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From: rfg@ics.uci.edu (Ronald Guilmette)
Newsgroups: comp.lang.c++
Subject: Re: Including C files into a C++ program
Keywords: C, C++, #include
Message-ID: <26462D94.7559@paris.ics.uci.edu>
Date: 8 May 90 02:23:16 GMT
References: <1990May7.172718.3230@IRO.UMontreal.CA>
Reply-To: rfg@ics.uci.edu (Ronald Guilmette)
Organization: UC Irvine Department of ICS
Lines: 34

In article <1990May7.172718.3230@IRO.UMontreal.CA> mailhot@IRO.UMontreal.CA (Pierre Mailhot) writes:
>I'm sorry if this topic has already been covered several times before,
>but I'm relatively new as regard of C++ and I'm looking for a simple way
>to include C program source code into a C++ program.
>
>My problem is as followed: I'm currently using a modified version of the AT&T
>C++ preprocessor which when I include C #include files in a C++ program
>doesn't include the #define instructions from these files.
>
>As anybody encountered this problem and/or found a solution to it?
>
>Please e-mail me any answer.

Sorry.  I'm posting my reply because it may be of general interest.

If you have a (modified & non-standard) preprocessor which is broken,
the solution is to get one which is not modified and/or not broken.

If you include a file, you should get the #defines in that file.

For now, let's assume that you are going to get a non-broken preprocessor.

Now, if you have code (either "base" files or include files) which you need
to run through a C++ translator or compiler, you may (and probably will) need
to make modifications to that code before it will pass cleanly through a
C++ language processor.

Some of the modifications can be made for you via an automated tool that I
have built called protoize.  This tool is freely available.  Send me mail
and I'll tell you how to obtain a copy.

// Ron Guilmette (rfg@ics.uci.edu)
// C++ Entomologist
// Motto:  If it sticks, force it.  If it breaks, it needed replacing anyway.