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Date: Sun, 1 Feb 2004 17:34:27 -0700
From: Sean LeBlanc <seanleblanc AT americanisp DOT net>
To: Cygwin List <cygwin AT cygwin DOT com>
Subject: Re: Linking problems
Message-ID: <20040202003427.GA26776@smtp.americanisp.net>
References: <20040201174043 DOT GA20082 AT smtp DOT americanisp DOT net> <6 DOT 0 DOT 1 DOT 1 DOT 0 DOT 20040201181337 DOT 038aab60 AT 127 DOT 0 DOT 0 DOT 1>
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On 02-01 18:16, Larry Hall wrote:
> At 12:40 PM 2/1/2004, Sean LeBlanc you wrote:
> >Hi all. I'm currently having troubles linking against a lib. The signature
> >it complains about certainly shows up when I search the lib. I have been
> >able to build against other libs in the same set (MS' Host Integration
> >Server API), but not against anything in this lib.
> >
> >Are there a set of things to look for when link failures like this happen?
> >Do some windows libs get exported in different ways that require something
> >beyond this:
> >
> >I'm compiling with both -L<libdir> and -l<libname>.  
> >
> >-v doesn't seem to give me any helpful information.
> 
> 
> Please read and follow:
> 
> >Problem reports:       http://cygwin.com/problems.html
> 
> when contacting the list with an issue you believe to be Cygwin-related.
> This allows interested parties on the list to evaluate your problem in 
> the light of some specifics and ask informed follow-up questions.
> 
> Thanks,

Well, I guess this is a way of telling me that I didn't include enough info.
:) 

I'm not intimating that this is a problem with Cygwin or the gcc (ld)
port per se, I'm just trying to find out if maybe there is a different way
that some libs export their methods. Or maybe there is a quirk I'm unaware
of.  Let me reiterate that I have been able to link against other libs in
this same api using this same version of gcc on this same version of
Cygwin...so it's clear that it's possible. 

Anyway, here is a listing of what happens during make when the error occurs.
Maybe this will be provide more insight:

gcc -v -mno-cygwin -L./lib -Wl,--add-stdcall-alias -shared -o cpic.dll
cpic.o -lwcpic32 -lwappc32 -wincsv32
Reading specs from /usr/lib/gcc-lib/i686-pc-mingw32/3.2/specs
gcc: unrecognized option `-wincsv32'
Configured with: /netrel/src/gcc-3.2-3/configure
--enable-languages=c,c++,f77,java --enable-libgcj --enable-threads=posix
--with-system-zlib --enable-
nls --without-included-gettext --enable-interpreter
--disable-sjlj-exceptions --disable-version-specific-runtime-libs
--enable-shared --build=i686-pc-
linux --host=i686-pc-cygwin --target=i686-pc-cygwin --enable-haifa
--prefix=/usr --exec-prefix=/usr --sysconfdir=/etc --libdir=/usr/lib
--includedir=/
nonexistent/include --libexecdir=/usr/sbin
Thread model: posix
gcc version 3.2 20020927 (prerelease)
 /usr/lib/gcc-lib/i686-pc-mingw32/3.2/../../../../i686-pc-mingw32/bin/ld.exe
--shared -Bdynamic -e _DllMainCRTStartup AT 12 -o cpic.dll /usr/lib/gcc-lib/
i686-pc-mingw32/3.2/../../../../i686-pc-mingw32/lib/dllcrt2.o
/usr/lib/gcc-lib/i686-pc-mingw32/3.2/crtbegin.o -L./lib
-L/usr/lib/gcc-lib/i686-pc-mingw
32/3.2
-L/usr/lib/gcc-lib/i686-pc-mingw32/3.2/../../../../i686-pc-mingw32/lib
-L/usr/lib/gcc-lib/i686-pc-mingw32/3.2/../../.. --add-stdcall-alias cpic
.o -lwcpic32 -lwappc32 -lmingw32 -lgcc -lmoldname -lmingwex -lmsvcrt
-lmingw32 -luser32 -lkernel32 -ladvapi32 -lshell32 -lmingw32 -lgcc
-lmoldname -lm
ingwex -lmsvcrt /usr/lib/gcc-lib/i686-pc-mingw32/3.2/crtend.o
cpic.o(.text+0x6a):cpic.c: undefined reference to `cminit AT 12'


Note that this is a DLL I'm trying to build, but I'm also unable to link
when just building an executable that uses this same lib. BTW, searching for
cminit AT 12 on wcpic32.lib does come back with results.

I hope this provides enough info. 

TIA,

-- 
Sean LeBlanc:seanleblanc AT americanisp DOT net  
http://users.americanisp.net/~seanleblanc/
Get MLAC at: http://sourceforge.net/projects/mlac/
If you don't make things happen then things will happen to you. 
-Lanes Company 

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