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directive-else.mk revision 1.5 
      1 # $NetBSD: directive-else.mk,v 1.5 2020/11/13 08:35:34 rillig Exp $
      2 #
      3 # Tests for the .else directive.
      4 
      5 # The .else directive does not take any arguments.
      6 # As of 2020-08-29, make doesn't warn about this.
      7 .if 0
      8 .  warning must not be reached
      9 .else 123
     10 .  info ok
     11 .endif
     12 
     13 .if 1
     14 .  info ok
     15 .else 123
     16 .  warning must not be reached
     17 .endif
     18 
     19 # An .else without a corresponding .if is an error.
     20 .else
     21 
     22 # Accidental extra .else directives are detected too.
     23 .if 0
     24 .  warning must not be reached
     25 .else
     26 .  info ok
     27 .else
     28 .  info After an extra .else, everything is skipped.
     29 .endif
     30 
     31 # An .else may have a comment.  This comment does not count as an argument,
     32 # therefore no parse error.
     33 .if 0
     34 .else # comment
     35 .endif
     36 
     37 # A variable expression does count as an argument, even if it is empty.
     38 # XXX: This should be a parse error.
     39 .if 0
     40 .else ${:U}
     41 .endif
     42 
     43 all:
     44 	@:;
     45