[GRASSLIST:3147] Re: mac os X's libGLU

[Wouter Buytaert]

Indeed, you can't compile grass using the openGL libraries for OS X. You 
need the Xfree libraries. They are:

/usr/X11R6/lib/libGLU.1.dylib
/usr/X11R6/lib/libGL.1.dylib
/usr/local/lib/libdl.dylib

They are not included in the Xfree86 installation that is used by fink, 
and maybe some others. However, they are included in the osxgnu.org 
distribution. (www.osxgnu.org; this distribution is also mentioned on 
apple's website: 
http://www.apple.com/downloads/macosx/unix_apps_utilities/xfree86.html)

This is a very easy GUI package that includes Xfree86 4.2 and Xdarwin 
1.0.6. Maybe it is a good idea to mention these links on the OS X 
support page?

So, starting the nviz tool does not give any error messages any more. 
However it sticks at a (graphical) "please wait" message :-(


Quim Soler i Subils heeft op vrijdag 8 februari 2002 om 03:45 het 
volgende geschreven:

> Hello,
>
> Some weeks ago I tried to compile nviz with the OpenGL framework bundled
> with the System 10.1 too. At this moment I don't remember the exact path
> but It lives in a folder under
> System/Library/frameworks/OpenGL.framework with the rest of the OpenGL 
> libraries.
> I think you must write first its path into the "head" file of your grass
> distribution and you will compile the code related to libGLU without
> problem.
>
> But this is not the major problem you can find compiling nviz with the
> System 10.1 :-(.
> It seems every platform has its own OpenGL implementation and the System
> 10.1 implementation (who lives into
> /System/Library/frameworks/AGL.framework) doesn't work with the nviz
> code. At compiling time you would find some glx's undefined symbols.
>
> Some weeks ago this problem was discussed and Glynn Clements wrote 
> (11/01/2002):
>
>> [the symbols] are specific to X11. Your OpenGL library needs to be one 
>> targeted
>> to X, and not to the native MacOS graphics system.
>>
>> XFree86 4.* includes OpenGL libraries in /usr/X11R6/lib; those should
>> work.
>>
>> The core OpenGL API doesn't include any functions for setting up or
>> controlling the rendering environment, as the details of such
>> functions are tied to the graphics/windowing system. Each platform has
>> its own functions to do this: glX* on X11, wgl* on Windows, agl* on
>> MacOS, pgl* on OS/2.
>
> Here I found some problems.  I downloaded a Xfree86 4.* distribution and
> I compiled it but the problem still persisits.
> My question is, what it's the openGL library that I should have into
> /usr/X11R6/lib? Maybe it's not compiled by default…
>
> Thank you very much,
> Quim Soler
>