[waf] Fix building with lua

src/main/wscript

@@ -48,11 +48,16 @@ source = '''
 '''
 
 def configure(conf):
+	pass
+
+
+def build(bld):
 	global source
 
-	opts = Options.options
+	libs = ['glib', 'gthread', 'gmodule', 'ev']
 
-	if opts.lua:
+	if bld.env['USE_LUA'] == 1:
+		libs += ['lua']
 		source += '''
 			actions_lua.c
 			condition_lua.c
@@ -60,14 +65,6 @@ def configure(conf):
 			value_lua.c
 		'''
 
-
-def build(bld):
-	opts = Options.options
-	libs = ['glib', 'gthread', 'gmodule', 'ev']
-
-	if opts.lua:
-		libs += ['lua']
-
 	libcommon = bld.new_task_gen(
 		features = 'cc cprogram',
 	 	source = source,

wscript

@@ -101,6 +101,7 @@ def configure(conf):
 					conf.check(function_name='lua_setfield', header_name='lua.h', uselib='lua', mandatory=True)
 		conf.define('HAVE_LUA_H', 1)
 		conf.define('HAVE_LIBLUA', 1)
+		conf.define('USE_LUA', 1)
 	
 	if not opts.static:
 		conf.check(lib='dl', uselib_store='dl')