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From:	Philipp Kraus <philipp DOT kraus AT flashpixx DOT de>
Subject:	Re: linker error libcygwin
Date:	Thu, 10 Nov 2011 22:22:48 +0100
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On 2011-11-10 22:11:48 +0100, Greg Chicares said:

> On 2011-11-10 20:39Z, Kraus Philipp wrote:
>> 
>> I try to build a program with g++ under Cygwin. I added this libraries 
>> to the linker:
>> -lcygboost_system
> 
> Shouldn't that be '-lboost_system'? Run 'info ld' and search for
> '--dll-search-prefix': 'cyg-' is a typical default prefix that
> the '-l' option should recognize without your specifying it.

okay, thanks for this hint

> 
>> /usr/lib/gcc/i686-pc-cygwin/4.5.3/../../../libcygwin.a(libcmain.o):(.text+0xa9): 
>> 
>> undefined reference to `_WinMain AT 16'
>> collect2: ld returned 1 exit status
> 
> Does this thread
>   http://cygwin.com/ml/cygwin/2011-10/threads.html#00440
> contain the answer?

no, sorry.

>  If this is a console application, does it have
> an implementation of main()?

yes the signature of the main is in this example:
int main(int argc, char* argv[])

> Or if it's a windows GUI application,
> is WinMain() implemented in some object file passed to the linker?

No i don't use the WinMain() and I call the compiler / linker with -mconsole
but on 3 examples the error with the WinMain is shown, on other examples
everything works fine, so I don't understand it

Thanks

Phil




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