One of the VxWorks header files defines _BIG_ENDIAN, which is also defined in rs6000.h,
causing a spurious redefinition error.  We could either remove the #define in the header
file with fixincs, or remove the predefine from the specs; I chose this approach because
it still works with unfixed VxWorks header files, which may happen since default VxWorks
makefiles include the -nostdinc flag.


diff -c3prN /gcc.orig/gcc/gcc/config/rs6000/vxppc.h /gcc.dev/gcc/gcc/config/rs6000/vxppc.h
*** /gcc.orig/gcc/gcc/config/rs6000/vxppc.h	Mon May 17 02:30:56 1999
--- /gcc.dev/gcc/gcc/config/rs6000/vxppc.h	Mon Jan 29 23:41:20 2001
*************** Boston, MA 02111-1307, USA.  */
*** 71,73 ****
--- 71,83 ----
  /* We use stabs-in-elf for debugging */
  #undef PREFERRED_DEBUGGING_TYPE
  #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
+ 
+ /*   The default definitions of these duplicate an endian define
+     that WRS include in their system header files so remove it  */
+ 
+ #undef CPP_ENDIAN_BIG_SPEC
+ #define CPP_ENDIAN_BIG_SPEC "-D__BIG_ENDIAN__ -Amachine(bigendian)"
+ 
+ #undef CPP_ENDIAN_LITTLE_SPEC
+ #define CPP_ENDIAN_LITTLE_SPEC "-D__LITTLE_ENDIAN__ -Amachine(littleendian)"
+