Chciałem nauczyć się wykorzystywać obce biblioteki. Wybór na początek padł na boost. Niestety:
#include "boost/filesystem.hpp"
#include
namespace fs = boost::filesystem;
int main(){
if ( !fs::exists( "plik.txt" ) )
std::cout << "plik.txt istnieje" << std::endl;
}
g++ plik.cpp
/tmp/cctYlkxo.o: In function `__static_initialization_and_destruction_0(int, int)':
plik.cpp:(.text+0xa6): undefined reference to `boost::system::get_system_category()'
plik.cpp:(.text+0xb2): undefined reference to `boost::system::get_generic_category()'
plik.cpp:(.text+0xbe): undefined reference to `boost::system::get_generic_category()'
plik.cpp:(.text+0xca): undefined reference to `boost::system::get_generic_category()'
plik.cpp:(.text+0xd6): undefined reference to `boost::system::get_system_category()'
/tmp/cctYlkxo.o: In function `boost::system::error_code::error_code()':
plik.cpp:(.text._ZN5boost6system10error_codeC1Ev[boost]+0x17): undefined reference to `boost::system::get_system_category()'
/tmp/cctYlkxo.o: In function `boost::enable_if, std::allocator >, boost::filesystem::path_traits> >, bool>::type boost::filesystem::exists, std::allocator >, boost::filesystem::path_traits> >(boost::filesystem::basic_path, std::allocator >, boost::filesystem::path_traits> const&)':
plik.cpp:(.text._ZN5boost10filesystem6existsINS0_10basic_pathISsNS0_11path_traitsEEEEENS_9enable_ifINS0_13is_basic_pathIT_EEbE4typeERKS7_[boost]+0x46): undefined reference to `boost::filesystem::detail::status_api(std::basic_string, std::allocator > const&, boost::system::error_code&)'
collect2: ld returned 1 exit status
Co robię nie tak?