Add sanity checks for far, far distant dates.

[p5sagit/p5-mst-13.2.git] / config_h.SH

diff --git a/config_h.SH b/config_h.SH
index ccb7f10..8392c60 100755 (executable)
--- a/config_h.SH
+++ b/config_h.SH
@@ -894,6 +894,28 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
  */
 #$i_vfork I_VFORK      /**/
 
+/* CAN_VAPROTO:
+ *     This variable is defined on systems supporting prototype declaration
+ *     of functions with a variable number of arguments.
+ */
+/* _V:
+ *     This macro is used to declare function parameters in prototypes for
+ *     functions with a variable number of parameters. Use double parentheses.
+ *     For example:
+ *
+ *             int printf _V((char *fmt, ...));
+ *
+ *     Remember to use the plain simple _() macro when declaring a function
+ *     with no variable number of arguments, since it might be possible to
+ *     have a non-effect _V() macro and still get prototypes via _().
+ */
+#$vaproto CAN_VAPROTO  /**/
+#ifdef CAN_VAPROTO
+#define        _V(args) args
+#else
+#define        _V(args) ()
+#endif
+
 /* INTSIZE:
  *     This symbol contains the value of sizeof(int) so that the C
  *     preprocessor can make decisions based on it.
@@ -2943,6 +2965,12 @@ sed <<!GROK!THIS! >$CONFIG_H -e 's!^#undef\(.*/\)\*!/\*#define\1 \*!' -e 's!^#un
 #define BYTEORDER 0x$byteorder /* large digits for MSB */
 #endif /* NeXT */
 
+/* CHARBITS:
+ *     This symbol contains the size of a char, so that the C preprocessor
+ *     can make decisions based on it.
+ */
+#define CHARBITS $charbits             /**/
+
 /* CASTI32:
  *     This symbol is defined if the C compiler can cast negative
  *     or large floating point numbers to 32-bit ints.