Bug#722252: lapack: -Bsymbolic-functions prevents override of xerblas_

[Sébastien Villemot]

Le lundi 16 septembre 2013 à 21:39 +0200, Julian Taylor a écrit :
> On 16.09.2013 16:51, Mike Miller wrote:
> > On Wed, Sep 11, 2013 at 11:50:36 +0200, Julian Taylor wrote:
> >>
> >> I committed a fix + autopkgtests to svn.
> >> I went with stripping the flag, --dynamic-list does not seem work with
> >> the gold linker :(
> > 
> > Hi Julian, thanks for this bug and fix. The blas library also contains
> > its own xerbla routine, I suspect it is equally susceptible to this
> > problem on Ubuntu and other derivatives. Should bugs be filed and
> > equivalent changes made to the blas, atlas, and openblas packages? Are
> > there any other variants that I haven't listed?
> > 
> 
> yes in principle all blas packages can be affected by this, but only
> lapack uses the hardening flags and thus -Wl,-Bsymbolic-functions.
> To be safe it should probably be preemptively stripped from all and
> tests added, numpy or scipy is a good place to test it, as it tries its
> tests with all blas options (in ubuntu).

Note that I plan to introduce soon hardening flags in blas (and possibly
atlas and openblas, though it will be harder). I'll try no to forget
this issue when doing so.

-- 
 .''`.    Sébastien Villemot
: :' :    Debian Developer
`. `'     http://www.dynare.org/sebastien
  `-      GPG Key: 4096R/381A7594

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