From owner-freebsd-hackers  Mon Mar  6 12:38:51 2000
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To: Warner Losh <imp@village.org>
Cc: chet@po.CWRU.Edu, jhix@mindspring.com, Doug@gorean.org,
	hackers@FreeBSD.ORG, iedowse@maths.tcd.ie
Subject: Re: empty lists in for 
In-reply-to: Your message of "Mon, 06 Mar 2000 13:15:45 MST."
             <200003062015.NAA61215@harmony.village.org> 
Date: Mon, 06 Mar 2000 20:38:44 +0000
From: Ian Dowse <iedowse@maths.tcd.ie>
Message-ID:  <200003062038.aa62975@salmon.maths.tcd.ie>
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In message <200003062015.NAA61215@harmony.village.org>, Warner Losh writes:

>: to
>: 
>: 	sh_subdirs=${SUBDIRS}; for f in $$sh_subdirs ; do ...
>

>there's lots of other workarounds, from seeing if SUBDIRS is defined,
>to using make's .foreach.

Another option is:
	
	for f in $$empty_list ${SUBDIRS}; do ...

where 'empty_list' is any undefined sh variable.

Ian


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