Jørgen Tjernø
If you #define NO_SDL_GLEXT before including SDL_opengl.h, it still includes the platform-provided glext.h. The comments indicate that this define is intended to be used when you provide your own glext.h (quote from SDL_opengl.h: "Define this if you have your own version of glext.h and want to disable the version included in SDL_opengl.h.")
This is a problem because glext.h depends on the contents of gl.h, and it's practical to let SDL_opengl.h pick the right #include for gl.h for our platform.
The visibility attribute warnings in Haiku gl.h can be fixed by editing gl.h and changing the line:
#elif defined(__GNUC__) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
to
#elif (defined(__GNUC__) && __GNUC__ >= 4) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
as described in: http://dev.haiku-os.org/ticket/8882
q66
The SDL_opengl.h header contains this:
#ifdef __FreeBSD__ /* !!! FIXME: temp compiler warning fix... */
#define NO_SDL_GLEXT 1
#endif
However, I can't seem to find what kind of compiler warning it was and it makes it unusable to use on FreeBSD. If I comment out these lines on my machine, everything works fine - I use FreeBSD 9-STABLE (x86_64, gcc and clang both, the same in a x86 chroot). All I could find is that this was causing an error on FreeBSD 8, but I can't test that on my machine (maybe if I set up some FreeBSD 8 chroot).
I set up a 8.2 chroot and investigated the problem. Apparently this issue was fixed in Mesa 7.6 (and in Git, June 4 2009, but it didn't get into 7.5). By the time those lines were added, FreeBSD contained the libGL port version 7.4.4, which suffered from the issue, but on April 2012 the version was updated to 7.6, which is available for FreeBSD 8 and FreeBSD 9 alike, which means those three lines should be safe to remove (it'll work fine for everyone with sufficiently up to date ports).
Daniele Forghieri 2009-10-12 02:57:03 PDT
Patch to use stdlib.h with Open Watcom
Open Watcom 1.8 has <stdlib.h> so instead of patch the single part when stdlib
features are used we use directly the include file as with GCC.
Unfortunately the audio and cdrom systems do not build at all, and if you
disable those, SDL still fails to link with these errors:
Undefined symbols:
"_OBJC_IVAR_$_NSScreen._frame", referenced from:
-[NSScreen(NSScreenAccess) setFrame:] in SDL_cocoamodes.o
"_KLGetKeyboardLayoutProperty", referenced from:
_UpdateKeymap in SDL_cocoakeyboard.o
_UpdateKeymap in SDL_cocoakeyboard.o
"_KLGetCurrentKeyboardLayout", referenced from:
_UpdateKeymap in SDL_cocoakeyboard.o
ld: symbol(s) not found
When switching to "UNIX-style paths" as needed for the new includes,
including <GL/gl.h> and <GL/glu.h> doesn't work anymore on Mac OS...
The two headers are really located in the OpenGL SDK 1.2 CFM like this:
OpenGL:Headers:gl.h
OpenGL:Headers:glu.h
There are also some compat copies, that *used* to work with Mac paths:
OpenGL:Headers:GL/gl.h
OpenGL:Headers:GL/glu.h
The easiest fix is to make SDL_opengl.h include the proper header names,
by adding a special case for the MACOS platform in addition to the MACOSX
