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From: "Matthew Heaney" <matthew_heaney@acm.org>
Subject: Re: generic packages (again)
Date: 1999/11/19
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In article <812bo1$fir$1@bunyip.cc.uq.edu.au> , "Riyaz Mansoor" 
<s800032@student.uq.edu.au> wrote:

> now i want gen_pack1 (OR pack1, i really don't know) to be compiled
> separately so that any number of packages/programs maybe able to call it
> directly.

Just declare the instantiation as its own library unit:

--pack1.ads
with Gen_Pack1;
package Pack1 is new Get_Pack1;

--pack4.ads
with Pack1;
with Gen_Pack4;
package Pack4 is new Gen_Pack4 (Pack1);

--main.adb
with Pack1;  use Pack1;
with Pack4;  use Pack4;
procedure Main is ...;



--
Evolution is as well documented as any phenomenon in science, as
strongly as the earth's revolution around the sun rather than vice
versa.

Stephen Jay Gould, Time, 23 Aug 1999