"unresolved external symbol" error when using yaml-cpp as a static library in Visual Studio 2013 #332
Description
I compiled yaml-cpp as a static library using Visual Studio Community 2013 and added the library to my project. This code works fine:
#include <yaml-cpp/yaml.h>
...
YAML::Node node = YAML::Load("{name: Brewers, city: Milwaukee}");
std::cout << node.size();
However, this code causes an error:
#include <yaml-cpp/yaml.h>
...
YAML::Node node = YAML::Load("{name: Brewers, city: Milwaukee}");
std::cout << node["name"];
Output is below:
1>------ Build started: Project: myapp, Configuration: Debug Win32 ------
1> Application.cpp
1>Application.obj : error LNK2001: unresolved external symbol "public: static class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > YAML::detail::node_data::empty_scalar" (?empty_scalar@node_data@detail@YAML@@2V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@A)
1>D:\code\cpp\myapp\Debug\myapp.exe : fatal error LNK1120: 1 unresolved externals
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
GCC compiles both codes successfully.