wayland: implement fall backs for proxy_get_version, proxy_marshall_constructor etc for older wayland versions

Author: cscd98

Makefile.common

@@ -1307,6 +1307,10 @@ ifeq ($(HAVE_WAYLAND), 1)
     DEF_FLAGS += $(LIBDECOR_CFLAGS)
  endif
 
+ ifeq ($(HAVE_WAYLAND_BACKPORT),1)
+    DEFINES += -DHAVE_WAYLAND_BACKPORT=1
+    OBJ += gfx/common/wayland_common_backport.o
+ endif
 endif
 
 # XML

Makefile.webos

@@ -136,6 +136,7 @@ HAVE_USERLAND ?= 0
 HAVE_WEBOS_EXTRA_PROTOS ?= 0
 HAVE_CORE_INFO_CACHE = 1
 HAVE_WAYLAND ?= 0
+HAVE_WAYLAND_BACKPORT ?= 1
 
 OS = Linux
 TARGET = retroarch
@@ -340,6 +341,9 @@ ipk: prebuild $(TARGET) sdl2
 	echo "$$APPINFO" > webos/dist/appinfo.json
 	cp -t webos/dist -vf $(TARGET) webos/icon160.png
 	cp -t webos/dist/lib -vf $(WEBOS_USR_LIB_DIR)/libstdc++.so.6
+ifeq ($(HAVE_XKBCOMMON), 1)
+	cp -t webos/dist/lib -vf $(WEBOS_USR_LIB_DIR)/libxkbcommon.so.0
+endif
 	cp -t webos/dist/lib -vf $(WEBOS_LIB_DIR)/libatomic.so.1
 ifeq ($(ADD_SDL2_LIB), 1)
 	cp -t webos/dist/lib -vf SDL/lib/libSDL2-2.0.so.0