android ndk编译C++ 的undefined reference to '__cxa_end_cleanup'及 __gxx_personality_v0问题

出现这两个错误主要是由于缺少stl支持导致的。

android 的ndk默认是不带 stl相关属性的

这就导致他编译C++代码的时候有时候会链接失败，报一些函数找不到。

比如这两个：

__cxa_end_cleanup 

和   __gxx_personality_v0   

这些stl相关的库不在$(NDK_ROOT)/platforms/android-9/arch-arm/usr/lib里面，而在$(NDK_ROOT)/sources/cxx-stl 下面你用grep 可以看到 

hl@hl-VirtualBox:/opt/android-ndk-r8c/sources/cxx-stl$ grep -rnH "__cxa_end_cleanup"  ./  

Binary file ./gnu-libstdc++/4.4.3/libs/armeabi-v7a/libsupc++.a matches

Binary file ./gnu-libstdc++/4.4.3/libs/armeabi-v7a/libgnustl_shared.so matches

Binary file ./gnu-libstdc++/4.4.3/libs/armeabi-v7a/libgnustl_static.a matches

Binary file ./gnu-libstdc++/4.4.3/libs/armeabi/libsupc++.a matches

Binary file ./gnu-libstdc++/4.4.3/libs/armeabi/libgnustl_shared.so matches

Binary file ./gnu-libstdc++/4.4.3/libs/armeabi/libgnustl_static.a matches

Binary file ./gnu-libstdc++/4.6/libs/armeabi-v7a/libsupc++.a matches

Binary file ./gnu-libstdc++/4.6/libs/armeabi-v7a/libgnustl_shared.so matches

Binary file ./gnu-libstdc++/4.6/libs/armeabi-v7a/libgnustl_static.a matches

Binary file ./gnu-libstdc++/4.6/libs/armeabi/libsupc++.a matches

Binary file ./gnu-libstdc++/4.6/libs/armeabi/libgnustl_shared.so matches

Binary file ./gnu-libstdc++/4.6/libs/armeabi/libgnustl_static.a matches

如果你用ndk自带的nm命令查看这个 libsupc++.a就会发现它里面是有__cxa_end_cleanup 这个函数定义的

hl@hl-VirtualBox:/opt/android-ndk-r8c/sources/cxx-stl$ arm-linux-androideabi-nm ./gnu-libstdc++/4.6/libs/armeabi-v7a/libsupc++.a | grep __cxa_end_cleanup 

         U __cxa_end_cleanup

00000000 T __cxa_end_cleanup

         U __cxa_end_cleanup

         U __cxa_end_cleanup

         U __cxa_end_cleanup

         U __cxa_end_cleanup

         U __cxa_end_cleanup

         U __cxa_end_cleanup

         U __cxa_end_cleanup

         U __cxa_end_cleanup

         U __cxa_end_cleanup

         U __cxa_end_cleanup

         U __cxa_end_cleanup

所以我们在编译C++代码的时候如果遇到这类问题，就在Android.mk里面加上：

STL_PATH=$(NDK_ROOT)/sources/cxx-stl/gnu-libstdc++/4.6/libs/armeabi-v7a

以及

LOCAL_LDLIBS += -L$(STL_PATH) -lsupc++

即可解决这个问题

再次感谢此文作者，说的很详细，对我启发很大

http://blog.youkuaiyun.com/andyhuabing/article/details/8591459