graphviz port build fails on alpha FBSD 6.3

[Anton Shterenlikht]

On Thu, Jul 10, 2008 at 01:55:48PM +0000, Christian Weisgerber wrote:
> Anton Shterenlikht <mexas at bristol.ac.uk> wrote:
> 
> >    6931 configure:9309: cc -o conftest -O -pipe -mcpu=ev6 -mieee
> > 	-Wstrict-prototypes -Wpointer-arith -Wall -ffast-math
> > 	-I/usr/local/include -I/usr/local/include
> > 	-L/usr/local/lib -L/usr/local/lib conftest.c  >&5
> >    6932 conftest.c:86: warning: function declaration isn't a prototype
> >    6933 conftest.c:96: warning: function declaration isn't a prototype
> >    6934 /usr/lib/crtfastmath.o(.text+0x1c): In function `set_fast_math':
> >    6935 : undefined reference to `__ieee_set_fp_control'
> 
> -ffast-math isn't supported on alpha.  Don't use it.  Ports that
> unconditionally use it need to be fixed.

Naddy thanks, just in time!
I was just discussing this with the port maintainer.
Actually if I put

	CFLAGS= -O -pipe -ffast-math

in /etc/make.conf I get stopped at the config stage:

        configure:3832: error: C compiler cannot create executables

I cannot find much info on -ffast-math. Could you please expand on your
answer.

many thanks
anton

-- 
Anton Shterenlikht
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