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Subject: Re: Segfault with Faster MDCT patch and -fPIC

Re: Segfault with Faster MDCT patch and -fPIC

From: Thomas Martitz <>
Date: Mon, 20 Sep 2010 17:12:33 +0200

  On 20.09.2010 11:02, Slawomir Testowy wrote:
> 2010/9/18 Nils Wallménius<>:
>> gcc lets you specify the pic register with -mpic-register= so it would
>> be a qucick test to try with r11 or something.
>> Nils
> Unfortunately, this doesn't work:
> configure:3276: checking whether the C compiler works
> configure:3298:
> /opt/freescale/usr/local/gcc-4.1.2-glibc-2.5-nptl-3/arm-none-linux-gnueabi/bin/arm-none-linux-gnueabi-gcc
> -std=gnu89 -g -ffast-math -fsingle-precision-constant
> -mpic-register=r11 -fPIC -DPIC conftest.c>&5
> conftest.c:1: error: unable to use 'r11' for PIC register
> configure:3302: $? = 1
> configure:3340: result: no
> The same happends with r12 register. Registers r1-10 are used directly
> in the assembly.

Is this a bug in gcc? It's supposed to work.

Best regards.
Received on 2010-09-20

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