当某个Android.mk中包含以下:app
LOCAL_PATH := $(call my-dir) include $(CLEAR_VARS) LOCAL_C_INCLUDES += \ $(LOCAL_PATH) \ $(JNI_H_INCLUDE) \
咱们想查看 $(LOCAL_PATH)或者$(JNI_H_INCLUDE)的值是什么.咱们能够在上面的内容最后,加一句spa
#这一句的意思是打印变量$(JNI_H_INCLUDE)的值
$(warning " JNI_H_INCLUDE = $(JNI_H_INCLUDE)")
咱们能够在命令行输入以下命令:命令行
mm >>temp.txt code
上面的命令会把一大堆打印,重定位到temp.txt文件中,并只显示blog
$(warning " JNI_H_INCLUDE = $(JNI_H_INCLUDE)")这一句中变量的值
输出以下:
packages/apps/swfDec_new/Android.mk:32: "JNI_H_INCLUDE = libnativehelper/include/nativehelper"class
这就告诉咱们$(JNI_H_INCLUDE )指向的路径是:libnativehelper/include/nativehelper变量
当搞不清楚Android.mk的变量指向那时,这个很方便。call