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From: "pmachata at redhat dot com" <>
Subject: [Bug general/5183] broken build with -j>1
Date: Tue, 16 Oct 2007 12:55:00 -0000	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

------- Additional Comments From pmachata at redhat dot com  2007-10-16 12:54 -------
The problem seems to be with two .g.antlered implicit rules being run in
parallel, which step on each other's .antlr-fixes temporary files.  In this
particular case, this is caused by missing rule:
frysk/expr/CExprEvaluator.antlered: frysk/expr/Completer.antlered

Makefile rules are generated from importVocab directives in .g files by way of, so frysk really tries to give make proper parallelization
hints.  So the real problem is with temporary file handling.

I believe what happens is that antlr-warnings.awk produces  e.g.
CExprEvaluator.antlr-fixes, when suddently the other make invocation removes it
via 'rm -f $$d/*.antlr-fixes'.  So the file being just built is removed, and
misses its beginning.  Later on, there's 'for fix in $$d/*.antlr-fixes', which
picks both files, the "healthy" one as well as the truncated one, and tries to
use them as a sed source.  For that reason both parallel make branches fail.


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  reply	other threads:[~2007-10-16 12:55 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-10-15 19:03 [Bug general/5183] New: " swagiaal at redhat dot com
2007-10-16 12:55 ` pmachata at redhat dot com [this message]
2008-06-11 20:09 ` [Bug general/5183] " cagney at redhat dot com

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