How to depends on perl conditionally?

[Rong-en Fan]

On 2/23/07, Lev Serebryakov <lev at freebsd.org> wrote:
> Hello ports,
>
>   If I use OPTIONS, I can check WITH_<option> only after `.include <bsd.port.pre.mk>'. But USE_PERL5 should be defined BEFORE this include too.
>   What should I do if my port use perl, depending on options?! I can check WITH_PERL only AFTER include and I need to set USE_PERL5 before include :(

If I read bsd.port.mk correctly, you can use USE_PERL5 after pre.mk.
perl related stuffs are defined in post.mk

Regards,
Rong-En Fan