From owner-freebsd-ports@FreeBSD.ORG  Fri Jan 30 05:27:44 2015
Return-Path: <owner-freebsd-ports@FreeBSD.ORG>
Delivered-To: ports@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115])
 (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id 3DAAC539
 for <ports@freebsd.org>; Fri, 30 Jan 2015 05:27:44 +0000 (UTC)
Received: from mail.wilcox-tech.com (mail.foxkit.us [192.99.209.192])
 (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client CN "mail.wilcox-tech.com",
 Issuer "mail.wilcox-tech.com" (not verified))
 by mx1.freebsd.org (Postfix) with ESMTPS id ECE1519A
 for <ports@freebsd.org>; Fri, 30 Jan 2015 05:27:43 +0000 (UTC)
Received: (qmail 3300 invoked from network); 30 Jan 2015 05:28:56 -0000
Received: from ip68-13-243-137.ok.ok.cox.net (HELO ?192.168.1.253?)
 (emyers@wilcox-tech.com@68.13.243.137)
 by mail.foxkit.us with ESMTPA; 30 Jan 2015 05:28:56 -0000
Message-ID: <54CB164D.60908@interlinked.me>
Date: Thu, 29 Jan 2015 23:27:41 -0600
From: Elizabeth Myers <elizabeth@interlinked.me>
User-Agent: Mozilla/5.0 (X11; FreeBSD amd64;
 rv:31.0) Gecko/20100101 Thunderbird/31.4.0
MIME-Version: 1.0
To: ports@freebsd.org
Subject: Re: testing the value of ${CXX} in ports Makefile
References: <201501300345.t0U3jHwb008745@gw.catspoiler.org>
In-Reply-To: <201501300345.t0U3jHwb008745@gw.catspoiler.org>
Content-Type: text/plain; charset=windows-1252
Content-Transfer-Encoding: 7bit
X-BeenThere: freebsd-ports@freebsd.org
X-Mailman-Version: 2.1.18-1
Precedence: list
List-Id: Porting software to FreeBSD <freebsd-ports.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-ports>,
 <mailto:freebsd-ports-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-ports/>
List-Post: <mailto:freebsd-ports@freebsd.org>
List-Help: <mailto:freebsd-ports-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-ports>,
 <mailto:freebsd-ports-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 30 Jan 2015 05:27:44 -0000

On 01/29/15 21:43, Don Lewis wrote:
> I need to test the value of ${CXX} in the Makefile for a port and am
> getting unexpected results.  Here is a simplified version of the
> Makefile:
>
> PORTNAME=	junk
> PORTVERSION=	0.0.0
> CATEGORIES=	devel
> DISTFILES=
>
> MAINTAINER=	truckman@FreeBSD.org
> COMMENT=	junk
>
> USE_GCC=	4.9+
>
> .include <bsd.port.pre.mk>
>
> post-patch:
> 	echo CXX=${CXX}
> .if ${CXX} == g++49
> 	echo detected g++49
> .else
> 	echo did not detect g++49
> .endif
>
> .include <bsd.port.post.mk>
>
>
> If I run "make patch", this is what I get:
>
> # make patch
> ===>   junk-0.0.0 depends on file: /usr/local/sbin/pkg - found
> ===> Fetching all distfiles required by junk-0.0.0 for building
> ===>  Extracting for junk-0.0.0
> ===>  Patching for junk-0.0.0
> echo CXX=g++49
> CXX=g++49
> echo did not detect g++49
> did not detect g++49
>
>
> If I run "make -dA patch" and look at the debug output, I observe
> bsd.gcc.mk getting processed after the .if is evaluated.  When the .if
> is processed, the value of ${CXX} is still c++.  It sort of looks like
> bsd.gcc.mk isn't getting included until bsd.port.post.mk and we are
> relying on lazy expansion to get the correct value of ${CXX} for the
> actions.
>
> It sort of looks like I'll have to do something like:
>
> post-patch:
> 	[ ${CXX} = g++49 ] && echo detected g++49
>
> but that just seems goofy.
>
>
>
> _______________________________________________
> freebsd-ports@freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-ports
> To unsubscribe, send any mail to "freebsd-ports-unsubscribe@freebsd.org"
Why do you need to detect it? Shouldn't USE_GCC ensure it's there? In
any case, browsing through the ports tree, you could try .if
!empty(CXX:M*g++49*)
--
Cheers,

Elizabeth Myers