when I MAKE word_count, the error is below, what's wrong?
g++ -m64 -I/home/platform/hadoop/include wordcount.cpp -Wall -L/home/platform/hadoop/lib/native -lhadooppipes -lhadooputils -lpthread -lcrypto -lssl -g -O2 -o wordcount
/home/vipshop/platform/hadoop/lib/native/libhadooppipes.a(HadoopPipes.cc.o): In function HadoopPipes::BinaryProtocol::getPassword(std::basic_string<char, std::char_traits<char>, std::allocator<char> >&)':
(.text._ZN11HadoopPipes14BinaryProtocol11getPasswordERSs[HadoopPipes::BinaryProtocol::getPassword(std::basic_string<char, std::char_traits<char>, std::allocator<char> >&)]+0x258): undefined reference tostd::basic_ostream >& std::__ostream_insert >(std::basic_ostream >&, char const*, long)'
/home/vipshop/platform/hadoop/lib/native/libhadooppipes.a(HadoopPipes.cc.o): In function HadoopPipes::BinaryProtocol::getPassword(std::basic_string<char, std::char_traits<char>, std::allocator<char> >&)':
(.text._ZN11HadoopPipes14BinaryProtocol11getPasswordERSs[HadoopPipes::BinaryProtocol::getPassword(std::basic_string<char, std::char_traits<char>, std::allocator<char> >&)]+0x2a4): undefined reference tostd::ctype::_M_widen_init() const'
collect2: ld returned 1 exit status
make: *** [wordcount] Error 1
Related
After looking ant trying all links on the web i just can't figure what is wrong.
g++ version :
g++ (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0
This is my compilation line :
/usr/bin/g++ -fdiagnostics-color=always -Wall -std=c++11 -DSTATIC_CONCPP -I/home/vagrant/cpp/mysql-connector-cpp/include/ -I/home/vagrant/cpp/mysql-connector-cpp/include/mysqlx/ -I/home/vagrant/cpp/mysql-connector-cpp/common/ -I/home/vagrant/cpp/boost/ -I/home/vagrant/cpp/mysql-connector-cpp/build/cdk/protocol/mysqlx/protobuf -g /home/vagrant/cpp/mysql_conn_app/main.cpp /home/vagrant/cpp/mysql-connector-cpp/build/libmysqlcppconn8-static.a -lssl -lcrypto -lpthread -lresolv -o /home/vagrant/cpp/mysql_conn_app/main.exe
This is the error:
/tmp/ccUnnhKN.o: In function `mysqlx::abi2::r0::string::traits<char>::from_str(mysqlx::abi2::r0::string&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
/home/vagrant/cpp/mysql-connector-cpp/include/mysqlx/devapi/common.h:220: undefined reference to `mysqlx::abi2::r0::string::Impl::from_utf8(mysqlx::abi2::r0::string&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
/tmp/ccUnnhKN.o: In function `mysqlx::abi2::r0::string::traits<char>::to_str[abi:cxx11](mysqlx::abi2::r0::string const&)':
/home/vagrant/cpp/mysql-connector-cpp/include/mysqlx/devapi/common.h:225: undefined reference to `mysqlx::abi2::r0::string::Impl::to_utf8[abi:cxx11](mysqlx::abi2::r0::string const&)'
/tmp/ccUnnhKN.o: In function `mysqlx::abi2::r0::SessionSettings::SessionSettings(mysqlx::abi2::r0::string const&)':
/home/vagrant/cpp/mysql-connector-cpp/include/mysqlx/devapi/settings.h:526: undefined reference to `mysqlx::abi2::r0::common::Settings_impl::set_from_uri(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
/home/vagrant/cpp/mysql-connector-cpp/build/libmysqlcppconn8-static.a(libcdk_proto_mysqlx_protocol.cc.o): In function `cdk::protocol::mysqlx::log_handler_init()':
./build/cdk/protocol/mysqlx/./cdk/protocol/mysqlx/protocol.cc:131: undefined reference to `google::protobuf::SetLogHandler(void (*)(google::protobuf::LogLevel, char const*, int, std::string const&))'
/home/vagrant/cpp/mysql-connector-cpp/build/libmysqlcppconn8-static.a(libcdk_proto_mysqlx_protocol.cc.o): In function `cdk::protocol::mysqlx::Protocol_server::snd_Ok(cdk::foundation::string const&)':
./build/cdk/protocol/mysqlx/./build/cdk/protocol/mysqlx/protobuf/mysqlx.pb.h:947: undefined reference to `google::protobuf::internal::ArenaStringPtr::Set(google::protobuf::internal::ArenaStringPtr::EmptyDefault, std::string&&, google::protobuf::Arena*)'
/home/vagrant/cpp/mysql-connector-cpp/build/libmysqlcppconn8-static.a(libcdk_proto_mysqlx_protocol.cc.o): In function `cdk::protocol::mysqlx::Protocol_server::snd_Error(unsigned short, cdk::foundation::string
....
