build(deps): use submodules for wayland protocols

.gitmodules

@@ -58,3 +58,11 @@
 	path = third-party/ffmpeg-linux-powerpc64le
 	url = https://github.com/LizardByte/build-deps
 	branch = ffmpeg-linux-powerpc64le
+[submodule "third-party/wayland-protocols"]
+	path = third-party/wayland-protocols
+	url = https://gitlab.freedesktop.org/wayland/wayland-protocols
+	branch = main
+[submodule "third-party/wlr-protocols"]
+	path = third-party/wlr-protocols
+	url = https://gitlab.freedesktop.org/wlroots/wlr-protocols
+	branch = master

.readthedocs.yaml

@@ -16,6 +16,7 @@ build:
     - libboost-locale-dev  # required for rstcheck in cpp code block
   jobs:
     post_build:
+      - find ./third-party -iname "*.rst" -type f -delete  # find and delete rst files in third-party
       - rstcheck -r .  # lint rst files
       # - rstfmt --check --diff -w 120 .  # check rst formatting
 

cmake/compile_definitions/linux.cmake

@@ -127,8 +127,8 @@ endif()
 if(WAYLAND_FOUND)
     add_compile_definitions(SUNSHINE_BUILD_WAYLAND)
 
-    GEN_WAYLAND(xdg-output-unstable-v1)
-    GEN_WAYLAND(wlr-export-dmabuf-unstable-v1)
+    GEN_WAYLAND("wayland-protocols" "unstable/xdg-output" xdg-output-unstable-v1)
+    GEN_WAYLAND("wlr-protocols" "unstable" wlr-export-dmabuf-unstable-v1)
 
     include_directories(
             SYSTEM

cmake/macros/linux.cmake

@@ -1,21 +1,21 @@
 # linux specific macros
 
 # GEN_WAYLAND: args = `filename`
-macro(GEN_WAYLAND filename)
+macro(GEN_WAYLAND wayland_directory subdirectory filename)
     file(MAKE_DIRECTORY ${CMAKE_BINARY_DIR}/generated-src)
 
     message("wayland-scanner private-code \
-${CMAKE_SOURCE_DIR}/third-party/wayland-protocols/${filename}.xml \
+${CMAKE_SOURCE_DIR}/third-party/${wayland_directory}/${subdirectory}/${filename}.xml \
 ${CMAKE_BINARY_DIR}/generated-src/${filename}.c")
     message("wayland-scanner client-header \
-${CMAKE_SOURCE_DIR}/third-party/wayland-protocols/${filename}.xml \
+${CMAKE_SOURCE_DIR}/third-party/${wayland_directory}/${subdirectory}/${filename}.xml \
 ${CMAKE_BINARY_DIR}/generated-src/${filename}.h")
     execute_process(
             COMMAND wayland-scanner private-code
-            ${CMAKE_SOURCE_DIR}/third-party/wayland-protocols/${filename}.xml
+            ${CMAKE_SOURCE_DIR}/third-party/${wayland_directory}/${subdirectory}/${filename}.xml
             ${CMAKE_BINARY_DIR}/generated-src/${filename}.c
             COMMAND wayland-scanner client-header
-            ${CMAKE_SOURCE_DIR}/third-party/wayland-protocols/${filename}.xml
+            ${CMAKE_SOURCE_DIR}/third-party/${wayland_directory}/${subdirectory}/${filename}.xml
             ${CMAKE_BINARY_DIR}/generated-src/${filename}.h
 
             RESULT_VARIABLE EXIT_INT