Added build for Doxygen docs

Build workflow will generate html files from source if Doxygen is present.
Signed-off-by: Tammy Leino <[email protected]>

CMakeLists.txt

@@ -35,3 +35,7 @@ add_subdirectory (lib)
 if (WITH_APPS)
   add_subdirectory (apps)
 endif (WITH_APPS)
+
+if (WITH_DOC)
+  add_subdirectory (doc)
+endif (WITH_DOC)

cmake/depends.cmake

@@ -1,3 +1,7 @@
+if (WITH_DOC)
+  find_package (Doxygen)
+endif (WITH_DOC)
+
 if (WITH_LIBMETAL_FIND)
   find_package (Libmetal REQUIRED)
   collect (PROJECT_INC_DIRS "${LIBMETAL_INCLUDE_DIR}")

cmake/options.cmake

@@ -114,4 +114,6 @@ if (DEFINED RPMSG_BUFFER_SIZE)
   add_definitions( -DRPMSG_BUFFER_SIZE=${RPMSG_BUFFER_SIZE} )
 endif (DEFINED RPMSG_BUFFER_SIZE)
 
+option (WITH_DOC "Build with documentation" OFF)
+
 message ("-- C_FLAGS : ${CMAKE_C_FLAGS}")

doc/CMakeLists.txt

@@ -0,0 +1,17 @@
+if (DOXYGEN_FOUND)
+
+  configure_file (Doxyfile.in Doxyfile @ONLY)
+
+  add_custom_target (doc ALL
+    ${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile
+    WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+  )
+
+install (DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/html
+  DESTINATION share/doc/${PROJECT_NAME})
+install (FILES ${PROJECT_SOURCE_DIR}/README.md
+  DESTINATION share/doc/${PROJECT_NAME})
+install (FILES ${PROJECT_SOURCE_DIR}/LICENSE.md
+  DESTINATION share/doc/${PROJECT_NAME})
+
+endif (DOXYGEN_FOUND)