Error compiling GNU grep

[Bjorn Ivar Stark]

I get this error message when I try to compile GNU grep on
RS/6000 AIX 3.1
level 3002. Can someone HELP me?

  fosli at asterix /local/lib/gnu/grep-1.5: make all
   cc -DUSG -O -c dfa.c
  Processing include file ./dfa.h
   21   140 | typedef int size_t;
       ............a......
  a - 1506-046: (S) Syntax error.
  File Line Column Message text
   21   140    1 1506-137: (S) Previous declaration must declare
at least one 
  declarator, tag, or the  members of an enumeration.
  Processing include file ./dfa.h
   21   190 | #define NULL 0
      1506-236: (W) Macro name NULL has been redefined.
  make: 1254-004 The error code from the last command is 1.
--
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Oystein Fosli
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