Re: [Boost-users] help needed with bzip2/zlib with boost

11 Sep 2009

      Hi,

i had the very same problems yesterday (but i use the gcc compiler).
You have to build the iostream library new:

http://www.boost.org/doc/libs/1_39_0/libs/iostreams/doc/index.html

To do that you have to get to boost/libs/iostream/build in a cmd and 
launch bjam with following settings:
bjam "-sNO_COMPRESSION=0" "-sNO_ZLIB=0" "-sZLIB_SOURCE=C:\Dev\zlib"
   if you want to use bzip2 just define the variables for bzip2.
Of course you need the files from bzip2 and zlib.

If you have recompiled iostreams you get 2 dlls one for iostreams AND 
one for bzip2 or zlib link it with your programm (boost_iostreams AND 
bzip2 /zlib).

I hope it helps you,

SK

ChristinaDRS schrieb:
...
Hello,
I am trying to get the code below to compile in Visual Studios without luck.
I downloaded and built the seperate zlib and bzip2 libraries and renamed
them to:
libboost_zlib-vc90-mt-gd-1_39.lib 
libboost_bzip2-vc90-mt-gd-1_39.lib
because I was getting linking errors that I was missing thes elibs. but I
get a bunch of unresolved linking errors now.. any idea what I might be
doing wrong?
I am guessing they must be needed to be built actually by boost? Is there
any instructions on how to do this?
Thanks!!!
1>------ Build started: Project: BoostCompression, Configuration: Debug
Win32 ------ 
1>Linking... 
1>main.obj : error LNK2001: unresolved external symbol "int const
boost::iostreams::zlib::default_compression"
(?default_compression@zlib@iostreams@boost@@3HB) 
1>main.obj : error LNK2001: unresolved external symbol "int const
boost::iostreams::zlib::deflated" (?deflated@zlib@iostreams@boost@@3HB) 
1>main.obj : error LNK2001: unresolved external symbol "int const
boost::iostreams::zlib::default_strategy"
(?default_strategy@zlib@iostreams@boost@@3HB) 
1>main.obj : error LNK2019: unresolved external symbol "int __cdecl
test_main(int,char * * const)" (?test_main@@YAHHQAPAD@Z) referenced in
function "public: int __thiscall
boost::minimal_test::caller::operator()(void)"
(??Rcaller@minimal_test@boost@@QAEHXZ) 
1>main.obj : error LNK2019: unresolved external symbol "protected:
__thiscall boost::iostreams::detail::bzip2_base::~bzip2_base(void)"
(??1bzip2_base@detail@iostreams@boost@@IAE@XZ) referenced in function
"public: __thiscall boost::iostreams::detail::bzip2_compressor_impl::~bzip2_compressor_impl
...
(void)"
(??1?$bzip2_compressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAE@XZ) 
1>main.obj : error LNK2019: unresolved external symbol "protected:
__thiscall boost::iostreams::detail::zlib_base::~zlib_base(void)"
(??1zlib_base@detail@iostreams@boost@@IAE@XZ) referenced in function
__unwindfunclet$??0?$zlib_compressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAE@ABUzlib_params@23@@Z$0 
1>main.obj : error LNK2019: unresolved external symbol "protected:
__thiscall boost::iostreams::detail::zlib_base::zlib_base(void)"
(??0zlib_base@detail@iostreams@boost@@IAE@XZ) referenced in function
"public: __thiscall boost::iostreams::detail::zlib_compressor_impl::zlib_compressor_impl
...
(struct boost::iostreams::zlib_params const &)"
(??0?$zlib_compressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAE@ABUzlib_params@23@@Z) 
1>main.obj : error LNK2019: unresolved external symbol "protected: void
__thiscall boost::iostreams::detail::zlib_base::reset(bool,bool)"
(?reset@zlib_base@detail@iostreams@boost@@IAEX_N0@Z) referenced in function
"public: __thiscall boost::iostreams::detail::zlib_compressor_impl::~zlib_compressor_impl
...
(void)"
(??1?$zlib_compressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAE@XZ) 
1>main.obj : error LNK2019: unresolved external symbol "protected:
__thiscall boost::iostreams::detail::bzip2_base::bzip2_base(struct
boost::iostreams::bzip2_params const &)"
(??0bzip2_base@detail@iostreams@boost@@IAE@ABUbzip2_params@23@@Z) referenced
