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depsrc-usebefore.mk revision 1.7 
      1  1.7  rillig # $NetBSD: depsrc-usebefore.mk,v 1.7 2021/12/28 14:22:51 rillig Exp $
      2  1.1  rillig #
      3  1.3  rillig # Tests for the special source .USEBEFORE in dependency declarations,
      4  1.3  rillig # which allows to prepend common commands to other targets.
      5  1.6  rillig #
      6  1.6  rillig # See also:
      7  1.6  rillig #	.USE
      8  1.6  rillig #	depsrc-use.mk
      9  1.1  rillig 
     10  1.7  rillig # Before make.h 1.280 from 2021-12-28, a .USEBEFORE target was accidentally
     11  1.7  rillig # regarded as a candidate for the main target.  On the other hand, a .USE
     12  1.7  rillig # target was not.
     13  1.7  rillig not-a-main-candidate: .USEBEFORE
     14  1.7  rillig 
     15  1.3  rillig all: action directly
     16  1.1  rillig 
     17  1.3  rillig first: .USEBEFORE
     18  1.5  rillig 	@echo first 1		# Using ${.TARGET} here would expand to "action"
     19  1.5  rillig 	@echo first 2		# Using ${.TARGET} here would expand to "action"
     20  1.3  rillig 
     21  1.3  rillig second: .USEBEFORE
     22  1.5  rillig 	@echo second 1
     23  1.5  rillig 	@echo second 2
     24  1.3  rillig 
     25  1.5  rillig # It is possible but uncommon to have a .USEBEFORE target with no commands.
     26  1.4  rillig # This may happen as the result of expanding a .for loop.
     27  1.3  rillig empty: .USEBEFORE
     28  1.3  rillig 
     29  1.5  rillig # It is possible but uncommon to directly make a .USEBEFORE target.
     30  1.3  rillig directly: .USEBEFORE
     31  1.3  rillig 	@echo directly
     32  1.3  rillig 
     33  1.3  rillig action: second first empty
     34