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Date: Thu, 23 May 2013 11:01:54 +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: <20130523090154.GF22259@calimero.vinschen.de>
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On May 22 23:10, Larry Hall (Cygwin) wrote:
> On 5/22/2013 11:24 AM, Corinna Vinschen wrote:
> >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...
> 
> Can someone *please* donate a cat for Corinna?

Oh, please, no!


Corinna

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

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