Expose the prototype for getMonotonicNSec

Fixes T3807 on OS X 32.

includes/Rts.h

@@ -226,6 +226,7 @@ INLINE_HEADER Time fsecondsToTime (double t)
 #include "rts/Flags.h"
 #include "rts/Adjustor.h"
 #include "rts/FileLock.h"
+#include "rts/GetTime.h"
 #include "rts/Globals.h"
 #include "rts/IOManager.h"
 #include "rts/Linker.h"

includes/rts/GetTime.h

+/* -----------------------------------------------------------------------------
+ *
+ * (c) The GHC Team, 1995-2009
+ *
+ * Interface to the RTS time
+ *
+ * Do not #include this file directly: #include "Rts.h" instead.
+ *
+ * To understand the structure of the RTS headers, see the wiki:
+ *   http://hackage.haskell.org/trac/ghc/wiki/Commentary/SourceTree/Includes
+ *
+ * ---------------------------------------------------------------------------*/
+
+#ifndef RTS_GETTIME_H
+#define RTS_GETTIME_H
+
+StgWord64 getMonotonicNSec (void);
+
+#endif /* RTS_GETTIME_H */

rts/GetTime.h

@@ -12,7 +12,6 @@
 #include "BeginPrivate.h"
 
 void initializeTimer       (void);
-StgWord64 getMonotonicNSec (void);
 
 Time getProcessCPUTime     (void);
 Time getThreadCPUTime      (void);