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Re: [PATCH 4/4] Use AM_MISSING_PROG when making bison the default YACC h


From: Bruno Haible
Subject: Re: [PATCH 4/4] Use AM_MISSING_PROG when making bison the default YACC here
Date: Wed, 28 Apr 2010 01:23:18 +0200
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Andreas Gruenbacher wrote:
> > This variable will not be used if a user unpacks and compiles a virgin
> > tarball.
> 
> ... unless the timestamps get destroyed, or make gets things wrong.  The 
> latter apparently happened to Daniel (CCed) on Tru64 with the native make; 
> the 
> result was a build failure.  (GNU make got that situation right.)

OK, so that was the original problem. I agree it's a nasty one.

One approach is described in the autoconf documentation
  
<http://www.gnu.org/software/autoconf/manual/html_node/Timestamps-and-Make.html>
This approach looks reasonable. You are welcome to submit patch for gnulib
to use this approach.

Another approach is to document that your package requires GNU make for
building. Nowadays, GNU make is preinstalled on many platforms and quickly
built on the other platforms.

Bruno




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