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Library "libz" Windows Link Warnings Report


From: Conrad T. Pino
Subject: Library "libz" Windows Link Warnings Report
Date: Sat, 17 Apr 2004 11:46:22 -0700

Hi All,

> From: Derek Robert Price [mailto:address@hidden
> Sent: Saturday, April 17, 2004 04:57
> Subject: Re: Patch: Visual C++ Library Project Renames - libcvs & libz
> 
> I noticed one mistake I don't have time to correct at the moment,
> which is that libz.* is compiling minigzip.c and shouldn't be.
> minigzip is a test executable.

> From: Conrad T. Pino [mailto:address@hidden
> Sent: Saturday, April 17, 2004 10:35
> Subject: RE: Patch: Visual C++ Library Project Renames - libcvs & libz
> 
> I can't take the credit since inclusion of this file precedes me.
> See "zlib/zlib.dsp" file Revision 1.1, Apr 26 1999 UTC by kingdon:
> http://ccvs.cvshome.org/source/browse/ccvs/zlib/Attic/zlib.dsp?rev=1.1
> 
> Nevertheless I'm happy to take responsibility.
> 
> I've saw this and other similar warnings in linking but assumed
> their presence was well known.
> 
> I'll assemble a link warnings report and publish as new thread to
> "Bug-CVS" for comment and recommendations very shortly.
====================
Library "libz" Windows link warnings output follows:
--------------------Configuration: libz - Win32 Debug--------------------
Compiling...
[snip]
Creating library...
example.obj : warning LNK4006: _main already defined in minigzip.obj; second 
definition ignored
====================
The single LNK4006 warning arises because files:

        zlib/example.c
        zlib/minizip.c

both define an "int main( )" function.

I've looked at both files briefly and they both appear to be test
programs as pointed out by Derek Price for "minizip.c".
====================
Deep history of this library's build:

Review "zlib/zlib.dsp" file Revision 1.1, Apr 26 1999 UTC by kingdon:
http://ccvs.cvshome.org/source/browse/ccvs/zlib/Attic/zlib.dsp?rev=1.1
and please note that both:

        zlib/example.c
        zlib/minizip.c

have been present in the build for quite some time.

Revision 1.2 occurred Mar 26 2004 UTC by dprice and I feel safe in
assuming Derek Price made no changes with respect to the above.
====================
I tested the removal of both files from the library build and their
removal doesn't affect creation of "cvs.exe" file.
====================
Best regards,

Conrad Pino




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