refact doxygen generator

CMakeLists.txt

@@ -75,27 +75,6 @@ target_include_directories(api INTERFACE "include/client")
 add_subdirectory(source)
 
 # docs 
-# https://vicrucann.github.io/tutorials/quick-cmake-doxygen/
-if(${BUILD_DOCS})
-    find_package(Doxygen)
-    if (DOXYGEN_FOUND)
-        # Build the doc
-        set(DOXYGEN_IN ${CMAKE_SOURCE_DIR}/docs/Doxyfile.in)
-        set(DOXYGEN_OUT ${CMAKE_BINARY_DIR}/Doxyfile)
-
-        configure_file(${DOXYGEN_IN} ${DOXYGEN_OUT} @ONLY)
-        message("Doxygen build start")
-
-        add_custom_target(
-            tdengine_doxygen ALL
-            COMMAND ${DOXYGEN_EXECUTABLE} ${DOXYGEN_OUT}
-            WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
-            COMMENT "Generating API doxumentation with Doxygen"
-            VERBATIM
-        )
-    else(DOXYGEN_FOUND)
-        message("Doxygen need to be installed to generate the doxygen documentation")
-    endif(DOXYGEN_FOUND)
-endif(${BUILD_DOCS})
+add_subdirectory(docs)
 
 # tests (TODO)

cmake/cmake.options

@@ -40,5 +40,5 @@ option(
 option(
     BUILD_DOCS
     "If use doxygen build documents" 
-    ON
+    OFF
 )
\ No newline at end of file

docs/CMakeLists.txt

+# Generate API documentation
+## https://vicrucann.github.io/tutorials/quick-cmake-doxygen/
+if(${BUILD_DOCS})
+    find_package(Doxygen)
+    if (DOXYGEN_FOUND)
+        # Build the doc
+        set(DOXYGEN_IN ${CMAKE_SOURCE_DIR}/docs/Doxyfile.in)
+        set(DOXYGEN_OUT ${CMAKE_BINARY_DIR}/Doxyfile)
+
+        configure_file(${DOXYGEN_IN} ${DOXYGEN_OUT} @ONLY)
+        message("Doxygen build start")
+
+        add_custom_target(
+            tdengine_doxygen ALL
+            COMMAND ${DOXYGEN_EXECUTABLE} ${DOXYGEN_OUT}
+            WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+            COMMENT "Generating API doxumentation with Doxygen"
+            VERBATIM
+        )
+    else(DOXYGEN_FOUND)
+        message("Doxygen need to be installed to generate the doxygen documentation")
+    endif(DOXYGEN_FOUND)
+endif(${BUILD_DOCS})
\ No newline at end of file

docs/Doxyfile.in

@@ -32,7 +32,7 @@ DOXYFILE_ENCODING      = UTF-8
 # title of most generated pages and in a few other places.
 # The default value is: My Project.
 
-PROJECT_NAME           = "TDengine"
+PROJECT_NAME           = @CMAKE_PROJECT_NAME@
 
 # The PROJECT_NUMBER tag can be used to enter a project or revision number. This
 # could be handy for archiving the generated documentation or if some version
@@ -829,7 +829,7 @@ WARN_LOGFILE           =
 # spaces. See also FILE_PATTERNS and EXTENSION_MAPPING
 # Note: If this tag is empty the current directory is searched.
 
-INPUT                  = include source
+INPUT                  = @CMAKE_SOURCE_DIR@/include @CMAKE_SOURCE_DIR@/source
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses