Bug#701830: vlc: FTBFS on powerpcspe (illegal insns due to -mtune=G4)

[Benjamin Drung]

Am Freitag, den 01.03.2013, 16:05 +0100 schrieb Roland Stigge:
> Hi,
> 
> On 03/01/2013 03:43 PM, Benjamin Drung wrote:
> > Am Mittwoch, den 27.02.2013, 18:47 +0100 schrieb Roland Stigge:
> >> As you can see above, -mtune=G4 is used by default, leading to the above
> >> illegal instructions. The attached patch fixes this by enabling altivec only on
> >> powerpc _except_ powerpcspe, and doing "confflags += --with-tuning=8548" which
> >> is propagated to gcc as "-mtune=8548" on powerpcspe.
> > 
> > Your patch logic looks complicated (multiple filters). What are the
> > values of
> > 
> > DEB_HOST_ARCH
> > DEB_HOST_ARCH_CPU
> > 
> > on powerpc and powerpcspe?
> 
> On powerpcspe, we have the following settings:
> 
> DEB_HOST_ARCH=powerpc
> DEB_HOST_ARCH_CPU=powerpcspe

Isn't it the other way around?

> The two filters on the patch are just used to detect the case of powerpc
> in general, but excluding the powerpcspe case (a special case of
> powerpc). Resulting in "powerpc-" for the case with altivec. In all
> other cases (including powerpcspe and non-powerpc), we disable altivec.

What do you think about the alternative attached patch?

-- 
Benjamin Drung
Debian & Ubuntu Developer
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