what is wrong here ?
also when adding "-D_GLIBCXX_USE_CXX11_ABI=0" as suggested here:
still not working
/usr/bin/g++ -fdiagnostics-color=always -Wall -std=c++11 -D_GLIBCXX_USE_CXX11_ABI=0 -DSTATIC_CONCPP -I/home/vagrant/cpp/mysql-connector-cpp/include/ -I/home/vagrant/cpp/mysql-connector-cpp/include/mysqlx/ -I/home/vagrant/cpp/mysql-connector-cpp/common/ -I/home/vagrant/cpp/boost/ -I/home/vagrant/cpp/mysql-connector-cpp/build/cdk/protocol/mysqlx/protobuf -g /home/vagrant/cpp/mysql_conn_app/main.cpp /home/vagrant/cpp/mysql-connector-cpp/build/libmysqlcppconn8-static.a -lssl -lcrypto -lpthread -lresolv -o /home/vagrant/cpp/mysql_conn_app/main.exe
gives :
/home/vagrant/cpp/mysql-connector-cpp/build/libmysqlcppconn8-static.a(libcdk_proto_mysqlx_protocol.cc.o): In function `cdk::protocol::mysqlx::log_handler_init()':
./build/cdk/protocol/mysqlx/./cdk/protocol/mysqlx/protocol.cc:131: undefined reference to `google::protobuf::SetLogHandler(void (*)(google::protobuf::LogLevel, char const*, int, std::string const&))'
/home/vagrant/cpp/mysql-connector-cpp/build/libmysqlcppconn8-static.a(libcdk_proto_mysqlx_protocol.cc.o): In function `cdk::protocol::mysqlx::Protocol_server::snd_Ok(cdk::foundation::string const&)':
./build/cdk/protocol/mysqlx/./build/cdk/protocol/mysqlx/protobuf/mysqlx.pb.h:947: undefined reference to `google::protobuf::internal::ArenaStringPtr::Set(google::protobuf::internal::ArenaStringPtr::EmptyDefault, std::string&&, google::protobuf::Arena*)'
/home/vagrant/cpp/mysql-connector-cpp/build/libmysqlcppconn8-static.a(libcdk_proto_mysqlx_protocol.cc.o): In function `cdk::protocol::mysqlx::Protocol_server::snd_Error(unsigned short, cdk::foundation::string const&)':
./build/cdk/protocol/mysqlx/./build/cdk/protocol/mysqlx/protobuf/mysqlx.pb.h:1146: undefined reference to `google::protobuf::internal::ArenaStringPtr::Set(google::protobuf::internal::ArenaStringPtr::EmptyDefault, std::string&&, google::protobuf::Arena*)'
/home/vagrant/cpp/mysql-connector-cpp/build/libmysqlcppconn8-static.a(libcdk_proto_mysqlx_protocol.cc.o): In function `cdk::protocol::mysqlx::Expr_builder_base::set_call(cdk::protocol::mysqlx::api::Db_obj const&)':
./build/cdk/protocol/mysqlx/./build/cdk/protocol/mysqlx/protobuf/mysqlx_expr.pb.h:2562: undefined reference to `google::protobuf::internal::ArenaStringPtr::Set(google::protobuf::internal::ArenaStringPtr::EmptyDefault, std::string&&, google::protobuf::Arena*)'
adding protobuf + -D_GLIBCXX_USE_CXX11_ABI=0 same error:
