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Re: -mcpu vs. binutils 2.13.90.0.18

To: Thiemo Seufer <ica2_ts@csv.ica.uni-stuttgart.de>
Subject: Re: -mcpu vs. binutils 2.13.90.0.18
From: Daniel Jacobowitz <dan@debian.org>
Date: Tue, 13 May 2003 15:36:25 -0400
Cc: linux-mips@linux-mips.org, Guido Guenther <agx@sigxcpu.org>
In-reply-to: <20030513192735.GA16497@rembrandt.csv.ica.uni-stuttgart.de>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <20030318154155.GF2613@bogon.ms20.nix> <20030318160303.GN13122@rembrandt.csv.ica.uni-stuttgart.de> <20030318174241.GG2613@bogon.ms20.nix> <20030318190841.GO13122@rembrandt.csv.ica.uni-stuttgart.de> <20030318232454.GA19990@bogon.ms20.nix> <20030319001652.GB19189@rembrandt.csv.ica.uni-stuttgart.de> <20030513113316.GU3889@bogon.ms20.nix> <20030513192735.GA16497@rembrandt.csv.ica.uni-stuttgart.de>
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On Tue, May 13, 2003 at 09:27:35PM +0200, Thiemo Seufer wrote:
> Guido Guenther wrote:
> [snip]
> > > > So to build kernels for say IP22 R5k I'd change the current
> > > >         GCCFLAGS += -mcpu=r5000 -mips2 -Wa,--trap
> > > > to 
> > > >         GCCFLAGS += -mabi=o32 -march=R5000 -mtune=R5000 -Wa,--trap
> > > > where as for R4X00 I use
> > > >         GCCFLAGS += -mabi=o32 -march=R4600 -mtune=R4600 -Wa,--trap
> > > > Correct?
> > > 
> > > Yes, this should work. You can leave the -mtune out, since it defaults
> > > to the value of -march anyway.
> > Just for completeness: I had to use:
> >     GCCFLAGS += -mabi=32 -march=r4600 -mtune=r4600 -Wa,--trap
> > to make gcc-3.3 happy (note the 32 instead of o32).
> 
> Yes, IIRC 64 vs. n64 has the same problem.

That's not quite the same: 64 is o64, n64 is n64.  GCC's never called
the 32-bit ABI "o32".

-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer

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