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From:	=?ISO-8859-1?Q?Hans-Bernhard_Br=F6ker?= <HBBroeker AT t-online DOT de>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: problem with AS from binutils 2.21.1
Date:	Tue, 03 Jan 2012 23:03:38 +0100
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On 03.01.2012 02:09, RayeR wrote:

> As a mistake I wrote that object file reached about 3,4MB but it
> should be size of temp. asm file (L:\WINXP\TEMP/ccOqvtFj.s) which even
> growed over 11MB - hard to exactly say I was observing temp directory
> and afer it was done temp file disappeared.

If you want a real look, add the -save-temps flag to your compilation 
flags.  That will preserve all the intermediate files, including the asm 
source.

> Any idea about the waring in libc:
> e:/djgpp/lib/libc.a(d0e01.o): warning: previous common is here
> e:/djgpp/lib/libc.a(d0600.o): warning: multiple common of
> `___dpmi_error'
>
> I can found only definition in DPMI.H
> extern unsigned short __dpmi_error;

Actually, that's not a definition you found.  It's a declaration.

The message itself is most likely caused by the presence of the 
--warn-common flag in the effective linker command line.  It's 
complaining about multiple not-quite-definitions which, in a C program, 
would look like this:

	unsigned short __dpmi_error;

In the actual DJGPP libc sources, those are assembly modules, but the 
story is essentially the same.  "common" definitions are considered 
normal in the Unix world, including DJGPP, so it's not a terribly good 
idea to activate that linker warning in code meant for a Unix platform. 
  That said, you can just ignore the warning.

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