For compilers other than MSVC and GCC, assume inline has the C99 semantics.
#ifndef INLINE
# if defined(_MSC_VER)
# define INLINE extern __inline
#ifndef INLINE
# if defined(_MSC_VER)
# define INLINE extern __inline
-# elif defined(__HUGS__)
-# define INLINE INLINE_ONLY
-# else
+# elif defined(__GNUC__)
# define INLINE extern inline
# define INLINE extern inline
+# else
+# define INLINE inline