Android NDK/JNI .So 库出现 UnsatisfiedLinkError

Question

我是 Android NDK 的新手，我目前正在尝试为 Android（以及后来的 iOS）构建一个 RTMP C 客户端。目前，我运行遇到了应用程序在我尝试加载我的库时立即崩溃的问题：

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 没有 return 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

我试过通过 System.loadLibrary("rtmp") 加载 rtmp 库，但没有成功。

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 使用了 rtmp 中的一些结构和函数，如下所示：

#include <rtmp/rtmp.h>

我不确定 librtmp.so.1 是从哪里来的，但我也在我的 libtest.so 中用 arm-linux-andrioideabi-readelf:

找到了它

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

关于如何解决这个问题的任何想法？

编辑：我从 here. I was sent there from the KODI librtmp update page

得到了 rtmp.so 文件

Answer 1

我最终扔掉了 rtmp.so 文件，转而从 rtmpdump-android 抓取了 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)

并更改我的 RTMPClient.c 文件以包含 #include "librtmp/rtmp.h" 而不是 #include <rtmp/rtmp.h>，文件已编译并且运行在我的设备上没有任何问题。

Android NDK/JNI .So 库出现 UnsatisfiedLinkError

Android NDK/JNI UnsatisfiedLinkError With .So library

c

android

rtmp

android-ndk