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      1 # $NetBSD: make-exported.mk,v 1.7 2022/09/09 18:36:15 sjg Exp $
      2 #
      3 # As of 2020-08-09, the code in Var_Export is shared between the .export
      4 # directive and the .MAKE.EXPORTED variable.  This leads to non-obvious
      5 # behavior for certain variable assignments.
      6 
      7 -env=		make-exported-value-env
      8 -literal=	make-exported-value-literal
      9 UT_VAR=		${UNEXPANDED}
     10 
     11 # Before 2020-10-03, the following line took the code path of .export-env,
     12 # which was surprising behavior.  Since 2020-10-03 this line tries to
     13 # export the variable named "-env", but that is rejected because the
     14 # variable name starts with a hyphen.
     15 .MAKE.EXPORTED=		-env
     16 
     17 # Before 2020-10-03, if the value of .MAKE.EXPORTED started with "-literal",
     18 # make behaved like a mixture of .export-literal and a regular .export.
     19 #
     20 # Since 2020-10-03, the "variable" named "-literal" is not exported anymore,
     21 # it is just ignored since its name starts with '-'.
     22 .MAKE.EXPORTED=		-literal UT_VAR
     23 
     24 all:
     25 	@env | sort | ${EGREP} '^UT_|make-exported-value' || true
     26