newbie question on upgrading GCC

[Erik Trulsson]

On Mon, Apr 10, 2006 at 11:01:21AM -0400, Jim Stapleton wrote:
> how do I setup make.conf to automatically use the new compiler?

Don't.  But if you insist on doing that you could try putting

CC=/usr/local/bin/gcc40
CXX=/usr/local/bin/g++40

into /etc/make.conf.  Just be aware that it will probably not work very
well.


> 
> Is there any way to set this new compiler as the default (such as
> building the OS), without causing issues?

Not without causing issues, no.

> Or would that be just a
> royal pain in the posterior that is not worth the effort?

That does sound like a fairly accurate description.


When it comes to changing the default compiler a good rule of thumb is
that if you need to ask how to do it, then you should not do it.


> 
> On 4/10/06, Erik Trulsson <ertr1013 at student.uu.se> wrote:
> > On Mon, Apr 10, 2006 at 10:43:51AM -0400, Jim Stapleton wrote:
> > > I did a "make install clean" in the lang/gcc40/ directory to get a
> > > newer version of GCC, and it seems happy, so the next thing I did was
> > > I replaced my /usr/bin/gcc, /usr/bin/g++, etc. binaries with hard
> > > links to the /usr/local/bin/gcc-freebsd-4.0,
> > > /usr/local/bin/g++-freebsd-4.0, etc. binaries.
> >
> > That sounds like a bad idea.
> >
> > >
> > > Now when I try to make things, I get a lot of errors and most compilation fails.
> >
> > Yes, a bad idea indeed.  Do not try to change the base compiler unless you
> > really know what you are doing.
> >
> > >
> > > I backed up the original binaries (gcc -> gcc-original), and things
> > > seem to be fixed, and compiles work. What should I do?
> >
> > You should leave the standard compiler alone.  If you wish to use the
> > newer compiler invoke it as gcc40 (IIRC), but don't try use it to rebuild
> > FreeBSD itself.
> >
> >
> > >
> > > Also, the ports install does not make a "cc-freebsd-4.0" binary, so
> > > I'm leary of replacing it with a hard link to the gcc-freebsd-4.0
> > > biary, although when I run "cc --version", it tells me that it is gcc
> > > 3.4.x, which is the default gcc install.
> >
> >
> >
> > --
> > <Insert your favourite quote here.>
> > Erik Trulsson
> > ertr1013 at student.uu.se
> >
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-- 
<Insert your favourite quote here.>
Erik Trulsson
ertr1013 at student.uu.se