/usr/bin/g++ -fdiagnostics-color=always -Wall -std=c++11 -D_GLIBCXX_USE_CXX11_ABI=0 -DSTATIC_CONCPP -I/home/vagrant/cpp/mysql-connector-cpp/include/ -I/home/vagrant/cpp/mysql-connector-cpp/include/mysqlx/ -I/home/vagrant/cpp/mysql-connector-cpp/common/ -I/home/vagrant/cpp/boost/ -I/home/vagrant/cpp/mysql-connector-cpp/build/cdk/protocol/mysqlx/protobuf -g /home/vagrant/cpp/mysql_conn_app/main.cpp /home/vagrant/cpp/mysql-connector-cpp/build/libmysqlcppconn8-static.a /home/vagrant/cpp/mysql-connector-cpp/build/cdk/protocol/mysqlx/protobuf/protobuf-3.19.4/cmake/libprotobufd.a /home/vagrant/cpp/mysql-connector-cpp/build/cdk/protocol/mysqlx/protobuf/protobuf-3.19.4/cmake/libprotobuf-lited.a /home/vagrant/cpp/mysql-connector-cpp/build/cdk/protocol/mysqlx/protobuf/protobuf-3.19.4/cmake/libprotocd.a -lssl -lcrypto -lpthread -lresolv -o /home/vagrant/cpp/mysql_conn_app/main.exe
gives :
/home/vagrant/cpp/mysql-connector-cpp/build/libmysqlcppconn8-static.a(libcdk_proto_mysqlx_protocol.cc.o): In function `cdk::protocol::mysqlx::log_handler_init()':
./build/cdk/protocol/mysqlx/./cdk/protocol/mysqlx/protocol.cc:131: undefined reference to `google::protobuf::SetLogHandler(void (*)(google::protobuf::LogLevel, char const*, int, std::string const&))'
/home/vagrant/cpp/mysql-connector-cpp/build/libmysqlcppconn8-static.a(libcdk_proto_mysqlx_protocol.cc.o): In function `cdk::protocol::mysqlx::Protocol_server::snd_Ok(cdk::foundation::string const&)':
./build/cdk/protocol/mysqlx/./build/cdk/protocol/mysqlx/protobuf/mysqlx.pb.h:947: undefined reference to `google::protobuf::internal::ArenaStringPtr::Set(google::protobuf::internal::ArenaStringPtr::EmptyDefault, std::string&&, google::protobuf::Arena*)'
/home/vagrant/cpp/mysql-connector-cpp/build/libmysqlcppconn8-static.a(libcdk_proto_mysqlx_protocol.cc.o): In function `cdk::protocol::mysqlx::Protocol_server::snd_Error(unsigned short, cdk::foundation::string const&)':
./build/cdk/protocol/mysqlx/./build/cdk/protocol/mysqlx/protobuf/mysqlx.pb.h:1146: undefined reference to `google::protobuf::internal::ArenaStringPtr::Set(google::protobuf::internal::ArenaStringPtr::EmptyDefault, std::string&&, google::protobuf::Arena*)'
/home/vagrant/cpp/mysql-connector-cpp/build/libmysqlcppconn8-static.a(libcdk_proto_mysqlx_protocol.cc.o): In function `cdk::protocol::mysqlx::Expr_builder_base::set_call(cdk::protocol::mysqlx::api::Db_obj const&)':
./build/cdk/protocol/mysqlx/./build/cdk/protocol/mysqlx/protobuf/mysqlx_expr.pb.h:2562: undefined reference to `google::protobuf::internal::ArenaStringPtr::Set(google::protobuf::internal::ArenaStringPtr::EmptyDefault, std::string&&, google::protobuf::Arena*)'
./build/cdk/protocol/mysqlx/./build/cdk/protocol/mysqlx/protobuf/mysqlx_expr.pb.h:2631: undefined reference to `google::protobuf::internal::ArenaStringPtr::Set(google::protobuf::internal::ArenaStringPtr::EmptyDefault, std::string&&, google::protobuf::Arena*)'
/home/vagrant/cpp/mysql-connector-cpp/build/libmysqlcppconn8-static.a(libcdk_proto_mysqlx_protocol.cc.o): In function `cdk::protocol::mysqlx::Expr_builder_base::var(cdk::foundation::string const&)':
