Re: [boost] Stupid Win32 DLL vs Static question

From: Paul Selormey (paul_at_[hidden])
Date: 2001-01-10 19:17:23

Right. There is more to it as I have already pointed out to John Maddock.
At least your modification is still imcomplete, you will still need the DLL
for the application to run.

 #   if defined BOOST_DECL_EXPORTS
 #     define BOOST_DECL __declspec(dllexport)
 #   else
 #     define BOOST_DECL __declspec(dllimport)
 #   endif

Unfortunately, my compiler is now running into "internal error.
Therefore, I cannot submit my modifications now.
However, something similar to the following I made to the regular expression
library should work

#ifdef BOOST_RE_AS_DLL                           //---using it as a DLL?
 #ifdef BOOST_RE_BUILD_DLL                    //---building the DLL?
  #define BOOST_RE_IX_DECL __declspec( dllexport )
 #else
//---using the DLL
  #define BOOST_RE_IX_DECL __declspec( dllimport )
    #endif //BOOST_RE_BUILD_DLL
#else
//---not using it as a DLL
 #define BOOST_RE_IX_DECL
#endif //BOOST_RE_AS_DLL
    #include "regex_library_include.hpp"

Instead of the following

   #ifdef _DLL //<--- it is not true that this is defined in DLL build it is
rather similar to _MT!!!
      #ifdef BOOST_RE_BUILD_DLL
         #define BOOST_RE_IX_DECL __declspec( dllexport )
      #elif !defined(BOOST_REGEX_LIBRARY_INCLUDE_HPP) &&
!defined(BOOST_RE_NO_LIB)
         #define BOOST_RE_IX_DECL __declspec( dllimport )
      #endif
   #endif
   #include "regex_library_include.hpp"

Similar modifications are required in the "regex_library_include.hpp" file.

Best regards,
Paul.

----- Original Message -----
From: "Beman Dawes" <beman_at_[hidden]>
To: "Boost.org mailing list" <boost_at_[hidden]>
Sent: Thursday, January 11, 2001 7:33 AM
Subject: [boost] Stupid Win32 DLL vs Static question

> I'm working on prototype build scripts.  In testing, I ran into static
> linking problems.  In boost/config.hpp we now define this:
>
> #   if defined BOOST_DECL_EXPORTS
> #     define BOOST_DECL __declspec(dllexport)
> #   else
> #     define BOOST_DECL __declspec(dllimport)
> #   endif
>
> For static linking to also work, doesn't that have to be:
>
> #   if defined BOOST_DECL_EXPORTS
> #     define BOOST_DECL __declspec(dllexport)
> #   elif defined BOOST_DECL_IMPORTS
> #     define BOOST_DECL __declspec(dllimport)
> #   else
> #     define BOOST_DECL
> #   endif
>
> And for better error detection, add something like:
>
> #   if defined BOOST_DECL_EXPORTS && defined BOOST_DECL_IMPORTS
> #     error both BOOST_DECL_EXPORTS && BOOST_DECL_IMPORTS defined
> #   endif
>
> mystified-again-by-VC++,
>
> --Beman
>
>
>
>