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From: Stephen Leake <Stephe.Leake@nasa.gov>
Newsgroups: comp.lang.ada
Subject: Re: circular unit dependency
Date: 23 May 2003 14:08:42 -0400
Organization: NASA Goddard Space Flight Center (skates.gsfc.nasa.gov)
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Mirko Aigner <Mirko.Aigner@alcatel.de> writes:

> Hi Again !!
> 
> Any way to prevent this compiler error (circular unit dependency)
> without deleting one of the "with" statements ?!

You will have to change something. You'll have to post the code, so we
can help you figure out what to change. Try to simplify it first.

If you have something like:

with A;
package B is
  
   type B_Type is record
      A_Obj : A.A_Type;
   end record;
end B;

with B;
package A is
  
   type A_Type is record
      B_Obj : B.B_Type;
   end record;
end A;

then the only way to "fix" this is to put both types in one package.
They belong together, since they are dependent on each other.

Other types of circular with can be cured by introducing a "parent" type.

> Is there any way to make sure that on spec is only once "included"
> ?!

"with" in Ada is really, really _not_ the same as "include" in C. By
definition, each package is in the library only once.

-- 
-- Stephe