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cond-op-and.mk revision 1.8 
      1 # $NetBSD: cond-op-and.mk,v 1.8 2023/08/15 21:27:09 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 # false.
     24 .if 0 && ${UNDEF}
     25 .endif
     26 
     27 # When an outer condition makes the inner '&&' condition irrelevant, neither
     28 # of its operands must be evaluated.
     29 #
     30 .if 1 || (${UNDEF} && ${UNDEF})
     31 .endif
     32 
     33 # Test combinations of outer '||' with inner '&&', to ensure that the operands
     34 # of the inner '&&' are only evaluated if necessary.
     35 DEF=	defined
     36 # expect+1: Malformed conditional (0 || (${DEF} && ${UNDEF})
     37 .if 0 || (${DEF} && ${UNDEF})
     38 .endif
     39 .if 0 || (!${DEF} && ${UNDEF})
     40 .endif
     41 # expect+1: Malformed conditional (0 || (${UNDEF} && ${UNDEF})
     42 .if 0 || (${UNDEF} && ${UNDEF})
     43 .endif
     44 # expect+1: Malformed conditional (0 || (!${UNDEF} && ${UNDEF})
     45 .if 0 || (!${UNDEF} && ${UNDEF})
     46 .endif
     47 .if 1 || (${DEF} && ${UNDEF})
     48 .endif
     49 .if 1 || (!${DEF} && ${UNDEF})
     50 .endif
     51 .if 1 || (${UNDEF} && ${UNDEF})
     52 .endif
     53 .if 1 || (!${UNDEF} && ${UNDEF})
     54 .endif
     55 
     56 
     57 # The && operator may be abbreviated as &.  This is not widely known though
     58 # and is also not documented in the manual page.
     59 
     60 .if 0 & 0
     61 .  error
     62 .endif
     63 .if 1 & 0
     64 .  error
     65 .endif
     66 .if 0 & 1
     67 .  error
     68 .endif
     69 .if !(1 & 1)
     70 .  error
     71 .endif
     72 
     73 # There is no operator &&&.
     74 # expect+1: Malformed conditional (0 &&& 0)
     75 .if 0 &&& 0
     76 .  error
     77 .endif
     78 
     79 # The '&&' operator must be preceded by whitespace, otherwise it becomes part
     80 # of the preceding bare word.  The condition is parsed as '"1&&" != "" && 1'.
     81 .if 1&& && 1
     82 .else
     83 .  error
     84 .endif
     85