[GRASS-dev] errors compiling nviz in GRASS 7

[William Kyngesburye]

On Jul 6, 2008, at 9:05 PM, William Kyngesburye wrote:

> On Jul 6, 2008, at 6:58 PM, Michael Barton wrote:
>
>> Here is the location of the native OGL (called AGL on Mac).
>>
>> /System/Library/Frameworks/AGL.framework/Versions/A/Headers/gl.h
>>
> Which is a symlink to /System/Library/Frameworks/OpenGL.frameworks/ 
> Headers/gl.h.  Which is what you get when you configure with --with- 
> opengl=aqua.
>
> Which spits out a bunch cpp errors in the Carbon includes, from the  
> AGL include.  More than I can wrap my brain around at the moment,  
> but it looks like we need to work on this.
>

Learned a new trick today (probably standard stuff for the programming  
gurus) - I added -E to the compile flags and found that an unexpected  
macro was substituted for a buried Carbon struct:

typedef struct CMFixedXYZColor {
   Fixed               X;
   Fixed               Y;
   Fixed               Z;
} CMFixedXYZColor;

which came out as:

typedef struct CMFixedXYZColor {
   Fixed 0;
   Fixed 1;
   Fixed 2;
} CMFixedXYZColor;


It appears X, Y and Z (all caps, that is) are defined in gstypes.h in  
GRASS.  I was able to fix the problem by moving the lines in nviz.h:

#include <grass/gsurf.h>
#include <grass/gstypes.h>

to *after* the GL includes.


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

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