in function "public: __thiscall
boost::iostreams::detail::bzip2_compressor_impl
...
::bzip2_compressor_impl(struct
boost::iostreams::bzip2_params const &)"
(??0?$bzip2_compressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAE@ABUbzip2_params@23@@Z) 
1>main.obj : error LNK2019: unresolved external symbol "private: void
__thiscall boost::iostreams::detail::zlib_base::do_init(struct
boost::iostreams::zlib_params const &,bool,void * (__cdecl*)(void *,unsigned
int,unsigned int),void (__cdecl*)(void *,void *),void *)"
(?do_init@zlib_base@detail@iostreams@boost@@AAEXABUzlib_params@34@_NP6APAXPAXII@ZP6AX22@Z2@Z)
referenced in function "protected: void __thiscall
boost::iostreams::detail::zlib_base::init
...
(struct boost::iostreams::zlib_params const &,bool,struct
boost::iostreams::detail::zlib_allocator &)"
(??$init@V?$allocator@D@std@@@zlib_base@detail@iostreams@boost@@IAEXABUzlib_params@23@_NAAU?$zlib_allocator@V?$allocator@D@std@@V12@@123@@Z) 
1>main.obj : error LNK2001: unresolved external symbol "int const
boost::iostreams::zlib::stream_end" (?stream_end@zlib@iostreams@boost@@3HB) 
1>main.obj : error LNK2019: unresolved external symbol "public: static void
__cdecl boost::iostreams::zlib_error::check(int)"
(?check@zlib_error@iostreams@boost@@SAXH@Z) referenced in function "public:
bool __thiscall boost::iostreams::detail::zlib_compressor_impl::filter(char const * &,char const *,char * &,char
*,bool)"
(?filter@?$zlib_compressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAE_NAAPBDPBDAAPADPAD_N@Z) 
1>main.obj : error LNK2019: unresolved external symbol "protected: void
__thiscall boost::iostreams::detail::zlib_base::after(char const * &,char *
&,bool)" (?after@zlib_base@detail@iostreams@boost@@IAEXAAPBDAAPAD_N@Z)
referenced in function "public: bool __thiscall
boost::iostreams::detail::zlib_compressor_impl
...
::filter(char const * &,char const *,char * &,char *,bool)"
(?filter@?$zlib_compressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAE_NAAPBDPBDAAPADPAD_N@Z) 
1>main.obj : error LNK2019: unresolved external symbol "protected: int
__thiscall boost::iostreams::detail::zlib_base::deflate(int)"
(?deflate@zlib_base@detail@iostreams@boost@@IAEHH@Z) referenced in function
"public: bool __thiscall
boost::iostreams::detail::zlib_compressor_impl
...
::filter(char const * &,char const *,char * &,char *,bool)"
(?filter@?$zlib_compressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAE_NAAPBDPBDAAPADPAD_N@Z) 
1>main.obj : error LNK2001: unresolved external symbol "int const
boost::iostreams::zlib::no_flush" (?no_flush@zlib@iostreams@boost@@3HB) 
1>main.obj : error LNK2001: unresolved external symbol "int const
boost::iostreams::zlib::finish" (?finish@zlib@iostreams@boost@@3HB) 
1>main.obj : error LNK2019: unresolved external symbol "protected: void
__thiscall boost::iostreams::detail::zlib_base::before(char const * &,char
const *,char * &,char *)"
(?before@zlib_base@detail@iostreams@boost@@IAEXAAPBDPBDAAPADPAD@Z)
referenced in function "public: bool __thiscall
boost::iostreams::detail::zlib_compressor_impl
...
::filter(char const * &,char const *,char * &,char *,bool)"
(?filter@?$zlib_compressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAE_NAAPBDPBDAAPADPAD_N@Z) 
1>main.obj : error LNK2001: unresolved external symbol "int const
boost::iostreams::bzip2::stream_end"
(?stream_end@bzip2@iostreams@boost@@3HB) 
1>main.obj : error LNK2019: unresolved external symbol "public: static void
__cdecl boost::iostreams::bzip2_error::check(int)"
(?check@bzip2_error@iostreams@boost@@SAXH@Z) referenced in function "public:
bool __thiscall boost::iostreams::detail::bzip2_compressor_impl::filter(char const * &,char const *,char * &,char
*,bool)"
(?filter@?$bzip2_compressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAE_NAAPBDPBDAAPADPAD_N@Z) 
1>main.obj : error LNK2019: unresolved external symbol "protected: void
