1 /**
2 * Name:        wx/platform.h
3 * Purpose:     define the OS and compiler identification macros
4 * Author:      Vadim Zeitlin
5 * Modified by:
6 * Created:     29.10.01 (extracted from wx/defs.h)
7 * RCS-ID:      $Id: platform.h 63300 2010-01-28 21:36:09Z MW $
8 * Copyright:   (c) 1997-2001 Vadim Zeitlin
9 * Licence:     wxWindows licence
10 */
11 
12 /* THIS IS A C FILE, DON'T USE C++ FEATURES (IN PARTICULAR COMMENTS) IN IT */
13 
14 #ifndef _WX_PLATFORM_H_
15 #define _WX_PLATFORM_H_
16 
17 
18 /*
19     Codewarrior doesn't define any Windows symbols until some headers
20     are included
21 */
22 #ifdef __MWERKS__
23 #    include <stddef.h>
24 #endif
25 
26 /*
27     WXMAC variants
28     __WXMAC_CLASSIC__ means ppc non-carbon builds, __WXMAC_CARBON__ means
29     carbon API available (mach or cfm builds) , __WXMAC_OSX__ means mach-o
30     builds, running under 10.2 + only
31 */
32 #ifdef __WXMAC__
33 #    if defined(__MACH__)
34 #        define __WXMAC_OSX__
35 #        define __WXMAC_CARBON__
36 #        include <AvailabilityMacros.h>
37 #        ifndef MAC_OS_X_VERSION_10_4
38 #           define MAC_OS_X_VERSION_10_4 1040
39 #        endif
40 #        ifndef MAC_OS_X_VERSION_10_5
41 #           define MAC_OS_X_VERSION_10_5 1050
42 #        endif
43 #        ifdef __WXMAC_XCODE__
44 #            include <unistd.h>
45 #            include "wx/mac/carbon/config_xcode.h"
46 #        endif
47 #    else
48 #        if TARGET_CARBON
49 #            define __WXMAC_CARBON__
50 #        else
51 #            define __WXMAC_CLASSIC__
52 #        endif
53 #    endif
54 #endif
55 
56 /*
57     __WXOSX__ is a common define to wxMac (Carbon) and wxCocoa ports under OS X.
58  */
59 #if defined(__WXMAC_OSX__) || defined(__WXCOCOA__)
60 #   define __WXOSX__
61 #endif
62 
63 /*
64    first define Windows symbols if they're not defined on the command line: we
65    can autodetect everything we need if _WIN32 is defined
66  */
67 #if defined(__CYGWIN__) && defined(__WINDOWS__)
68 #    ifndef __WXMSW__
69 #        define __WXMSW__
70 #    endif
71 
72 #    ifndef _WIN32
73 #        define _WIN32
74 #    endif
75 
76 #    ifndef WIN32
77 #        define WIN32
78 #    endif
79 #endif
80 
81 #if defined(__PALMOS__)
82 #   if __PALMOS__ == 0x06000000
83 #       define __WXPALMOS6__
84 #   endif
85 #   if __PALMOS__ == 0x05000000
86 #       define __WXPALMOS5__
87 #   endif
88 #   ifndef __WXPALMOS__
89 #       define __WXPALMOS__
90 #   endif
91 #   ifdef __WXMSW__
92 #       undef __WXMSW__
93 #   endif
94 #   ifdef __WINDOWS__
95 #       undef __WINDOWS__
96 #   endif
97 #   ifdef __WIN32__
98 #       undef __WIN32__
99 #   endif
100 #   ifdef WIN32
101 #       undef WIN32
102 #   endif
103 #   ifdef _WIN32
104 #       undef _WIN32
105 #   endif
106 #endif
107 
108 #if defined(_WIN64)
