如何建立与Android NDK的第三方库 [英] How to build third party libraries with Android NDK

问题描述

如何编译与Android NDK第三方库？我编译它实现了JNI函数作为一个共享库，它依赖于其他第三方LIB（HTK）的包装。我不知道如何设置makefile文件。以下不工作：

How can I compile third party libraries with the android NDK? I am compiling a wrapper which implements the JNI functions as a shared lib, which depends on another 3rd party lib (HTK). I don't know how to setup the makefile. The following does not work:

LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)

include HTKLib/Android.mk

LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)

LOCAL_MODULE    := gaitfuncs
LOCAL_SRC_FILES := gaitfuncs.c
%LOCAL_LDLIBS := -L$(SYSROOT)/usr/lib -llog

include $(BUILD_SHARED_LIBRARY)

第二的makefile应该再建该我的共享库链接到一个静态库。我怎样才能包括此子目录的makefile正常吗？这是做它的正确方法是什么？作为奖励：是否有通配符的LOCAL_SRC_FILES变量采取.C例如结尾的所有文件

The second makefile should then build a static lib which my shared lib links to. How can I include this subdir makefile properly? Is this the correct way of doing it? And as a bonus: Are there wildcards for the LOCAL_SRC_FILES variable to take all files ending in .c for example.

谢谢！

推荐答案

我找到了解决方法：

JNIPATH := $(call my-dir)
LOCAL_PATH := $(JNIPATH)

include $(call all-subdir-makefiles)

LOCAL_PATH := $(JNIPATH)
include $(CLEAR_VARS)

LOCAL_MODULE    := gaitfuncs
LOCAL_SRC_FILES := gaitfuncs.c
LOCAL_STATIC_LIBRARIES := htk

include $(BUILD_SHARED_LIBRARY)

调用子目录，makefile文件功能不完全是优雅的前调用的CLEAR_VARS功能;）

Calling the CLEAR_VARS function before calling the subdir-makefiles function wasn't exactly elegant ;)

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