pd-lua: Lua 5.4 compatibility.

externals/Makefile

@@ -1426,8 +1426,8 @@ pddp_clean:
 #------------------------------------------------------------------------------#
 # PDLUA
 
-LUA_CFLAGS = $(shell (pkg-config --cflags lua5.3 || pkg-config --cflags lua5.2 || pkg-config --cflags lua) 2> /dev/null)
-LUA_LIBS = $(shell (pkg-config --libs lua5.3 || pkg-config --libs lua5.2 || pkg-config --libs lua) 2> /dev/null)
+LUA_CFLAGS = $(shell (pkg-config --cflags lua5.4 || pkg-config --cflags lua5.3 || pkg-config --cflags lua5.2 || pkg-config --cflags lua) 2> /dev/null)
+LUA_LIBS = $(shell (pkg-config --libs lua5.4 || pkg-config --libs lua5.3 || pkg-config --libs lua5.2 || pkg-config --libs lua) 2> /dev/null)
 
 pdlua:
 	make -C $(externals_src)/pd-lua LUA_CFLAGS="$(LUA_CFLAGS)" LUA_LIBS="$(LUA_LIBS)" PD_PATH="$(pd_src)" PD_LIB="$(pd_src)/src" CFLAGS="$(CFLAGS)"