[Development] Enabling -fPIE globally

Thiago Macieira thiago.macieira at intel.com
Sun Jan 29 19:12:53 CET 2012


On Sunday, 29 de January de 2012 18.25.10, Stephen Kelly wrote:
> If qmake can tell us (at building-Qt-time) that this is needed, I'm sure we
> can add something to the Qt CMake files to make this easier.

contains(QT_CONFIG, reduce_relocations):message("Use -fPIE")

> > If you have a problem with this, speak up. Linux distributors, especially,
> > let us know what you think.
> 
> Are you sure they're on this mailing list?

No. I expect we'll get more feedback after the alpha release.

> > For more background, please read my blogs on the "sorry state of libraries
> > on Linux". But the summary is: function pointer comparison is broken with
> > current versions of gcc and the -Bsymbolic-functions option we've made the
> > default.
> 
> I have to admit that I don't know what effect this change would have on
> preloading.

None.

This changes *applications*, not the libraries.

-- 
Thiago Macieira - thiago.macieira (AT) intel.com
  Software Architect - Intel Open Source Technology Center
     Intel Sweden AB - Registration Number: 556189-6027
     Knarrarnäsgatan 15, 164 40 Kista, Stockholm, Sweden
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