ACATS 3.0 User's Guide
5.2 Tailoring the ACATS Test Suite
There are some files in the delivery that require 
modification before ACATS 3.0 is ready for processing by an Ada implementation. 
Package ImpDef (impdef.a) must be edited to include values suitable for 
proper testing of an implementation if the defaults are not acceptable. 
The macros.dfs file must similarly be edited to include values suitable 
for testing. All .tst files (including package Spprt13 (spprt13s.tst)) 
must have their macro symbols replaced by implementation specific values. 
A body for FcnDecl (fcndecl.ada) must be provided if necessary. Finally, 
Package Report (repbody.ada) must be modified if necessary.
The required customization is described in the following 
sections.
Customizations of these files from previous versions 
of the ACATS suite generally can be used with ACATS 3.0, but users should 
ensure that neither their requirements nor the underlying files have 
changed since the customizations were made.