__thiscall boost::iostreams::detail::bzip2_base::after(char const * &,char *
&)" (?after@bzip2_base@detail@iostreams@boost@@IAEXAAPBDAAPAD@Z) referenced
in function "public: bool __thiscall
boost::iostreams::detail::bzip2_compressor_impl
...
::filter(char const * &,char const *,char * &,char *,bool)"
(?filter@?$bzip2_compressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAE_NAAPBDPBDAAPADPAD_N@Z) 
1>main.obj : error LNK2019: unresolved external symbol "protected: int
__thiscall boost::iostreams::detail::bzip2_base::compress(int)"
(?compress@bzip2_base@detail@iostreams@boost@@IAEHH@Z) referenced in
function "public: bool __thiscall
boost::iostreams::detail::bzip2_compressor_impl
...
::filter(char const * &,char const *,char * &,char *,bool)"
(?filter@?$bzip2_compressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAE_NAAPBDPBDAAPADPAD_N@Z) 
1>main.obj : error LNK2001: unresolved external symbol "int const
boost::iostreams::bzip2::run" (?run@bzip2@iostreams@boost@@3HB) 
1>main.obj : error LNK2001: unresolved external symbol "int const
boost::iostreams::bzip2::finish" (?finish@bzip2@iostreams@boost@@3HB) 
1>main.obj : error LNK2019: unresolved external symbol "protected: void
__thiscall boost::iostreams::detail::bzip2_base::before(char const * &,char
const *,char * &,char *)"
(?before@bzip2_base@detail@iostreams@boost@@IAEXAAPBDPBDAAPADPAD@Z)
referenced in function "public: bool __thiscall
boost::iostreams::detail::bzip2_compressor_impl
...
::filter(char const * &,char const *,char * &,char *,bool)"
(?filter@?$bzip2_compressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAE_NAAPBDPBDAAPADPAD_N@Z) 
1>main.obj : error LNK2019: unresolved external symbol "protected: int
__thiscall boost::iostreams::detail::zlib_base::inflate(int)"
(?inflate@zlib_base@detail@iostreams@boost@@IAEHH@Z) referenced in function
"public: bool __thiscall
boost::iostreams::detail::zlib_decompressor_impl
...
::filter(char const * &,char const *,char * &,char *,bool)"
(?filter@?$zlib_decompressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAE_NAAPBDPBDAAPADPAD_N@Z) 
1>main.obj : error LNK2001: unresolved external symbol "int const
boost::iostreams::zlib::sync_flush" (?sync_flush@zlib@iostreams@boost@@3HB) 
1>main.obj : error LNK2019: unresolved external symbol "protected: int
__thiscall boost::iostreams::detail::bzip2_base::decompress(void)"
(?decompress@bzip2_base@detail@iostreams@boost@@IAEHXZ) referenced in
function "public: bool __thiscall
boost::iostreams::detail::bzip2_decompressor_impl
...
::filter(char const * &,char const *,char * &,char *,bool)"
(?filter@?$bzip2_decompressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAE_NAAPBDPBDAAPADPAD_N@Z) 
1>main.obj : error LNK2019: unresolved external symbol "protected: void
__thiscall boost::iostreams::detail::bzip2_base::end(bool)"
(?end@bzip2_base@detail@iostreams@boost@@IAEX_N@Z) referenced in function
"public: void __thiscall
boost::iostreams::detail::bzip2_compressor_impl
...
::close(void)"
(?close@?$bzip2_compressor_impl@V?$allocator@D@std@@@detail@iostreams@boost@@QAEXXZ) 
1>main.obj : error LNK2019: unresolved external symbol "private: void
__thiscall boost::iostreams::detail::bzip2_base::do_init(bool,void *
(__cdecl*)(void *,int,int),void (__cdecl*)(void *,void *),void *)"
(?do_init@bzip2_base@detail@iostreams@boost@@AAEX_NP6APAXPAXHH@ZP6AX11@Z1@Z)
referenced in function "protected: void __thiscall
boost::iostreams::detail::bzip2_base::init
...
(bool,struct boost::iostreams::detail::bzip2_allocator
std::allocator<char>,class std::allocator<char> > &)"
(??$init@V?$allocator@D@std@@@bzip2_base@detail@iostreams@boost@@IAEX_NAAU?$bzip2_allocator@V?$allocator@D@std@@V12@@123@@Z) 
1>D:\Debug\BoostCompression.exe : fatal error LNK1120: 29 unresolved
externals
[main.cpp]
-------------------------------------------------------------------------------- 
