[GRASS-user] Problems with OpenGL when compiling grass-6.4.0 on Mac OS X 10.5.4

[William Kyngesburye]

On Sep 21, 2008, at 3:34 PM, Elvis Dowson wrote:

> I get the following errors: /Users/elvis/Tool/grass-6.4.0/lib/nviz
>
> cc -dynamiclib -compatibility_version 6.4 -current_version 6.4 - 
> install_name /usr/local/grass-6.4.svn/lib/libgrass_nviz.dylib -o / 
> Users/elvis/Tool/grass-6.4.0/dist.i386-apple-darwin9.5.0/lib/ 
> libgrass_nviz.6.4.svn.dylib -L/Users/elvis/Tool/grass-6.4.0/ 
> dist.i386-apple-darwin9.5.0/lib -arch i386 -Os -arch i386 -Os
...
>     -L/usr/local/lib -lgdal -L/usr/X11/lib -lGL  -lGLU
...
> Undefined symbols:

Everything looks right - that's what my cc command looks like also.

> If I look at libGL.dylib in the /usr/X11/lib folder, it is actually  
> a symbolic link to /System/Library/Frameworks/OpenGL.framework/ 
> Versions/A/Libraries/libGL.dylib whose size is only 568kb.
>
> However, I can see that there is another file called libGL.1.dylib  
> in the /usr/X11/lib folder whose size is 2.3MB. Perhaps this is the  
> correct one?
>
Ah, there's your problem.  They should only be symlinks within the X11/ 
lib dir:

lrwxr-xr-x    1 root  wheel       13 Oct 27  2007 libGL.1.2.dylib ->  
libGL.1.dylib
-rwxr-xr-x    1 root  wheel  2390592 Aug 21 23:45 libGL.1.dylib
lrwxr-xr-x    1 root  wheel       13 Oct 27  2007 libGL.dylib -> libGL. 
1.dylib
lrwxr-xr-x    1 root  wheel       14 Oct 27  2007 libGLU.1.3.dylib ->  
libGLU.1.dylib
-rwxr-xr-x    1 root  wheel  3304064 Aug 21 23:45 libGLU.1.dylib
lrwxr-xr-x    1 root  wheel       14 Oct 27  2007 libGLU.dylib ->  
libGLU.1.dylib

Try:

sudo ln -sf libGL.1.dylib /usr/X11/lib/libGL.dylib
sudo ln -sf libGL.1.dylib /usr/X11/lib/libGL.1.2.dylib

Use a similar ln for the GLU libs if they are also pointing to the  
system framework.

-----
William Kyngesburye <kyngchaos*at*kyngchaos*dot*com>
http://www.kyngchaos.com/

"This is a question about the past, is it? ... How can I tell that the  
past isn't a fiction designed to account for the discrepancy between  
my immediate physical sensations and my state of mind?"

- The Ruler of the Universe