Android Jni调用so库加载库失败分析

现有一个项目，通过JNI接口调用底层库，例如：lib***.so如下所示，总是加载不成功。调试发现，每次加载so库，会跳到catch异常处理部分，然后打印异常log信息。

static{
try{
System.load（"/data/data/com.***/lib/lib***.so"）;
}
catch（UnsatisfiedLinkError ulink）{
Log.i（"HVnative====","Can not load library"）;
ulink.printStackTrace（）;
}
}

用arm-none-linux-gnueabi-ld工具发现有些函数未定义，如下所示：

snowdream@snowdream:~/workspace/$ arm-none-linux-gnueabi-ld lib***.so
arm-none-linux-gnueabi-ld: warning: libc.so, needed by lib***.so, not found （try using -rpath or -rpath-link）
arm-none-linux-gnueabi-ld: warning: libdvm.so, needed by lib***.so, not found （try using -rpath or -rpath-link）
lib***.so: warning: the use of `tmpnam" is dangerous, better use `mkstemp"
arm-none-linux-gnueabi-ld: warning: cannot find entry symbol _start; defaulting to 00008248
lib***.so: undefined reference to `__aeabi_fadd"
lib***.so: undefined reference to `__aeabi_fdiv"
lib***.so: undefined reference to `__aeabi_fcmpge"
lib***.so: undefined reference to `__aeabi_dcmpgt"
lib***.so: undefined reference to `__aeabi_dcmpeq"
lib***.so: undefined reference to `__aeabi_uidiv"
lib***.so: undefined reference to `__aeabi_ui2d"
lib***.so: undefined reference to `__aeabi_dcmple"
lib***.so: undefined reference to `__aeabi_fcmplt"
lib***.so: undefined reference to `__aeabi_i2d"
lib***.so: undefined reference to `__aeabi_uidivmod"
lib***.so: undefined reference to `__aeabi_fmul"
lib***.so: undefined reference to `__aeabi_d2uiz"
lib***.so: undefined reference to `__aeabi_fcmpeq"
lib***.so: undefined reference to `__aeabi_d2iz"
lib***.so: undefined reference to `__aeabi_dcmpge"
lib***.so: undefined reference to `__aeabi_ldivmod"
lib***.so: undefined reference to `__aeabi_d2f"
lib***.so: undefined reference to `__aeabi_dmul"
lib***.so: undefined reference to `__aeabi_dcmplt"
lib***.so: undefined reference to `__aeabi_f2d"
lib***.so: undefined reference to `__aeabi_fcmple"
lib***.so: undefined reference to `__aeabi_idivmod"
lib***.so: undefined reference to `__aeabi_fsub"
lib***.so: undefined reference to `__aeabi_ddiv"
lib***.so: undefined reference to `__aeabi_ui2f"
lib***.so: undefined reference to `__aeabi_i2f"
lib***.so: undefined reference to `__aeabi_idiv"
lib***.so: undefined reference to `__aeabi_dadd"
lib***.so: undefined reference to `__aeabi_fcmpgt"
lib***.so: undefined reference to `__aeabi_dsub"
lib***.so: undefined reference to `__aeabi_f2iz"

如果“undefined reference to” 后面打印的函数是：
1、你自己写的函数，那么你应该去检查自己所写的这段代码有何问题，修改之后，再重新编译底层库； 2、系统函数，暂时还没找到合适的解决办法，正在努力寻求方法。

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首页 / 操作系统 / Linux / Android Jni调用so库加载库失败分析