On 9/16/20 1:16 PM, JonY wrote:
> For platforms like Mingw and Cygwin, cygwin refuses to generate the
> shared library without using -no-undefined.
> 
> Attached patch makes sure the right flags are used, since libtool is
> already used to link libstdc++.
> 
> Patch OK?
> 

Ping.