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varname-dot-make-level.mk revision 1.3 
      1 # $NetBSD: varname-dot-make-level.mk,v 1.3 2024/06/01 18:44:05 rillig Exp $
      2 #
      3 # Tests for the special .MAKE.LEVEL variable, which informs about the
      4 # recursion level.  It is related to the environment variable MAKELEVEL,
      5 # even though they don't have the same value.
      6 
      7 level_1: .PHONY
      8 	@printf 'level 1: variable %s, env %s\n' ${.MAKE.LEVEL} "$$${.MAKE.LEVEL.ENV}"
      9 	@${MAKE} -f ${MAKEFILE} level_2
     10 
     11 level_2: .PHONY
     12 	@printf 'level 2: variable %s, env %s\n' ${.MAKE.LEVEL} "$$${.MAKE.LEVEL.ENV}"
     13 	@${MAKE} -f ${MAKEFILE} level_3
     14 
     15 level_3: .PHONY
     16 	@printf 'level 3: variable %s, env %s\n' ${.MAKE.LEVEL} "$$${.MAKE.LEVEL.ENV}"
     17 
     18 # The .unexport-env directive clears the environment, except for the
     19 # MAKE_LEVEL variable.
     20 .if make(level_2)
     21 .unexport-env
     22 .endif
     23