带有.So库的Android NDK / JNI UnsatisfiedLinkError

Question

我是Android NDK的新手，目前正在尝试为Android（及更高版本的iOS）构建RTMP C客户端。 当前，我遇到一个问题，即当我尝试加载我的库时，应用程序崩溃：

static {
    System.loadLibrary("test");
}

我得到的例外是

java.lang.UnsatisfiedLinkError: dlopen failed: could not load library "librtmp.so.1" needed by "libtest.so"; caused by library "librtmp.so.1" not found

老实说，我完全迷路了。 ndk-build不返回任何错误：

[armeabi] Prebuilt       : rtmp.so <= jni/rtmp/
[armeabi] Install        : rtmp.so => libs/armeabi/rtmp.so
[armeabi] Compile thumb  : test <= RTMPClient.c
[armeabi] SharedLibrary  : libtest.so
[armeabi] Install        : libtest.so => libs/armeabi/libtest.so

我尝试通过System.loadLibrary("rtmp")加载rtmp库，但没有骰子。

Android.mk

LOCAL_PATH:= $(call my-dir)
LIBS_PATH := libs/$(TARGET_ARCH_ABI)

include $(CLEAR_VARS)
LOCAL_MODULE := rtmp
LOCAL_SRC_FILES := rtmp/rtmp.so
LOCAL_C_INCLUDES := rtmp/
include $(PREBUILT_SHARED_LIBRARY)

include $(CLEAR_VARS)
LOCAL_MODULE    := test
LOCAL_SRC_FILES := RTMPClient.c
LOCAL_LDLIBS    := -llog
LOCAL_SHARED_LIBRARIES += rtmp

include $(BUILD_SHARED_LIBRARY)

Application.mk

APP_PLATFORM:=android-19

我的RTMPClient.c使用rtmp一些结构和功能，如下所示：

#include <rtmp/rtmp.h>

我不确定librtmp.so.1的来源，但是我也可以在libtest.so中使用arm-linux-andrioideabi-readelf找到它：

0x00000001 (NEEDED)                     Shared library: [librtmp.so.1]

关于如何解决此问题的任何想法？

编辑：我从这里得到rtmp.so文件。 我是从KODI librtmp更新页面发送到那里的

Answer 1

我最终丢掉了rtmp.so文件，而是从rtmpdump-android中获取了jni文件。 将这些文件放入后，将我的android.mk文件更改为：

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)
LOCAL_SRC_FILES += \
    librtmp/amf.c \
    librtmp/hashswf.c \
    librtmp/log.c \
    librtmp/parseurl.c \
    librtmp/rtmp.c

LOCAL_CFLAGS := -D__STDC_CONSTANT_MACROS -DNO_CRYPTO
LOCAL_LDLIBS := -llog
LOCAL_MODULE := librtmp

include $(BUILD_STATIC_LIBRARY)

include $(CLEAR_VARS)

LOCAL_MODULE := dump
LOCAL_CFLAGS := -DRTMPDUMP_VERSION=\"v2.4\"
LOCAL_LDLIBS := -llog
LOCAL_SRC_FILES := dump/rtmpdump.c
LOCAL_C_INCLUDES := $(LOCAL_PATH)/../librtmp
LOCAL_C_INCLUDES += dump/rtmpdump.h

LOCAL_STATIC_LIBRARIES := librtmp

include $(BUILD_SHARED_LIBRARY)

include $(CLEAR_VARS)
LOCAL_MODULE    := test
LOCAL_SRC_FILES := nelly.c nelly_tables.c RTMPClient.c
LOCAL_LDLIBS    := -llog
LOCAL_SHARED_LIBRARIES += dump

include $(BUILD_SHARED_LIBRARY)

并将我的RTMPClient.c文件更改为包括#include "librtmp/rtmp.h"而不是#include <rtmp/rtmp.h> ，该文件已编译并在我的设备上运行，没有任何问题。