1. Using 5.10.x kernel header
2. Add tirpc support
3. Remove bin/* (non toolchain related instruction)
4. Chmod 755 target/
5. Put libmpc.so, libncurses.so and libmpfr.so to /usr/local/lib to support ubuntu 12.04 version.
6. Update to glibc 2.35.x and gcc 10.4.0
7. Support aarch64
8. To support glibc with debug symbol
9. add libssp.so
10. Remove sysroot/lib/*.la and lib/*.la files 
11. add fortran config
12. add OPENMP config
13. Update to binutil 2.38
14. Set rpath of bin/* to runpath: /opt/arm/aarch64-ca53-linux-gnueabihf-10.4.0/lib
