Compiling octave specifying path to GraphicsMagick library

[Carnë Draug]

Hi everyone

I can't find the option to specify the path for the GraphicsMagick
library when compiling octave. I've looked at ./configure --help but
there is only the --with-magick option which only lets me choose
between GraphicsMagick and ImageMagick but not define the directory
for the library. I have tried (guessing) --with-magick-libdir and
--with-magick-includedir but no success.

I'm trying to do this because the GraphicsMagick library in the system
is compiled for 8bit but I need support for more. As such, I compiled
it again on a separate dir and want to use it with octave.

Carnë