Doxygen: Rework documentation make targets

* new target doxygen-pdf which build the latex output
* Add doxygen-pdf to documentation target
* Move documentaiton target definition to doxygen's CMakeLists.txt

CMakeLists.txt

@@ -68,15 +68,19 @@ set(SOURCE
   ${LAYER_SELECTOR_SOURCES}
 )
 
-add_executable(${PROJECT_NAME} ${SOURCE} ${CMAKE_CURRENT_BINARY_DIR}/resources/resources.c)
+set(SOURCE_GENERATED
+  ${CMAKE_CURRENT_BINARY_DIR}/resources/resources.c
+)
+
+SET_SOURCE_FILES_PROPERTIES(${SOURCE_GENERATED} PROPERTIES GENERATED 1)
+
+add_executable(${PROJECT_NAME} ${SOURCE} ${SOURCE_GENERATED})
 add_dependencies(${PROJECT_NAME} glib-resources)
 add_dependencies(${PROJECT_NAME} version)
 add_dependencies(${PROJECT_NAME} translations)
-SET_SOURCE_FILES_PROPERTIES(${CMAKE_CURRENT_BINARY_DIR}/resources/resources.c PROPERTIES GENERATED 1)
+
 target_link_libraries(${PROJECT_NAME} ${GLIB_LDFLAGS} ${GTK3_LDFLAGS} ${CAIRO_LDFLAGS} m version ${CMAKE_DL_LIBS})
 install (TARGETS ${PROJECT_NAME} 
 	RUNTIME	
 		DESTINATION bin
 	)
-
-add_custom_target(documentation DEPENDS doxygen)

doxygen/CMakeLists.txt

@@ -1,10 +1,19 @@
 find_package(Doxygen)
 
 if (DOXYGEN_FOUND)
+	add_custom_target(documentation DEPENDS doxygen doxygen-pdf)
+
 	add_custom_target(doxygen
 		COMMAND ./build-doxygen.sh "${PROJECT_BINARY_DIR}"
 		WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
 		COMMENT "Generating documentation with Doxygen")
+
+	add_custom_target(
+	   doxygen-pdf
+	   COMMAND make
+	   WORKING_DIRECTORY "${PROJECT_BINARY_DIR}/latex"
+	   DEPENDS doxygen
+	   )
 else (DOXYGEN_FOUND)
 	message("Doxygen need to be installed to generate the doxygen documentation")
 endif (DOXYGEN_FOUND)