#include <iostream> 
#include <sstream>
#include  
#include  
#include  
#include  
#include  
#include  
#include 
#include  
#include  
#include  
#include  
#include 
enum CompressionScheme 
{ 
    NO_COMPRESSION, 
    ZLIB_COMPRESSION, 
    BZIP2_COMPRESSION 
};
typedef boost::posix_time::ptime TimeType;
//---------------------------------------------------------------------------- 
void 
    add_compressor 
    ( 
        boost::iostreams::filtering_streambufboost::iostreams::output&
out, 
        CompressionScheme scheme 
    ) 
{ 
    switch (scheme) 
    { 
        case ZLIB_COMPRESSION: 
        { 
            out.push(boost::iostreams::zlib_compressor()); 
            break; 
        } 
        case BZIP2_COMPRESSION: 
        { 
            out.push(boost::iostreams::bzip2_compressor()); 
            break; 
        } 
        default: 
        { 
            break; 
        } 
    } 
}
//---------------------------------------------------------------------------- 
void 
    add_decompressor 
    ( 
        boost::iostreams::filtering_streambufboost::iostreams::input& in, 
        CompressionScheme scheme 
    ) 
{ 
    switch (scheme) 
    { 
        case ZLIB_COMPRESSION: 
        { 
            in.push(boost::iostreams::zlib_decompressor()); 
            break; 
        } 
        case BZIP2_COMPRESSION: 
        { 
            in.push(boost::iostreams::bzip2_decompressor()); 
            break; 
        } 
        default: 
        { 
            break; 
        } 
    } 
}
//---------------------------------------------------------------------------- 
std::string 
    compress 
    ( 
        const std::string& data 
    ) 
{ 
    std::stringstream compressed; 
    std::stringstream decompressed; 
    decompressed << data; 
    boost::iostreams::filtering_streambufboost::iostreams::input out; 
    out.push(boost::iostreams::zlib_compressor()); 
    out.push(decompressed); 
    boost::iostreams::copy(out, compressed); 
    return compressed.str(); 
}
//---------------------------------------------------------------------------- 
std::string 
    compress1 
    ( 
        const std::string& data, 
        CompressionScheme  scheme 
    ) 
{ 
    std::string compressed; 
    boost::iostreams::filtering_streambufboost::iostreams::output out; 
    add_compressor(out, scheme); 
    out.push(boost::iostreams::back_inserter(compressed)); 
    boost::iostreams::copy(boost::make_iterator_range(data), out); 
    return compressed; 
}
//---------------------------------------------------------------------------- 
void 
    compress2 
    ( 
        const std::string& data, 
        std::string&       buffer, 
        CompressionScheme  scheme 
    ) 
{ 
    buffer.clear(); 
    boost::iostreams::filtering_streambufboost::iostreams::output out; 
    add_compressor(out, scheme); 
    out.push(boost::iostreams::back_inserter(buffer)); 
    boost::iostreams::copy(boost::make_iterator_range(data), out); 
}
//---------------------------------------------------------------------------- 
std::string 
    decompress 
    ( 
        const std::string& data 
    ) 
{ 
    std::stringstream compressed; 
    std::stringstream decompressed; 
    compressed << data; 
    boost::iostreams::filtering_streambufboost::iostreams::input in; 
    in.push(boost::iostreams::zlib_decompressor()); 
    in.push(compressed); 
    boost::iostreams::copy(in, decompressed); 
    return decompressed.str(); 
}
//---------------------------------------------------------------------------- 
std::string 
    decompress1 
    ( 
        const std::string& data, 
        CompressionScheme  scheme 
    ) 
{ 
    boost::iostreams::filtering_streambufboost::iostreams::input in; 
    add_decompressor(in, scheme); 
    in.push(boost::make_iterator_range(data)); 
    std::string decompressed; 
