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Re: [Xen-devel] [PATCH] linux-2.6.18-xen.hg: check that awk supports 'ge

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Subject: Re: [Xen-devel] [PATCH] linux-2.6.18-xen.hg: check that awk supports 'gensub' command
From: Michael Abd-El-Malek <mabdelmalek@xxxxxxx>
Date: 2007年10月10日 10:50:11 -0400
Delivery-date: 2007年10月10日 07:50:54 -0700
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On Oct 10, 2007, at 4:47 AM, Keir Fraser wrote:
On 10/10/07 08:54, "Jan Beulich" <jbeulich@xxxxxxxxxx> wrote:
Michael Abd-El-Malek <mabdelmalek@xxxxxxx> 10.10.07 04:53 >>>
The linux-2.6.18-xen.hg/scripts/Makefile.xen.awk script depends on the
GNU AWK-specific function "gensub". If another awk is used (e.g.,
Debian installs mawk by default), the lack of gensub trickles down to cause the -xen.c files to not be compiled. This was time- consuming to
track. So we should check that the awk program supports 'gensub'.
Signed-off-by: Michael Abd-El-Malek <mabdelmalek@xxxxxxx>
Hmm, this seems odd: If I try to use an arbitrary function (with gawk) , I get
a
failure, which should prevent make from continuing the build. Are you saying
this isn't happening for you? Have you determined why?
The implication seems to be that other awk implementations (most likely mawk
in this case) silently continue.
 -- Keir
Yes, the build process would continue with mawk silently failing. The resulting build problems have been encountered by others before; see:
http://lists.xensource.com/archives/html/xen-devel/2007-07/msg00840.html
Mike
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