+#ifdef NEED_DECLARATION_STRSTR
+extern char *strstr ();
+#endif
+
+#ifdef NEED_DECLARATION_FREE
+extern void free ();
+#endif
+
+#ifdef NEED_DECLARATION_GETENV
+extern char *getenv ();
+#endif
+
+#ifdef NEED_DECLARATION_ENVIRON
+extern char **environ;
+#endif
+