Update deprecated GTK code

.github/workflows/cmake.yml

@@ -19,7 +19,10 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
+    - name: Checkout Repository
+      uses: actions/checkout@v2
+      with:
+        submodules: recursive
     
     - name: Install system dependencies
       if: runner.os == 'Linux'

CMakeLists.txt

@@ -24,7 +24,7 @@ if(NOT WIN32)
   set(BoldWhite   "${Esc}[1;37m")
 endif()
 
-cmake_minimum_required(VERSION 2.8)
+cmake_minimum_required(VERSION 2.8...3.18)
 find_package(PkgConfig REQUIRED)
 pkg_search_module(GLIB REQUIRED glib-2.0)
 pkg_check_modules(GTK3 REQUIRED gtk+-3.0)

main.c

@@ -201,7 +201,7 @@ static int start_gui(int argc, char **argv)
 	application_domain = g_string_new(NULL);
 	g_string_printf(application_domain, "de.shimatta.gds_render_%s", _app_git_commit);
 
-	gapp = gtk_application_new(application_domain->str, G_APPLICATION_FLAGS_NONE);
+    gapp = gtk_application_new(application_domain->str, G_APPLICATION_DEFAULT_FLAGS);
 	g_string_free(application_domain, TRUE);
 
 	g_application_register(G_APPLICATION(gapp), NULL, NULL);

plugins/plugin-example/CMakeLists.txt

@@ -1,5 +1,5 @@
 project(pluginexample)
-cmake_minimum_required(VERSION 2.8)
+cmake_minimum_required(VERSION 2.8...3.18)
 find_package(PkgConfig REQUIRED)
 pkg_search_module(PYTHON REQUIRED python3)
 

test/CMakeLists.txt

@@ -22,7 +22,7 @@ if(NOT WIN32)
   set(BoldWhite   "${Esc}[1;37m")
 endif()
 
-cmake_minimum_required(VERSION 2.8)
+cmake_minimum_required(VERSION 2.8...3.18)
 find_package(PkgConfig REQUIRED)
 
 include_directories("${CMAKE_CURRENT_SOURCE_DIR}/catch-framework")