Android Jni调用so库 加载库失败分析
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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