diff --git a/library/timing.c b/library/timing.c
index eb41461..a5a55d6 100644
--- a/library/timing.c
+++ b/library/timing.c
@@ -56,17 +56,18 @@
 
 #include <unistd.h>
 #include <sys/types.h>
-#include <sys/time.h>
 #include <signal.h>
+#if defined(MBEDTLS_HAVE_TIME)
 #include <time.h>
-
+#include <sys/time.h>
 struct _hr_time
 {
     struct timeval start;
 };
-
+#endif
 #endif /* _WIN32 && !EFIX64 && !EFI32 */
 
+#if defined(MBEDTLS_HAVE_TIME)
 #if !defined(HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) &&  \
     ( defined(_MSC_VER) && defined(_M_IX86) ) || defined(__WATCOMC__)
 
@@ -364,7 +365,6 @@
     return( 0 );
 }
 
-#endif /* !MBEDTLS_TIMING_ALT */
 
 #if defined(MBEDTLS_SELF_TEST)
 
@@ -527,4 +527,44 @@
 
 #endif /* MBEDTLS_SELF_TEST */
 
+#else
+volatile int mbedtls_timing_alarmed = 0;
+int mbedtls_timing_get_delay( void *data )
+{
+    (void) data;
+    return( 0 );
+}
+
+void mbedtls_timing_set_delay( void *data, uint32_t int_ms, uint32_t fin_ms )
+{
+    (void) data;
+    (void) int_ms;
+    (void) fin_ms;
+}
+
+unsigned long mbedtls_timing_get_timer( struct mbedtls_timing_hr_time *val, int reset )
+{
+    (void) val;
+    (void) reset;
+    return( 0 );
+}
+
+unsigned long mbedtls_timing_hardclock( void )
+{
+    return( 0 );
+}
+
+void mbedtls_set_alarm( int seconds )
+{
+    (void) seconds;
+}
+#if defined(MBEDTLS_SELF_TEST)
+int mbedtls_timing_self_test( int verbose )
+{
+    (void) verbose;
+    return( 0 );
+}
+#endif /* MBEDTLS_SELF_TEST */
+#endif /* MBEDTLS_HAVE_TIME */
+#endif /* !MBEDTLS_TIMING_ALT */
 #endif /* MBEDTLS_TIMING_C */