``` simplecpp.cpp: In function ‘std::string simplecpp::convertCygwinToWindowsPath(const std::string&)’: simplecpp.cpp:2393:40: error: ‘startsWith_’ was not declared in this scope 2393 | if (cygwinPath.size() >= 11 && startsWith_(cygwinPath, "/cygdrive/")) { | ``` It works fine with "MSYS MINGW64".