Merge pull request #269 from redboltz/add_dot_support

When a target system has 'dot', 'make doxygen' uses 'dot' on cmake.

Author: redboltz

CMakeLists.txt

@@ -220,24 +220,40 @@ INSTALL (FILES ${CMAKE_CURRENT_BINARY_DIR}/msgpack.pc DESTINATION ${CMAKE_INSTAL
 # Doxygen
 FIND_PACKAGE (Doxygen)
 IF (DOXYGEN_FOUND)
-    ADD_CUSTOM_TARGET (
-        doxygen_c
+    LIST (APPEND Doxyfile_c_CONTENT
         COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_SOURCE_DIR}/Doxyfile ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile_c
         COMMAND ${CMAKE_COMMAND} -E echo "FILE_PATTERNS      = *.h" >> ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile_c
         COMMAND ${CMAKE_COMMAND} -E echo "OUTPUT_DIRECTORY   = doc_c" >> ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile_c
         COMMAND ${CMAKE_COMMAND} -E echo "INPUT              = ${CMAKE_CURRENT_SOURCE_DIR}/include" >> ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile_c
         COMMAND ${CMAKE_COMMAND} -E echo "EXTRACT_ALL        = YES" >> ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile_c
         COMMAND ${CMAKE_COMMAND} -E echo "PROJECT_NAME       = \"MessagePack for C\"" >> ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile_c
+    )
+    IF (DOXYGEN_DOT_FOUND)
+        LIST (APPEND Doxyfile_c_CONTENT
+            COMMAND ${CMAKE_COMMAND} -E echo "HAVE_DOT       = YES" >> ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile_c
+        )
+    ENDIF ()
+    ADD_CUSTOM_TARGET (
+        doxygen_c
+        ${Doxyfile_c_CONTENT}
         COMMAND ${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile_c
         VERBATIM
     )
-    ADD_CUSTOM_TARGET (
-        doxygen_cpp
+    LIST (APPEND Doxyfile_cpp_CONTENT
         COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_CURRENT_SOURCE_DIR}/Doxyfile ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile_cpp
         COMMAND ${CMAKE_COMMAND} -E echo "FILE_PATTERNS      = *.hpp" >> ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile_cpp
         COMMAND ${CMAKE_COMMAND} -E echo "OUTPUT_DIRECTORY   = doc_cpp" >> ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile_cpp
         COMMAND ${CMAKE_COMMAND} -E echo "INPUT              = ${CMAKE_CURRENT_SOURCE_DIR}/include" >> ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile_cpp
         COMMAND ${CMAKE_COMMAND} -E echo "EXTRACT_ALL        = YES" >> ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile_cpp
+    )
+    IF (DOXYGEN_DOT_FOUND)
+        LIST (APPEND Doxyfile_cpp_CONTENT
+            COMMAND ${CMAKE_COMMAND} -E echo "HAVE_DOT       = YES" >> ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile_cpp
+        )
+    ENDIF ()
+    ADD_CUSTOM_TARGET (
+        doxygen_cpp
+        ${Doxyfile_cpp_CONTENT}
         COMMAND ${CMAKE_COMMAND} -E echo "PROJECT_NAME       = \"MessagePack for C++\"" >> ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile_cpp
         COMMAND ${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile_cpp
         VERBATIM