Date: Sun, 15 Feb 2004 15:34:46 -0500 From: Garance A Drosihn <drosih@rpi.edu> To: "M. Warner Losh" <imp@bsdimp.com> Cc: hackers@freebsd.org Subject: Re: Adding 'realclean' target to /usr/src/Makefile Message-ID: <p06020411bc5584b53edd@[128.113.24.47]> In-Reply-To: <20040215.101900.20429400.imp@bsdimp.com> References: <p0602040fbc54cd0d3342@[128.113.24.47]> <20040215.101900.20429400.imp@bsdimp.com>
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At 10:19 AM -0700 2/15/04, M. Warner Losh wrote:
>In message: <p0602040fbc54cd0d3342@[128.113.24.47]>
> Garance A Drosihn <drosih@rpi.edu> writes:
>: realclean :
>: rm -Rf ${.OBJDIR}/*
>
>I'd make that be more like:
>
>realclean :
> @chflags -R 0 ${.OBJDIR}/*
> @rm -Rf ${.OBJDIR}/*
>
>If you can tolerate errors in the output, the following is
>faster because the chflags has lots less work to do:
>
>realclean :
> @rm -Rf ${.OBJDIR}/*
> @chflags -R 0 ${.OBJDIR}/*
> @rm -Rf ${.OBJDIR}/*
The more foolproof/reliable we can make it for everybody, the
more I like it. I'll see your chflags, and add one redirection
of stderr so the user won't see errors that we don't really
care about:
realclean :
@rm -Rf ${.OBJDIR}/* 2>/dev/null
@chflags -R 0 ${.OBJDIR}/*
@rm -Rf ${.OBJDIR}/*
Any errors that showed up on the first 'rm' should also show up
on the second 'rm', so we shouldn't really lose any useful info.
I might also try wrapping the second two commands in an 'if', so
they will be executed only if there's still something left over
after the first 'rm'.
--
Garance Alistair Drosehn = gad@gilead.netel.rpi.edu
Senior Systems Programmer or gad@freebsd.org
Rensselaer Polytechnic Institute or drosih@rpi.edu
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