Compilation error - Undefined reference

[lucalazzaroni]

I installed the library using vcpkg and all went correctly.
I'd like to use Visual Studio Code as Editor, but when I build I receive this error:

C:\Users\luca\AppData\Local\Temp\cc74cy7b.o: In function cpr::Response cpr::Get<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&)': C:/vcpkg/installed/x64-windows/include/cpr/api.h:39: undefined reference to cpr::Session::Session()'
C:/vcpkg/installed/x64-windows/include/cpr/api.h:41: undefined reference to cpr::Session::Get()' C:/vcpkg/installed/x64-windows/include/cpr/api.h:39: undefined reference to cpr::Session::~Session()'
C:/vcpkg/installed/x64-windows/include/cpr/api.h:39: undefined reference to cpr::Session::~Session()' C:\Users\luca\AppData\Local\Temp\cc74cy7b.o: In function void cpr::priv::set_option<std::__cxx11::basic_string<char, std::char_traits, std::allocator > >(cpr::Session&, std::__cxx11::basic_string<char, std::char_traits, std::allocator >&&)':
C:/vcpkg/installed/x64-windows/include/cpr/api.h:25: undefined reference to `cpr::Session::SetOption(std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&)'
collect2.exe: error: ld returned 1 exit status
The terminal process terminated with exit code: 1

I added these two lines in the tasks.json file to make it work but it seems that there's something that I'm missing:

"-I", "C:\\vcpkg\\installed\\x64-windows\\include", "-L", "C:\\vcpkg\\installed\\x64-windows\\lib -l cpr -l libcurl -l zlib"

The compiler I'm currently using is g++.
Thanks in advance for your help

[jungletek]

Undefined reference is a linker error, the linker can't find the libraries to link to your executable.

You need to tell it where (it|they) (is|are).

[COM8]

Please have a look at the documentation for how to link against vcpkg libraries without CMake:
https://github.com/microsoft/vcpkg/blob/master/docs/users/integration.md