[Boost-users] Building iostreams with zlib support on Windows XP in mingw-msys

17 Jan 2009

      I use bjam like so:

bjam toolset=gcc link=static runtime-link=static threading=single \
--with-iostreams --with-filesystem \
-sNO_COMPRESSION=0 -sNO_ZLIB=0 -sZLIB_SOURCE=C:/zlib123 \
--build-type=release install

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But, I do not believe that zlib is being built or linked in to iostreams.
The only libs I get in C:/Boost/lib after bjam are these:

libboost_filesystem-mgw34-s.lib
libboost_system-mgw34-s.lib
libboost_iostreams-mgw34-s.lib

However, the output from bjam does not indicate any errors with iostreams or
zlib.

--------------------------------------------------

When I try to compile the zlib example from here:

http://www.boost.org/doc/libs/1_37_0/libs/iostreams/doc/classes/zlib.html#ex...

I get these errors:

C:/Users/e4m/AppData/Local/Temp/ccSscQ9O.o:zlib_test.cpp:(.text$_ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEED2Ev[boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char>
...
::~zlib_decompressor_impl()]+0x58): undefined reference to
`boost::iostreams::detail::zlib_base::reset(bool, bool)'
C:/Users/e4mAppData/Local/Temp/ccSscQ9O.o:zlib_test.cpp:(.text$_ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEED2Ev[boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char>
::~zlib_decompressor_impl()]+0x6a): undefined reference to
`boost::iostreams::detail::zlib_base::~zlib_base()'
...
...
...
--------------------------------------------------

I am trying to compile the example like this:

g++ -static -O3 zlib_test.cpp -o zlib_test.exe
-Ic://Boost/include/boost-1_37/ c://Boost/lib/libboost_iostreams-mgw34-s.lib

--------------------------------------------------

Here is the example source code as I have modified it slightly while
experimenting:

#include <fstream>
#include <iostream>
#include <boost/iostreams/filtering_streambuf.hpp>
#include <boost/iostreams/copy.hpp>
#include <boost/iostreams/filter/zlib.hpp>
//#include "C:/boost_1_37_0/boost_1_37_0/libs/iostreams/src/zlib.cpp"

#define BOOST_IOSTREAMS_NO_LIB

int main()

{
    using namespace std;
    using namespace boost::iostreams;

    ifstream file("hello.z", ios_base::in | ios_base::binary);
    filtering_streambuf<input> in;
    in.push(zlib_decompressor());
    in.push(file);
    boost::iostreams::copy(in, cout);

    return 0;
}

--------------------------------------------------

I've googled a lot for the last week trying to figure out what I'm doing
wrong, to no avail... Can someone help me?

Thanks,
e