From:	"John S. Fine" <johnfine AT erols DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: NASM function -> undefined reference
Date:	Mon, 25 Jan 1999 13:56:50 -0500
Lines:	27
Message-ID:	<36ACBE72.4F83@erols.com>
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To:	djgpp AT delorie DOT com
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Florian Janoschek wrote:

> today I started to use NASM and djgpp together and soon encountered the
> following problem:

> GLOBAL _test
> SECTION .text
> _test: push ebp
. . .
> In C++ I wrote something like that:
> 
> extern void test(void);

  Since your NASM code uses DJGPP's C naming rules, not C++ name
mangling rules, you need to tell C++ that it is a C name.  I
never use C++ myself, but I think the syntax is:

extern "C" void test(void);

  Alternatively, you could change the NASM code to use the C++
name;  But I don't think the rules are documented anywhere, so
you might need to compile the C++ code once with -S in order
to generate a .s file and then look for test in the .s file
to see what the name really looks like.
-- 
http://www.erols.com/johnfine/
http://www.geocities.com/SiliconValley/Peaks/8600/

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