Z:gnu-www-ja-gpl-2.0-faq--d50fa2-However, if you link non-free/en

However, if you link non-free libraries with the source code, that would be an issue you need to deal with. It does not preclude releasing the source code under the GPL, but if the libraries don't fit under the &ldquo;system library&rdquo; exception, you should affix an explicit notice giving permission to link your program with them. The FSF can give you advice on doing this.