diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index 787b10cb7..ffa6c02fb 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -17,12 +17,11 @@ jobs:
     steps:
       - uses: ssciwr/doxygen-install@v1
       - uses: symbitic/install-cmake@master
-      - run: mkdir _build
-      - run: cd _build
-      - run: cmake ..
-      - run: cmake --build . --target doc
+      - run: cd doc
+      - run: cmake .
+      - run: cmake --build .
       - name: Deploy to GitHub Pages
         uses: peaceiris/actions-gh-pages@v3
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
-          publish_dir: ./docs/html # Build output to publish to the `gh-pages` branch
\ No newline at end of file
+          publish_dir: html # Build output to publish to the `gh-pages` branch
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index 6f4861ab9..de23b6dd1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -56,6 +56,13 @@ cmake_install.cmake
 config.h
 ginga.cbp
 *.DS_Store
+build.ninja
+.ninja_deps
+.ninja_log
+doc/CMakeDoxyfile.in
+doc/CMakeDoxygenDefaults.cmake
+doc/CMakeLists.txt
+doc/Makefile
 *.a
 *.bak
 *.core
diff --git a/CMakeLists.defs.txt b/CMakeLists.defs.txt
new file mode 100644
index 000000000..5f44dcd43
--- /dev/null
+++ b/CMakeLists.defs.txt
@@ -0,0 +1,11 @@
+cmake_minimum_required(VERSION 3.2)
+project(ginga)
+set(PACKAGE "ginga")
+set(PACKAGE_URL "http://github.com/telemidia/ginga")
+set(PACKAGE_BUGREPORT "bugs@telemidia.puc-rio.br")
+set(PACKAGE_DESCRIPTION "The Ginga iTV middleware")
+set(VERSION 1.0)
+set(PACKAGE_VERSION ${VERSION})
+set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/build-cmake/CMakeModules)
+set(DISPLAY_NAME "Ginga")
+set(DESCRIPTION "Ginga is the iTV middleware of the Japanese-Brazilian Digital TV System (ISDB-TB) and ITU-T Recommendation for IPTV services. Ginga is made up by a set of standardized technologies and Brazilian innovations that make it the most advanced middleware specification.")
\ No newline at end of file
diff --git a/CMakeLists.txt b/CMakeLists.txt
index fdbcda7cd..5c7b5670b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,17 +1,10 @@
 cmake_minimum_required(VERSION 3.2)
 project(ginga)
+include(CMakeLists.defs.txt)
 cmake_policy(SET CMP0087 NEW)
 set(CMAKE_CXX_STANDARD 11)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 add_compile_options(-Wno-deprecated-declarations)
-set(PACKAGE "ginga")
-set(PACKAGE_URL "http://github.com/telemidia/ginga")
-set(PACKAGE_BUGREPORT "bugs@telemidia.puc-rio.br")
-set(PACKAGE_DESCRIPTION "The Ginga iTV middleware")
-set(VERSION 1.0)
-set(PACKAGE_VERSION ${VERSION})
-set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/build-cmake/CMakeModules)
-
 # set all target runtime to CMAKE_BINARY_DIR
 set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})
 set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})
@@ -315,22 +308,6 @@ foreach(SRC ${GINGA_TESTS_SRC})
   endif()
 endforeach()
 
-# ------------------------
-# doxygen documentation
-# ------------------------
-find_package(Doxygen)
-
-if(DOXYGEN_FOUND)
-  set(top_builddir ${CMAKE_CURRENT_BINARY_DIR})
-  set(top_srcdir ${CMAKE_CURRENT_SOURCE_DIR})
-  configure_file(${CMAKE_CURRENT_SOURCE_DIR}/doc/Doxyfile.in
-    ${CMAKE_CURRENT_BINARY_DIR}/doc/Doxyfile @ONLY)
-  add_custom_target(doc ${DOXYGEN_EXECUTABLE} ${CMAKE_BINARY_DIR}/doc/Doxyfile
-    WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/doc
-    COMMENT "Generating API documentation with Doxygen" VERBATIM
-  )
-endif()
-
 # ------------------------
 # install
 # ------------------------
@@ -418,8 +395,6 @@ configure_file (${CMAKE_CURRENT_SOURCE_DIR}/build-cmake/config.h.in ${CMAKE_BINA
 # ------------------------
 # cpack
 # ------------------------
-set(DISPLAY_NAME "Ginga")
-set(DESCRIPTION "Ginga is the iTV middleware of the Japanese-Brazilian Digital TV System (ISDB-TB) and ITU-T Recommendation for IPTV services. Ginga is made up by a set of standardized technologies and Brazilian innovations that make it the most advanced middleware specification.")
 set(CPACK_PACKAGE_VENDOR "TeleMídia Lab/PUC-Rio")
 set(CPACK_PACKAGE_VERSION ${VERSION})
 set(CPACK_PACKAGE_CONTACT alan@telemidia.puc-rio.br)
diff --git a/doc/Doxyfile.in b/doc/Doxyfile.in
index ee7178c44..45d057ab3 100644
--- a/doc/Doxyfile.in
+++ b/doc/Doxyfile.in
@@ -7,20 +7,21 @@ GENERATE_MAN       = NO
 GENERATE_RTF       = NO
 GENERATE_TREEVIEW  = YES
 
-OUTPUT_DIRECTORY   = @top_builddir@/doc
-INPUT              = @top_srcdir@/doc/index.doxygen \
-                     @top_srcdir@/lib
+OUTPUT_DIRECTORY   = @DOC_DIR@
+INPUT              = index.doxygen @DOC_DIR@/../lib
 RECURSIVE          = YES
 FILE_PATTERNS      = *.cpp *.h
 EXCLUDE_PATTERNS   = */aux-gl.h */aux-glib.h */aux-lua.h */config.h
-IMAGE_PATH         = @top_srcdir@/doc
+IMAGE_PATH         = @DOC_DIR@
 HAVE_DOT           = YES
 MACRO_EXPANSION    = YES
 EXPAND_ONLY_PREDEF = YES
-INCLUDE_PATH       = @top_srcdir@/lib
+INCLUDE_PATH       = @DOC_DIR@/../lib
 PREDEFINED         = unused(x)=x
 EXTRACT_PRIVATE    = YES
 
-QUIET              = NO
-WARNINGS           = YES
-WARN_NO_PARAMDOC   = YES
+QUIET              = YES
+WARNINGS              = NO
+WARN_IF_UNDOCUMENTED  = NO
+WARN_IF_DOC_ERROR     = NO
+WARN_NO_PARAMDOC      = NO
\ No newline at end of file