Leon Mergen wrote:
Huh ? I don't understand... forgive me for my ignorance, since I'm probably missing your point, but I just, for example, #include
and it just works, without linking to any special lib... what exactly are your needs that require linking against a lib? Or is it that bzip2/zlib support needs linking with a boost library ? Regards,
Leon Mergen http://www.solatis.com/
Hi Leon, Thanks for the response. I read my message again and found that it wasn't very clear. Anyway, I'm building the boost iostreams library with zlib support. When I build it as a static library on Windows (i.e. libboost_iostreams-*.lib), everything works fine. I can include the iostreams headers in my code and link my project to the library without any problems. However, when I build iostreams as a dynamic library and link my project to its import library (i.e. boost_iostreams-*.lib), I receive linker errors about unresolved symbols. The unresolved symbols are symbols from the iostreams' zlib component. I did a symbol listing and found that all the symbols declared in ./boost/iostreams/filter/zlib.hpp were available in the static library, but not in the import library. So it seems that the corresponding implementation file, ./libs/iostreams/src/zlib.cpp, is not being compiled into the dynamic library. So I checked the docs and found a small paragraph stating that if I wanted to include zlib.hpp in my code, then I needed to add zlib.cpp to my project as well as define the preprocessor symbol BOOST_IOSTREAMS_NO_LIB. Here's a link to the doc page: http://www.boost.org/libs/iostreams/doc/installation.html It's the first paragraph under the "Building with an IDE or Makefile" section. Anyway, I followed the doc page and added zlib.cpp to my project. I recompiled and relinked to the dynamic library and everything worked. The doc page appears to backup my finding that zlib.cpp isn't being compiled into the dynamic version of the iostreams library. So my question is .... why? Why is zlib.cpp compiled into the static version of the iostreams library, but not the dynamic version? I would really like to link against a dynamic version of iostreams with zlib support without explicitly adding zlib.cpp to my project. Has anyone been able to do this successfully? Thanks, Rob