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From: Warner Losh <imp@bsdimp.com>
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Date: Thu, 21 Jul 2011 11:22:08 -0600
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To: Dimitry Andric <dim@FreeBSD.ORG>
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Cc: Alexander Best <arundel@FreeBSD.ORG>, freebsd-current@FreeBSD.ORG
Subject: Re: buildworld failing in lib/libc/db/btree
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On Jul 21, 2011, at 8:03 AM, Dimitry Andric wrote:

> On 2011-07-21 15:45, Alexander Best wrote:
> ...
>>> If you are including any path, e.g. CC=3D/usr/bin/clang, buildworld =
will
>>> not work.  Remove the path and try again.
>>=20
>> THANKS!
>>=20
>> ...exactly that was the problem. :) after changing CC/CXX so it =
doesn't contain
>> a full path, buildworld succeeded!
>=20
> The problem here was that buildworld builds a bootstrap compiler under
> /usr/obj, but if you specify ${CC} with an absolute path, it fails to
> use it!  (The bootstrap compiler has its search paths adjusted, so it
> only looks under /usr/obj for include files, libraries and so on.)
>=20
> This is actually a problem that needs solving, but it won't happen for
> 9.0, unfortunately...

Yes.  And we can't solve it by banning all CC settings with / in them, =
since it is perfectly legitimate to build the whole tree with a =
different compiler that lives outside the tree...

Warner