Index: trunk/Ohana/src/libfits/include/gfitsio.h
===================================================================
--- trunk/Ohana/src/libfits/include/gfitsio.h	(revision 27435)
+++ trunk/Ohana/src/libfits/include/gfitsio.h	(revision 28241)
@@ -7,23 +7,9 @@
 # define GFITSIO
 
-/* also defined in libautocode/def/common.h */
-/* what about lin64 ?? - 'linux' might be defined automatically by linux */
 # ifndef BYTE_SWAP
-# ifdef linux
-# define BYTE_SWAP
+# ifndef NOT_BYTE_SWAP
+# error "neither BYTE_SWAP not NOT_BYTE_SWAP is set"
 # endif
-
-# ifdef sid
-# define BYTE_SWAP
 # endif
-
-# ifdef darwin_x86
-# define BYTE_SWAP
-# endif
-
-# ifdef dec
-# define BYTE_SWAP
-# endif
-# endif /* BYTE_SWAP */
 
 # ifndef NEWLINE