Okay, this shoudl provide a fix for the freebsd problem...

Added a ELF_SYS variable and check to configure.in...

src/backend/parser/gram.c

@@ -229,7 +229,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/parser/Attic/gram.c,v 2.47 1998/10/17 04:08:36 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/parser/Attic/gram.c,v 2.48 1998/10/30 04:54:01 scrappy Exp $
  *
  * HISTORY
  *	  AUTHOR			DATE			MAJOR EVENT
@@ -4464,7 +4464,7 @@ static const short yycheck[] = {     3,
     -1,    -1,    -1,    -1,    -1,    -1,   204
 };
 /* -*-C-*-  Note some compilers choke on comments on `#line' lines.  */
-#line 3 "/usr/local/bison/bison.simple"
+#line 3 "/usr/share/misc/bison.simple"
 
 /* Skeleton output parser for bison,
    Copyright (C) 1984, 1989, 1990 Free Software Foundation, Inc.
@@ -4657,7 +4657,7 @@ __yy_memcpy (char *to, char *from, int count)
 #endif
 #endif
 
-#line 196 "/usr/local/bison/bison.simple"
+#line 196 "/usr/share/misc/bison.simple"
 
 /* The user can define YYPARSE_PARAM as the name of an argument to be passed
    into yyparse.  The argument should have type void *.
@@ -10416,7 +10416,7 @@ case 930:
     break;}
 }
    /* the action file gets copied in in place of this dollarsign */
-#line 498 "/usr/local/bison/bison.simple"
+#line 498 "/usr/share/misc/bison.simple"
 
   yyvsp -= yylen;
   yyssp -= yylen;