./build/cdk/protocol/mysqlx/./build/cdk/protocol/mysqlx/protobuf/mysqlx_expr.pb.h:2013: undefined reference to `google::protobuf::internal::ArenaStringPtr::Set(google::protobuf::internal::ArenaStringPtr::EmptyDefault, std::string&&, google::protobuf::Arena*)'
/home/vagrant/cpp/mysql-connector-cpp/build/libmysqlcppconn8-static.a(libcdk_proto_mysqlx_protocol.cc.o):./build/cdk/protocol/mysqlx/./build/cdk/protocol/mysqlx/protobuf/mysqlx_expr.pb.h:2874: more undefined references to `google::protobuf::internal::ArenaStringPtr::Set(google::protobuf::internal::ArenaStringPtr::EmptyDefault, std::string&&, google::protobuf::Arena*)' follow
/home/vagrant/cpp/mysql-connector-cpp/build/libmysqlcppconn8-static.a(libcdk_proto_mysqlx_protocol.cc.o): In function `void google::protobuf::internal::ArenaStringPtr::Set<google::protobuf::internal::ArenaStringPtr::EmptyDefault>(google::protobuf::internal::ArenaStringPtr::EmptyDefault, char const*, google::protobuf::Arena*)':
./build/cdk/protocol/mysqlx/./cdk/extra/protobuf/protobuf-3.19.4/src/google/protobuf/arenastring.h:200: undefined reference to `google::protobuf::internal::ArenaStringPtr::Set(google::protobuf::internal::ArenaStringPtr::EmptyDefault, std::string const&, google::protobuf::Arena*)'
My server is Ubuntu,code is:
#include <mysqlx/xdevapi.h>
#include <iostream>
using namespace mysqlx;
int main()
{
const char *url = "mysqlx://root#127.0.0.1";
std::cout << "Create session on " << url <<std::endl;
Session sess(url);
Schema sch = sess.getSchema("IM.User");
}
when I compile it,got this:
g++ dbtest.cpp -g -std=c++11 -L/usr/lib64/ -lmysqlcppconn8-static -I/usr/include/mysqlx -lssl -lpthread -lcrypto -o dbtest.o
----------------------------------------------------------------------
/tmp/cccFQIzq.o: In function `mysqlx::string::string(char const*)':
/usr/include/mysqlx/devapi/common.h:100: undefined reference to `mysqlx::string::Impl::from_utf8(mysqlx::string&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
/tmp/cccFQIzq.o: In function `mysqlx::string::operator std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >() const':
/usr/include/mysqlx/devapi/common.h:115: undefined reference to `mysqlx::string::Impl::to_utf8[abi:cxx11](mysqlx::string const&)'
/tmp/cccFQIzq.o: In function `mysqlx::SessionSettings::SessionSettings(mysqlx::string const&)':
/usr/include/mysqlx/devapi/settings.h:339: undefined reference to `mysqlx::common::Settings_impl::set_from_uri(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
collect2: error: ld returned 1 exit status
Am I lost something?
My code won't compile and I don't understand the cryptic output from the compiler. Can you spot the error?
