From owner-freebsd-current@FreeBSD.ORG  Tue Feb 15 21:10:29 2011
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Date: Tue, 15 Feb 2011 21:10:29 +0000
From: Alexander Best <arundel@freebsd.org>
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Subject: $PATH and buildworld not getting along
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hi there,

i've run into an issue where $PATH doesn't get discarded during buildworld. is
this behavior to be expected? to reproduce do:

1) be sure /usr/local/bin comes *before* /usr/bin in your $PATH
2) ln -s /bin/cat /usr/local/bin/cc (some sh script would be better)
3) cd /usr/src ; make SRCCONF=/dev/null __MAKE_CONF=/dev/null buildworld
4) see how buildworld fails, because cat(1) gets invoked instead of cc(1).

... buildkernel on the other hand seems to be immune to such an issue.

cheers.
alex

-- 
a13x