1 # http://www.gnu.org/software/make/manual/make.html#Syntax-of-Functions 2 ,:= , 3 empty:= 4 space:= $(empty) $(empty) 5 foo:= a b c 6 bar:= $(subst $(space),$,,$(foo)) 7 # bar is now `,abc' 8 # space in `,$(foo)' replaced with `$', which will be empty 9 10 test: 11 echo $(bar) 12
