I downloaded and built the boost libraries (version 1.47.0) on Windows 7 (64bit) following the instructions here.
Now when I want to use the Boost::Filesystem library I can include the header file without issue and it compiles my code file. The problem arises at linking. I get the following errors;
main.obj : error LNK2019: unresolved external symbol "class boost::filesystem3::file_status __cdecl boost::filesystem3::detail::status(class boost::filesystem3::path const &,class boost::system::error_code *)" (?status@detail@filesystem3@boost@@YA?AVfile_status@23@AEBVpath@23@PEAVerror_code@system@3@@Z) referenced in function "bool __cdecl boost::filesystem3::exists(class boost::filesystem3::path const &)" (?exists@filesystem3@boost@@YA_NAEBVpath@12@@Z)
main.obj : error LNK2019: unresolved external symbol "private: static class std::codecvt<wchar_t,char,int> const * & __cdecl boost::filesystem3::path::wchar_t_codecvt_facet(void)" (?wchar_t_codecvt_facet@path@filesystem3@boost@@CAAEAPEBV?$codecvt@_WDH@std@@XZ) referenced in function "public: static class std::codecvt<wchar_t,char,int> const & __cdecl boost::filesystem3::path::codecvt(void)" (?codecvt@path@filesystem3@boost@@SAAEBV?$codecvt@_WDH@std@@XZ)
(amongst others)
It might be worth noting that when I first tried to build the project it said it couldn’t find the .lib file libboost_filesystem-vc100-mt-1_47.lib. I hadn’t specifically told it it needed that file so not sure how it figured that out? Either way I pointed the linker to the correct directory and then it gave the above errors.
Does anybody know how to fix this problem? Thanks.
Edit: I’m using VS2010 toolchain through eclipse CDT to build the system. The complete compile command is
cl /c /EHs /MD /Zi /I"C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\include" /I"C:\boost_1_47_0" /nologo <SOURCE_FILE>
and the linker command
link /debug /nologo /libpath:C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\lib\amd64 /libpath:C:\boost_1_47_0\stage\lib /libpath:C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\Lib\x64 /OUT:<EXE_NAME> <OBJECT_FILES>
Rebuild the Boost library with address-model=64 b2 command line switch. This builds 64 bit libraries.