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directive-export.mk revision 1.3 
      1 # $NetBSD: directive-export.mk,v 1.3 2020/10/29 17:27:12 rillig Exp $
      2 #
      3 # Tests for the .export directive.
      4 
      5 # TODO: Implementation
      6 
      7 INDIRECT=	indirect
      8 VAR=		value $$ ${INDIRECT}
      9 
     10 # A variable is exported using the .export directive.
     11 # During that, its value is expanded, just like almost everywhere else.
     12 .export VAR
     13 .if ${:!env | grep '^VAR'!} != "VAR=value \$ indirect"
     14 .  error
     15 .endif
     16 
     17 # Undefining a variable that has been exported implicitly removes it from
     18 # the environment of all child processes.
     19 .undef VAR
     20 .if ${:!env | grep '^VAR' || true!} != ""
     21 .  error
     22 .endif
     23 
     24 all:
     25 	@:;
     26