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cond-op-or.mk revision 1.7 
      1 # $NetBSD: cond-op-or.mk,v 1.7 2021/12/09 23:57:19 rillig Exp $
      2 #
      3 # Tests for the || operator in .if conditions.
      4 
      5 .if 0 || 0
      6 .  error
      7 .endif
      8 
      9 .if !(1 || 0)
     10 .  error
     11 .endif
     12 
     13 .if !(0 || 1)
     14 .  error
     15 .endif
     16 
     17 .if !(1 || 1)
     18 .  error
     19 .endif
     20 
     21 
     22 # The right-hand side is not evaluated since the left-hand side is already
     23 # true.
     24 .if 1 || ${UNDEF}
     25 .endif
     26 
     27 # When an outer condition makes the '||' expression irrelevant, neither of its
     28 # operands must be evaluated.  This had been wrong in cond.c 1.283 from
     29 # 2021-12-09 and was reverted in cond.c 1.284 an hour later.
     30 .if 0 && (!defined(UNDEF) || ${UNDEF})
     31 .endif
     32 
     33 
     34 # The || operator may be abbreviated as |.  This is not widely known though
     35 # and is also not documented in the manual page.
     36 
     37 .if 0 | 0
     38 .  error
     39 .endif
     40 .if !(1 | 0)
     41 .  error
     42 .endif
     43 .if !(0 | 1)
     44 .  error
     45 .endif
     46 .if !(1 | 1)
     47 .  error
     48 .endif
     49 
     50 # There is no operator |||.
     51 .if 0 ||| 0
     52 .  error
     53 .endif
     54 
     55 all:
     56 	@:;
     57