supports for doc language select with cmake

CMakeLists.txt

@@ -556,6 +556,13 @@ if ((NOT PIP_FREERTOS) AND (NOT CROSSTOOLS))
 		set(DOXY_EXAMPLE_PATH    "\"${CMAKE_CURRENT_SOURCE_DIR}/doc/examples\"")
 		set(DOXY_IMAGE_PATH      "\"${CMAKE_CURRENT_SOURCE_DIR}/doc/images\"")
 		set(DOXY_EXCLUDE         "\"${CMAKE_CURRENT_SOURCE_DIR}/libs/lua/3rd\"")
+		if ("x${DOC_LANG}" STREQUAL "x")
+			set(DOXY_OUTPUT_LANGUAGE English)
+			set(DOXY_OUTPUT_DIR      en)
+		else()
+			set(DOXY_OUTPUT_LANGUAGE ${DOC_LANG})
+			set(DOXY_OUTPUT_DIR      ${DOC_DIR})
+		endif()
 		if(DOXYGEN_DOT_EXECUTABLE)
 			string(REPLACE "\\" "" _DOT_PATH "${DOXYGEN_DOT_PATH}")
 			set(DOXY_DOT_PATH    "\"${_DOT_PATH}\"")

cmake/PIPDocumentation.cmake

@@ -1,7 +1,7 @@
 macro(ADD_DOCUMENTATION TARGET DOXYGEN_CONFIG_FILE)
 	if(DOXYGEN_FOUND)
 		configure_file("${PROJECT_SOURCE_DIR}/${DOXYGEN_CONFIG_FILE}" "${CMAKE_CURRENT_BINARY_DIR}/doxyfile-${TARGET}")
-		add_custom_target("genereate.${TARGET}" COMMAND ${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/doxyfile-${TARGET})
+		add_custom_target("genereate.${TARGET}" COMMAND "${CMAKE_COMMAND}" -E make_directory "${CMAKE_CURRENT_BINARY_DIR}/doc/html" COMMAND ${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/doxyfile-${TARGET})
 		add_custom_target("${TARGET}" COMMAND ${CMAKE_COMMAND} -D COMPONENT=doc -P cmake_install.cmake)
 		add_dependencies("${TARGET}" "genereate.${TARGET}")
 	else(DOXYGEN_FOUND)

doc/Doxyfile.in

@@ -91,7 +91,7 @@ ALLOW_UNICODE_NAMES    = NO
 # Ukrainian and Vietnamese.
 # The default value is: English.
 
-OUTPUT_LANGUAGE        = English
+OUTPUT_LANGUAGE        = ${DOXY_OUTPUT_LANGUAGE}
 
 # The OUTPUT_TEXT_DIRECTION tag is used to specify the direction in which all
 # documentation generated by doxygen is written. Doxygen will use this
@@ -1156,7 +1156,7 @@ GENERATE_HTML          = YES
 # The default directory is: html.
 # This tag requires that the tag GENERATE_HTML is set to YES.
 
-HTML_OUTPUT            = html
+HTML_OUTPUT            = html/${DOXY_OUTPUT_DIR}
 
 # The HTML_FILE_EXTENSION tag can be used to specify the file extension for each
 # generated HTML page (for example: .htm, .php, .asp).
@@ -1420,7 +1420,7 @@ GENERATE_QHP           = YES
 # the HTML output folder.
 # This tag requires that the tag GENERATE_QHP is set to YES.
 
-QCH_FILE               = pip.qch
+QCH_FILE               = pip_${DOXY_OUTPUT_DIR}.qch
 
 # The QHP_NAMESPACE tag specifies the namespace to use when generating Qt Help
 # Project output. For more information please see Qt Help Project / Namespace
@@ -2209,7 +2209,7 @@ TAGFILES               =
 # tag file that is based on the input files it reads. See section "Linking to
 # external documentation" for more information about the usage of tag files.
 
-GENERATE_TAGFILE       = html/pip.cfg
+GENERATE_TAGFILE       = doc/html/${DOXY_OUTPUT_DIR}/pip_${DOXY_OUTPUT_DIR}.cfg
 
 # If the ALLEXTERNALS tag is set to YES, all external class will be listed in
 # the class index. If set to NO, only the inherited external classes will be