[gentoo-user] libblas question (a propos digikam)

[gentoo-user] libblas question (a propos digikam)

[luis jure]

hello list,

on my ~amd64 system, digikam (2.5.0) now fails to start with:

digikam: error while loading shared libraries: libblas.so.0: cannot open
shared object file: No such file or directory

searching for libblas, i found these two orphaned files, not belonging to
any installed package:

/usr/lib64/libblas.a
/usr/lib64/libblas.so
(no libblas.so.0)

libblas.so is a dead link to a non-existent blas/reference/libblas.so
the same with libblas.a

i have sci-libs/blas-reference and virtual/blas installed, but i really
don't understand how they work.

i googled for this problem, and searched bugs.gentoo.org also, but i
couldn't find anything that could help me understand and solve the
problem. now i can't rebuild digikam-2.5.0 that i have installed, and
older versions fail also.

any ideas?

TIA,

lj

Re: [gentoo-user] libblas question (a propos digikam)

[Helmut Jarausch]

On 04/03/2012 05:27:45 PM, luis jure wrote:
> 
> hello list,
> 
> on my ~amd64 system, digikam (2.5.0) now fails to start with:
> 
> digikam: error while loading shared libraries: libblas.so.0: cannot  
> open
> shared object file: No such file or directory
> 
> searching for libblas, i found these two orphaned files, not  
> belonging to
> any installed package:
> 
> /usr/lib64/libblas.a
> /usr/lib64/libblas.so
> (no libblas.so.0)
> 
> libblas.so is a dead link to a non-existent blas/reference/libblas.so
> the same with libblas.a
> 
> i have sci-libs/blas-reference and virtual/blas installed, but i  
> really
> don't understand how they work.
> 
> i googled for this problem, and searched bugs.gentoo.org also, but i
> couldn't find anything that could help me understand and solve the
> problem. now i can't rebuild digikam-2.5.0 that i have installed, and
> older versions fail also.
> 
> any ideas?
> 

you can check with

eselect blas list

if the right (installed) package is in use.

Helmut.

Re: [gentoo-user] libblas question (a propos digikam)

[luis jure]

on 2012-04-03 at 18:02 Helmut Jarausch wrote:

>you can check with
>
>eselect blas list
>
>if the right (installed) package is in use.

aha! funny, i had no blas selected. never had to do that before, is this
new?

whatever, thanks for the hint. perhaps i advanced a little i selected
"reference" (the only blas i had installed), but now when i try to rebuild
digikam, it fails thus:

In file included
from /var/tmp/portage/media-gfx/digikam-2.5.0/work/digikam-2.5.0/core/libs/threadimageio/pgfutils.cpp:49:0:
/var/tmp/portage/media-gfx/digikam-2.5.0/work/digikam-2.5.0_build/digikam/utils/config-digikam.h:64:0:
warning: "PGFCodecVersionID" redefined
/usr/include/libpgf/PGFtypes.h:50:0: note: this is the location of the
previous definition


so here i am, stuck again...

[gentoo-user] libmp4v2-1.9.1_p479 (was problems with digikam)

[luis jure]

i realized my problems trying to rebuild digikam-2.5.0 were related to the
latest version of media-libs/libmp4v2 (1.9.1_p479), that i had upgraded a
couple of days ago.

after masking it and downgrading to libmp4v2-1.9.1, i could compile digikam
again. problems that i was having compiling other packages also
disappeared.