1 files changed, 14 insertions, 7 deletions
diff --git a/src/sys/sys.h b/src/sys/sys.h
index 4769832..178fe60 100644
--- a/src/sys/sys.h
+++ b/src/sys/sys.h
@@ -9,6 +9,8 @@
 
 #include "config.h"
 
+#include <string>
+
 /// maximum line size throught the game
 #define MAXCMDSIZE 1024
 
@@ -20,19 +22,24 @@ namespace sys
 typedef void (* signalfunc)(int signum);
 
 /// create a directory
-extern bool mkdir(const char *path);
+void mkdir(const char *path);
+
+void mkdir(const std::string &path);
+
 /// intercept OS signals
-extern void signal(int signum, signalfunc handler);
-/// quit
-/** @param status return value
+void signal(int signum, signalfunc handler);
+
+/** 
+ * @brief operation system exit() application
+ * @param status return value
  */
-extern void quit(int status);
+void quit(int status);
 
 /// suspend process for a number of seconds
-extern void sleep(float seconds);
+void sleep(float seconds);
 
 /// return the current system time of day, in seconds after midnight
-extern unsigned long time();
+unsigned long time();
 
 }