how to link zlib library
boost, c++, compression, zlib
Solution
You don't have a compiler problem; you have a linking problem.
Add `-lboost_iostreams` to the command line. You may need `-L/opt/lib` to specify a path. This should give you another linker error, looking for `zlib`. Then add `-lz`.
The final line will look like
mpic++ -o local ods_v2.0.cpp -I/opt/local/include -L/opt/lib -lboost_iostreams -lz
Problem
Hi I'm using boost and zlib filter to compress and decompress data. on the instruction of boost page, it is saying if the .cpp file depends on an external library, you'll have to build it from the source or link to a pre-built binary. I used mac port to install boost and zlib. I include the boost libarary as -I/opt/local/include my 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); } ``` I wonder how to link the pre-built zlib external libarary? it is giving me this compiling problem: ``` mpic++ -o local ods_v2.0.cpp -I/opt/local/include Undefined symbols for architecture x86_64: "boost::iostreams::zlib_error::check(int)", referenced from: long boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::write<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >(boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> >&, char const*, long) in ods_v2-DjDcji.o void boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::close<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >(boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> >&, std::_Ios_Openmode) in ods_v2-DjDcji.o void boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::close<boost::iostreams::non_blocking_adapter<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > > >(boost::iostreams::non_blocking_adapter<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >&, std::_Ios_Openmode) in ods_v2-DjDcji.o long boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::read<boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::peekable_source<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > > >(boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::peekable_source<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >&, char*, long) in ods_v2-DjDcji.o void boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::close<boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::peekable_source<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > > >(boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::peekable_source<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >&, std::_Ios_Openmode) in ods_v2-DjDcji.o "boost::iostreams::zlib::stream_end", referenced from: long boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::write<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >(boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> >&, char const*, long) in ods_v2-DjDcji.o void boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::close<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >(boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> >&, std::_Ios_Openmode) in ods_v2-DjDcji.o void boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::close<boost::iostreams::non_blocking_adapter<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > > >(boost::iostreams::non_blocking_adapter<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >&, std::_Ios_Openmode) in ods_v2-DjDcji.o long boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::read<boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::peekable_source<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > > >(boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::peekable_source<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >&, char*, long) in ods_v2-DjDcji.o void boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::close<boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::peekable_source<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > > >(boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::peekable_source<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >&, std::_Ios_Openmode) in ods_v2-DjDcji.o "boost::iostreams::zlib::sync_flush", referenced from: long boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::write<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >(boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> >&, char const*, long) in ods_v2-DjDcji.o void boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::close<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >(boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> >&, std::_Ios_Openmode) in ods_v2-DjDcji.o void boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::close<boost::iostreams::non_blocking_adapter<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > > >(boost::iostreams::non_blocking_adapter<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >&, std::_Ios_Openmode) in ods_v2-DjDcji.o long boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::read<boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::peekable_source<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > > >(boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::peekable_source<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >&, char*, long) in ods_v2-DjDcji.o void boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::close<boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::peekable_source<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > > >(boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::peekable_source<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >&, std::_Ios_Openmode) in ods_v2-DjDcji.o "boost::iostreams::zlib::default_strategy", referenced from: boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::make_params(int) in ods_v2-DjDcji.o "boost::iostreams::zlib::default_compression", referenced from: boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::make_params(int) in ods_v2-DjDcji.o "boost::iostreams::zlib::okay", referenced from: long boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::write<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >(boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> >&, char const*, long) in ods_v2-DjDcji.o void boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::close<boost::iostreams::non_blocking_adapter<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > > >(boost::iostreams::non_blocking_adapter<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >&, std::_Ios_Openmode) in ods_v2-DjDcji.o long boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::read<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >(boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> >&, char*, long) in ods_v2-DjDcji.o "boost::iostreams::zlib::deflated", referenced from: boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::make_params(int) in ods_v2-DjDcji.o "boost::iostreams::detail::gzip_footer::reset()", referenced from: long boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::write<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >(boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> >&, char const*, long) in ods_v2-DjDcji.o long boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::read<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >(boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> >&, char*, long) in ods_v2-DjDcji.o boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::basic_gzip_decompressor(int, int) in ods_v2-DjDcji.o "boost::iostreams::detail::gzip_footer::process(char)", referenced from: long boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::write<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >(boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> >&, char const*, long) in ods_v2-DjDcji.o long boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::read<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >(boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> >&, char*, long) in