Maybe my YAML Version is out of date?
[ 73%] Building CXX object src/CMakeFiles/openxcom.dir/Mod/Polyline.cpp.o
/home/patrick/games/openxcom/OpenXcom/src/Mod/Mod.cpp: In member function ‘void OpenXcom::Mod::loadOffsetNode(const string&,
int&, const YAML::Node&, int, const string&, size_t, size_t) const’:
/home/patrick/games/openxcom/OpenXcom/src/Mod/Mod.cpp:730:128: error: ‘const class YAML::Node’ has no member named ‘Mark’
err << "Error for '" << parent << "': offset '" << offset << "' has incorrect value in set '" << set << "' at line " << node.Mark().line;
^
[ 74%] Building CXX object src/CMakeFiles/openxcom.dir/Mod/RuleAlienMission.cpp.o
[ 74%] Building CXX object src/CMakeFiles/openxcom.dir/Mod/RuleBaseFacility.cpp.o
[ 74%] Building CXX object src/CMakeFiles/openxcom.dir/Mod/RuleCommendations.cpp.o
make[2]: *** [src/CMakeFiles/openxcom.dir/Mod/Mod.cpp.o] Error 1
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [src/CMakeFiles/openxcom.dir/all] Error 2
make: *** [all] Error 2