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Octave (3.4.0) native graphics on Linux with FLTK 2 and libGL

From: John A. Murdie
Subject: Octave (3.4.0) native graphics on Linux with FLTK 2 and libGL
Date: Tue, 05 Apr 2011 12:17:03 +0100
User-agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv: Gecko/20110303 Thunderbird/3.1.9

I've just built Octave 3.4.0 on 64-bit Slackware Linux 13.1, not having built it for a while. I always seem to have trouble with native graphics! First I tried just './configure', but although our OpenGL Mesa (7.8.1) library was found that didn't find FLTK, so I then tried './configure --with-fltk-prefix=/usr' and FLTK was then found - but I saw the message:

"configure: WARNING: FLTK does not have OpenGL support. Native graphics will be disabled."

We have 64-bit FLTK 2.2.0 installed - the configuration reporting script is fltk2-config.

I appreciate that the Octave developers are working hard to improve and extend the program, but I can't find a 'HOWTO' for native graphics (though there are several postings in the mailing lists - most recently - though, alas, the HTML links there are broken).

I wish I had the knowledge to write something for the Octave FAQ answers on this subject. Can anyone suggest how I can make progress with building Octave 3.4.0 with native graphics, please?

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