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From: Brian Schenkenberger <mail@SendSpamHere.ORG>
Newsgroups: comp.os.vms
Subject: Re: Can C #includes like this be made to work onVMS?
Date: Tue, 15 Oct 2024 15:21:46 -0400
Organization: Tmesis Software
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On 2024-10-15 19:15:00 +0000, John Dallman said:

> In article <vemd23$1qdt1$1@dont-email.me>, mail@SendSpamHere.ORG (Brian
> Schenkenberger) wrote:
> 
>> I want to port a freeware package. It's C code is littered with
>> includes like:
>> 
>> #include "package_name/include_file.h"
>> 
>> I've tried the DECC$***_INCLUDE logicals, the CC command quilifier
>> /INCLUDE_DIRECTORY and logicals, rooted and otherwise, defining
>> "package_name". Can't get the C compiler to find include_file.h.
> 
> Don't try to define "package name". General C practice is to regard that
> as a directory name that the compiler should look for, used to collect
> specific headers together.
> 
> Instead, try using the various ways of specifying where you want include
> files to be read from to indicate the directory that holds the
> "package_name" directory.
> 
> The compiler should look for the directory called "package_nane" and the
> "include_file.h" within it.
> 
> John

In the distribution, the includes are in a directory:

[package_name.INCLUDE]

and the source is in [package_name.SRC]

I am hoping not to have to edit all of the sources to change the 
#include "..."s.