-/*
- * Inline is not supported in < C90, however some compilers
- * like gcc and clang might have an inline attribute we can
- * use if present.
- */
-#ifdef __STDC_VERSION__
-# if __STDC_VERSION__ < 199901L
-# if defined(__GNUC__) || defined (__CLANG__)
-# if __GNUC__ < 2
-# define GMQCC_INLINE
-# else
-# define GMQCC_INLINE __attribute__ ((always_inline))
-# endif
-# else
-# define GMQCC_INLINE
-# endif
-# else
-# define GMQCC_INLINE inline
-# endif
-#else
-# define GMQCC_INLINE
-#endif /* !__STDC_VERSION__ */
-
-/*
- * noreturn is present in GCC and clang
- * it's required for _ast_node_destory otherwise -Wmissing-noreturn
- * in clang complains about there being no return since abort() is
- * called.
- */
-#if (defined(__GNUC__) && __GNUC__ >= 2) || defined(__CLANG__)
-# define GMQCC_NORETURN __attribute__ ((noreturn))
-#else
-# define GMQCC_NORETURN
+#define GMQCC_BYTE_ORDER_LITTLE 1234
+#define GMQCC_BYTE_ORDER_BIG 4321
+
+#if defined (__GNUC__) || defined (__GNU_LIBRARY__)
+# if defined (__FreeBSD__) || defined (__OpenBSD__)
+# include <sys/endian.h>
+# elif defined (BSD) && (BSD >= 199103) || defined (__DJGPP__) || defined (__CYGWIN32__)
+# include <machine/endian.h>
+# elif defined (__APPLE__)
+# if defined (__BIG_ENDIAN__) && !defined(BIG_ENDIAN)
+# define BIG_ENDIAN
+# elif defined (__LITTLE_ENDIAN__) && !defined (LITTLE_ENDIAN)
+# define LITTLE_ENDIAN
+# endif /*! defined (__BIG_ENDIAN__) && !defined(BIG_ENDIAN) */
+# elif !defined (__MINGW32__)
+# include <endian.h>
+# if !defined (__BEOS__)
+# include <byteswap.h>
+# endif /*! !definde (__BEOS__) */
+# endif /*! defined (__FreeBSD__) || defined (__OpenBSD__) */
+#endif /*! defined (__GNUC__) || defined (__GNU_LIBRARY__) */
+#if !defined(PLATFORM_BYTE_ORDER)
+# if defined (LITTLE_ENDIAN) || defined (BIG_ENDIAN)
+# if defined (LITTLE_ENDIAN) && !defined(BIG_ENDIAN)
+# define PLATFORM_BYTE_ORDER GMQCC_BYTE_ORDER_LITTLE
+# elif !defined (LITTLE_ENDIAN) && defined (BIG_ENDIAN)
+# define PLATFORM_BYTE_ORDER GMQCC_BYTE_ORDER_BIG
+# elif defined (BYTE_ORDER) && (BYTE_ORDER == LITTLE_ENDIAN)
+# define PLATFORM_BYTE_ORDER GMQCC_BYTE_ORDER_LITTLE
+# elif defined (BYTE_ORDER) && (BYTE_ORDER == BIG_ENDIAN)
+# define PLATFORM_BYTE_ORDER GMQCC_BYTE_ORDER_BIG
+# endif /*! defined (LITTLE_ENDIAN) && !defined(BIG_ENDIAN) */
+# elif defined (_LITTLE_ENDIAN) || defined (_BIG_ENDIAN)
+# if defined (_LITTLE_ENDIAN) && !defined(_BIG_ENDIAN)
+# define PLATFORM_BYTE_ORDER GMQCC_BYTE_ORDER_LITTLE
+# elif !defined (_LITTLE_ENDIAN) && defined (_BIG_ENDIAN)
+# define PLATFORM_BYTE_ORDER GMQCC_BYTE_ORDER_BIG
+# elif defined (_BYTE_ORDER) && (_BYTE_ORDER == _LITTLE_ENDIAN)
+# define PLATFORM_BYTE_ORDER GMQCC_BYTE_ORDER_LITTLE
+# elif defined (_BYTE_ORDER) && (_BYTE_ORDER == _BIG_ENDIAN)
+# define PLATFORM_BYTE_ORDER GMQCC_BYTE_ORDER_BIG
+# endif /*! defined (_LITTLE_ENDIAN) && !defined(_BIG_ENDIAN) */
+# elif defined (__LITTLE_ENDIAN__) || defined (__BIG_ENDIAN__)
+# if defined (__LITTLE_ENDIAN__) && !defined (__BIG_ENDIAN__)
+# define PLATFORM_BYTE_ORDER GMQCC_BYTE_ORDER_LITTLE
+# elif !defined (__LITTLE_ENDIAN__) && defined (__BIG_ENDIAN__)
+# define PLATFORM_BYTE_ORDER GMQCC_BYTE_ORDER_BIG
+# elif defined (__BYTE_ORDER__) && (__BYTE_ORDER__ == __LITTLE_ENDIAN__)
+# define PLATFORM_BYTE_ORDER GMQCC_BYTE_ORDER_LITTLE
+# elif defined (__BYTE_ORDER__) && (__BYTE_ORDER__ == __BIG_ENDIAN__)
+# define PLATFORM_BYTE_ORDER GMQCC_BYTE_ORDER_BIG
+# endif /*! defined (__LITTLE_ENDIAN__) && !defined (__BIG_ENDIAN__) */
+# endif /*! defined(LITTLE_ENDIAN) || defined (BIG_ENDIAN) */
+#endif /*! !defined(PLATFORM_BYTE_ORDER) */
+#if !defined (PLATFORM_BYTE_ORDER)
+# if defined (__alpha__) || defined (__alpha) || defined (i386) || \
+ defined (__i386__) || defined (_M_I86) || defined (_M_IX86) || \
+ defined (__OS2__) || defined (sun386) || defined (__TURBOC__) || \
+ defined (vax) || defined (vms) || defined (VMS) || \
+ defined (__VMS) || defined (__x86_64__) || defined (_M_IA64) || \
+ defined (_M_X64) || defined (__i386) || defined (__x86_64)
+# define PLATFORM_BYTE_ORDER GMQCC_BYTE_ORDER_LITTLE
+# elif defined (AMIGA) || defined (applec) || defined (__AS400__) || \
+ defined (_CRAY) || defined (__hppa) || defined (__hp9000) || \
+ defined (ibm370) || defined (mc68000) || defined (m68k) || \
+ defined (__MRC__) || defined (__MVS__) || defined (__MWERKS__) || \
+ defined (sparc) || defined (__sparc) || defined (SYMANTEC_C) || \
+ defined (__TANDEM) || defined (THINK_C) || defined (__VMCMS__) || \
+ defined (__PPC__) || defined (__PPC) || defined (PPC)
+# define PLATFORM_BYTE_ORDER GMQCC_BYTE_ORDER_BIG
+# else
+# define PLATFORM_BYTE_ORDER -1
+# endif