build: compile Lua bytecode for embedded code

config.mk

@@ -17,5 +17,6 @@ CFLAGS  += -DPACKAGE_VERSION="\"$(MAJOR).$(MINOR)\"" -DPREFIX="\"$(PREFIX)\"" -D
 RM	:= rm -f
 LN      := ln -s
 XXD     ?= xxd
+LUAC    ?= luac
 INSTALL := install
 PYTHON  := python

daemon/daemon.mk

@@ -10,8 +10,9 @@ kresolved_SOURCES := \
 # Embed resources
 daemon/engine.o: daemon/lua/init.inc daemon/lua/config.inc
 %.inc: %.lua
-	@$(call quiet,XXD,$<) -i < $< > $@
-	@echo ', 0x00' >> $@
+	@$(call quiet,LUAC,$<) -o $<.out $<
+	@$(call quiet,XXD,$<) -i - < $<.out > $@
+	@$(RM) $<.out
 
 # Dependencies
 kresolved_DEPEND := $(libkresolve)

daemon/engine.c

@@ -192,6 +192,9 @@ int engine_cmd(struct engine *engine, const char *str)
 	return kr_ok();
 }
 
+/* Execute byte code */
+#define l_dobytecode(L, arr, len, name) \
+	(luaL_loadbuffer((L), (arr), (len), (name)) || lua_pcall((L), 0, LUA_MULTRET, 0))
 static int engine_loadconf(struct engine *engine)
 {
 	/* Init environment */