CoreFoundation, CoreGraphics and opal

[Vincent Richomme]

Hi,

I have implemented some part of CoreGraphics using plain C and I wanted to
see 
if I could also implement UIkit (iPhone API).
For my purpose I have copied headers from apple(I know it's bad!!!!) and I
have
modified them to compile with gcc (I rewrote properties using old school
getter/setter).
First I just want to see if headers are compatible and the first error I
have is :

This is gnustep-make 2.2.0. Type 'make print-gnustep-make-help' for help.
Making all in Source ...
Making all for library libgnustep-uikit...
 Compiling file UIApplication.m ...
In file included from
C:/Developer/Mingw-NG/GNUstep/System/Library/Headers/CoreGraphics/CoreGraphics.h:4,
                 from ../Headers/UIKit/UIApplication.h:9,
                 from UIApplication.m:1:
C:/Developer/Mingw-NG/GNUstep/System/Library/Headers/CoreGraphics/CGBase.h:9:28:
warning: Availability.h: No such file or directory
In file included from
C:/Developer/Mingw-NG/GNUstep/System/Library/Headers/CoreGraphics/CoreGraphics.h:4,
                 from ../Headers/UIKit/UIApplication.h:9,
                 from UIApplication.m:1:
C:/Developer/Mingw-NG/GNUstep/System/Library/Headers/CoreGraphics/CGBase.h:103:
error: redefinition of typedef 'CGFloat'
C:/Developer/Mingw-NG/GNUstep/System/Library/Headers/Foundation/NSObjCRuntime.h:52:
note: previous declaration of 'CGFloat' was here
In file included from
C:/Developer/Mingw-NG/GNUstep/System/Library/Headers/CoreGraphics/CGAffineTransform.h:7,
                 from
C:/Developer/Mingw-NG/GNUstep/System/Library/Headers/CoreGraphics/CoreGraphics.h:5,
                 from ../Headers/UIKit/UIApplication.h:9,
                 from UIApplication.m:1:

So it seems you are providing a CGFloat definition inside
Foundation/NSObjCRuntime.h,
wouldn't be possible to add a new module CoreGraphics and to put
definition inside
CGBase.h ? Actually what I have developped looks like opal except my
implementation is more complete.
I don't think CGFloat definitions belongs to NSObjCRuntime and I might be
wrong but I suppose CG means
CoreGraphics so what do you think of my proposal ?