"Go" C-link library compiles gcc compiler reference to sqrt undefined

at compile time also to add-lm after the instruction: gcc-o ABC Abc.c-lm

Cause: A library is missing and the library is joined with the-l parameter. Linux library naming is consistent, generally for libxxx.so, or LIBXXX.A, libxxx.la, to link a library with the-lxxx, remove the head lib and "." Behind So, LA, a and so on.

The common library link method is: Mathematics library-LM; POSIX thread-lpthread from: http://blog.csdn.net/ngcl_blog/article/details/17097531

"Go" C-link library compiles gcc compiler reference to sqrt undefined