Make :) echo "$(x) plus $(y) equals $(shell echo "$x+$y" | bc)" I'm guessing this is the reason for the :) but to be clear for anyone else: Make is onl

Make :) echo "$(x) plus $(y) equals $(shell echo "$x+$y" | bc)" I'm guessing this is the reason for the :) but to be clear for anyone else: Make is only doing half of the work, whatever comes after "shell" is being passed to another executable, then make captures its stdout and interpolates that. The other executable is "sh" by default but can be changed to whatever.