ods_v2-DjDcji.o "boost::iostreams::detail::gzip_header::reset()", referenced from: long boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::write<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >(boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> >&, char const*, long) in ods_v2-DjDcji.o long boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::read<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >(boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> >&, char*, long) in ods_v2-DjDcji.o boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::basic_gzip_decompressor(int, int) in ods_v2-DjDcji.o "boost::iostreams::detail::gzip_header::process(char)", referenced from: long boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::write<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >(boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> >&, char const*, long) in ods_v2-DjDcji.o long boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::read<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >(boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> >&, char*, long) in ods_v2-DjDcji.o "boost::iostreams::detail::zlib_base::after(char const*&, char*&, bool)", referenced from: long boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::write<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >(boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> >&, char const*, long) in ods_v2-DjDcji.o void boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::close<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >(boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> >&, std::_Ios_Openmode) in ods_v2-DjDcji.o void boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::close<boost::iostreams::non_blocking_adapter<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > > >(boost::iostreams::non_blocking_adapter<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >&, std::_Ios_Openmode) in ods_v2-DjDcji.o long boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::read<boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::peekable_source<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > > >(boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::peekable_source<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >&, char*, long) in ods_v2-DjDcji.o void boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::close<boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::peekable_source<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > > >(boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::peekable_source<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >&, std::_Ios_Openmode) in ods_v2-DjDcji.o "boost::iostreams::detail::zlib_base::reset(bool, bool)", referenced from: boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::close_impl() in ods_v2-DjDcji.o boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::impl::impl<boost::iostreams::zlib_params>(int, boost::iostreams::zlib_params const&) in ods_v2-DjDcji.o boost::detail::shared_count::shared_count<boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::impl>(boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::impl*) in ods_v2-DjDcji.o boost::detail::sp_counted_impl_p<boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::impl>::dispose() in ods_v2-DjDcji.o "boost::iostreams::detail::zlib_base::before(char const*&, char const*, char*&, char*)", referenced from: long boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::write<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >(boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> >&, char const*, long) in ods_v2-DjDcji.o void boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::close<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >(boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> >&, std::_Ios_Openmode) in ods_v2-DjDcji.o void boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::close<boost::iostreams::non_blocking_adapter<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > > >(boost::iostreams::non_blocking_adapter<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >&, std::_Ios_Openmode) in ods_v2-DjDcji.o long boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::read<boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::peekable_source<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > > >(boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::peekable_source<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >&, char*, long) in ods_v2-DjDcji.o void boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::close<boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::peekable_source<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > > >(boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::peekable_source<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >&, std::_Ios_Openmode) in ods_v2-DjDcji.o "boost::iostreams::detail::zlib_base::do_init(boost::iostreams::zlib_params const&, bool, void* (*)(void*, unsigned int, unsigned int), void (*)(void*, void*), void*)", referenced from: boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::impl::impl<boost::iostreams::zlib_params>(int, boost::iostreams::zlib_params const&) in ods_v2-DjDcji.o "boost::iostreams::detail::zlib_base::xinflate(int)", referenced from: long boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::write<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >(boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> >&, char const*, long) in ods_v2-DjDcji.o void boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::close<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >(boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> >&, std::_Ios_Openmode) in ods_v2-DjDcji.o void boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::close<boost::iostreams::non_blocking_adapter<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > > >(boost::iostreams::non_blocking_adapter<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >&, std::_Ios_Openmode) in ods_v2-DjDcji.o long boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::read<boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::peekable_source<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > > >(boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::peekable_source<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >&, char*, long) in ods_v2-DjDcji.o void boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::close<boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::peekable_source<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > > >(boost::iostreams::basic_gzip_decompressor<std::allocator<char> >::peekable_source<boost::iostreams::detail::linked_streambuf<char, std::char_traits<char> > >&, std::_Ios_Openmode) in ods_v2-DjDcji.o "boost::iostreams::detail::zlib_base::zlib_base()", referenced from: boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::impl::impl<boost::iostreams::zlib_params>(int, boost::iostreams::zlib_params const&) in ods_v2-DjDcji.o "boost::iostreams::detail::zlib_base::~zlib_base()", referenced from: boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::impl::impl<boost::iostreams::zlib_params>(int, boost::iostreams::zlib_params const&) in ods_v2-DjDcji.o boost::detail::shared_count::shared_count<boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::impl>(boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::impl*) in ods_v2-DjDcji.o boost::detail::sp_counted_impl_p<boost::iostreams::symmetric_filter<boost::iostreams::detail::zlib_decompressor_impl<std::allocator<char> >, std::allocator<char> >::impl>::dispose() in ods_v2-DjDcji.o ld: symbol(s) not found for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation) make: *** [local] Error 1 ``` and how to build and link boost and zlib library on unix cluster? thanks.