CODEWITHSUNDEEP
makefilewildcardgnu-make
Pepijn
Pepijn

Reputation: 4253

How can you make a % wildcard make rule phony?

I have the following wildcard "programming" make rule that uploads a binary to a device. This obviously does not produce a real file, so should be marked phony. However, how do you mark a % percent wildcard rule phony?

%-tangnano-prog: %-tangnano.fs
    openFPGALoader -b tangnano $^

.PHONY: %-tangnano-prog clean all

The phony rule does not give any error whatever you put there, so hard to tell if it worked. But I believe it did not:

$ touch blinky-tangnano-prog
$ make blinky-tangnano-prog
make: 'blinky-tangnano-prog' is up to date.

Upvotes: 4

Views: 2584

Answers (1)

Renaud Pacalet
Renaud Pacalet

Reputation: 29222

Thee are basically two possibilities:

  1. You know in advance what %-tangnano-prog targets you can encounter. Just assign all their prefixes to a make variable, use make functions to compute the full target names and declare them as phony:

     P := blinky foo bar
 T := $(addsuffix -tangnano-prog,$(P))

 .PHONY: tangnano-prog $(T)

 tangnano-prog: $(T)

 %-tangnano-prog: %-tangnano.fs
     openFPGALoader -b tangnano $^

  2. You do not know in advance what targets you can encounter. Use the same Makefile but pass the list of target prefixes to build on the command line:

     $ make tangnano-prog P="blinky foo bar"

Upvotes: 4

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