Re: [boost] DLL names under windows

From: David Abrahams (david.abrahams_at_[hidden])
Date: 2001-10-20 06:43:51

John,

Please describe for me the behavior you would like to see. I'm sure some
facility for this can now be easily integrated with the build system.

-Dave

===================================================
  David Abrahams, C++ library designer for hire
 resume: http://users.rcn.com/abrahams/resume.html

        C++ Booster (http://www.boost.org)
          email: david.abrahams_at_[hidden]
===================================================

----- Original Message -----
From: "John Maddock" <John_Maddock_at_[hidden]>
To: <boost_at_[hidden]>
Sent: Saturday, October 20, 2001 6:52 AM
Subject: [boost] DLL names under windows

>
> >Now that I have a basic build system running, I notice that the Regex
DLLs
> generated have a name I expect would be the same if I compiled with >MSVC,
> or Cygwin.  Would these DLLs be interchangeable?  I doubt it.  Given the
> windows practice of installing (almost) all DLLs in the system >folder,
> isn't this asking for trouble if two tools supplied by different vendors
> rely on the same boost library, but use different compilers?
>
> Yes absolutely, and that's one reason why the regex lib still ships with
> makefiles.  This is not just a win32 issue, on some unix systems you more
> or less have to place shared libs in a particular location, placing them
> elsewhere can be very much "non-trivial" , involving either a hardcoded
> path at link time, or some extra environment variables.
>
> There is also another issue - since the jam generated libs all have the
> same name, it's not possible to use automatic lib selection using the
> #pragma comment(lib,"somefile.lib") syntax.  And that's a very useful
> feature to have, both for the end user, and for the developer - it cuts
> down a lot on messages like "why does my program crash at runtime", that
> are due to linking with the wrong lib build.  These errors are almost
> impossible to track down via email BTW, and are surprisingly easy to
> commit, especially with the Borland compiler for some reason.
>
>
> - John Maddock
> http://ourworld.compuserve.com/homepages/john_maddock/
>
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