109 #    ifndef _WIN32
110         /*
111             a lot of code (mistakenly) uses #ifdef _WIN32 to either test for
112             Windows or to test for !__WIN16__, so we must define _WIN32 for
113             Win64 as well to ensure that the existing code continues to work.
114          */
115 #       define _WIN32
116 #   endif /* !_WIN32 */
117 
118 #   ifndef __WIN64__
119 #       define __WIN64__
120 #   endif /* !__WIN64__ */
121 #endif /* _WIN64 */
122 
123 #if (defined(_WIN32) || defined(WIN32) || defined(__NT__) || defined(__WXWINCE__)) \
124     && !defined(__WXMOTIF__) && !defined(__WXGTK__) && !defined(__WXX11__)
125 #    ifndef __WXMSW__
126 #        define __WXMSW__
127 #    endif
128 
129 #    ifndef __WIN32__
130 #        define __WIN32__
131 #    endif
132 #endif /* Win32 */
133 
134 #if defined(__WXMSW__) || defined(__WIN32__)
135 #   if !defined(__WINDOWS__)
136 #       define __WINDOWS__
137 #   endif
138 #endif
139 
140 /* detect MS SmartPhone */
141 #if defined( WIN32_PLATFORM_WFSP )
142 #   ifndef __SMARTPHONE__
143 #       define __SMARTPHONE__
144 #   endif
145 #   ifndef __WXWINCE__
146 #       define __WXWINCE__
147 #   endif
148 #endif
149 
150 /* detect PocketPC */
151 #if defined( WIN32_PLATFORM_PSPC )
152 #   ifndef __POCKETPC__
153 #       define __POCKETPC__
154 #   endif
155 #   ifndef __WXWINCE__
156 #       define __WXWINCE__
157 #   endif
158 #endif
159 
160 /* detect Standard WinCE SDK */
161 #if defined( WCE_PLATFORM_STANDARDSDK )
162 #   ifndef __WINCE_STANDARDSDK__
163 #       define __WINCE_STANDARDSDK__
164 #   endif
165 #   ifndef __WXWINCE__
166 #       define __WXWINCE__
167 #   endif
168 #endif
169 
170 #if defined(_WIN32_WCE) && !defined(WIN32_PLATFORM_WFSP) && !defined(WIN32_PLATFORM_PSPC)
171 #   if (_WIN32_WCE >= 400)
172 #       ifndef __WINCE_NET__
173 #           define __WINCE_NET__
174 #       endif
175 #   elif (_WIN32_WCE >= 200)
176 #       ifndef __HANDHELDPC__
177 #           define __HANDHELDPC__
178 #       endif
179 #   endif
180 #   ifndef __WXWINCE__
181 #       define __WXWINCE__
182 #   endif
183 #endif
184 
185 #if defined(__POCKETPC__) || defined(__SMARTPHONE__) || defined(__WXGPE__)
186 #   define __WXHANDHELD__
187 #endif
188 
189 /*
190    Include wx/setup.h for the Unix platform defines generated by configure and
191    the library compilation options
192 
193    Note that it must be included before defining hardware symbols below as they
194    could be already defined by configure
195  */
196 #include "wx/setup.h"
197 
198 /*
199    Hardware platform detection.
200 
201    VC++ defines _M_xxx symbols.
202  */
203 #if defined(_M_IX86) || defined(i386) || defined(__i386) || defined(__i386__)
204     #ifndef __INTEL__
205         #define __INTEL__
206     #endif
207 #endif /* x86 */
208 
209 #if defined(_M_IA64)
210     #ifndef __IA64__
211         #define __IA64__
212     #endif
213 #endif /* ia64 */
214 
215 #if defined(_M_MPPC) || defined(__PPC__) || defined(__ppc__)
216     #ifndef __POWERPC__
217         #define __POWERPC__
218     #endif
219 #endif /* alpha */
220 
221 #if defined(_M_ALPHA) || defined(__AXP__)
222     #ifndef __ALPHA__
223         #define __ALPHA__
224     #endif
225 #endif /* alpha */
226 
227 
228 /*
229    adjust the Unicode setting: wxUSE_UNICODE should be defined as 0 or 1
230    and is used by wxWidgets, _UNICODE and/or UNICODE may be defined or used by
231    the system headers so bring these settings in sync
232  */
233 
234 /* set wxUSE_UNICODE to 1 if UNICODE or _UNICODE is defined */
235 #if defined(_UNICODE) || defined(UNICODE)
236 #   undef wxUSE_UNICODE
237 #   define wxUSE_UNICODE 1
238 #else /* !UNICODE */
239 #   ifndef wxUSE_UNICODE
240 #       define wxUSE_UNICODE 0
241 #   endif
242 #endif /* UNICODE/!UNICODE */
243 
244 /* and vice versa: define UNICODE and _UNICODE if wxUSE_UNICODE is 1 */
245 #if wxUSE_UNICODE
246 #   ifndef _UNICODE
247 #       define _UNICODE
248 #   endif
249 #   ifndef UNICODE
250 #       define UNICODE
251 #   endif
252 #endif /* wxUSE_UNICODE */
253 
254 #if defined( __MWERKS__ ) && !defined(__INTEL__)
255 /* otherwise MSL headers bring in WIN32 dependant APIs */
256 #undef UNICODE
257 #endif
258 
259 /*
260    Notice that Turbo Explorer (BCC 5.82) is available for free at
261    http://www.turboexplorer.com/downloads, you can get it if you have trouble
262    compiling wxWidgets with your current Borland compiler.