main.cpp
#include <vector>
#include <string>
int main() {
std::vector <std::string> myVar;
return 0;
}
Then in bash:
$ gcc main.cpp
/tmp/ccvmVBRq.o: In function `__gnu_cxx::new_allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >::deallocate(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*, unsigned long)':
main.cpp:(.text._ZN9__gnu_cxx13new_allocatorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEE10deallocateEPS6_m[_ZN9__gnu_cxx13new_allocatorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEE10deallocateEPS6_m]+0x1c): undefined reference to `operator delete(void*)'
/tmp/ccvmVBRq.o: In function `void std::_Destroy<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*)':
main.cpp:(.text._ZSt8_DestroyINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEvPT_[_ZSt8_DestroyINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEvPT_]+0x14): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'
/tmp/ccvmVBRq.o:(.data.rel.local.DW.ref.__gxx_personality_v0[DW.ref.__gxx_personality_v0]+0x0): undefined reference to `__gxx_personality_v0'
collect2: error: ld returned 1 exit status
This is C++ code, so you have to compile it with g++. Try:
$ g++ main.cpp
I have installed opencv recently . I am trying to do a bit if image processing using opencv and cuda. but I am getting an error like this
nvcc -o reference_hw1 reference_main.o student_func.o compare.o reference_calc.o -arch=sm_20 -Xcompiler -Wall -Xcompiler -Wextra -m64 -L /usr/lib
reference_main.o: In function `preProcess(uchar4**, unsigned char**, uchar4**, unsigned char**, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
reference_main.cpp:(.text+0xc4): undefined reference to `cv::imread(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int)'
reference_main.cpp:(.text+0x1b7): undefined reference to `cv::_OutputArray::_OutputArray(cv::Mat&)'
reference_main.cpp:(.text+0x1cd): undefined reference to `cv::_InputArray::_InputArray(cv::Mat const&)'
reference_main.cpp:(.text+0x1ea): undefined reference to `cv::cvtColor(cv::_InputArray const&, cv::_OutputArray const&, int, int)'
reference_main.o: In function `postProcess(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, unsigned char*)':
reference_main.cpp:(.text+0x45a): undefined reference to `cv::_InputArray::_InputArray(cv::Mat const&)'
reference_main.cpp:(.text+0x4a2): undefined reference to `cv::imwrite(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cv::_InputArray const&, std::vector<int, std::allocator<int> > const&)'
reference_main.o: In function `generateReferenceImage(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::basic_string<char, std::char_traits<char>, std::allocator<char> >)':
reference_main.cpp:(.text+0x5b2): undefined reference to `cv::imread(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int)'
reference_main.cpp:(.text+0x5d4): undefined reference to `cv::_InputArray::_InputArray(cv::Mat const&)'
reference_main.cpp:(.text+0x5ee): undefined reference to `cv::imwrite(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cv::_InputArray const&, std::vector<int, std::allocator<int> > const&)'
reference_main.o: In function `cv::Mat::~Mat()':
reference_main.cpp:(.text._ZN2cv3MatD2Ev[_ZN2cv3MatD5Ev]+0x39): undefined reference to `cv::fastFree(void*)'
reference_main.o: In function `cv::Mat::operator=(cv::Mat const&)':
reference_main.cpp:(.text._ZN2cv3MataSERKS0_[cv::Mat::operator=(cv::Mat const&)]+0x111): undefined reference to `cv::Mat::copySize(cv::Mat const&)'
reference_main.o: In function `cv::Mat::create(int, int, int)':
reference_main.cpp:(.text._ZN2cv3Mat6createEiii[cv::Mat::create(int, int, int)]+0x96): undefined reference to `cv::Mat::create(int, int const*, int)'
reference_main.o: In function `cv::Mat::release()':
reference_main.cpp:(.text._ZN2cv3Mat7releaseEv[cv::Mat::release()]+0x47): undefined reference to `cv::Mat::deallocate()'
