Fix Warning. ‘void* interruptHandler(void*)’ declared ‘static’ but never defined.

utility/RPi/interrupt.c

@@ -82,7 +82,7 @@ int piHiPri (const int pri)
 }
 
 
-static void *interruptHandler (void *arg)
+void *interruptHandler (void *arg)
 {
   int myPin ;
 

utility/RPi/interrupt.h

@@ -21,7 +21,7 @@ see <http://www.gnu.org/licenses/>
  *      fires.
  *********************************************************************************
  */
-static void *interruptHandler (void *arg);
+void *interruptHandler (void *arg);
 
 #ifdef __cplusplus
 extern "C" {