263 */
264 #if defined(__BORLANDC__) && (__BORLANDC__ < 0x540)
265 #   error "wxWidgets requires a newer version of Borland, we recommend upgrading to 5.82 (Turbo Explorer). You may at your own risk remove this line and try building but be prepared to get build errors."
266 #endif /* __BORLANDC__ */
267 
268 #if defined(__BORLANDC__) && (__BORLANDC__ < 0x582) && (__BORLANDC__ > 0x559)
269 #   ifndef _USE_OLD_RW_STL
270 #       error "wxWidgets is incompatible with default Borland C++ 5.6 STL library, please add -D_USE_OLD_RW_STL to your bcc32.cfg to use RogueWave STL implementation."
271 #   endif
272 #endif /* __BORLANDC__ */
273 
274 /*
275    This macro can be used to test the Open Watcom version.
276 */
277 #ifndef __WATCOMC__
278 #   define wxWATCOM_VERSION(major,minor) 0
279 #   define wxCHECK_WATCOM_VERSION(major,minor) 0
280 #   define wxONLY_WATCOM_EARLIER_THAN(major,minor) 0
281 #elif defined(__WATCOMC__) && __WATCOMC__ < 1200
282 #   error "Only Open Watcom is supported in this release"
283 #else
284 #   define wxWATCOM_VERSION(major,minor) ( major * 100 + minor * 10 + 1100 )
285 #   define wxCHECK_WATCOM_VERSION(major,minor) ( __WATCOMC__ >= wxWATCOM_VERSION(major,minor) )
286 #   define wxONLY_WATCOM_EARLIER_THAN(major,minor) ( __WATCOMC__ < wxWATCOM_VERSION(major,minor) )
287 #endif
288 
289 /*
290    check the consistency of the settings in setup.h: note that this must be
291    done after setting wxUSE_UNICODE correctly as it is used in wx/chkconf.h
292  */
293 #include "wx/chkconf.h"
294 
295 
296 /*
297    some compilers don't support iostream.h any longer, while some of theme
298    are not updated with <iostream> yet, so override the users setting here
299    in such case.
300  */
301 #if defined(_MSC_VER) && (_MSC_VER >= 1310)
302 #    undef wxUSE_IOSTREAMH
303 #    define wxUSE_IOSTREAMH 0
304 #elif defined(__DMC__) || defined(__WATCOMC__)
305 #    undef wxUSE_IOSTREAMH
306 #    define wxUSE_IOSTREAMH 1
307 #elif defined(__MINGW32__)
308 #    undef wxUSE_IOSTREAMH
309 #    define wxUSE_IOSTREAMH 0
310 #endif /* compilers with/without iostream.h */
311 
312 /*
313    old C++ headers (like <iostream.h>) declare classes in the global namespace
314    while the new, standard ones (like <iostream>) do it in std:: namespace,
315    unless it's an old gcc version.
316 
317    using this macro allows constuctions like "wxSTD iostream" to work in
318    either case
319  */
320 #if !wxUSE_IOSTREAMH && (!defined(__GNUC__) || ( __GNUC__ > 2 ) || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95))
321 #    define wxSTD std::
322 #else
323 #    define wxSTD
324 #endif
325 
326 /*
327    OS: first of all, test for MS-DOS platform. We must do this before testing
328        for Unix, because DJGPP compiler defines __unix__ under MS-DOS
329  */
330 #if defined(__GO32__) || defined(__DJGPP__) || defined(__DOS__)
331 #    ifndef __DOS__
332 #        define __DOS__
333 #    endif
334     /* size_t is the same as unsigned int for Watcom 11 compiler, */
335     /* so define it if it hadn't been done by configure yet */
336 #    if !defined(wxSIZE_T_IS_UINT) && !defined(wxSIZE_T_IS_ULONG)
