readelf --debug-dump=decodedline ~/Documents/personalProjects/debugger/build/hello.tsk
^ This command is super good for translating from line numbers to addresses. It doesn't tell you what the symbols are but just converts the line number to an address in memory.
This info is also in the debug_line part of dwarfdump (you just need to scroll down to find the starting line numbers):
dwarfdump ~/Documents/personalProjects/debugger/build/hello.tsk | less
This section has information about the variables in the program and has the line numbers where each variable is defined.