Date: Tue, 20 May 2008 13:33:15 +1000 From: Mark Andrews <Mark_Andrews@isc.org> Cc: freebsd-stable@freebsd.org, Dave Uhring <duhring@charter.net> Subject: Re: Buildworld Fails RELENG_7 Message-ID: <200805200333.m4K3XF72030784@drugs.dv.isc.org> In-Reply-To: Your message of "Tue, 20 May 2008 13:24:58 %2B1000." <200805200324.m4K3Ow5J030607@drugs.dv.isc.org>
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>
> > On Tue, May 20, 2008 at 11:58:03AM +1000, Mark Andrews wrote:
> > >
> > > > # export CFLAGS=""
> > >
> > > This does NOT remove CFLAGS from the environment.
> >
> > It does when you shell is bash.
>
> bash is broken. Empty environment variables have meaning.
>
> Mark
And when tested does behave the way you describe.
Mark
drugs:9.5.x 13:30 {4371} % bash
[marka@drugs ~/cvs/9.5.x]$ printenv | grep FOO
[marka@drugs ~/cvs/9.5.x]$ FOO=ll
[marka@drugs ~/cvs/9.5.x]$ export FOO
[marka@drugs ~/cvs/9.5.x]$ printenv | grep FOO
FOO=ll
[marka@drugs ~/cvs/9.5.x]$ FOO=""
[marka@drugs ~/cvs/9.5.x]$ export FOO
[marka@drugs ~/cvs/9.5.x]$ printenv | grep FOO
FOO=
[marka@drugs ~/cvs/9.5.x]$ env -i PATH=$PATH printenv | grep FOO
[marka@drugs ~/cvs/9.5.x]$
> --
> Mark Andrews, ISC
> 1 Seymour St., Dundas Valley, NSW 2117, Australia
> PHONE: +61 2 9871 4742 INTERNET: Mark_Andrews@isc.org
> _______________________________________________
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--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: Mark_Andrews@isc.org
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