From mboxrd@z Thu Jan  1 00:00:00 1970
From: Roger Pau Monne <roger.pau@citrix.com>
Subject: Re: [PATCH 2/9] tools/build: fix pygrub linking
Date: Thu, 19 Jul 2012 16:00:21 +0100
Message-ID: <50082105.1020801@citrix.com>
References: <1342002232-75531-1-git-send-email-roger.pau@citrix.com>
	<1342002232-75531-3-git-send-email-roger.pau@citrix.com>
	<4FFD5CDB.8090409@amd.com>	<4FFEFB8B.3040000@citrix.com>
	<20485.37211.873318.627523@mariner.uk.xensource.com>
	<50059421.406@citrix.com>
	<20485.44103.120825.660007@mariner.uk.xensource.com>
	<5006732B.20804@citrix.com>
	<20486.38043.582649.853670@mariner.uk.xensource.com>
	<5006C057.9050006@citrix.com>
	<20488.7740.264821.563339@mariner.uk.xensource.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Return-path: <xen-devel-bounces@lists.xen.org>
In-Reply-To: <20488.7740.264821.563339@mariner.uk.xensource.com>
List-Unsubscribe: <http://lists.xen.org/cgi-bin/mailman/options/xen-devel>,
	<mailto:xen-devel-request@lists.xen.org?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xen.org>
List-Help: <mailto:xen-devel-request@lists.xen.org?subject=help>
List-Subscribe: <http://lists.xen.org/cgi-bin/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xen.org?subject=subscribe>
Sender: xen-devel-bounces@lists.xen.org
Errors-To: xen-devel-bounces@lists.xen.org
To: Ian Jackson <Ian.Jackson@eu.citrix.com>
Cc: Christoph Egger <Christoph.Egger@amd.com>, "xen-devel@lists.xen.org" <xen-devel@lists.xen.org>
List-Id: xen-devel@lists.xenproject.org

Ian Jackson wrote:
> Roger Pau Monne writes ("Re: [PATCH 2/9] tools/build: fix pygrub linking"):
>> Ian Jackson wrote:
>>> Roger Pau Monne writes ("Re: [PATCH 2/9] tools/build: fix pygrub linking"):
>>>> Ian Jackson wrote:
>>>>> If DESTDIR is not "" then $(PRIVATE_BINDIR)/pygrub is not the same
>>>>> directory as $(DESTDIR)/$(BINDIR).
>>>> Ok, both conditions have to be meet, that DESTDIR == "" and
>>>> PRIVATE_BINDIR == BINDIR (so $(DESTDIR)/$(BINDIR) == $(PRIVATE_BINDIR)).
>>> Right.  OK.  I see now why my test -e is wrong.
>>>
>>> But I still think this should be done with an if in the rule's
>>> command, rather than a makefile conditional.
>> What do you think about:
>>
>> set -e; if [ `readlink -f $(DESTDIR)/$(BINDIR)` != \
>>              `readlink -f $(PRIVATE_BINDIR)` ]; then \
>>                 ln -sf $(PRIVATE_BINDIR)/pygrub $(DESTDIR)/$(BINDIR); \
>> fi
> 
> That looks plausible.
> 
> Can we assume that we are using bash as our shell for these commands ?
> If so we can use `test A -ef B'.

I wouldn't make such an assumption, I've build Xen on systems without
bash (Alpine Linux and NetBSD).