_LINES=30\n"
     "SHOW_USED_FILES=YES\n"
     "QUIET=YES\n"
     "WARNINGS=NO\n"
     "WARN_IF_UNDOCUMENTED=YES\n"
     "WARN_IF_DOC_ERROR=YES\n"
     "WARN_FORMAT=\"$file:$line: $text\"\n"
     "INPUT=${doxydirlist}\n"
     "FILE_PATTERNS=*.h *.hpp\n"
     "ENABLE_PREPROCESSING=YES\n"
     "MACRO_EXPANSION=YES\n"
     "RECURSIVE=YES\n"
     "EXCLUDE_SYMLINKS=NO\n"
     "FILTER_SOURCE_FILES=NO\n"
     "SOURCE_BROWSER=NO\n"
     "INLINE_SOURCES=NO\n"
     "STRIP_CODE_COMMENTS=YES\n"
     "REFERENCED_BY_RELATION=YES\n"
     "REFERENCES_RELATION=YES\n"
     "VERBATIM_HEADERS=YES\n"
     "ALPHABETICAL_INDEX=YES\n"
     "COLS_IN_ALPHA_INDEX=5\n"
     "GENERATE_HTML=YES\n"
     "HTML_OUTPUT=html\n"
     "HTML_FILE_EXTENSION=.html\n"
     "GENERATE_HTMLHELP=NO\n"
     "BINARY_TOC=NO\n"
     "TOC_EXPAND=NO\n"
     "DISABLE_INDEX=NO\n"
     "ENUM_VALUES_PER_LINE=4\n"
     "GENERATE_TREEVIEW=YES\n"
     "TREEVIEW_WIDTH=250\n"
     "GENERATE_LATEX=NO\n"
     "GENERATE_RTF=NO\n"
     "GENERATE_MAN=NO\n"
     "GENERATE_XML=NO\n"
     "GENERATE_AUTOGEN_DEF=NO\n"
     "GENERATE_PERLMOD=NO\n")

option(NODOXYGEN "Disable the creation of the API documentation")
if(NODOXYGEN OR (NOT DOXYGEN_FOUND))
    message("Doxygen is disabled or not installed")
else(NODOXYGEN OR (NOT DOXYGEN_FOUND))
    add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/html/index.html
                       COMMAND doxygen ${CMAKE_CURRENT_BINARY_DIR}/doxygen.cfg)

    add_custom_target(doxygen ALL DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/html/index.html)

    install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/html
            DESTINATION share/doc/${PACKAGE_NAME})
endif(NODOXYGEN OR (NOT DOXYGEN_FOUND))