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Date: Wed, 4 May 2011 10:05:26 +0200
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From: Olivier Smedts <olivier@gid0.org>
To: "O. Hartmann" <ohartman@mail.zedat.fu-berlin.de>
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Cc: freebsd-current@freebsd.org, Dimitry Andric <dim@freebsd.org>
Subject: Re: Building FreeBSD 9.0-CUR/amd64 with CLANG fails
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2011/5/4 O. Hartmann <ohartman@mail.zedat.fu-berlin.de>:
>
> But when I tried to compile essential ports (essential to me), like
> x11-wm/windowmaker, mulitmedia/ffmpeg, for instance, I run into serious
> compiler/assembler error with LLVM/CLANG. I guess the ports- tree isn't
> mature for clang. So am I right in this thinking: leaving /etc/make.conf
> untouched in terms of not putting there the CLANG build construct and
> putting this instead into /etc/src.conf will only affect the OS' source t=
ree
> to be build by clang and all ports are build by the antique system's gcc
> 4.2.1?

A lot of ports can't be build with clang. You can add something like
this to your /etc/make.conf (modifying paths accordingly) :
.if ${.CURDIR:M/usr/src*} ||
${.CURDIR:M*/usr/ports/emulators/virtualbox-ose-kmod*}
.if !defined(CC) || ${CC} =3D=3D "cc"
CC=3Dclang
.endif
.if !defined(CXX) || ${CXX} =3D=3D "c++"
CXX=3Dclang++
.endif
NO_WERROR=3D
WERROR=3D
.endif

That's what I use. Note the first if statement.

Cheers

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