From fc10a3e486386fcea96b3b73097209a89cb9a4ee Mon Sep 17 00:00:00 2001
From: Takatoshi Kondo <redboltz@gmail.com>
Date: Thu, 9 Apr 2015 15:10:58 +0900
Subject: [PATCH] When a target system has 'dot', 'make doxygen' uses 'dot' on
 cmake.

---
 CMakeLists.txt | 24 ++++++++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 74bc1516..28e90507 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -213,24 +213,40 @@ 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