vs2019 meet LNK2001 while using external static library yaml-cpp.lib

Question

I built yaml-cpp staticly using vs2019 and got lib from path yaml-cpp-master\build\Release\yaml-cpp.lib, now I intend to add it to my own project, simple code follows:

#include <yaml-cpp/yaml.h>
#include <string>

using namespace std;

int main() {
    YAML::Node config = YAML::LoadFile("test.yaml");
    if (config["test1"]) {
        cout << config["test1"].as<string>() << endl;
    }
    return 0;
}

I've set my project properties following How to add static libraries to a Visual studio project, but I meet LNK2001 error and C4251 warning when building:

LNK2001 "__declspec(dllimport) public: __cdecl YAML::Node::Node(void)" (__imp_??0Node@YAML@@QEAA@XZ)

it seems the linker still wants dll...which is not my intention, is there any possible solutions?

Answer 1

You need to #define YAML_CPP_STATIC_DEFINE before you include any yaml-cpp files or in your project processor settings.