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Date: Fri, 23 Mar 2007 13:29:51 +0000
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Subject: Re: Updating GCC
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On Thu, 22 Mar 2007 14:18:03 -0700 (PDT)
youshi10@u.washington.edu wrote:

> On Thu, 22 Mar 2007, White Hat wrote:
>=20
> > --- Chuck Swiger <cswiger@mac.com> wrote:
> >
> >> On Mar 22, 2007, at 12:34 PM, White Hat wrote:
> >>>> Add:
> >>>>
> >>>> CC?=3D	/usr/local/bin/gcc
> >>>> CXX?=3D	/usr/local/bin/g++
> >>>>
> >>>> ...to /etc/make.conf.  You might also find
> >> looking
> >>>> at /usr/ports/Mk/
> >>>> bsd.gcc.mk to be informative...
> >>>
> >>> Thanks! One other question; why the '?' mark? I
> > was
> >>> Googling for information on gcc, and it listed
> >> 'cxx=3D'
> >>> sans a question mark in it.
> >>
> >> It means "set CC to this value if it's not already
> >> set to something".
> >>
> >> Some ports already know they need a newer version of
> >> gcc (using
> >> "USE_GCC=3D"), and the "make world" infrastructure to
> >> rebuild the
> >> kernel/userland need to use the system-provided
> >> compiler, so using
> >> the question mark lets things which know better use
> >> the exact
> >> compiler they want.
> >
> > Thanks! I could not find that information anywhere,
> > although I am sure it does exist.
>=20
> Does the make.conf manpage need to be updated? It doesn't appear to
> reference either USE_GCC=3D or CC=3D or CXX=3D at all.. -Garrett
>=20
=46rom the porters' Handbook=20

"Note: It is always incorrect to set any USE_* in /etc/make.conf."