Re: [Plib-users] Building Plib on Mac OSX (Darwin)

[Reed H. <re...@ze...>]

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Jon, have you been working on plib on OSX? How much have you got 
working? I have working for me everything except
fnt, and sl and js (need some bigger porting) and haven't looked at net 
at all.   Basically the tux ssg example,
the simple and complex pui examples (but not widget_list). Segfault 
somewhere in puFilePicker::setSize().
Is any OSX stuff in CVS yet? I was going to put together a patch, but 
would like to know what's there
already.   Would it be possible for me to check out the CVS tree, to 
find a recent tarball somewhere?

On Saturday, December 29, 2001, at 06:03 PM, Beegee wrote:

> I resolved the __objcInit error by linking against libobjc, from 
> /usr/lib. There was some discussion about this on the ProjectBuilder 
> list, but I don't have the thread handy.

yup, that works fine.  I think some of the OpenGL library is in 
Objective-C ("cocoa")

>
> Additionally, there was a bug in 10.1 I believe that caused a crash if 
> you called aglGetCurrentContext() before you created a context. That 
> led me to just have glIsValidContext() always return true on OS X.  
> Sloppy I know...
>

Yeah, most of Carbon AGL is "Unsupported" according to the on-line docs, 
and aglGetCurrentContext() doesn't work,
and needs to be removed.  There are equivalents in the Objective-C 
("Cocoa") OpenGL interfaces, that I will try out.

 > Also, I've made basically the exact same changes that you listed 
except that I kept 'macintosh' and 'MACOSX' as separate
 > targets because of things like <OpenGL/GL.h> vs <GL/GL.h>.

What macros are defined on MacOSX? I know __APPLE__ and __MACH__ are, 
are there any that just mean "you're on
MacOSX" ? ("__MACOSX__" or something?).   I think stuff like:

#if defined(__APPLE__) && defined(__MACH__)	// Mac OSX
#include <OpenGL/gl.h>
#else
#include <GL/gl.h>
#endif

would work pretty fine  (or probably just #ifdef __MACH__). Do you guys 
agree? If so, I'll make up the patch.

I'm still not sure how to get the correct linker flags into the 
Makefiles via autoconf (will look into it sometime)
but this is what's needed in the Makefiles for OSX:

There should be no X11 libraries at all ("-lX11 -lXi -lXext -lXmu").  
This is not a problem in the libraries, because
the X libraries aren't actually linked, but I had to remove those flags 
when building the example programs.

These flags should be added in these makefiles:

ssg/Makefile:	LIBS += -framework OpenGL
pui/Makefile:	LIBS += -framework GLUT
All of the examples I tried: 	LIBS += -lobjc -framework OpenGL  
- -framework GLUT

Let me know about CVS, patching, and if anyone knows about making 
autoconf work.


rh

- --

Reed Hedges
re...@ze...
http://zerohour.net/~reed

Virtual Object System -- Internet Virtual Reality:
http://www.interreality.org

The owls are not what they seem.


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