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From: Mel <fbsd.questions@rachie.is-a-geek.net>
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Date: Sat, 23 Feb 2008 20:41:49 +0100
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Subject: Re: Unable to compile anything from ports
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On Saturday 23 February 2008 20:11:18 Jasvinder S. Bahra wrote:
> > It has a Via CPU?
> > Comment that option and try again.
>
> Mel,
>
> It does indeed have a Via cpu.  The box is running on a "VIA EPIA EK
> 8000EG" motherboard (which has a CPU integrated into it). If I run "cat
> /var/log/dmesg.today | grep CPU", I get...
>
> CPU: VIA C3 Nehemiah+RNG+AES (800.03-MHz 686-class CPU)
>
> Regardless, I commented out all three settings in /etc/make.conf (CPUTYPE,
> CFLAGS and COPTFLAGS), and tried the 'make install clean' routine again.
>
> Unfortunately, Portupgrade, Aide and ISC-DHCP3-Server still fail, though at
> a different point...
>
> ===== Portupgrade ======================================
> config.status: creating Makefile
> ===>  Building for ruby-1.8.6.111_1,1
> cc -O2 -fno-strict-aliasing -pipe    -fPIC  -DRUBY_EXPORT -I. -I. -c
> array.c array.c: In function `rb_ary_modify':
> array.c:72: internal compiler error: Illegal instruction: 4
> Please submit a full bug report,
> with preprocessed source if appropriate.
> See <URL:http://gcc.gnu.org/bugs.html> for instructions.
> *** Error code 1

This clearly points at a compiler bug, with the VIA cpu, but since 
world/kernel build cleanly and anything else bugs out quite early, I would 
suspect an optimization bug.
Could you set the following in /etc/make.conf:
CFLAGS=-pipe -O0 # capital O, number zero

As a shortcut, you could go to the ruby workdir:
cd `make -f /usr/ports/lang/ruby18/Makefile -V WRKSRC`

then type:
cc -pipe -O0 -fPIC -DRUBY_EXPORT -I. -c array.c

Then again, it could be the compiler you built yourself is broken. Easy to 
test if you can rebuild world again now.
-- 
Mel