Provide default value for $^O in C

diff --git a/config_h.SH b/config_h.SH
index ad7a69f..f4ecea0 100755 (executable)
--- a/config_h.SH
+++ b/config_h.SH
@@ -1332,6 +1332,12 @@ sed <<!GROK!THIS! >config.h -e 's!^#undef!/\*#define!' -e 's!^#un-def!#undef!'
  */
 #$d_archlib ARCHLIB_EXP "$archlibexp"          /**/
 
+/* OSNAME:
+ *     This symbol contains the name of the operating system, as determined
+ *     by Configure.
+ */
+#define OSNAME "$osname"               /**/
+
 /* BYTEORDER:
  *     This symbol hold the hexadecimal constant defined in byteorder,
  *     i.e. 0x1234 or 0x4321, etc...