337 #        ifdef __WATCOMC__
338 #            define wxSIZE_T_IS_UINT
339 #        endif
340 #        ifdef __DJGPP__
341 #            define wxSIZE_T_IS_ULONG
342 #        endif
343 #    endif
344 
345 /*
346    OS: then test for generic Unix defines, then for particular flavours and
347        finally for Unix-like systems
348        Mac OS X matches this case (__MACH__), prior Mac OS do not.
349  */
350 #elif defined(__UNIX__) || defined(__unix) || defined(__unix__) || \
351       defined(____SVR4____) || defined(__LINUX__) || defined(__sgi) || \
352       defined(__hpux) || defined(sun) || defined(__SUN__) || defined(_AIX) || \
353       defined(__EMX__) || defined(__VMS) || defined(__BEOS__) || defined(__MACH__)
354 
355 #    define __UNIX_LIKE__
356 
357     /* Helps SGI compilation, apparently */
358 #    ifdef __SGI__
359 #        ifdef __GNUG__
360 #            define __need_wchar_t
361 #        else /* !gcc */
362             /*
363                Note I use the term __SGI_CC__ for both cc and CC, its not a good
364                idea to mix gcc and cc/CC, the name mangling is different
365              */
366 #            define __SGI_CC__
367 #        endif /* gcc/!gcc */
368 
369         /* system headers use this symbol and not __cplusplus in some places */
370 #       ifndef _LANGUAGE_C_PLUS_PLUS
371 #           define _LANGUAGE_C_PLUS_PLUS
372 #       endif
373 #    endif  /* SGI */
374 
375 #    if defined(sun) || defined(__SUN__)
376 #        ifndef __GNUG__
377 #            ifndef __SUNCC__
378 #                define __SUNCC__
379 #            endif /* Sun CC */
380 #        endif
381 #    endif /* Sun */
382 
383 #    ifdef __EMX__
384 #        define OS2EMX_PLAIN_CHAR
385 #    endif
386 
387     /* define __HPUX__ for HP-UX where standard macro is __hpux */
388 #    if defined(__hpux) && !defined(__HPUX__)
389 #        define __HPUX__
390 #    endif /* HP-UX */
391 
392 #    if defined(__CYGWIN__) || defined(__WINE__)
393 #        if !defined(wxSIZE_T_IS_UINT)
394 #            define wxSIZE_T_IS_UINT
395 #        endif
396 #    endif
397 
398     /*  All of these should already be defined by including configure-
399         generated setup.h but we wish to support Xcode compilation without
400         requiring the user to define these himself.
401      */
402 #    if defined(__APPLE__) && defined(__MACH__)
403 #        ifndef __UNIX__
404 #            define __UNIX__ 1
405 #        endif
406 #        ifndef __BSD__
407 #            define __BSD__ 1
408 #        endif
409         /*  __DARWIN__ is our own define to mean OS X or pure Darwin */
410 #        ifndef __DARWIN__
411 #            define __DARWIN__ 1
412 #        endif
413         /*  NOTE: TARGET_CARBON is actually a 0/1 and must be 1 for OS X */
414 #        ifndef TARGET_CARBON
415 #            define TARGET_CARBON 1
416 #        endif
417         /* OS X uses unsigned long size_t for both ILP32 and LP64 modes. */
418 #        if !defined(wxSIZE_T_IS_UINT) && !defined(wxSIZE_T_IS_ULONG)
419 #            define wxSIZE_T_IS_ULONG
420 #        endif
421 #    endif
422 
423 /*
424    OS: Classic Mac OS
425  */
426 #elif defined(applec) || \
427       defined(THINK_C) || \
428       (defined(__MWERKS__) && !defined(__INTEL__))
429       /* MacOS */
430 #    if !defined(wxSIZE_T_IS_UINT) && !defined(wxSIZE_T_IS_ULONG)
431 #        define wxSIZE_T_IS_ULONG
432 #    endif
433 
434 /*
435    OS: OS/2
436  */
