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Re: Cross Tools Help

From: "David Brown" <david at westcontrol dot com>
To: "sridhar" <nsridhar at igcar dot ernet dot in>
Cc: <crossgcc at sources dot redhat dot com>
Date: Mon, 5 May 2003 09:40:58 +0200
Subject: Re: Cross Tools Help
References: <Pine.SV4.3.93.1030505121132.21934A-100000@eid>


> Dear Mr.Gatliff,
>
> When i build a m68k-elf cross tool chain, during configure step i
> specify target=m68k-elf and the toolset is built for all families of m68k
> like CPU's 68K, 68020, 68030, 68040, etc.
>
> If i want to build the toolset for a particular CPU only (say
> 68020), how do i do it?
>

It's the same toolset, since the CPUs are very similar.  To specify the
exact CPU type, use a compiler flag such as "-m68020".  If you don't use
such a flag, the code generated will be restricted to instructions that are
available on all the chips - thus it will avoid instructions such as the bit
manipulation instructions that were introduced in the 68020.





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Follow-Ups:
- Re: Cross Tools Help
  - From: sridhar
- Re: Cross Tools Help
  - From: Joel Sherrill

References:
- Re: Cross Tools Help
  - From: sridhar

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