Re: BUG #15306: Use pkg-config for searching libxml2 header

=?utf-8?q?PG_Bug_reporting_form?= <noreply@postgresql.org> writes:
> This is an improvement suggestion. In the configure script,
> https://github.com/postgres/postgres/blob/master/configure.in#L896
> this part uses `xml2-config` program to find the `libxml2` headers.

Right ...

> It would be more appropriate to use pkg-config program to search `libxml2`
> headers.

Why?  Under what circumstances would xml2-config not be present
(assuming that libxml2 is) or give a less desirable answer than
pkg-config?  What would you have us do on platforms lacking pkg-config?

            regards, tom lane