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Re: y.tab.c inclusion within the source tree

From: Christian Weisgerber
Subject: Re: y.tab.c inclusion within the source tree
Date: Sun, 28 Sep 2014 13:42:36 +0200
User-agent: Mutt/1.5.23 (2014-03-12)

Mark Goldfinch:

> Can someone clarify to me why y.tab.c is included within the bash source
> tree if it is generated from parse.y?
> If one looks in the FreeBSD ports tree, they're deliberately taking the
> initiative to touch parse.y to ensure that y.tab.c is always rebuilt.

They also have a dependency on the bison port, because parse.y does
not build correctly with FreeBSD's yacc(1).  You end up with a bash
that has broken $(...) parsing.  Same issue on OpenBSD, where the
port doesn't touch parse.y because there is no need to.

> If y.tab.c's timestamp ends up being newer than parse.y,

Why would this happen?

> a patch which (correctly) only patches parse.y,

... will cause parse.y to have a newer timestamp.

Christian "naddy" Weisgerber                          address@hidden

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