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From: Juha.Koivisto@tel.vtt.fi (Juha Koivisto)
Newsgroups: comp.lang.c++
Subject: Unreasonable include nesting
Message-ID: <5232@hemuli.tik.vtt.fi>
Date: 9 Nov 90 09:00:14 GMT
Sender: news@hemuli.tik.vtt.fi
Distribution: comp
Organization: Technical Research Centre of Finland
Lines: 23


I am running C++ cfront 2.1 (the version delivered with Objectworks 
for C++) on Sparc station 1.  The preprocessor complains about 
"Unreasonable include nesting" when my file hierarchy is deeper 
than about 11 levels.  In other words, a header file includes 
the header file of its base class, which includes the header 
file of its base class etc. more than about 11 times.

I can see the point in having a nesting limit in C preprocessor
but not in C++ preprocessor.  C++ programmers are supposed to be able
to use arbitrarily complex class hierarchies without having to
read all the class definitions, right?

So, is there a switch or some trick or some preprocessor to 
overcome this include nesting limit?  I do not want to flatten my 
file hierarchy, and I do not want my .C files to know about the 
inheritance hierarchy.

			Juha Koivisto
			Technical Research Centre of Finland
			Telecommunications Laboratory
			
			Juha.Koivisto@tel.vtt.fi