Re: [Qemu-devel] [PATCH] configure: Enable pie for powerpc and arm Linux

["Andreas Färber" <afaerber@suse.de>]

Am 04.11.2013 22:16, schrieb Paolo Bonzini:
> Il 04/11/2013 21:51, Richard Henderson ha scritto:
>>>>  if test "$pie" = ""; then
>>>>    case "$cpu-$targetos" in
>>>> -    i386-Linux|x86_64-Linux|x32-Linux|i386-OpenBSD|x86_64-OpenBSD)
>>>> +    i386-Linux|x86_64-Linux|x32-Linux|ppc*-Linux|arm*-Linux|aarch64*-Linux|i386-OpenBSD|x86_64-OpenBSD)
>> I'd much prefer that we have a blacklist than a whitelist for this.
>> Honestly, most ELF systems can support PIE, and we have very few
>> non-ELF systems to support.
> 
> Since the test is followed by a compile test, we probably do not even
> need the whitelist.

I remember reading a report here that someone ran into a link issue with
PIE on x86 at build time (check went okay) and was able to resolve it
via --disable-pie. Unfortunately I couldn't locate the post - do you
remember what that was about? Was that some BSD rather than Linux maybe?

It's probably a good idea to still allow overriding it, whether we
white- or blacklist or trust a compile test.

Andreas

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