Date: Wed, 3 Dec 2003 10:32:32 -0000 From: "Matt Sealey" <matt@kittycat.co.uk> To: "Peter Grehan" <grehan@freebsd.org>, <matt@niblet.co.uk> Cc: freebsd-ppc@freebsd.org Subject: RE: cross compile? Message-ID: <EKENLNBIDBAHKIELDLPNCELKCAAA.matt@kittycat.co.uk> In-Reply-To: <3FCD388F.1030708@freebsd.org>
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Okay, FreeBSD 5.1 compiles for PPC using a cross-compiler, I
practically expected that.
But how do we ./configure the recommended GCC for FreeBSD PPC?
What's the "official" target name?
--
Matt Sealey <matt@kittycat.co.uk>
> -----Original Message-----
> From: Peter Grehan [mailto:grehan@freebsd.org]
> Sent: 03 December 2003 01:13
> To: matt@niblet.co.uk
> Cc: David Leimbach; freebsd-ppc@freebsd.org
> Subject: Re: cross compile?
>
>
> > I have a FreeBSD 5.1 machine here anyway. Knocking up a PPC version
> > on it for my Pegasos would be a sweet deal.
>
> You're all set - FreeBSD already cross-compiles:
>
> cd /usr/src
> make -DNO_WERROR TARGET_ARCH=powerpc buildworld
> make -DNO_WERROR TARGET_ARCH=powerpc buildkernel
>
> I've made two changes that might be required:
>
> RCS file: /usr/home/ncvs/src/lib/libc/powerpc/_fpmath.h,v
> diff -u -r1.2 _fpmath.h
> --- _fpmath.h 5 Apr 2003 22:10:13 -0000 1.2
> +++ _fpmath.h 18 Nov 2003 02:41:36 -0000
> @@ -29,14 +29,13 @@
> union IEEEl2bits {
> long double e;
> struct {
> - unsigned int sign :1;
> - unsigned int exp :15;
> - unsigned long manh :48;
> - unsigned long manl :64;
> + unsigned int sign :1;
> + unsigned int exp :15;
> + unsigned long long manh :48;
> + unsigned long long manl :64;
> } bits;
> };
>
> -/* XXX does powerpc have a normalization bit? */
> #define mask_nbit_l(u) ((void)0)
> #define LDBL_IMPLICIT_NBIT
>
> RCS file: /usr/home/ncvs/src/sys/conf/kern.mk,v
> retrieving revision 1.37
> diff -u -r1.37 kern.mk
> --- kern.mk 4 Nov 2003 23:29:17 -0000 1.37
> +++ kern.mk 18 Nov 2003 03:42:58 -0000
> @@ -68,6 +68,14 @@
> .endif
>
> #
> +# For powerpc disable kernel floating point
> +#
> +.if ${MACHINE_ARCH} == "powerpc"
> +CFLAGS+= -msoft-float
> +INLINE_LIMIT?= 15000
> +.endif
> +
> +#
> # GCC 3.0 and above like to do certain optimizations based on the
> # assumption that the program is linked against libc. Stop this.
> #
>
>
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