+ Handle Darwin gcc universal compilation. Don't do this in an Apple-
+ specific case since no sane compiler should be defining either
+ __BIG_ENDIAN__ or __LITTLE_ENDIAN__ unless it really is generating
+ code that will be hosted on a machine with the appropriate endianness.
+ If a compiler defines neither, assume the user or configure set
+ WORDS_BIGENDIAN appropriately.
+ */
+#if defined(__BIG_ENDIAN__)
+# undef WORDS_BIGENDIAN
+# define WORDS_BIGENDIAN 1
+#elif defined(__LITTLE_ENDIAN__)
+# undef WORDS_BIGENDIAN
+#elif defined(__WXMAC__) && !defined(WORDS_BIGENDIAN)
+/* According to Stefan even ancient Mac compilers defined __BIG_ENDIAN__ */
+# warning "Compiling wxMac with probably wrong endianness"
+#endif
+/* also the 32/64 bit universal builds must be handled accordingly */
+#ifdef __DARWIN__
+# ifdef __LP64__
+# undef SIZEOF_VOID_P
+# undef SIZEOF_LONG
+# undef SIZEOF_SIZE_T
+# define SIZEOF_VOID_P 8
+# define SIZEOF_LONG 8
+# define SIZEOF_SIZE_T 8
+# else
+# undef SIZEOF_VOID_P
+# undef SIZEOF_LONG
+# undef SIZEOF_SIZE_T
+# define SIZEOF_VOID_P 4
+# define SIZEOF_LONG 4
+# define SIZEOF_SIZE_T 4
+# endif
+#endif
+
+/*
+ Define various OS X symbols before including wx/chkconf.h which uses them.
+
+ __WXOSX_MAC__ means Mac OS X, non embedded
+ __WXOSX_IPHONE__ means OS X iPhone
+ */
+
+/*
+ Normally all of __WXOSX_XXX__, __WXOSX__ and __WXMAC__ are defined by
+ configure but ensure that we also define them if configure was not used for
+ whatever reason.
+
+ The primary symbol remains __WXOSX_XXX__ one, __WXOSX__ exists to allow
+ checking for any OS X port (Carbon and Cocoa) and __WXMAC__ is an old name
+ for it.
+ */
+#if defined(__WXOSX_CARBON__) || defined(__WXOSX_COCOA__) || defined(__WXOSX_IPHONE__) \
+|| (defined(__DARWIN__) && !wxUSE_GUI)
+# ifndef __WXOSX__
+# define __WXOSX__ 1
+# endif
+# ifndef __WXMAC__
+# define __WXMAC__ 1
+# endif
+#endif
+
+#ifdef __WXOSX__
+/* setup precise defines according to sdk used */
+# include <TargetConditionals.h>
+# if defined(__WXOSX_IPHONE__)
+# if !( defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE )
+# error "incorrect SDK for an iPhone build"
+# endif
+# else
+# if wxUSE_GUI && !(defined(__WXOSX_CARBON__) || defined(__WXOSX_COCOA__))
+# error "one of __WXOSX_IPHONE__, __WXOSX_CARBON__ or __WXOSX_COCOA__ must be defined for the GUI build"
+# endif
+# if !( defined(TARGET_OS_MAC) && TARGET_OS_MAC )
+# error "incorrect SDK for a Mac OS X build"
+# endif
+# define __WXOSX_MAC__ 1
+# endif
+#endif
+
+#ifdef __WXOSX_MAC__