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Re: Abt -fpic, -fPIC Option

From: Richard Sandiford <richard at codesourcery dot com>
To: Ian Lance Taylor <iant at google dot com>
Cc: "Rohit Arul Raj" <rohitarulraj at gmail dot com>, gcc at gcc dot gnu dot org
Date: Wed, 25 Oct 2006 10:09:00 +0100
Subject: Re: Abt -fpic, -fPIC Option
References: <c356fd4e0610240639s22ae2014k30791b0870f56d8@mail.gmail.com> <m3lkn5u7ig.fsf@localhost.localdomain>

Ian Lance Taylor <iant@google.com> writes:
> "Rohit Arul Raj" <rohitarulraj@gmail.com> writes:
>
>> I have built a cross-compiler for m68k-elf with GCC 4.1.1.
>> I need to know the difference in implementations of -fpic and -fPIC
>> for this particular target.
>
> -fpic uses a 16-bit offset when accessing the GOT.  -fPIC uses a
> 32-bit offset.  Thus -fpic may fail if you have more than 16K global
> variables.  and -fPIC will fail on the 68000 (are there still 68000s
> out there?).

FWIW, Coldfire targets, like the 68000, are also restricted to 16-bit offsets.

Richard

References:
- Abt -fpic, -fPIC Option
  - From: Rohit Arul Raj
- Re: Abt -fpic, -fPIC Option
  - From: Ian Lance Taylor

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