compare.o: In function `compareImages(std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, bool, double, double)':
compare.cpp:(.text+0x4e): undefined reference to `cv::imread(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int)'
compare.cpp:(.text+0x6c): undefined reference to `cv::imread(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int)'
compare.cpp:(.text+0x8c): undefined reference to `cv::operator-(cv::Mat const&, cv::Mat const&)'
compare.cpp:(.text+0xa5): undefined reference to `cv::abs(cv::MatExpr const&)'
compare.cpp:(.text+0x15a): undefined reference to `cv::Mat::reshape(int, int) const'
compare.cpp:(.text+0x15f): undefined reference to `cv::noArray()'
compare.cpp:(.text+0x17b): undefined reference to `cv::_InputArray::_InputArray(cv::Mat const&)'
compare.cpp:(.text+0x1a9): undefined reference to `cv::minMaxLoc(cv::_InputArray const&, double*, double*, cv::Point_<int>*, cv::Point_<int>*, cv::_InputArray const&)'
compare.cpp:(.text+0x20c): undefined reference to `cv::operator-(cv::Mat const&, cv::Scalar_<double> const&)'
compare.cpp:(.text+0x22d): undefined reference to `cv::operator*(cv::MatExpr const&, double)'
compare.cpp:(.text+0x2d2): undefined reference to `cv::Mat::reshape(int, int) const'
compare.cpp:(.text+0x33d): undefined reference to `cv::_InputArray::_InputArray(cv::Mat const&)'
compare.cpp:(.text+0x375): undefined reference to `cv::imwrite(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, cv::_InputArray const&, std::vector<int, std::allocator<int> > const&)'
collect2: ld returned 1 exit status
make: *** [student] Error 1
I don't know why the error is like this. My Makefile is
NVCC= nvcc
###################################
# These are the default install #
# locations on most linux distros #
###################################
OPENCV_LIBPATH=/usr/lib
OPENCV_INCLUDEPATH=/usr/local/include
OPENCV_TROUBLE=
CUDA_INCLUDEPATH=/usr/local/cuda/include
NVCC_OPTS = -arch=sm_20 -Xcompiler -Wall -Xcompiler -Wextra -m64
GCC_OPTS = -Wall -Wextra -m64
student: reference_main.o student_func.o compare.o reference_calc.o Makefile
$(NVCC) -o reference_hw1 reference_main.o student_func.o compare.o reference_calc.o $(NVCC_OPTS) -L $(OPENCV_LIBPATH) $(OPENCV_TROUBLE)
reference_main.o: reference_main.cpp timer.h utils.h reference_calc.cpp compare.cpp reference_hw1.cpp
g++ -c reference_main.cpp $(GCC_OPTS) -I $(OPENCV_INCLUDEPATH) -I $(CUDA_INCLUDEPATH) $(OPENCV_LIBPATH) $(OPENCV_TROUBLE)
student_func.o: student_func.cu utils.h
nvcc -c student_func.cu $(NVCC_OPTS)
compare.o: compare.cpp compare.h
g++ -c compare.cpp -I $(CUDA_INCLUDEPATH) $(GCC_OPTS) -I $(OPENCV_INCLUDEPATH) $(OPENCV_LIBPATH) $(OPENCV_TROUBLE)
reference_calc.o: reference_calc.cpp reference_calc.h
g++ -c reference_calc.cpp -I $(CUDA_INCLUDEPATH) $(GCC_OPTS) -I $(OPENCV_INCLUDEPATH) $(OPENCV_LIBPATH) $(OPENCV_TROUBLE)
clean:
rm -f *.o *.png hw
In the directory of /usr/local/include
there are two folders opencv and opencv2 , so everything is fine according to the arrangements .
Now how to solve the problem ?
yesterday whole day got used in solution for this problem.
Please anybody help me.. Thanks in advance...
I tried all the methods.....
I have the following code which i m trying to compile:
#include <boost/filesystem/convenience.hpp>
#include <boost/foreach.hpp>
#include <boost/range.hpp>
#include <iostream>
int main(int, char**)
{
namespace bf = boost::filesystem;
BOOST_FOREACH(bf::path path,
boost::make_iterator_range(
bf::recursive_directory_iterator(bf::path("/home")),
bf::recursive_directory_iterator())) {
std::cout << path.string() << std::endl;
}
return 0;
}
My boost library is in /home/foo/include . and the include files are actually there.
when i run the following:
g++ -I/home/foo/include/ test.cc
I get the following error. how can i resolve this. what should i follow?
