correct way of using autoreconf and automake

[mokhi]

>  poudriere only installs BUILD_DEPENDS for current package but a regular
> build would also do so for any dependencies. Probably one of those pulls
> devel/pkgconf (aka USES=pkgconfig) which is what provides PKG_CHECK_MODULES.
Aha, yeah you're right!
I mistakenly had pkgconfig:run in my Makefile :-D
changing it to :both fixed my problem.

Thanks a lot for explanation.

Best wishes, Mokhi.