Re: Octave 4.0 on Mac OS Yosemite (with gui!)

[Ben Abbott]

> On Jul 25, 2015, at 11:07 AM, Dr. Sebastian Schöps <address@hidden> wrote:
> 
> 
>>> Mike Miller-4 wrote
>>>> There was a recent change that figures for the manual are built by the
>>>> default toolkit, which means qt if available, then fltk if available,
>>>> then gnuplot. But there is no check ensuring that you also have osmesa
>>>> present and working. I could see that as a worthy enhancement, fall back
>>>> to gnuplot if no osmesa.
>>>> 
>>>> -- 
>>>> mike
>>> 
>>> That would be great. Getting osmesa seems to be problematic on several
>>> platforms (also ubuntu as seen in the other recent thread)
>> 
>> Agreed. I would also like to be able to figure out how to use the osmesa 
>> support provided by XQuartz. Does anyone know if there are known issues, or 
>> are we just doing something wrong (not setting LDFLAGS or LIBS correctly?).
>> 
>> Ben
> 
> I did some experiments with osmesa but so far without success. homebrew has a 
> dedicated formula for osmesa 
> (https://github.com/Homebrew/homebrew-x11/blob/master/mesalib-glw.rb) but it 
> disables gl-osmesa which seems to be the most important part.

The Qt libs for Mac OSX use native graphics, while osmesa support is part of 
X11. Perhaps this is a problem? Does homebrew have an OSMesa formula? I’ve just 
installed Fink’s package for osmesa and had to tinker a bit for configure to 
work.

Initially, I got ...

checking osmesa.h usability... no
checking osmesa.h presence... no
checking for osmesa.h... no
checking GL/osmesa.h usability... yes
checking GL/osmesa.h presence... yes
checking for GL/osmesa.h... yes
checking for OSMesaCreateContext in -lOSMesa... no
configure: WARNING: OSMesa library not found.  Offscreen rendering with OpenGL 
will be disabled.

I then addeded "-L/sw/lib/mesa“ to the LDFLAGS and "-I/sw/include/mesa” to the 
CPPFLAGS. After than configure found and was able to use the OSMesa library. 
When done, configure reported …

        OSMesa libraries:            -lOSMesa

My build fails due to errors like ...

        /sw/include/mesa/GL/osmesa.h:249:1: error: unknown type name 'GLAPI'
        GLAPI GLboolean GLAPIENTRY

Perhaps the osmesa included with XQuartz is creating a problem?

            --with-OSMesa-includedir=/sw/include/mesa \
            --with-OSMesa-libdir=/sw/lib/mesa \

Does anyone have any insight?

> new question: do you guys have also problems with the titlebar icons? Please 
> see screenshot here 
> https://dl.dropboxusercontent.com/u/2079838/octave4_yosemite_icons.png 

Yes, I also see the icon problem.