makefile: find a position of word in a variable

Question

In my makefile, I need to make a variable assignment based on a command line variable value. for example, I do:

make var_1=xxx

where

Answer 1

FAB = macrofab
# NOTE: base starts at 1 instead of 0
none := 1
seeed := 1
oshpark := 2
macrofab := 2
pcbng := 3
#NOTE: String must end with a space for word function to work
SUFFIX_DRILLS := "txt xln drl "

.PHONY: gerber

gerber:
    @echo $(FAB) drill suffix is $(word $($(FAB)), $(SUFFIX_DRILLS))

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Output of make is: macrofab drill suffix is xln