Allow selection of specific translators to compile in at build time

BUILD.txt

@@ -1,7 +1,7 @@
 Doxygen uses cmake (http://www.cmake.org/) to build executables for various platforms.
 
 The first step is to create a build directory where the output should be stored.
-Doxygen directory can be fully build outside of the source tree.
+Doxygen can be fully build outside of the source tree.
 
 The second step is to invoke cmake from within the build directory with the desired generator.
 
@@ -27,11 +27,12 @@ Doxygen's cmake configuration provides a number of options:
 - build_wizard    Build the GUI frontend for doxygen.
 - build_app       Example showing how to embed doxygen in an application.
 - build_xmlparser Example showing how to parse doxygen's XML output.
-- build_search    Build external search tools (doxysearch and doxyindexer)
-- build_doc       Build user manual
+- build_search    Build external search tools (doxysearch and doxyindexer).
+- build_doc       Build user manual.
 - use_sqlite3     Add support for sqlite3 output [experimental].
 - use_libclang    Add support for libclang parsing.
-- win_static      Link with /MT in stead of /MD on windows
+- win_static      Link with /MT in stead of /MD on windows.
+- english_only    Only compile in support for the English language.
 
 An option can be turned on, by adding -D<option>=ON as a command line option, this can be
 done when generating the initial build files, but also afterwards, i.e. to enable building

CMakeLists.txt

@@ -75,17 +75,17 @@ set(CUSTOM_INCLUDE_DIR "" CACHE FILEPATH "Extra include path")
 set(CUSTOM_LINK_DIR "" CACHE FILEPATH "Extra library path")
 
 # gather lang codes for translation
+file(GLOB lang_files RELATIVE "${CMAKE_SOURCE_DIR}/src" "${CMAKE_SOURCE_DIR}/src/translator_??.h")
+set(lcodes "")
+foreach (_lang ${lang_files})
+  string(REGEX REPLACE "translator_(.*).h" "\\1" _lang_code ${_lang})
+  string(TOUPPER ${_lang_code} lang_code)
+  list(APPEND lcodes "${lang_code}")
+endforeach()
 if (english_only) # user only wants English
-  set(LANG_CODES "ENONLY")
-else() # find languages based on available translator files
-  set(LANG_CODES "")
-  file(GLOB lang_files RELATIVE "${CMAKE_SOURCE_DIR}/src" "${CMAKE_SOURCE_DIR}/src/translator_??.h")
-  foreach (_lang ${lang_files})
-    string(REGEX REPLACE "translator_(.*).h" "\\1" _lang_code ${_lang})
-    string(TOUPPER ${_lang_code} lang_code)
-    list(APPEND LANG_CODES "${lang_code}")
-  endforeach()
+  set(lcodes "ENONLY")
 endif()
+set(LANG_CODES ${lcodes} CACHE STRING "List of language codes for which translations should be compiled in")
 
 if (${CUSTOM_INCLUDE_DIR})
    include_directories(${CUSTOM_INCLUDE_DIR})