load a shared lib created using gcc/Cygwin

Yu-Cheng Chou cycchou@ucdavis.edu
Thu Jun 30 23:36:00 GMT 2005


Hi, 
I want to load the cygwin1.dll with Visual Studio following
the instruction from http://cygwin.com/faq/faq.html#SEC102.
But I can't find winsup/cygwin/how-cygtls-works.txt and the sample code 
in winsup/testsuite/cygload. 
So where can I find these files?

Thanks

> Yu-Cheng Chou wrote:
> 
> > Can a shared library mylib.dll built using
> > gcc -shared -o mylib.dll file.c
> > be loaded dynamically at run time by function
> > LoadLibrary("mylib.dll") in an application built using
> > Visual C++ or .NET?
> > I tried it in Windows XP with the latest version of
> > gcc/Cygwin, the application will hang
> > at LoadLibrary("mylib.dll").
> 
> If mylib.dll depends on cygwin1.dll then this will not work.  To load
> the Cygwin DLL dynamically requires special attention, as described in
> the FAQ: <http://cygwin.com/faq/faq.html#SEC102> and recent mailing
> list
> threads, as this is a very recent ability.
> 
> If mylib.dll does not need functionality from Cygwin, then you should
> compile it with -mno-cygwin, and it will be dynamically loadable without
> extra care just like a standard windows DLL.  More information about
> this is at <http://www.mingw.org/MinGWiki/>.  If you go this route you
> are no longer using Cygwin so your questions should really be addressed
> to the mingw list.
> 
> Brian


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