437 #elif defined(__OS2__)
438 
439     /* wxOS2 vs. non wxOS2 ports on OS2 platform */
440 #    if !defined(__WXMOTIF__) && !defined(__WXGTK__) && !defined(__WXX11__)
441 #        ifndef __WXPM__
442 #            define __WXPM__
443 #        endif
444 #    endif
445 
446 #    if defined(__IBMCPP__)
447 #        define __VISAGEAVER__ __IBMCPP__
448 #    endif
449 
450     /* Place other OS/2 compiler environment defines here */
451 #    if defined(__VISAGECPP__)
452         /* VisualAge is the only thing that understands _Optlink */
453 #        define LINKAGEMODE _Optlink
454 #    endif
455 #    define wxSIZE_T_IS_UINT
456 
457 /*
458    OS: Palm OS
459  */
460 #elif defined(__PALMOS__)
461 #    ifdef __WIN32__
462 #        error "__WIN32__ should not be defined for PalmOS"
463 #    endif
464 #    ifdef __WINDOWS__
465 #        error "__WINDOWS__ should not be defined for PalmOS"
466 #    endif
467 #    ifdef __WXMSW__
468 #        error "__WXMSW__ should not be defined for PalmOS"
469 #    endif
470 
471 /*
472    OS: Otherwise it must be Windows
473  */
474 #else   /* Windows */
475 #    ifndef __WINDOWS__
476 #        define __WINDOWS__
477 #    endif  /* Windows */
478 
479     /* to be changed for Win64! */
480 #    ifndef __WIN32__
481 #        error "__WIN32__ should be defined for Win32 and Win64, Win16 is not supported"
482 #    endif
483 
484     /*
485        define another standard symbol for Microsoft Visual C++: the standard
486        one (_MSC_VER) is also defined by Metrowerks compiler
487      */
488 #    if defined(_MSC_VER) && !defined(__MWERKS__)
489 #        define __VISUALC__ _MSC_VER
490 #    elif defined(__BCPLUSPLUS__) && !defined(__BORLANDC__)
491 #        define __BORLANDC__
492 #    elif defined(__WATCOMC__)
493 #    elif defined(__SC__)
494 #        define __SYMANTECC__
495 #    endif  /* compiler */
496 
497     /* size_t is the same as unsigned int for all Windows compilers we know, */
498     /* so define it if it hadn't been done by configure yet */
499 #    if !defined(wxSIZE_T_IS_UINT) && !defined(wxSIZE_T_IS_ULONG) && !defined(__WIN64__)
500 #        define wxSIZE_T_IS_UINT
501 #    endif
502 #endif  /* OS */
503 
504 /*
505    if we're on a Unix system but didn't use configure (so that setup.h didn't
506    define __UNIX__), do define __UNIX__ now
507  */
508 #if !defined(__UNIX__) && defined(__UNIX_LIKE__)
509 #    define __UNIX__
510 #endif /* Unix */
511 
512 #if defined(__WXMOTIF__) || defined(__WXX11__)
513 #    define __X__
514 #endif
515 
516 #ifdef __SC__
517 #    ifdef __DMC__
518 #         define __DIGITALMARS__
519 #    else
520 #         define __SYMANTEC__
521 #    endif
522 #endif
523 
524 #ifdef __INTEL_COMPILER
525 #   define __INTELC__
526 #endif
527 
528 /*
529    We get "Large Files (ILP32) not supported in strict ANSI mode." #error
530    from HP-UX standard headers when compiling with g++ without this:
531  */
532 #if defined(__HPUX__) && !defined(__STDC_EXT__)
533 #   define __STDC_EXT__ 1
534 #endif
535 
536 /* Force linking against required libraries under Windows: */
537 #ifdef __WXWINCE__
538 #   include "wx/msw/wince/libraries.h"
539 #elif defined __WINDOWS__
540 #   include "wx/msw/libraries.h"
541 #endif
542 
543 /*
544    This macro can be used to test the gcc version and can be used like this:
545 
546 #    if wxCHECK_GCC_VERSION(3, 1)
547         ... we have gcc 3.1 or later ...
548 #    else
549         ... no gcc at all or gcc < 3.1 ...
