我正在尝试在ubuntu 16.04中安装vowpal_wabbit。
错误：
./libvw.a(search.o): In function `Search::setup(vw&)':
search.cc:(.text+0xa5f8): undefined reference to `boost::program_options::options_description::options_description(std::string const&, unsigned int, unsigned int)'
search.cc:(.text+0xaafe): undefined reference to `boost::program_options::abstract_variables_map::operator[](std::string const&) const'
search.cc:(.text+0xac0e): undefined reference to `boost::program_options::abstract_variables_map::operator[](std::string const&) const'
search.cc:(.text+0xad20): undefined reference to `boost::program_options::abstract_variables_map::operator[](std::string const&) const'
search.cc:(.text+0xadda): undefined reference to `boost::program_options::abstract_variables_map::operator[](std::string const&) const'
search.cc:(.text+0xae94): undefined reference to `boost::program_options::abstract_variables_map::operator[](std::string const&) const'
./libvw.a(search.o):search.cc:(.text+0xafaa): more undefined references to `boost::program_options::abstract_variables_map::operator[](std::string const&) const' follow
./libvw.a(search_meta.o): In function `SelectiveBranchingMT::initialize(Search::search&, unsigned long&, boost::program_options::variables_map&)':
search_meta.cc:(.text+0x7645): undefined reference to `boost::program_options::options_description::options_description(std::string const&, unsigned int, unsigned int)'
./libvw.a(search_sequencetask.o): In function `SequenceSpanTask::initialize(Search::search&, unsigned long&, boost::program_options::variables_map&)':
search_sequencetask.cc:(.text+0x14ab): undefined reference to `boost::program_options::options_description::options_description(std::string const&, unsigned int, unsigned int)'
./libvw.a(search_sequencetask.o): In function `ArgmaxTask::initialize(Search::search&, unsigned long&, boost::program_options::variables_map&)':
search_sequencetask.cc:(.text+0x2a02): undefined reference to `boost::program_options::options_description::options_description(std::string const&, unsigned int, unsigned int)'
./libvw.a(search_dep_parser.o): In function `DepParserTask::initialize(Search::search&, unsigned long&, boost::program_options::variables_map&)':
search_dep_parser.cc:(.text+0x4328): undefined reference to `boost::program_options::options_description::options_description(std::string const&, unsigned int, unsigned int)'
./libvw.a(search_dep_parser.o): In function `void Search::check_option<unsigned int>(unsigned int&, vw&, boost::program_options::variables_map&, char const*, bool, bool (*)(unsigned int, unsigned int), char const*, char const*)':
search_dep_parser.cc:(.text._ZN6Search12check_optionIjEEvRT_R2vwRN5boost15program_options13variables_mapEPKcbPFbS1_S1_ESA_SA_[_ZN6Search12check_optionIjEEvRT_R2vwRN5boost15program_options13variables_mapEPKcbPFbS1_S1_ESA_SA_]+0x1ea): undefined reference to `boost::program_options::abstract_variables_map::operator[](std::string const&) const'
./libvw.a(search_entityrelationtask.o): In function `EntityRelationTask::initialize(Search::search&, unsigned long&, boost::program_options::variables_map&)':
search_entityrelationtask.cc:(.text+0x33f7): undefined reference to `boost::program_options::options_description::options_description(std::string const&, unsigned int, unsigned int)'
./libvw.a(search_graph.o): In function `GraphTask::initialize(Search::search&, unsigned long&, boost::program_options::variables_map&)':
search_graph.cc:(.text+0x17aa): undefined reference to `boost::program_options::options_description::options_description(std::string const&, unsigned int, unsigned int)'
search_graph.cc:(.text+0x196c): undefined reference to `boost::program_options::abstract_variables_map::operator[](std::string const&) const'
./libvw.a(scorer.o): In function `scorer_setup(vw&)':
scorer.cc:(.text+0x1cd): undefined reference to `boost::program_options::options_description::options_description(std::string const&, unsigned int, unsigned int)'
scorer.cc:(.text+0x271): undefined reference to `boost::program_options::abstract_variables_map::operator[](std::string const&) const'
collect2: error: ld returned 1 exit status
Makefile:46: recipe for target 'vw' failed
make[1]: *** [vw] Error 1
make[1]: Leaving directory '/home/kapil/Projects/MachineLearning/vowpal_wabbit/vowpalwabbit'
Makefile:97: recipe for target 'vw' failed
make: *** [vw] Error 2
我按照存储库中提供的说明进行操作。我安装了libboost-program-options-dev，zlib1g-dev＆amp; libboost-python-dev。我试图先运行make，这会给出未定义的引用错误。然后我尝试在autogen.sh之前使用make脚本，但这也会导致相同的错误。我也试过使用像make BOOST_FLAGS=-lboost-program-options＆amp;这样的命令，但没有成功。 make BOOST_FLAGS=-lboost_options。我尝试使用clang++但是它提供了相同的输出。我检查过boost＆amp; boost_program-options＆amp;它们存在并且是最新版本。如何删除错误？
问题是，虽然我可以在ubuntu中使用ppa安装vowpalwabbit，但是当我尝试使用pip为python安装它时，它会给出相同的引用错误。我需要安装python版本。
答案 0 :(得分：1)
您收到的错误表明您没有安装libboost个开发库（更具体地说，libboost-program-options-dev）。从源代码构建libboost-program-options-dev的先决条件中列出了vw。您可以通过安装元软件包libboost-all-dev来安装所有 boost库+标头。
根据official instructions in the README.md file，无需在Ubuntu上运行autogen.sh（事实上，建议 不 默认情况下这样做是因为它会覆盖原来的Makefile，它可以正常工作。
以下是完整的Ubuntu说明（为方便起见，从github上的官方wiki转载）：
在Ubuntu / Debian / Mint上类似，以下序列应该用于构建github的最新版本：
apt-get install libboost-program-options-dev zlib1g-dev
apt-get install libboost-python-dev
git clone git://github.com/JohnLangford/vowpal_wabbit.git
cd vowpal_wabbit
make
make test # (optional)
make install
如果这些说明不适合您，请确保您没有对您的环境进行其他非标准更改。已知会导致问题的更改包括非标准LD_LIBRARY_PATH，LD_RPRELOAD或ldconfig更改，这些更改可能会导致链接器无法在标准位置找到库。