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RE: Differing results from cross and native compilers

To: Eric DeVolder <edevolder@razamicroelectronics.com>
Subject: RE: Differing results from cross and native compilers
From: Jim Wilson <wilson@specifix.com>
Date: Tue, 19 Sep 2006 16:22:59 -0700
Cc: Thiemo Seufer <ths@networkno.de>, linux-mips@linux-mips.org
In-reply-to: <2E96546B3C2C8B4CA739323C6058204A0163548C@hq-ex-mb01.razamicroelectronics.com>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <2E96546B3C2C8B4CA739323C6058204A0163548C@hq-ex-mb01.razamicroelectronics.com>
Sender: linux-mips-bounce@linux-mips.org
On Tue, 2006-09-19 at 09:57 -0700, Eric DeVolder wrote:

> -       lw      $4,%got($LC0)($28)
> +       la      $4,$LC0

The difference here is -mexplicit-relocs, which is the default for the
first one (cross) but not the second one (native).

The explicit-reloc support is enabled by a run-time configure test,
which tries to run the assembler to see if you have a new enough version
of GNU as that supports the necessary assembler reloc syntax.
Apparently this is going wrong with the native build.  Perhaps you have
a different binutils version, or perhaps there is a problem with your
PATH, or perhaps binutils and gcc weren't configured with the same
prefix, etc.

If you have the build trees, you can look at the gcc/config.h files and
note that one has HAVE_AS_EXPLICIT_RELOCS defined and the other doesn't.

-- 
Jim Wilson, GNU Tools Support, http://www.specifix.com





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