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Reply-To: lhall AT rfk DOT com
From: "lhall AT pop DOT ma DOT ultranet DOT com" <lhall AT pop DOT ma DOT ultranet DOT com>
To: trimurthi DOT swamy AT honeywell DOT com, cygwin AT cygwin DOT com
Subject: RE: linking problem, please help
Date: Mon, 23 Dec 2002 10:43:39 -0500
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Well I'm glad to hear you were searching the internet for solutions 
to your problems.  I hope you started at http://gcc.gnu.org/.  

Turns out, this isn't a tool problem at all (I know, you didn't imply 
that it was).  It's a usage problem.  And actually, the Cygwin email 
archives is full of inquiries and responses with just this kind of 
problem, even though the issue is not Cygwin-specific.  Your problem is 
that you compiled with the C++ front-end (g++) but then linked with the 
C library (-lc) instead of the C++ library.  But that's just the tip of 
the iceberg in this case.  If you really just want to create an executable,
just use 'g++ -o test test.cpp'.  This will work for you.  By the way,
'test'
is a really bad name for an executable.  It hides the name of the shell 
script built-in.

Larry


Original Message:
-----------------
From: Trimurthi, Swamy(IE10) Trimurthi DOT Swamy AT honeywell DOT com
Date: Mon, 23 Dec 2002 07:17:48 -0700
To: cygwin AT cygwin DOT com, Trimurthi DOT Swamy AT honeywell DOT com
Subject: RE: linking problem, please help


Hi Igor,
	Thanks for the information and guidance. I will avoid sending
personal mails hereafter.
regards,
Trimurthi 

> -----Original Message-----
> From:	Igor Pechtchanski [SMTP:pechtcha AT cs DOT nyu DOT edu]
> Sent:	Monday, December 23, 2002 7:55 PM
> To:	Trimurthi, Swamy(IE10)
> Cc:	cygwin AT cygwin DOT com
> Subject:	Re: linking problem, please help
> 
> Trimurthi,
> 
> The cygwin mailing list is the proper place for such inquiries.  It is
> strongly discouraged to send personal mail with such requests, and they
> will, in general, be ignored.  I've forwarded this request to the proper
> mailing list, and reset the Reply-to: field accordingly for your
> convenience.
> 	Igor
> 
> On Mon, 23 Dec 2002, Trimurthi, Swamy(IE10) wrote:
> 
> > Hi Pechta,
> >      I found your mail id while searchig for some solution on the
> internet
> > regarding a linking problem I am facing. It would be of great help to me
> if
> > I can get some guidance from you.  I am using cygwin version [ GNU bash,
> > version 2.05.0(8)-release (i686-pc-cygwin) ] on a WinNT machine, x86
> > processor. I was trying to link the following sample code
> >
> > *************************************
> >
> > #include<iostream>
> >
> > int main()
> > {
> > 	cout<<"\n hello world";
> > 	return 0;
> > }
> >
> > **************************************
> > I was able to compile the code using the following command
> > g++ -c test.cpp
> > and generated the object code test.o, but I was not able to link it
> using ld
> > and hence unable to generate the exe
> > I gave the ld command and following was the output
> > *************************************************
> > $ ld -o test C:/cygwin/lib/crt0.o test.o -lc
> > test.o(.text+0x24):test.cpp: undefined reference to `cout'
> > test.o(.text+0x29):test.cpp: undefined reference to
> > `ostream::operator<<(char const *)'
> > test.o(.text$__tf3ios+0x29):test.cpp: undefined reference to `__rtti_si'
> > test.o(.text$__tf9streambuf+0x29):test.cpp: undefined reference to
> > `__rtti_si'
> > test.o(.text$__tf7filebuf+0x29):test.cpp: undefined reference to
> `__rtti_si'
> > test.o(.text$__tf7ostream+0x28):test.cpp: undefined reference to
> > `__rtti_class'
> > test.o(.text$__tf7istream+0x28):test.cpp: undefined reference to
> > `__rtti_class'
> > test.o(.text$__tf8iostream+0x30):test.cpp: undefined reference to
> > `__rtti_class'
> > test.o(.text$__tf22_IO_istream_withassign+0x28):test.cpp: undefined
> > reference to `__rtti_class'
> > test.o(.text$__tf22_IO_ostream_withassign+0x28):test.cpp: undefined
> > reference to `__rtti_class'
> > test.o(.text$__tf11_ios_fields+0x1d):test.cpp: undefined reference to
> > `__rtti_user'
> > test.o(.text$__tf8_IO_FILE+0x1d):test.cpp: undefined reference to
> > `__rtti_user'
> > /usr/lib/libc.a(_cygwin_crt0_common.o): In function
> `cygwin_crt0_common':
> >
> /cygnus/netrel/src/cygwin-1.3.3-2/winsup/cygwin/lib/_cygwin_crt0_common.cc
> :9
> > 0: undefined reference t
> > o `GetModuleHandleA AT 4'
> > **************************************************
> > Could you guide me like where the problem is and whether do I need to
> > include crtbegin and crtend files. When these files are generally
> required.
> > I am eager to hear from you
> >
> > thanks in advance,
> > regards,
> > Trimurthi
> 
> -- 
> 				http://cs.nyu.edu/~pechtcha/
>       |\      _,,,---,,_		pechtcha AT cs DOT nyu DOT edu
> ZZZzz /,`.-'`'    -.  ;-;;,_		igor AT watson DOT ibm DOT com
>      |,4-  ) )-,_. ,\ (  `'-'		Igor Pechtchanski
>     '---''(_/--'  `-'\_) fL	a.k.a JaguaR-R-R-r-r-r-.-.-.  Meow!
> 
> Oh, boy, virtual memory! Now I'm gonna make myself a really *big* RAMdisk!
>   -- /usr/games/fortune

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