Can't find the executable

[ctwelsh]

Errors:

pi@raspberrypi:~/MCServer/Release$ make
Scanning dependencies of target jsoncpp
[ 1%] Building CXX object lib/jsoncpp/CMakeFiles/jsoncpp.dir/src/lib_json/json_writer.cpp.o
cc1plus: error: unrecognized command line option ‘-std=c++11’
cc1plus: error: unrecognized command line option ‘-std=c++11’
lib/jsoncpp/CMakeFiles/jsoncpp.dir/build.make:54: recipe for target 'lib/jsoncpp/CMakeFiles/jsoncpp.dir/src/lib_json/json_writer.cpp.o' failed
make[2]: *** [lib/jsoncpp/CMakeFiles/jsoncpp.dir/src/lib_json/json_writer.cpp.o] Error 1
CMakeFiles/Makefile2:75: recipe for target 'lib/jsoncpp/CMakeFiles/jsoncpp.dir/all' failed
make[1]: *** [lib/jsoncpp/CMakeFiles/jsoncpp.dir/all] Error 2
Makefile:113: recipe for target 'all' failed
make: *** [all] Error 2