From mboxrd@z Thu Jan  1 00:00:00 1970
From: taylanbayirli@gmail.com (Taylan Ulrich =?utf-8?Q?Bay=C4=B1rl=C4=B1?=
	=?utf-8?Q?=2FKammer?=)
Subject: Re: pkg-config "Requires" fields and propagated inputs
Date: Sun, 03 May 2015 22:57:40 +0200
Message-ID: <87383dl6pn.fsf@taylan.uni.cx>
References: <87d2444stf.fsf@taylan.uni.cx> <87iodnh0we.fsf@taylan.uni.cx>
	<87pp7pcqjg.fsf@gnu.org> <87fv7ieljt.fsf@taylan.uni.cx>
	<87mw1l1lyg.fsf@gnu.org>
Mime-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable
Return-path: <guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org>
Received: from eggs.gnu.org ([2001:4830:134:3::10]:42062)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <taylanbayirli@gmail.com>) id 1Yp0xN-00089F-Ay
	for guix-devel@gnu.org; Sun, 03 May 2015 16:57:46 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <taylanbayirli@gmail.com>) id 1Yp0xM-0008Hc-7b
	for guix-devel@gnu.org; Sun, 03 May 2015 16:57:45 -0400
In-Reply-To: <87mw1l1lyg.fsf@gnu.org> ("Ludovic
	\=\?utf-8\?Q\?Court\=C3\=A8s\=22'\?\=
	\=\?utf-8\?Q\?s\?\= message of "Sun, 03 May 2015 21:48:39 +0200")
List-Id: "Development of GNU Guix and the GNU System distribution."
	<guix-devel.gnu.org>
List-Unsubscribe: <https://lists.gnu.org/mailman/options/guix-devel>,
	<mailto:guix-devel-request@gnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/archive/html/guix-devel>
List-Post: <mailto:guix-devel@gnu.org>
List-Help: <mailto:guix-devel-request@gnu.org?subject=help>
List-Subscribe: <https://lists.gnu.org/mailman/listinfo/guix-devel>,
	<mailto:guix-devel-request@gnu.org?subject=subscribe>
Errors-To: guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org
Sender: guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org
To: Ludovic =?utf-8?Q?Court=C3=A8s?= <ludo@gnu.org>
Cc: guix-devel@gnu.org

ludo@gnu.org (Ludovic Court=C3=A8s) writes:

>> portaudio: pkg-config: () libs: ("asound")
>> avahi: pkg-config: ("glib-2.0" "gobject-2.0" "glib-2.0") libs: ()
>> libatomic-ops: pkg-config: () libs: ("atomic_ops")
>
> So =E2=80=98libs=E2=80=99 means that the .pc has =E2=80=9C-latomic_ops=E2=
=80=9D, right?

Indeed.

There are libatomic_ops.a and .la files in the $prefix/lib of that
package, but no .so files.  I'm not sure what this means.

>> ijs: pkg-config: () libs: ("ijs")
>> mesa: pkg-config: ("xcb-dri3" "xcb-dri2" "libudev" "xcb-dri3" "xcb-dri2"=
) libs: ()
>> dbus-glib: pkg-config: ("gobject-2.0" "glib-2.0" "dbus-1") libs: ()
>> libcroco: pkg-config: ("libxml-2.0" "glib-2.0") libs: ()
>> gst-plugins-base: pkg-config: ("gio-2.0" "glib-2.0" "gio-2.0") libs: ()
>> harfbuzz: pkg-config: ("icu-uc") libs: ()
>> gtk+: pkg-config: ("gio-2.0" "cairo" "gio-2.0" "cairo" "gio-2.0" "cairo"=
) libs: ()
>> pango: pkg-config: ("gobject-2.0" "glib-2.0" "gmodule-no-export-2.0" "fo=
ntconfig" "freetype2" "xft") libs: ()
>> cairo: pkg-config: ("xcb-shm" "xcb-render" "xcb-render") libs: ("z" "z")
>
> delete-duplicates?  :-)

Indeed.  Done.

> That looks nice.  So where=E2=80=99s the code?  ;-)

Here's the repo:

https://notabug.org/taylanub/guix

> What are your thoughts on how to integrate it?  Should we make a =E2=80=
=98lint=E2=80=99
> pass, or is there something that can be turned into a build phase?

It should be possible to make a build phase of it, using
'requires-and-libs-for-path' on the output directories, then using
'missing-packages' and 'missing-libraries' to find any pkg-config
packages, and libraries, which wouldn't be satisfied during use of the
package/output given its propagated inputs.

I'll try implementing this.

Taylan