[Boost-users] How to use boost iostream with zlib

From: Ron Lau (ronyclau_at_[hidden])
Date: 2007-07-06 11:41:23

I can successfully compile the code with the add of one "using" statement
but the linker reports linker error.

Code:

// ...
#include <boost/iostreams/copy.hpp>
#include <boost/iostreams/filter/zlib.hpp>

int main()
{
    using namespace std;
    using namespace boost::iostreams; // Added this line.
    ifstream file("hello.z", ios_base::in | ios_base::binary);
    filtering_streambuf<input> in;
    // ...
}

Linker error:
g++ -ozlib.exe -lboost_iostreams-mgw34-mt-1_34 zlib.cpp
SOME/PATH/HERE/ccW0caaa.o(.text$_ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEEC2Ei[boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char>
>::zlib_decompressor_impl(int)]+0x46):zlib.cpp: undefined reference to
`boost::iostreams::detail::zlib_base::zlib_base()'
SOME/PATH/HERE/ccW0caaa.o(.text$_ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEEC2Ei[boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char>
>::zlib_decompressor_impl(int)]+0x66):zlib.cpp: undefined reference to
`boost::iostreams::zlib::default_strategy'
SOME/PATH/HERE/ccW0caaa.o(.text$_ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEEC2Ei[boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char>
>::zlib_decompressor_impl(int)]+0x7f):zlib.cpp: undefined reference to
`boost::iostreams::zlib::deflated'
SOME/PATH/HERE/ccW0caaa.o(.text$_ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEEC2Ei[boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char>
>::zlib_decompressor_impl(int)]+0x88):zlib.cpp: undefined reference to
`boost::iostreams::zlib::default_compression'
SOME/PATH/HERE/ccW0caaa.o(.text$_ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEEC2Ei[boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char>
>::zlib_decompressor_impl(int)]+0xff):zlib.cpp: undefined reference to
`boost::iostreams::detail::zlib_base::~zlib_base()'
SOME/PATH/HERE/ccW0caaa.o(.text$_ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEED2Ev[boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char>
>::~zlib_decompressor_impl()]+0x18):zlib.cpp: undefined reference to
`boost::iostreams::detail::zlib_base::~zlib_base()'
SOME/PATH/HERE/ccW0caaa.o(.text$_ZN5boost9iostreams6detail9zlib_base4initISaIcEEEvRKNS0_11zlib_paramsEbRNS1_14zlib_allocatorIT_NS1_21zlib_allocator_traitsIS9_E4typeEEE[void
boost::iostreams::detail::zlib_base::init<std::allocator<char>
>(boost::iostreams::zlib_params const&, bool,
boost::iostreams::detail::zlib_allocator<std::allocator<char>,
boost::iostreams::detail::zlib_allocator_traits<std::allocator<char>
>::type>&)]+0x67):zlib.cpp: undefined reference to
`boost::iostreams::detail::zlib_base::do_init(boost::iostreams::zlib_params
const&, bool, void* (*)(void*, unsigned int, unsigned int), void (*)(void*,
void*), void*)'
SOME/PATH/HERE/ccW0caaa.o(.text$_ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEE6filterERPKcS6_RPcS8_b[boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char>
>::filter(char const*&, char const*, char*&, char*, bool)]+0x2f):zlib.cpp:
undefined reference to `boost::iostreams::detail::zlib_base::before(char
const*&, char const*, char*&, char*)'
SOME/PATH/HERE/ccW0caaa.o(.text$_ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEE6filterERPKcS6_RPcS8_b[boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char>
>::filter(char const*&, char const*, char*&, char*, bool)]+0x34):zlib.cpp:
undefined reference to `boost::iostreams::zlib::sync_flush'
SOME/PATH/HERE/ccW0caaa.o(.text$_ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEE6filterERPKcS6_RPcS8_b[boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char>
>::filter(char const*&, char const*, char*&, char*, bool)]+0x43):zlib.cpp:
undefined reference to `boost::iostreams::detail::zlib_base::inflate(int)'
SOME/PATH/HERE/ccW0caaa.o(.text$_ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEE6filterERPKcS6_RPcS8_b[boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char>
>::filter(char const*&, char const*, char*&, char*, bool)]+0x67):zlib.cpp:
undefined reference to `boost::iostreams::detail::zlib_base::after(char
const*&, char*&, bool)'
SOME/PATH/HERE/ccW0caaa.o(.text$_ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEE6filterERPKcS6_RPcS8_b[boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char>
>::filter(char const*&, char const*, char*&, char*, bool)]+0x72):zlib.cpp:
undefined reference to `boost::iostreams::zlib_error::check(int)'
SOME/PATH/HERE/ccW0caaa.o(.text$_ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEE6filterERPKcS6_RPcS8_b[boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char>
>::filter(char const*&, char const*, char*&, char*, bool)]+0x7b):zlib.cpp:
undefined reference to `boost::iostreams::zlib::stream_end'
SOME/PATH/HERE/ccW0caaa.o(.text$_ZN5boost9iostreams6detail22zlib_decompressor_implISaIcEE5closeEv[boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char>
>::close()]+0x1d):zlib.cpp: undefined reference to
`boost::iostreams::detail::zlib_base::reset(bool, bool)'
collect2: ld returned 1 exit status

Built using Boost 1.34 with Multi-threading support, MinGW g++ 3.42

On 06/07/07, Meryl Silverburgh <silverburgh.meryl_at_[hidden]> wrote:
>
> On 7/4/07, eg <egoots_at_[hidden]> wrote:
> > Meryl Silverburgh wrote:
> > > Hi,
> > >
> > > Can you please tell me how can I use  boost iostream with zlib to
> > > inflate an byte stream?
> > > Where can I find an example?
> > >
> >
> > The library docs have some examples in them.
> > See:
> > http://boost.org/libs/iostreams/doc/index.html
> >
> > Navigate to the Quick Reference and click on the
> > "basic_zlib_decompressor" filter link. At the bottom of the page you
> > will see an example.
> >
>
>
> I am having problems in compiling the example in the boost iostreams
> exmaple:
>
> code:
>
> #include <fstream>
> #include <iostream>
> #include <boost/iostreams/filtering_streambuf.hpp>
> #include <boost/iostreams/copy.hpp>
> #include <boost/iostreams/filter/zlib.hpp>
>
> int main()
> {
>     using namespace std;
>
>     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);
> }
>
> error:
>
> g++ -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"src/boostTest.d"
> -MT"src/boostTest.d" -o"src/boostTest.o" "../src/boostTest.cpp"
> ../src/boostTest.cpp:18:2: warning: no newline at end of file
> ../src/boostTest.cpp: In function 'int main()':
> ../src/boostTest.cpp:13: error: 'filtering_streambuf' was not declared
> in this scope
> ../src/boostTest.cpp:13: error: 'input' was not declared in this scope
> ../src/boostTest.cpp:13: error: 'in' was not declared in this scope
> ../src/boostTest.cpp:14: error: 'zlib_decompressor' was not declared
> in this scope
> make: *** [src/boostTest.o] Error 1
>
>
> >
> >
> > _______________________________________________
> > Boost-users mailing list
> > Boost-users_at_[hidden]
> > http://lists.boost.org/mailman/listinfo.cgi/boost-users
> >
> _______________________________________________
> Boost-users mailing list
> Boost-users_at_[hidden]
> http://lists.boost.org/mailman/listinfo.cgi/boost-users
>

-- 
Regards,
Ron Lau
Life is wonderful because there are variables and unknowns.