(b4_token_defines): Protect against double-inclusion

by wrapping enum yytokentype's definition inside #ifndef
YYTOKENTYPE.  This undoes a bug I introduced on 2002-10-12.

diff --git a/data/c.m4 b/data/c.m4
index 21145a175fbe918e6805a9214fbfa3fe8fb0161d..417ccd213d11674fc97ce68170b64bd69e117fd6 100644 (file)
--- a/data/c.m4
+++ b/data/c.m4
@@ -107,7 +107,8 @@ m4_define([b4_token_enum],
 m4_define([b4_token_defines],
 [m4_if([$@], [[]], [],
 [/* Tokens.  */
 m4_define([b4_token_defines],
 [m4_if([$@], [[]], [],
 [/* Tokens.  */

-#if defined (__STDC__) || defined (__cplusplus)
+#ifndef YYTOKENTYPE
+# define YYTOKENTYPE

    /* Put the tokens into the symbol table, so that GDB and other debuggers
       know about them.  */
    enum yytokentype {
    /* Put the tokens into the symbol table, so that GDB and other debuggers
       know about them.  */
    enum yytokentype {