> these symbols should be defined in libgcc_s.so.1
> which is linked to c++ code by gcc.
> sounds like a gcc toolchain issue, if you cannot
> figure it out then post
> echo 'int main(){}' |g++ -xc++ -
> readelf -ld ./a.out
> strace /lib/ld-musl-*.so.1 ./a.out
> readelf -d /lib/libstdc++.so.6
> readelf -aW /lib/libstdc++.so.6 |grep Unwind
> readelf -aW /lib/libgcc_s.so.1 |grep Unwin