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From: "Dr Richard A. O'Keefe" <ok@atlas.otago.ac.nz>
Subject: Re: Compiling, binding, and linking an Ada prog. interfaced with C
Date: 1998/07/28
Message-ID: <35BD28BF.A5B@atlas.otago.ac.nz>#1/1
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Organization: Department of Computer Science, University of Otago
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Newsgroups: comp.lang.ada
Date: 1998-07-28T00:00:00+00:00
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You4818 wrote:
> I am trying to interface an Ada program to C, such that the main
> program is in Ada and some entities are being imported from a
> C header file (e.g. constant variables).
> 
> For example, consider the following
> 
> C_File.h  :  #define  Max_Val 100

I see no constant variable here.  All I see is a macro.
If you tried to link this with other *C* code, say

 D_File.c:    extern int Max_Val;

it wouldn't link.  If you want a read-only object in C that
can be accessed from another C file (let alone an Ada file),
you should put

    int const MaxVal = 100;

in a .c file.