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Re: Proper m4 quoting

From: Eric Blake
Subject: Re: Proper m4 quoting
Date: Thu, 14 Apr 2011 13:24:19 -0600
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On 04/14/2011 01:04 PM, Too, Justin A. wrote:
>> test_executable="$$(top_builddir)/scripts/test/bin/my_test"
>> and, at shell time, $$ is the process id, explaining your results.
> I think in my rush, I was confusing Automake/m4 issues, hence the '$$',
> since I was trying to keep the '$'.

Yep - inside makefiles, for shell code where you want a $ to be visible
to the shell instead of make, you have to escape $ as $$.  It's a bit of
a shame that all three tools (m4, shell, make) have subtly different
behaviors on when $ is special.

> Thank you for your help, everything is good to go now.

Glad to hear it.

Eric Blake   address@hidden    +1-801-349-2682
Libvirt virtualization library

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