Makefile:How to use cat command
 

I am making a Makefile where i am doing this

empty:=
comma:=,
space:= $(empty) $(empty)
text:=a b c
all:
text1=$(subst $(space),$(comma),$(text))

Now i want to write the value of text1 in a file result in current directory so i write this
$(cat >&result<<text1)
but this is not working. What code should i write to get the result.

Something like
to write the file, or
to append to the file.