Re: MagickLib requirement

[c.]

On 1 Sep 2013, at 10:40, Daniel J Sebald <address@hidden> wrote:

> Carnë,
> 
> With the following changeset:
> 
> http://hg.savannah.gnu.org/hgweb/octave/rev/ba79ba4e83ab
> 
> my version of tools is just a little too old so that I get the following 
> erros:
> 
> ../../octave/libinterp/dldfcn/__magick_read__.cc: In function 'octave_value 
> magick_to_octave_value(const MagickLib::CompressionType&)':
> ../../octave/libinterp/dldfcn/__magick_read__.cc:1484:12: error: 
> 'LZMACompression' is not a member of 'Magick'
> ../../octave/libinterp/dldfcn/__magick_read__.cc:1486:12: error: 
> 'JPEG2000Compression' is not a member of 'Magick'
> ../../octave/libinterp/dldfcn/__magick_read__.cc:1488:12: error: 
> 'JBIG1Compression' is not a member of 'Magick'
> ../../octave/libinterp/dldfcn/__magick_read__.cc:1490:12: error: 
> 'JBIG2Compression' is not a member of 'Magick'
> 
> Is Octave meant to be compilable with older versions of ImageMagick library?  
> I.e., create some functions like
> 
> #if IMAGEMAGICVERSION < 6.6.??
> void LZMACompression ()
> {
>  error ("Requires ImageMagick version 6.??.?? or higher");
> }
> void JPEG2000Compression ()
> {
>  error ("Requires ImageMagick version 6.??.?? or higher");
> }
> etc.
> #endif
> 
> Or is the expectation that ImageMagick should just be up to near the most 
> recent version?
> 
> Dan


Maybe this problem is related to the various bugs being reported that currently 
prevent image processing functions? e.g.:

https://savannah.gnu.org/bugs/?39698
https://savannah.gnu.org/bugs/?39761
https://savannah.gnu.org/bugs/?39913

Carnë, do you think that updating GraphicsMagick might help avoiding these 
issues? I've been building with GraphicsMagick disabled
lately but I'll need to work with images in the next few weeks ...

c.