sublime ubuntu

{
"cmd" : ["gnome-terminal -x bash -c \"g++ $file_name -o ${file_base_name} -lm -Wall; ./${file_base_name}; exec bash\""],
"selector" :  "source.c, source.c++",
"shell":true,
"working_dir" : "$file_path"
}

Tools->Build System->new Build System