Intent is to allow filtering by arbitrary flag combinations. This isn't actually working yet. No idea why. It seems it should. Tired though, so will look at it tomorrow.
MISC_DIR := $(call my-dir)
LOCAL_PATH := MISC_DIR
include $(MISC_DIR)/liblua/Android.mk
include $(MISC_DIR)/libphysfs/Android.mk
include $(MISC_DIR)/libphyslayer/Android.mk