Perl 5.17.8, PERL_XXX_COPY_ON_WRITE and makedef.pl

Hi all,
The makedef.pl has:

> unless ($define{'PERL_OLD_COPY_ON_WRITE'}
>      || $define{'PERL_NEW_COPY_ON_WRITE'}) {
>     ++$skip{Perl_sv_setsv_cow};
> }

A look in perl.h shows PERL_NEW_COPY_ON_WRITE as the default, but can 
see no way to pass that to makedef.pl so it will obligingly add the sym 
Perl_sv_setsv_cow to the exports list.

It could be added to either the compiler flags or config.h but a guess 
is not very useful.

Thx,
Norm

• Perl 5.17.8, PERL_XXX_COPY_ON_WRITE and makedef.pl by NormW