无法加载库:reloc_library [1285]:找不到'rand'

Question

我正在尝试将PJSIP库用于我的Android应用程序.我根据本手册构建了pjsua示例应用程序:https://trac.pjsip.org/repos/wiki/Getting-Started/Android

但是,当示例应用程序启动时,异常触发器:

12-06 15:03:58.043: D/dalvikvm(628): Trying to load lib /data/data/org.pjsip.pjsua2.app/lib/libpjsua2.so 0x4129d980
12-06 15:03:58.064: W/dalvikvm(628): Exception Ljava/lang/UnsatisfiedLinkError; thrown while initializing Lorg/pjsip/pjsua2/app/MyApp;
12-06 15:03:58.064: D/AndroidRuntime(628): Shutting down VM
12-06 15:03:58.064: W/dalvikvm(628): threadid=1: thread exiting with uncaught exception (group=0x409c01f8)
12-06 15:03:58.083: E/AndroidRuntime(628): FATAL EXCEPTION: main
12-06 15:03:58.083: E/AndroidRuntime(628): java.lang.ExceptionInInitializerError
12-06 15:03:58.083: E/AndroidRuntime(628):  at org.pjsip.pjsua2.app.MainActivity.onCreate(MainActivity.java:85)
12-06 15:03:58.083: E/AndroidRuntime(628):  at android.app.Activity.performCreate(Activity.java:4465)
12-06 15:03:58.083: E/AndroidRuntime(628):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
12-06 15:03:58.083: E/AndroidRuntime(628):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
12-06 15:03:58.083: E/AndroidRuntime(628):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
12-06 15:03:58.083: E/AndroidRuntime(628):  at android.app.ActivityThread.access$600(ActivityThread.java:123)
12-06 15:03:58.083: E/AndroidRuntime(628):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
12-06 15:03:58.083: E/AndroidRuntime(628):  at android.os.Handler.dispatchMessage(Handler.java:99)
12-06 15:03:58.083: E/AndroidRuntime(628):  at android.os.Looper.loop(Looper.java:137)
12-06 15:03:58.083: E/AndroidRuntime(628):  at android.app.ActivityThread.main(ActivityThread.java:4424)
12-06 15:03:58.083: E/AndroidRuntime(628):  at java.lang.reflect.Method.invokeNative(Native Method)
12-06 15:03:58.083: E/AndroidRuntime(628):  at java.lang.reflect.Method.invoke(Method.java:511)
12-06 15:03:58.083: E/AndroidRuntime(628):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
12-06 15:03:58.083: E/AndroidRuntime(628):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
12-06 15:03:58.083: E/AndroidRuntime(628):  at dalvik.system.NativeStart.main(Native Method)
12-06 15:03:58.083: E/AndroidRuntime(628): Caused by: java.lang.UnsatisfiedLinkError: Cannot load library: reloc_library[1285]:    37 cannot locate 'rand'...
12-06 15:03:58.083: E/AndroidRuntime(628):  at java.lang.Runtime.loadLibrary(Runtime.java:370)
12-06 15:03:58.083: E/AndroidRuntime(628):  at java.lang.System.loadLibrary(System.java:535)
12-06 15:03:58.083: E/AndroidRuntime(628):  at org.pjsip.pjsua2.app.MyApp.<clinit>(MyApp.java:235)

似乎appl无法加载libpjsua2.so库.我之前从未使用过NDK,所以我对这个问题没有任何想法,请帮帮我...

Answer 1

如果您使用android-21目标构建本机组件,但尝试在具有较旧Android版本的设备上运行它,则会发生这种情况.除非您特别小心,否则无法android-21在旧设备上运行使用目标构建的二进制文件.对于基本的C函数,它android-3与android-20你使用的目标版本无关,它应该适用于所有目标版本,但是如果你使用android-21它只适用于那个版本和更新版本.

有关此问题的详细信息,请参阅/sf/answers/1896521441/.

Answer 2

mstorsjo回答了我的问题.但我想写一条评论:我有正确的属性文件,但在pjsip建设期间我发现了以下日志:

sip@ubuntu:~/pjsip/trunk$ ./configure-android
configure-android: APP_PLATFORM not specified, using android-21
configure-android: TARGET_ABI not specified, using armeabi

因此,如果要在某个特定平台版本上编译项目,则必须为configure-android脚本设置APP_PLATFORM参数.

TARGET_ABI=armeabi-v7a APP_PLATFORM=android-8 ./configure-android --use-ndk-cflags