Date: Sat, 18 Aug 2001 20:56:12 -0700 (PDT) From: Mario Doria <mariodoria@yahoo.com> To: Matthew Emmerton <matt@gsicomp.on.ca>, freebsd-ports@FreeBSD.ORG, freebsd-questions@FreeBSD.ORG Subject: Re: [NOT] SOLVED: Problem with '-O -pipe' showing up in CFLAGS / CXXFLAGS Message-ID: <20010819035612.79408.qmail@web14204.mail.yahoo.com> In-Reply-To: <002b01c12861$95de5800$1200a8c0@gsicomp.on.ca>
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--- Matthew Emmerton <matt@gsicomp.on.ca> wrote:
> Aargh!
>
> Further investigation would indicate that the problem is even deeper
> -- it's
> in bsd.port.mk where CFLAGS and CXXFLAGS get seeded with the default
> values
> provided by make. Does anyone know how to turn off make's defaults,
> aside
> from manually setting CFLAGS= in the environment?
>
Edit /etc/make.conf and add a line with CFLAGS=<whatever you need here>
> --
> Matt Emmerton
>
> ----- Original Message -----
> From: "Matthew Emmerton" <matt@gsicomp.on.ca>
> To: <freebsd-ports@FreeBSD.ORG>; <freebsd-questions@FreeBSD.ORG>
> Sent: Saturday, August 18, 2001 11:30 PM
> Subject: SOLVED: Problem with '-O -pipe' showing up in CFLAGS /
> CXXFLAGS
>
>
> > Over the past while I've seen a few people having troubles building
> ports
> > and/or kernels. I always thought it was people setting CFLAGS
> and/or
> > CXXFLAGS in their environment improperly or having /etc/make.conf
> configured
> > with '-O -pipe', as did many others.
> >
> > However, it finally happened to me, and I know I don't do either of
> these.
> > After a couple of hours of investigation, the culprit was found:
> BSD
> make
> > and improperly designed Makefiles. I'm posting my findings here in
> hopes
> > that others will find it useful.
> >
> > Take, for example, the Makefile for biology/xdrawchem, which
> contains the
> > following line:
> >
> > MAKE_ENV= CXX="${CXX}" CXXFLAGS="${CXXFLAGS}"
> QTDIR="${X11BASE}"
> >
> > Looks innocent enough, right? After all, we want MAKE_ENV to have
> those
> > things set right. However, this is WRONG, on two counts.
> >
> > First, bsd.port.mk will pick up CXX and CXXFLAGS (and CC and
> CFLAGS) from
> > the environment so they don't need to be set explicitly here.
> >
> > Second, if CXX and CXXFLAGS are *not* set in the environment, make
> handily
> > supplies its own defaults, which are inappropriate:
> >
> > gabby# make -X -V CXXFLAGS
> > ${CXXINCLUDES} ${CFLAGS}
> > gabby# make -X -V CFLAGS
> > -O -pipe ${_CPUCFLAGS}
> >
> > This is why we end up with '-O -pipe' in CFLAGS/CXXFLAGS, and as
> many
> people
> > have indicated, throws many things for a loop. (In my case, g++
> chews up
> > 100% of available memory and swap while trying to optimize one of
> the
> source
> > modules in xdrawchem.)
> >
> > --
> > Matt Emmerton
> >
> >
> > To Unsubscribe: send mail to majordomo@FreeBSD.org
> > with "unsubscribe freebsd-questions" in the body of the message
> >
>
>
> To Unsubscribe: send mail to majordomo@FreeBSD.org
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Mario Doria
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