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Re: supporting --with-cpu=default32 option for x86_64

From: James E Wilson <wilson at specifixinc dot com>
To: Nitin Gupta <toolchain at gmail dot com>
Cc: gcc at gcc dot gnu dot org
Date: Thu, 17 Mar 2005 21:36:27 -0800
Subject: Re: supporting --with-cpu=default32 option for x86_64
References: <4c97fada050316153448180adc@mail.gmail.com>

Nitin Gupta wrote:

following lines were added in config.gcc in order to recognise
--with-cpu=default32. But I dont understand , how it was actually made
to default to 32-bit.

The trick is to look at the default64 code, and note what default32 doesn't do that default64 does do.

The code you quoted is only clearing with_cpu when default32/default64 are given, because these are valid options to the actual gcc code. These just mean "use whatever the default with_cpu value is". -- Jim Wilson, GNU Tools Support, http://www.SpecifixInc.com

References:
- supporting --with-cpu=default32 option for x86_64
  - From: Nitin Gupta

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