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From: Roger Pau Monne <roger.pau@citrix.com>
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>
Subject: Re: [PATCH 2/9] tools/build: fix pygrub linking
Date: Tue, 17 Jul 2012 17:34:41 +0100	[thread overview]
Message-ID: <50059421.406@citrix.com> (raw)
In-Reply-To: <20485.37211.873318.627523@mariner.uk.xensource.com>

Ian Jackson wrote:
> Roger Pau Monne writes ("Re: [PATCH 2/9] tools/build: fix pygrub linking"):
>> diff --git a/tools/pygrub/Makefile b/tools/pygrub/Makefile
>> index bd22dd4..182afdd 100644
>> --- a/tools/pygrub/Makefile
>> +++ b/tools/pygrub/Makefile
>> @@ -14,7 +14,9 @@ install: all
>>  		$(PYTHON_PREFIX_ARG) --root="$(DESTDIR)" \
>>  		--install-scripts=$(PRIVATE_BINDIR) --force
>>  	$(INSTALL_DIR) $(DESTDIR)/var/run/xend/boot
>> +ifneq ($(shell readlink -f $(DESTDIR)/$(BINDIR)), $(shell readlink -f
>> $(PRIVATE_BINDIR)))
>>  	ln -sf $(PRIVATE_BINDIR)/pygrub $(DESTDIR)/$(BINDIR)
>> +endif
> 
> Why are we doing all this work in make with $(shell...) rather than
> simply in the command stanza ?
> 
> Also I'm a bit confused.  This problem occurs only when DESTDIR="" ?

No, this occurs when $(BINDIR) == $(PRIVATE_BINDIR), but we cannot use
the "test -e", because we might have previous versions of pygrub
installed which should also be overwritten by the link, or the user will
keep using the old version.

> In which case perhaps the right answer is something like
>         set -e; if ! test -e $(DESTDIR)/$(BINDIR)/pygrub; then \
>             ln -sf $(PRIVATE_BINDIR)/pygrub $(DESTDIR)/$(BINDIR); \
>         fi
> 
> Ian.

  reply	other threads:[~2012-07-17 16:34 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-07-11 10:23 [PATCH 0/9] NetBSD: minor fixes and hotplug execution Roger Pau Monne
2012-07-11 10:23 ` [PATCH 1/9] xenstore: don't print an error when gntdev cannot be opened Roger Pau Monne
2012-07-23 11:42   ` Ian Campbell
2012-07-11 10:23 ` [PATCH 2/9] tools/build: fix pygrub linking Roger Pau Monne
2012-07-11 11:00   ` Christoph Egger
2012-07-12 16:30     ` Roger Pau Monne
2012-07-17 16:22       ` Ian Jackson
2012-07-17 16:34         ` Roger Pau Monne [this message]
2012-07-17 18:17           ` Ian Jackson
2012-07-18  8:26             ` Roger Pau Monne
2012-07-18 10:48               ` Ian Jackson
2012-07-18 13:55                 ` Roger Pau Monne
2012-07-19 14:48                   ` Ian Jackson
2012-07-19 15:00                     ` Roger Pau Monne
2012-07-19 15:03                       ` Ian Jackson
2012-07-11 10:23 ` [PATCH 3/9] pygrub: don't leave fds open Roger Pau Monne
2012-07-11 11:02   ` Christoph Egger
2012-07-17 16:01   ` Ian Jackson
2012-07-11 10:23 ` [PATCH 4/9] build: include Tools.mk first in tools/Rules.mk Roger Pau Monne
2012-07-11 11:52   ` Christoph Egger
2012-07-23 11:34   ` Ian Campbell
2012-07-23 12:19     ` Christoph Egger
2012-07-25  9:32     ` Roger Pau Monne
2012-07-25 10:39       ` Ian Campbell
2012-07-25 10:56         ` Roger Pau Monne
2012-07-25 16:43           ` Ian Campbell
2012-07-11 10:23 ` [PATCH 5/9] libxl: react correctly to POLLHUP Roger Pau Monne
2012-07-17 16:01   ` Ian Jackson
2012-07-11 10:23 ` [PATCH 6/9] libxl: check backend state before setting it to "closing" Roger Pau Monne
2012-07-17 16:05   ` Ian Jackson
2012-07-11 10:23 ` [PATCH 7/9] hotplug/NetBSD: check type of file to attach from params Roger Pau Monne
2012-07-11 11:54   ` Christoph Egger
2012-07-17 16:06   ` Ian Jackson
2012-07-17 16:35     ` Roger Pau Monne
2012-07-11 10:23 ` [PATCH 8/9] libxl: call hotplug scripts from xl for NetBSD Roger Pau Monne
2012-07-17 16:07   ` Ian Jackson
2012-07-11 10:23 ` [PATCH 9/9] init/NetBSD: move xenbackendd to xend init script Roger Pau Monne
2012-07-11 12:02   ` Christoph Egger
2012-07-17 16:08   ` Ian Jackson
2012-07-17 16:23     ` Roger Pau Monne
2012-07-18  9:04       ` Christoph Egger
2012-07-18  9:43         ` Roger Pau Monne
2012-07-18  9:46           ` Christoph Egger
2012-07-18  9:46           ` Roger Pau Monne
2012-07-18 10:50         ` Ian Jackson
2012-07-18 11:02           ` Roger Pau Monne
2012-07-18  9:02     ` Christoph Egger
2012-07-23 12:20 ` [PATCH 0/9] NetBSD: minor fixes and hotplug execution Ian Campbell

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