Mac OS X Framework support

[afb]

To support wxMac, we need to add support for system frameworks...
(Extension *.bundle was added by mistake, should be *.framework ?)

These are added like: /System/Library/Frameworks/OpenGL.framework,
which would result in the following compiler flags (for GCC/G++/GDC):

• -F/System/Library/Frameworks
• -framework OpenGL

The first GCC param is optional, since /System/Library/Frameworks is
already in the default search path (compare with -I/usr/lib for UNIX)
Default framework search path:

• ~/Library/Frameworks
• /Library/Frameworks (comparable with /usr/local)
• /Network/Library/Frameworks
• /System/Library/Frameworks (comparable with /usr)

Then one needs to modify the sources as well, to change <GL/gl.h> into
<OpenGL/gl.h> but that can be made conditionally with #ifdefs if wanted.
(An include like <Framework/header.h> tells the Apple GCC compiler to
search in the current framework path, and include a file from "Headers")

Code

#include <OpenGL/gl.h>
// looks in /System/Library/Frameworks/OpenGL.framework/Headers/gl.h
#include <GLUT/glut.h>
// looks in /System/Library/Frameworks/GLUT.framework/Headers/glut.h

There are no GL directories in /usr, except for the non-Mac files for X11.app.
(i.e. wxGTK can link with /usr/X11R6/include/GL/gl.h, but wxMac should not)

Non-system libraries might be frameworks, or they might be dynamic libraries.
(e.g. SDL is available in both variants, both of SDL.framework / libSDL.dylib)

• /Library/Frameworks/SDL.framework/SDL
• /usr/local/lib/libSDL.dylib

Note that both of these carry the same code, just as our Code::Blocks can exist
both in /usr/local/bin/codeblocks or in /Developer/Applications/CodeBlocks.app...


So, how do we add these to Code::Blocks ? I'm thinking they should be new fields...

Code

        project.AddFramework(_T("OpenGL"));
        project.AddFramework(_T("GLUT"));

And the compiler code can then use that field for both header searching and linking ?

This will probably be a 1.5 feature, though, since 1.0 will only have the regular libs.
(i.e. until there is builtin support, one adds the Frameworks as "extra linker flags"...)