    boost::iostreams::copy(in,
boost::iostreams::back_inserter(decompressed)); 
    return decompressed; 
}
//---------------------------------------------------------------------------- 
void 
    decompress2 
    ( 
        const std::string& buffer, 
        std::string&       data, 
        CompressionScheme  scheme 
    ) 
{ 
    boost::iostreams::filtering_streambufboost::iostreams::input in; 
    add_decompressor(in, scheme); 
    in.push(boost::make_iterator_range(buffer)); 
    data.clear(); 
    boost::iostreams::copy(in, boost::iostreams::back_inserter(data)); 
}
//---------------------------------------------------------------------------- 
TimeType 
    current_time 
    ( 
    ) 
{ 
    return boost::posix_time::microsec_clock::local_time(); 
}
//---------------------------------------------------------------------------- 
double 
    elapsed_seconds 
    ( 
        const TimeType& start_time 
    ) 
{ 
    static const double MSEC_PER_SEC = 1000.0; 
    TimeType end_time = current_time(); 
    boost::posix_time::time_duration elapsed  = end_time - start_time; 
    return boost::numeric_cast<double>(elapsed.total_milliseconds()) /
MSEC_PER_SEC; 
}
//---------------------------------------------------------------------------- 
int 
    test_main 
    ( 
        int   /*argc*/, 
        char* /*argv*/[] 
    ) 
{ 
    const int NUM_ITERATIONS = 10000; 
    const std::string send_data = "boo! how are you?"; 
    const std::string base_statement = "ALGO %|1$-3s|: %2% cycles took
%|3$0.3f| seconds";
double t0;
// Try original algorithm 
    { 
        const std::string time_statement = base_statement + " (Original)\n";
TimeType start_time = current_time();
std::string received_data; 
        for (int i = 0; i < NUM_ITERATIONS; ++i) 
        { 
            const std::string buffer = compress(send_data); 
            received_data = decompress(buffer); 
        } 
        BOOST_CHECK(send_data == received_data);
t0 = elapsed_seconds(start_time); 
        std::cout << (boost::format(time_statement) % 0 % NUM_ITERATIONS %
t0); 
    }
const std::string improvement_statement = base_statement + "
(Improvement %|4$5.2f| %%)\n";
typedef std::vector<CompressionScheme> SchemeVectorType; 
    const SchemeVectorType schemes =
boost::assign::list_of(NO_COMPRESSION)(ZLIB_COMPRESSION)(BZIP2_COMPRESSION);
// Try new algorithm 1 
    BOOST_FOREACH(CompressionScheme scheme, schemes) 
    { 
        TimeType start_time = current_time();
std::string received_data; 
        for (int i = 0; i < NUM_ITERATIONS; ++i) 
        { 
            const std::string buffer = compress1(send_data, scheme); 
            received_data = decompress1(buffer, scheme); 
        } 
        BOOST_CHECK(send_data == received_data);
const std::string algo = std::string("1,") +
boost::lexical_caststd::string(scheme);
const double e           = elapsed_seconds(start_time); 
        const double improvement = ((t0 - e) / t0) * 100.0; 
        std::cout << (boost::format(improvement_statement) % algo %
NUM_ITERATIONS % e % improvement); 
    }
// Try new algorithm 2 
    BOOST_FOREACH(CompressionScheme scheme, schemes) 
    { 
        TimeType start_time = current_time();
std::string received_data; 
        for (int i = 0; i < NUM_ITERATIONS; ++i) 
        { 
            std::string buffer; 
            compress2(send_data, buffer, scheme); 
            decompress2(buffer, received_data, scheme); 
        } 
        BOOST_CHECK(send_data == received_data);
const std::string algo = std::string("2,") +
boost::lexical_caststd::string(scheme);
const double e           = elapsed_seconds(start_time); 
        const double improvement = ((t0 - e) / t0) * 100.0; 
        std::cout << (boost::format(improvement_statement) % algo %
NUM_ITERATIONS % e % improvement); 
    }
return 0; 
}

Re: [Boost-users] help needed with bzip2/zlib with boost

Sebastian Korf