Your message dated Sat, 14 Sep 2013 21:04:33 +0000
with message-id <[email protected]>
and subject line Bug#722252: fixed in lapack 3.4.2+dfsg-2
has caused the Debian Bug report #722252,
regarding lapack: -Bsymbolic-functions prevents override of xerblas_
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
(NB: If you are a system administrator and have no idea what this
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--
722252: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=722252
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: lapack
Version: 3.4.2+dfsg-1
Severity: wishlist
The lapack build uses dpkg-buildflags --get LDFLAGS to obtain the LDFLAGS.
This can include -Bsymbolic-functions in some distributions (e.g.
ubuntu, but not debian).
The use of -Bsymbolic-functions to create liblapack.so binds the
xerblas_ implementation to the one provided in lapack itself.
This is very problematic as the lapack xerblas_ aborts the process on
invalid parameters.
User programs must have the option to override this error handler with
their own code.
To fix this to work on all derivatives and in case of a debian default
change please adapt the build do handle it.
There are two options, either strip the variable from dpkg-buildflags
output (DEB_LDFLAGS_STRIP) or keep it in and provide ld with a list of
functions to not bind to the library with --dynamic-list:
$ cat lapack.dym
{
xerblas;
# or LAPACKE_xerblas;
};
§ gcc -shared ... -Bsymoblic-functions --dynamic-list=lapack.dym
To test it use attached c file (linked against liblapacke) which should
print the overrided xerblas. This could be used as an autopkgtest so
derivatives are notified of the issue when they change their dpkg defaults.
#include <stdio.h>
#include <lapacke.h>
void LAPACKE_xerbla( const char *name, lapack_int info )
{
if( info < 0 ) {
printf( "override %d in %s\n", -(int) info, name );
}
}
int main (int argc, const char * argv[])
{
double a[5][3] = {1,1,1,2,3,4,3,5,2,4,2,5,5,4,3};
double b[5][2] = {-10,-3,12,14,14,12,16,16,18,16};
lapack_int info,m,n,lda,ldb,nrhs;
int i,j;
m = 5;
n = 9;
nrhs = 2;
lda = 3;
ldb = 2;
info = LAPACKE_dgels(LAPACK_ROW_MAJOR,'N',m,n,nrhs,*a,lda,*b,ldb);
printf("%d\n", info);
for(i=0;i<n;i++)
{
for(j=0;j<nrhs;j++)
{
printf("%lf ",b[i][j]);
}
printf("\n");
}
return(info);
}
--- End Message ---
--- Begin Message ---
Source: lapack
Source-Version: 3.4.2+dfsg-2
We believe that the bug you reported is fixed in the latest version of
lapack, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to [email protected],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Sébastien Villemot <[email protected]> (supplier of updated lapack package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [email protected])
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Format: 1.8
Date: Sat, 14 Sep 2013 21:59:36 +0200
Source: lapack
Binary: liblapack3 liblapack3gf liblapacke liblapacke-dev liblapack-dev
liblapack-pic liblapack-test liblapack-doc liblapack-doc-man
Architecture: source amd64 all
Version: 3.4.2+dfsg-2
Distribution: unstable
Urgency: low
Maintainer: Debian Science Team
<[email protected]>
Changed-By: Sébastien Villemot <[email protected]>
Description:
liblapack-dev - Library of linear algebra routines 3 - static version
liblapack-doc - Library of linear algebra routines 3 - documentation
liblapack-doc-man - Library of linear algebra routines 3 - documentation
(manual page
liblapack-pic - Library of linear algebra routines 3 - static PIC version
liblapack-test - Library of linear algebra routines 3 - testing programs
liblapack3 - Library of linear algebra routines 3 - shared version
liblapack3gf - Transitional package for liblapack3
liblapacke - Library of linear algebra routines 3 - C lib shared version
liblapacke-dev - Library of linear algebra routines 3 - Headers
Closes: 695825 718948 722252
Changes:
lapack (3.4.2+dfsg-2) unstable; urgency=low
.
[ Sébastien Villemot ]
* Bump to debhelper compat level 9
* Simplification and improvement of debian/rules:
+ use dh
+ remove hack to workaround timeouts in testsuite
+ ship testsuite summary generated by LAPACK build system instead of
generating our own
+ do not run testsuite if DEB_BUILD_OPTIONS contains "nocheck"
(Closes: #718948)
+ ensure that flags from dpkg-buildflags are injected everywhere
* Install static library in liblapacke-dev
* Remove remnants of old system for notifying testsuite errors at
installation of the library
* Switch VCS to Git
* liblapack-dev now alternatively depends on libblas.so (Closes: #695825)
* liblapack-dev now provides liblapack.so (instead of liblapack-3.so), for
consistency with libblas-dev
* Do not ship a copy of jquery.js; instead link to the version from the
Debian
package
* Fix debian/watch
.
[ Julian Taylor ]
* strip -Bsymbolic-functions from LDFLAGS. -Bsymbolic-functions breaks
xerbla_ error handling overrides as internal calls to it will not go
over the plt anymore. With bfd linker --dynamic-list could be used
instead but it doesn't seem work with gold linker. (Closes: #722252)
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