<fstream>: Importing as a header unit leads to error C2079: undefined class 'std::basic_ofstream<char,std::char_traits<char>>'#3112Description orikama openedon Sep 19, 2022 After updating to Visual Studio 17.4.0 Preview 2.0 using <fstream> as a header unit leads to compilation error. ...
/tmp/ccO5zfdR.o(.text+0x26): undefined reference to `std::basic_ifstream<char,std::char_traits<char> >::basic_ifstream[in-charge](char const*, std::_Ios_Openmode)' /tmp/ccO5zfdR.o(.text+0x38): undefined reference to `std::basic_ifstream<char,std...
compiling this code with gcc into a shared lib for mingw/i686 and linking with lld fails: #include <fstream> #include <iostream> #include <ostream> int foo() { std::ofstream file("/tmp/a.log"); return 0; } $ i686-w64-mingw32-g++ -fuse-ld...
error LNK2019: unresolved external symbol "__declspec(dllimport) public: class std::basic_string<char,struct std::char_traits<char>, error LNK2019: unresolved external symbol "__declspec(dllimport) public: void __thiscall error LNK2026: module unsafe for SAFESEH image._ error LNK2038: mismatch...
but I changed it do a static library and removed the dll export things. Then I want to use this library in a C++ project.I wrapped an extern "C" around the include of the header files to eliminate name mangling. However, I got linker errors for the library functions (undefined ...