Specify Target Environment for HE › Construction Libraries in HE › External Libraries

External Libraries

The external libraries store objects, load modules, and DBRMs, external to CA Gen that CA Gen generated load module reference, including the following:

• External Action Block Load Libraries
• External Action Block DBRM Libraries (for target DBMS DB2)
• External System Load Libraries
• External Compatibility Libraries

CA Gen allows you to specify up to 16 external libraries in each category. A separate panel is used for each category. The panels are identical except for their titles and a note included in the External Compatibility Library panel. The following screen shows where to specify External Libraries:

            Specify External Action Block Load Libraries       Row 1 of 16
Command ===>

F1=Help F2=Accept F3=Exit   F6=Save  F12=Cancel

Command Search
(I,D,R) Order External Action Block Load Library Name
   _       1  _________________________________________________
   _       2 __________________________________________________
   _       3 __________________________________________________
   _       4 __________________________________________________
   _       5 __________________________________________________
   _       6 __________________________________________________
   _       7 __________________________________________________
   _       8 __________________________________________________
   _       9 __________________________________________________
   _      10 __________________________________________________
   _      11 __________________________________________________
   _      12 __________________________________________________
   _      13 __________________________________________________
   _      14 __________________________________________________
   _      15 __________________________________________________
   _      16 __________________________________________________

When CA Gen generates and compiles a load module, it creates installation control information that includes the names of external libraries that are specified for the business system. When CA Gen executes the link edit that creates the executable load module, it resolves all external references. The link-editor searches the external libraries for the members the load module references. The External Compatibility Library names must be different from the External Action Block Load Library names as they contain different compiled versions of the same External Action Block (the same member name). The libraries are searched in the order in which they are specified on the panels.

You are responsible for creating the external libraries before CA Gen uses them. CA Gen does not create or allocate the libraries. Your site determines the characteristics of the external libraries. The external libraries are concatenated with other load libraries and DB2 DBRM libraries when a load module is installed, link edited, and bound.

To avoid concatenation problems, the DCB characteristics for all load libraries that are used during construction is the same and the DCB characteristics for all DB2 DBRM libraries are the same.

More information:

Library Concatenation for Link edit

Library Concatenation for DB2 Bind