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

From: Böszörményi Zoltán <zboszor(at)pr(dot)hu>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, dingxiangfei2009(at)gmail(dot)com
Cc: pgsql-bugs(at)lists(dot)postgresql(dot)org
Subject: Re: BUG #15306: Use pkg-config for searching libxml2 header
Date: 2018-08-01 09:56:07
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2018-07-31 20:33 keltezéssel, Tom Lane írta:
> =?utf-8?q?PG_Bug_reporting_form?= <noreply(at)postgresql(dot)org> writes:
>> This is an improvement suggestion. In the configure script,
>> 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?

The Yocto cross-compiler framework (since Yocto 2.2 IIRC) does not
allow the "binconfig" scripts for XML2 and GD and for some other

The pkg-config scripts are not just preferred but mandatory.

> What would you have us do on platforms lacking pkg-config?

That should be kept as a fallback in PKG_CHECK_MODULES().

Best regards,
Zoltán Böszörményi

> regards, tom lane

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