550 #    endif
551 */
552 #if defined(__GNUC__) && defined(__GNUC_MINOR__)
553     #define wxCHECK_GCC_VERSION( major, minor ) \
554         ( ( __GNUC__ > (major) ) \
555             || ( __GNUC__ == (major) && __GNUC_MINOR__ >= (minor) ) )
556 #else
557     #define wxCHECK_GCC_VERSION( major, minor ) 0
558 #endif
559 
560 #if defined(__BORLANDC__) || (defined(__GNUC__) && __GNUC__ < 3)
561 #define wxNEEDS_CHARPP
562 #endif
563 
564 /*
565    This macro can be used to check that the version of mingw32 compiler is
566    at least maj.min
567  */
568 #if ( defined( __GNUWIN32__ ) || defined( __MINGW32__ ) || \
569     ( defined( __CYGWIN__ ) && defined( __WINDOWS__ ) ) || \
570       wxCHECK_WATCOM_VERSION(1,0) ) && \
571     !defined(__DOS__) && \
572     !defined(__WXPM__) && \
573     !defined(__WXMOTIF__) && \
574     !defined(__WXGTK__) && \
575     !defined(__WXX11__) && \
576     !defined(__WXPALMOS__)
577 #    include "wx/msw/gccpriv.h"
578 #else
579 #    undef wxCHECK_W32API_VERSION
580 #    define wxCHECK_W32API_VERSION(maj, min) (0)
581 #    undef wxCHECK_MINGW32_VERSION
582 #    define wxCHECK_MINGW32_VERSION(maj, min) (0)
583 #endif
584 
585 #if defined (__WXMSW__)
586 #    if !wxONLY_WATCOM_EARLIER_THAN(1, 8)
587 #        define wxHAVE_RAW_BITMAP
588 #    endif
589 #endif
590 #if defined(__WXGTK20__) || defined(__WXMAC__)
591 #    define wxHAVE_RAW_BITMAP
592 #endif
593 
594 /*
595     Handle Darwin gcc universal compilation.  Don't do this in an Apple-
596     specific case since no sane compiler should be defining either
597     __BIG_ENDIAN__ or __LITTLE_ENDIAN__ unless it really is generating
598     code that will be hosted on a machine with the appropriate endianness.
599     If a compiler defines neither, assume the user or configure set
600     WORDS_BIGENDIAN appropriately.
601  */
602 #if defined(__BIG_ENDIAN__)
603 #    undef WORDS_BIGENDIAN
604 #    define WORDS_BIGENDIAN 1
605 #elif defined(__LITTLE_ENDIAN__)
606 #    undef WORDS_BIGENDIAN
607 #elif defined(__WXMAC__) && !defined(WORDS_BIGENDIAN)
608 /*  According to Stefan even ancient Mac compilers defined __BIG_ENDIAN__ */
609 #    warning "Compiling wxMac with probably wrong endianness"
610 #endif
611 
612 #ifdef __VMS
613 #define XtDisplay XTDISPLAY
614 #ifdef __WXMOTIF__
615 #define XtParent XTPARENT
616 #define XtScreen XTSCREEN
617 #define XtWindow XTWINDOW
618 #endif
619 #endif
620 
621 /* Choose which method we will use for updating menus
622  * - in OnIdle, or when we receive a wxEVT_MENU_OPEN event.
623  * Presently, only Windows and GTK+ support wxEVT_MENU_OPEN.
624  */
625 #ifndef wxUSE_IDLEMENUUPDATES
626 #    if (defined(__WXMSW__) || defined(__WXGTK__)) && !defined(__WXUNIVERSAL__)
627 #        define wxUSE_IDLEMENUUPDATES 0
628 #    else
629 #        define wxUSE_IDLEMENUUPDATES 1
630 #    endif
631 #endif
632 
633 /*
634  * Define symbols that are not yet in
635  * configure or possibly some setup.h files.
636  * They will need to be added.
637  */
638 
639 #ifndef wxUSE_FILECONFIG
640 #    if wxUSE_CONFIG
641 #        define wxUSE_FILECONFIG 1
642 #    else
643 #        define wxUSE_FILECONFIG 0
644 #    endif
645 #endif
646 
647 #ifndef wxUSE_HOTKEY
648 #    define wxUSE_HOTKEY 0
649 #endif
650 
651 #if !defined(wxUSE_WXDIB) && defined(__WXMSW__)
652 #    define wxUSE_WXDIB 1
653 #endif
654 
655 /*
656     We need AvailabilityMacros.h for ifdefing out things that don't exist on
657     OSX 10.2 and lower
658     FIXME:  We need a better way to detect for 10.3 then including a system header
659 */
660 #ifdef __DARWIN__
661     #include <AvailabilityMacros.h>
662 #endif
663 
664 #endif /* _WX_PLATFORM_H_ */
665