Re: Access multiple libraries on Vax with Ada

Re: Access multiple libraries on Vax with Ada

[Fred Stluka]

In article <1187@wrdis01.af.mil> cfranz@wrdis01.af.mil (Claus Franzkowiak) writ
es:
> Does someone know how to access a foreign Ada library on the Vax?
> I have withed 15 packages in a file.ada which are NOT in my [user.adalib].
> I tried the "entry foreign" ACS command for one package, but it didn't work.
> I would appreciate if someone helps me with this problem.

The word "foreign" in the ACS ENTER FOREIGN command in VAX Ada 
means "non-Ada".  That command can be used to enter object modules
genrated by other compilers into an Ada library.  It can also be 
used to enter shareable images, linker option files, and object 
module libraries, into an Ada library.  A very useful command, but 
not the one you are looking for.

To "with" Ada modules from another Ada library, you have 3 choices:

     ACS ENTER UNIT 

          Make a unit in another library visible to this library.

     ACS CREATE SUBLIBRARY 

          Makes the entire contents of another library visible to 
          this library, by making this library a sublibrary of the
          other library.  Restriction: Each library can have only 
          one parent.  Not intended for general shared access; but
          rather as a mechanism for creating a subordinate library
          in which you modify and test units from the parent library
          before promoting them back into the parent for general 
          use.

     ACS SET LIBRARY /PATH    [New as of Ada 2.2, VMS 5.4]

          Makes a list of other libraries visible to the current 
          library.

--Fred
-- 
Fred Stluka                               Internet: stluka@software.org
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