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depsrc-use.mk revision 1.6 
      1 # $NetBSD: depsrc-use.mk,v 1.6 2022/04/18 14:38:24 rillig Exp $
      2 #
      3 # Tests for the special source .USE in dependency declarations,
      4 # which allows to append common commands to other targets.
      5 #
      6 # See also:
      7 #	.USEBEFORE
      8 #	depsrc-usebefore.mk
      9 
     10 # Before make.h 1.280 from 2021-12-28, a .USEBEFORE target was accidentally
     11 # regarded as a candidate for the main target.  On the other hand, a .USE
     12 # target was not.
     13 not-a-main-candidate: .USE
     14 
     15 all: action directly
     16 
     17 first: .USE first-first first-second
     18 	@echo first 1		# Using ${.TARGET} here would expand to "action"
     19 	@echo first 2
     20 first-first: .USE
     21 	@echo first-first 1
     22 	@echo first-first 2
     23 first-second: .USE
     24 	@echo first-second 1
     25 	@echo first-second 2
     26 
     27 second: .USE
     28 	@echo second 1
     29 	@echo second 2
     30 
     31 # It's possible but uncommon to have a .USE target with no commands.
     32 # This may happen as the result of expanding a .for loop.
     33 empty: .USE
     34 
     35 # It's possible but uncommon to directly make a .USE target.
     36 directly: .USE
     37 	@echo directly
     38 
     39 action: first second empty
     40