diff --git a/src/libCom/Makefile b/src/libCom/Makefile
index a1f2927c2..5d33ea7ee 100644
--- a/src/libCom/Makefile
+++ b/src/libCom/Makefile
@@ -225,6 +225,9 @@ INC_vxWorks += iocClock.h
 SRCS_vxWorks += iocClock.c
 SRCS_vxWorks += epicsStdio.c
 
+# For hpux only the Stdio stuff
+SRCS_hpux += epicsStdio.c
+
 #       Library to build:
 #       lib$(LIBRARY).a  or   ..dll/..exp/..lib
 #
diff --git a/src/libCom/osi/os/hpux/epicsStdio.c b/src/libCom/osi/os/hpux/epicsStdio.c
new file mode 100644
index 000000000..db8f08685
--- /dev/null
+++ b/src/libCom/osi/os/hpux/epicsStdio.c
@@ -0,0 +1,54 @@
+/* epicsStdio.c */
+/*************************************************************************\
+* Copyright (c) 2002 The University of Chicago, as Operator of Argonne
+*     National Laboratory.
+* Copyright (c) 2002 The Regents of the University of California, as
+*     Operator of Los Alamos National Laboratory.
+* EPICS BASE Versions 3.13.7
+* and higher are distributed subject to a Software License Agreement found
+* in file LICENSE that is included with this distribution. 
+\*************************************************************************/
+
+#include <stdio.h>
+#include <stdarg.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+#include "epicsStdio.h"
+
+int epicsVsnprintf (
+    char * str, size_t size, const char *format, va_list ap )
+{
+    int rtn;
+
+    rtn = vsnprintf ( str, size, format, ap );
+    if ( rtn >= 0 ) {
+        size_t sizeReturned = (size_t) rtn;
+        if ( sizeReturned < size ) {
+            return rtn;
+        }
+    }
+    if ( rtn == -1 ) {
+        str[size-1] = 0;
+        return (int) size;
+    }
+    return rtn;
+}
+
+int epicsSnprintf (
+    char *str, size_t size, const char *pFormat, ... )
+{
+    int rtn;
+    va_list pvar;
+
+    va_start ( pvar, pFormat );
+    rtn = epicsVsnprintf ( str, size, pFormat, pvar );
+    va_end ( pvar );
+    return ( rtn );
+}
+
+#ifdef  __cplusplus
+}
+#endif
diff --git a/src/libCom/osi/os/hpux/epicsStdio.h b/src/libCom/osi/os/hpux/epicsStdio.h
new file mode 100644
index 000000000..71639792d
--- /dev/null
+++ b/src/libCom/osi/os/hpux/epicsStdio.h
@@ -0,0 +1,28 @@
+/* epicsStdio.h */
+/*************************************************************************\
+* Copyright (c) 2002 The University of Chicago, as Operator of Argonne
+*     National Laboratory.
+* Copyright (c) 2002 The Regents of the University of California, as
+*     Operator of Los Alamos National Laboratory.
+* EPICS BASE Versions 3.13.7
+* and higher are distributed subject to a Software License Agreement found
+* in file LICENSE that is included with this distribution. 
+\*************************************************************************/
+#ifndef epicsStdioh
+#define epicsStdioh
+
+#include <stdio.h>
+#include <stdarg.h>
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+int epicsSnprintf  ( char *str, size_t size, const char *format, ...);
+int epicsVsnprintf ( char *str, size_t size, const char *format, va_list ap);
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif /* epicsStdioh */