Date: Wed, 21 Apr 1999 15:33:57 -0400
Message-Id: <199904211933.PAA08702@envy.delorie.com>
From: DJ Delorie <dj AT delorie DOT com>
To: djgpp AT delorie DOT com
In-reply-to: <7fl6s7$obvl$1@reader3.wxs.nl> (bram.vaessen@fnmail.com)
Subject: Re: multiple cpp files
References:  <7fl6s7$obvl$1 AT reader3 DOT wxs DOT nl>
Reply-To: djgpp AT delorie DOT com
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> I have a little project with a few cpp files and a header file. The problem
> is that i want to define a few variables that are known all over the project
> in all cpp files. If i define them in the header file and include the header
> file in all the cpp files they all compile but it won't link (multiple
> define error). So how can i do this? (if it is possible).

Sounds like you're forgetting the "extern" keyword.

http://www.delorie.com/djgpp/doc/ug/ - the "larger progects" sections.