Question

我是Android NDK的新手。

有3个文件，“first.c，first.h，second.c” 我想编译成2个共享库（libfirst.so，libsecond.so，第二个使用第一个库）

bellow是 Android.mk

LOCAL_PATH:= $(call my-dir)


# first lib
include $(CLEAR_VARS)

LOCAL_MODULE    := libtwolib-first
LOCAL_SRC_FILES := first.c

include $(BUILD_SHARED_LIBRARY)

# second lib
#
include $(CLEAR_VARS)

LOCAL_MODULE    := libtwolib-second
LOCAL_SRC_FILES := second.c

LOCAL_SHARED_LIBRARIES := libtwolib-first

include $(BUILD_SHARED_LIBRARY)

first.h

extern int first(int  x, int  y);

second.c

jint
Java_com_example_twolibs_TwoLibs_add( JNIEnv*  env,
                                      jobject  this,
                                      jint     x,
                                      jint     y )
{
    return first(x, y);
}

但是什么时候运行这个程序，应用程序被迫关闭。如果首先编译为静态库。那没关系。就像相关的Android.mk一样：

LOCAL_PATH:= $(call my-dir)

# first lib, which will be built statically
#
include $(CLEAR_VARS)

LOCAL_MODULE    := libtwolib-first
LOCAL_SRC_FILES := first.c

include $(BUILD_STATIC_LIBRARY)

# second lib, which will depend on and include the first one
#
include $(CLEAR_VARS)

LOCAL_MODULE    := libtwolib-second
LOCAL_SRC_FILES := second.c

LOCAL_STATIC_LIBRARIES := libtwolib-first

include $(BUILD_SHARED_LIBRARY)

任何人都可以帮助我吗？非常感谢...

Answer 1

我自己也很陌生，但据我所知，你只能拥有一个共享库。要使用多个库，请静态链接它们，然后从静态库中构建一个共享库。

关于Adroid.mk的一个问题

1 个答案: