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Date:	Wed, 22 May 2013 17:24:50 +0200
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: Including full path to shared library in the executable file
Message-ID:	<20130522152450.GA22259@calimero.vinschen.de>
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On May 22 10:58, Christopher Faylor wrote:
> On Wed, May 22, 2013 at 10:47:11AM +0200, Corinna Vinschen wrote:
> >On May 21 21:43, Balaji Venkataraman wrote:
> >> On Tue, May 21, 2013 at 9:19 PM, Balaji Venkataraman wrote:
> >> 
> >> > My question is whether there is a way to include the full path to the .dll
> >> > while creating the .exe - much like how cmake "link_directories" or
> >> > "target_link_libraries" allows you to - for e.g. on Linux (an ldd on the
> >> > executable file shows the full path to the .so file and thus
> >> > precludes the need to explicitly set LD_LIBRARY_PATH). While this is not a
> >> > cmake question (or a cmake mailing list) if you have experience solving
> >> > this problem using cmake, would appreciate those insights as well.
> >> 
> >> I found this while looking for cygwin RPATH:
> >> http://www.cmake.org/pipermail/cmake/2007-October/017267.html. Perhaps
> >> the lack of RPATH support on Windows/Cygwin is the reason?
> >
> >RPATH is an ELF feature.  Full paths to DLLs are not supported by the
> >PE/COFF executable format.  Also, Cygwin DLLs are still loaded by the
> >Windows loader, so POSIX paths won't work, and full Windows paths won't
> >make much sense, given that Cygwin is not always installed into
> >C:\cygwin.
> >
> >The solution for this would be an ELF loader in Cygwin and a Cygwin
> >linker which produces ELF DLLs by default.  But that's quite a big
> >project on its own and nobody seemed to have fun, time, or money, to
> >implement this.
> 
> So, maybe *next* Thursday then?

Alas, I still have no cat...


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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