File vala-panel-extras-fix-build.patch of Package vala-panel-extras

--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,9 +6,17 @@ include(GNUInstallDirs)
 list (APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake)
 set (DATADIR "${CMAKE_INSTALL_PREFIX}/share/vala-panel")
 set (PKGDATADIR "${DATADIR}")
+if(EXISTS ${CMAKE_SOURCE_DIR}/cmake/VCMSubmodule.cmake)
+    include(${CMAKE_SOURCE_DIR}/cmake/VCMSubmodule.cmake)
+    use_vcm(${CMAKE_SOURCE_DIR}/cmake)
+else()
+    find_package(VCM REQUIRED NO_MODULE)
+    list(APPEND CMAKE_MODULE_PATH ${VCM_MODULE_PATH})
+endif()
 include(GitVersion)
 determine_fallback_version(${CMAKE_SOURCE_DIR}/cmake)
-include(FallbackVersion)
+include(${CMAKE_SOURCE_DIR}/cmake/FallbackVersion.cmake)
+include(Format)
 set (GETTEXT_PACKAGE "vala-panel-extras")
 set (RELEASE_NAME "Vala Panel extra items")
 set (PREFIX ${CMAKE_INSTALL_PREFIX})
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -17,7 +17,6 @@ OPTIONS
     --vapidir=${CMAKE_BINARY_DIR}/vapi
     --target-glib=2.40
     --gresources=${CMAKE_CURRENT_SOURCE_DIR}/internal.gresource.xml
-    --thread
 GENERATE_VAPI
     internal
 )
--- a/vapi/gio-addons-2.0.vapi
+++ b/vapi/gio-addons-2.0.vapi
@@ -30,11 +30,6 @@ namespace GLib
 {
     [CCode (cname = "g_slist_free_full")]
     public void slist_free_full(SList list, DestroyNotify? free_func);
-    namespace SignalHandler
-    {
-        [CCode (cname = "g_signal_handlers_disconnect_by_data")]
-        public void disconnect_by_data(Object instance, void* data);
-    }
     [CCode (cname = "GSettingsBackend")]
     public class KeyfileSettingsBackend : GLib.SettingsBackend
     {