CMakeFiles/minetest.dir/convert_json.cpp.o: In function `fetchJsonValue(std::string const&, std::vector<std::string, std::allocator<std::string> >*)':
convert_json.cpp:(.text+0x899): undefined reference to `Json::Value::Value(Json::Value&&)'
CMakeFiles/minetest.dir/serverlist.cpp.o: In function `ServerList::deleteEntry(Json::Value const&)':
serverlist.cpp:(.text+0x2397): undefined reference to `Json::Value::Value(Json::Value&&)'
serverlist.cpp:(.text+0x23dd): undefined reference to `Json::Value::Value(Json::Value&&)'
serverlist.cpp:(.text+0x2409): undefined reference to `Json::Value::Value(Json::Value&&)'
serverlist.cpp:(.text+0x2435): undefined reference to `Json::Value::Value(Json::Value&&)'
CMakeFiles/minetest.dir/serverlist.cpp.o:serverlist.cpp:(.text+0x246d): more undefined references to `Json::Value::Value(Json::Value&&)' follow
CMakeFiles/minetest.dir/serverlist.cpp.o: In function `ServerList::sendAnnounce(ServerList::AnnounceAction, unsigned short, std::vector<std::string, std::allocator<std::string> > const&, double, unsigned int, float, std::string const&, std::string const&, std::vector<ModSpec, std::allocator<ModSpec> > const&, bool)':
serverlist.cpp:(.text+0x44c2): undefined reference to `Json::Value::append(Json::Value&&)'
serverlist.cpp:(.text+0x4527): undefined reference to `Json::Value::append(Json::Value&&)'
serverlist.cpp:(.text+0x456a): undefined reference to `Json::Value::append(Json::Value&&)'
serverlist.cpp:(.text+0x45ad): undefined reference to `Json::Value::append(Json::Value&&)'
serverlist.cpp:(.text+0x45fe): undefined reference to `Json::Value::append(Json::Value&&)'
CMakeFiles/minetest.dir/serverlist.cpp.o:serverlist.cpp:(.text+0x4641): more undefined references to `Json::Value::append(Json::Value&&)' follow
CMakeFiles/minetest.dir/serverlist.cpp.o: In function `void std::vector<Json::Value, std::allocator<Json::Value> >::_M_insert_aux<Json::Value>(__gnu_cxx::__normal_iterator<Json::Value*, std::vector<Json::Value, std::allocator<Json::Value> > >, Json::Value&&)':
serverlist.cpp:(.text._ZNSt6vectorIN4Json5ValueESaIS1_EE13_M_insert_auxIIS1_EEEvN9__gnu_cxx17__normal_iteratorIPS1_S3_EEDpOT_[_ZNSt6vectorIN4Json5ValueESaIS1_EE13_M_insert_auxIIS1_EEEvN9__gnu_cxx17__normal_iteratorIPS1_S3_EEDpOT_]+0x32): undefined reference to `Json::Value::Value(Json::Value&&)'
serverlist.cpp:(.text._ZNSt6vectorIN4Json5ValueESaIS1_EE13_M_insert_auxIIS1_EEEvN9__gnu_cxx17__normal_iteratorIPS1_S3_EEDpOT_[_ZNSt6vectorIN4Json5ValueESaIS1_EE13_M_insert_auxIIS1_EEEvN9__gnu_cxx17__normal_iteratorIPS1_S3_EEDpOT_]+0x98): undefined reference to `Json::Value::Value(Json::Value&&)'
serverlist.cpp:(.text._ZNSt6vectorIN4Json5ValueESaIS1_EE13_M_insert_auxIIS1_EEEvN9__gnu_cxx17__normal_iteratorIPS1_S3_EEDpOT_[_ZNSt6vectorIN4Json5ValueESaIS1_EE13_M_insert_auxIIS1_EEEvN9__gnu_cxx17__normal_iteratorIPS1_S3_EEDpOT_]+0xd4): undefined reference to `Json::Value::Value(Json::Value&&)'
serverlist.cpp:(.text._ZNSt6vectorIN4Json5ValueESaIS1_EE13_M_insert_auxIIS1_EEEvN9__gnu_cxx17__normal_iteratorIPS1_S3_EEDpOT_[_ZNSt6vectorIN4Json5ValueESaIS1_EE13_M_insert_auxIIS1_EEEvN9__gnu_cxx17__normal_iteratorIPS1_S3_EEDpOT_]+0x100): undefined reference to `Json::Value::Value(Json::Value&&)'
serverlist.cpp:(.text._ZNSt6vectorIN4Json5ValueESaIS1_EE13_M_insert_auxIIS1_EEEvN9__gnu_cxx17__normal_iteratorIPS1_S3_EEDpOT_[_ZNSt6vectorIN4Json5ValueESaIS1_EE13_M_insert_auxIIS1_EEEvN9__gnu_cxx17__normal_iteratorIPS1_S3_EEDpOT_]+0x136): undefined reference to `Json::Value::Value(Json::Value&&)'
CMakeFiles/minetest.dir/serverlist.cpp.o:serverlist.cpp:(.text._ZNSt6vectorIN4Json5ValueESaIS1_EE13_M_insert_auxIIS1_EEEvN9__gnu_cxx17__normal_iteratorIPS1_S3_EEDpOT_[_ZNSt6vectorIN4Json5ValueESaIS1_EE13_M_insert_auxIIS1_EEEvN9__gnu_cxx17__normal_iteratorIPS1_S3_EEDpOT_]+0x15f): more undefined references to `Json::Value::Value(Json::Value&&)' follow
collect2: error: ld returned 1 exit status
src/CMakeFiles/minetest.dir/build.make:6122: recipe for target 'bin/minetest' failed
make[2]: *** [bin/minetest] Error 1
CMakeFiles/Makefile2:187: recipe for target 'src/CMakeFiles/minetest.dir/all' failed
make[1]: *** [src/CMakeFiles/minetest.dir/all] Error 2
Makefile:137: recipe for target 'all' failed
make: *** [all] Error 2