diff --git a/src/extension/rexx_methods.cc b/src/extension/rexx_methods.cc
index a7cd60f..02730ff 100644
--- a/src/extension/rexx_methods.cc
+++ b/src/extension/rexx_methods.cc
@@ -80,7 +80,11 @@ RexxMethod1(RexxStringObject, rx3270_method_version, CSELF, sessionPtr)
 	if(hSession)
 		return context->String((CSTRING) hSession->get_version().c_str());
 
+#ifdef PACKAGE_VERSION
 	return context->String((CSTRING) PACKAGE_VERSION);
+#else
+	return context->String((CSTRING) STRINGIZE_VALUE_OF(BUILD_DATE));
+#endif
 }
 
 RexxMethod1(RexxStringObject, rx3270_method_revision, CSELF, sessionPtr)
diff --git a/src/extension/rx3270.cc b/src/extension/rx3270.cc
index 58db827..02030c8 100644
--- a/src/extension/rx3270.cc
+++ b/src/extension/rx3270.cc
@@ -35,8 +35,10 @@
   *
   */
 
+ #include <config.h>
  #include <rx3270.h>
 
+
 /*--[ Globals ]--------------------------------------------------------------------------------------*/
 
 /*--[ Implement ]------------------------------------------------------------------------------------*/
diff --git a/src/include/rx3270.h b/src/include/rx3270.h
index c836580..e72fc69 100644
--- a/src/include/rx3270.h
+++ b/src/include/rx3270.h
@@ -31,6 +31,7 @@
 
  #define RX3270_H_INCLUDED 1
 
+ #include <config.h>
  #include <stdint.h>
  #include <errno.h>
  #include <stdio.h>
--
libgit2 0.21.2