Re: weird problem with __magick_read__.oct

[Jaroslav Hajek]

On Thu, Jul 16, 2009 at 8:16 PM, John W. Eaton<address@hidden> wrote:
> On 15-Jul-2009, John W. Eaton wrote:
>
> | On  5-Jul-2009, Andy1978 wrote:
> |
> | | John W. Eaton-3 wrote:
> | | >
> | | > I recently noticed that imread wasn't working for me.  Looking closer,
> | | > I found that __magick_read__ was not defined.  Trying "help
> | | > __magick_read__" produced the error
> | | >
> | | >   error: help: `__magick_read__' not found
> | | > ....
> | | > Can anyone else reproduce this problem?
> | | > jwe
> | | >
> | |
> | | I have exactly the same problem with the latest development sources 3.1.55
> | | debian sid Linux version 2.6.26-1-686 (Debian 2.6.26-13lenny2)
> | | (address@hidden) (gcc version 4.1.3 20080704 (prerelease) (Debian
> | | 4.1.2-25)) #1 SMP Fri Mar 13 18:08:45 UTC 2009
> | | GraphicsMagick-config --version: 1.3.5
> | | gcc -v: gcc version 4.3.3 (Debian 4.3.3-13)
> | |
> | | How can I help to track down the problem?
> |
> | If you can find out why dlopen/dlsym fails to find the function if it
> | is named __magick_read__ but succeeds if the name is something else,
> | then that might be a start.
>
> This was probably bad advice, as I seem to have misremembered the
> symptoms.  Anyway, please try the following change:
>
>  http://hg.savannah.gnu.org/hgweb/octave/rev/db08c2376970
>
> It seems that the --ldflags option for Magick++-config produces
>
>  -L/usr/lib -Wl,-z,relro -pie -L/usr/lib/X11 -L/usr/lib -L/usr/lib
>
> on my system.  Passing "-pie" to g++ was apparently the problem.
>
> jwe
>

Applied to 3.2.x.

regards

-- 
RNDr. Jaroslav Hajek
computing expert & GNU Octave developer
Aeronautical Research and Test Institute (VZLU)
Prague, Czech Republic
url: www.highegg.matfyz.cz