Re: How to enable "short-load-bytes" feature of the arm-linux-gcc3.4

[Richard Earnshaw <Richard dot Earnshaw at arm dot com>]

On Mon, 2004-05-17 at 03:07, Pwu wrote:
> ----- Original Message ----- 
> From: "Dan Kegel" <dank@kegel.com>
> To: "Pwu" <pwu@jadechip.com>
> Cc: <crossgcc@sources.redhat.com>
> Sent: Monday, May 17, 2004 8:46 AM
> Subject: Re: How to enable "short-load-bytes" feature of the arm-linux-gcc 3.4
> 
> 
> > Pwu wrote:
> > > I am using crosstool 0.27 to make a arm-linux-gcc toolchain whose version is 3.4.
> > > So I use it to compile my 2.4.19 Linux Kernel, it is said that 
> > > 
> > > cc1: error: invalid option `short-load-bytes'
> > > make: *** [init/main.o] Error 1
> > > 
> > > How to enable "short-load-bytes" feature to the arm-linux-gcc?
> > 
> > Which version of gcc had you been using that option with before?
> > I think that option was renamed:
> > http://gcc.gnu.org/ml/gcc-patches/1999-11n/msg00649.html
> > Can you switch to the new name?
> > - Dan
> 
> Oh, The original arm-linux-gcc's version is 2.95.3 which I get from the arm-linux.org.
> 
> Thank you for your information. So should I change the kernel compile option from "-mshort-load-bytes" to "-malignment-traps"?

Or just remove the flag all-together.  All arm configurations in gcc-3.4
default to -malignement-traps.

The flag is going away.  In 3.5 -malignment-traps will be the only
choice (and the flag has been removed entirely).  This has been done
because ARMv6 processors generally don't support code compiled with
-mno-alignment-traps.

R.

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