/tmp/ccvDmFNL.o(.text+0x502): In function `__static_initialization_and_destruction_0(int, int)':
: undefined reference to `boost::system::get_system_category()'
/tmp/ccvDmFNL.o(.text+0x51b): In function `__static_initialization_and_destruction_0(int, int)':
: undefined reference to `boost::system::get_generic_category()'
/tmp/ccvDmFNL.o(.text+0x534): In function `__static_initialization_and_destruction_0(int, int)':
: undefined reference to `boost::system::get_generic_category()'
/tmp/ccvDmFNL.o(.text+0x54d): In function `__static_initialization_and_destruction_0(int, int)':
: undefined reference to `boost::system::get_generic_category()'
/tmp/ccvDmFNL.o(.text+0x566): In function `__static_initialization_and_destruction_0(int, int)':
: undefined reference to `boost::system::get_system_category()'
/tmp/ccvDmFNL.o(.gnu.linkonce.t._ZN5boost10filesystem24basic_directory_iteratorINS0_10basic_pathISsNS0_11path_traitsEEEE6m_initERKS4_+0x2e): In function `boost::filesystem::basic_directory_iterator<boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> >::m_init(boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> const&)':
: undefined reference to `boost::filesystem::detail::not_found_error()'
/tmp/ccvDmFNL.o(.gnu.linkonce.t._ZN5boost10filesystem24basic_directory_iteratorINS0_10basic_pathISsNS0_11path_traitsEEEE6m_initERKS4_+0xbe): In function `boost::filesystem::basic_directory_iterator<boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> >::m_init(boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> const&)':
: undefined reference to `boost::filesystem::detail::dir_itr_first(void*&, void*&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::basic_string<char, std::char_traits<char>, std::allocator<char> >&, boost::filesystem::file_status&, boost::filesystem::file_status&)'
/tmp/ccvDmFNL.o(.gnu.linkonce.t._ZN5boost6system10error_codeC1Ev+0x14): In function `boost::system::error_code::error_code()':
: undefined reference to `boost::system::get_system_category()'
/tmp/ccvDmFNL.o(.gnu.linkonce.t._ZN5boost10filesystem24basic_directory_iteratorINS0_10basic_pathISsNS0_11path_traitsEEEE9incrementEv+0xde): In function `boost::filesystem::basic_directory_iterator<boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> >::increment()':
: undefined reference to `boost::filesystem::detail::dir_itr_increment(void*&, void*&, std::basic_string<char, std::char_traits<char>, std::allocator<char> >&, boost::filesystem::file_status&, boost::filesystem::file_status&)'
/tmp/ccvDmFNL.o(.gnu.linkonce.t._ZN5boost10filesystem6statusINS0_10basic_pathISsNS0_11path_traitsEEEEENS_9enable_ifINS0_13is_basic_pathIT_EENS0_11file_statusEE4typeERKS7_+0x34): In function `boost::enable_if<boost::filesystem::is_basic_path<boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> >, boost::filesystem::file_status>::type boost::filesystem::status<boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> >(boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> const&)':
: undefined reference to `boost::filesystem::detail::status_api(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, boost::system::error_code&)'
/tmp/ccvDmFNL.o(.gnu.linkonce.t._ZN5boost10filesystem6detail11dir_itr_impINS0_10basic_pathISsNS0_11path_traitsEEEED1Ev+0x1d): In function `boost::filesystem::detail::dir_itr_imp<boost::filesystem::basic_path<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, boost::filesystem::path_traits> >::~dir_itr_imp()':
: undefined reference to `boost::filesystem::detail::dir_itr_close(void*&, void*&)'
collect2: ld returned 1 exit status
EDIT:
Now i tried:
g++ -I/home/foo/include/ test.cc -lboost_system -lboost_filesystem
and get the following error:
/usr/bin/ld: cannot find -lboost_system
collect2: ld returned 1 exit status
I have the libboost_system-gcc34-1_38.so within
/home/foo/lib
how can I point to that?
from gcc man page:
-Ldir Add directory dir to the list of directories to be searched for -l.
So, is it that you are missing -L/home/foo/lib to the command line?
Your code compiled properly on my linux machine (Ubuntu 10.04, boost-filesystem 1.40) with the following command:
g++ test.cpp -lboost_filesystem
or
g++ test.cpp -lboost_system -lboost_filesystem
It gave me compile errors with g++ test.cpp -lboost_system
You must tell the compiler/linker where your libraries are as well, if they are not in the default location. For this you must use the -L flag to the compiler:
g++ -I/home/y/include/ test.cc -L/home/foo/lib -lboost_system -lboost_filesystem
Add -lboost_system (-lboost_system-mt if you're going to be threading) and -lboost_filesystem (-lboost_filesystem-mt if you're going to be threading) to the cmdline, before any input files.
Your boost libraries appear to be decorated with the suffix gcc34-1_38. Are you using gcc 3.4? Is your boost library on the library path? If not you may need to add the the path to your boost libraries using the -L flag to g++ or you can add the path to the LD_LIBRARY_PATH environment variable. In any case, you can link to your boost libraries by using -lboost_system-gcc34-1_38 and -lboost_filesystem-gcc34-1_38.