[GRASS-dev] debugging nviz with TclTk 8.5 aqua

[William Kyngesburye]

On Jul 27, 2008, at 12:27 PM, Glynn Clements wrote:

>> Of course, some extra detection logic is needed to check for the
>> frameworks in /Library/Frameworks, then /System/Library/Frameworks.
>
> configure doesn't autodetect paths, it only confirms that any paths
> specified by the user work. If a path needs to be passed onto the
> compiler or linker, the user has to supply it.
>
Well, for using the system paths, a path is still needed to set the  
include flags, but not for the -F path.

Like -L flags, they are unnecessary for default system paths (/usr/ 
lib, or /System/Library/Frameworks and /Library/Frameworks), and can  
cause trouble in the search order (on OSX) if used (you get the system  
framework when you wanted a custom-build framework).

If we don't autodetect the path, but need a path for the headers, then  
configure should not set -F if the user uses one of the system paths.


> I take it that -framework is limited to the linker? I.e. the compiler
> still needs explicit -I flags?
>
-framework is like -L, but for frameworks - yes, a linker flag only.   
There is a way to  include headers without -I flags, but it requires  
changes to the sources, and it doesn't work for PrivateHeaders.

#include <Tk/tk.h>

looks for tk.h in the Tk.framework/Headers.


>> Also, the framework option should be rejected if opengl is not aqua.
>
> It's still meaningful if OpenGL is disabled.
>
If linking tcltk is only for NVIZ, then tcltk should match the opengl  
setting.  The tcltk framework is always aqua, you can't build tcltk  
x11 as a framework.

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

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