77 lines
1.3 KiB
Makefile
77 lines
1.3 KiB
Makefile
# $NetBSD: cond-op-or.mk,v 1.8 2021/12/10 19:14:35 rillig Exp $
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#
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# Tests for the || operator in .if conditions.
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.if 0 || 0
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. error
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.endif
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.if !(1 || 0)
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. error
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.endif
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.if !(0 || 1)
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. error
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.endif
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.if !(1 || 1)
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. error
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.endif
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# The right-hand side is not evaluated since the left-hand side is already
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# true.
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.if 1 || ${UNDEF}
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.endif
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# When an outer condition makes the inner '||' condition irrelevant, neither
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# of its operands must be evaluated. This had been wrong in cond.c 1.283 from
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# 2021-12-09 and was reverted in cond.c 1.284 an hour later.
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.if 0 && (!defined(UNDEF) || ${UNDEF})
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.endif
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# Test combinations of outer '&&' with inner '||', to ensure that the operands
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# of the inner '||' is only evaluated if necessary.
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DEF= defined
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.if 0 && (${DEF} || ${UNDEF})
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.endif
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.if 0 && (!${DEF} || ${UNDEF})
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.endif
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.if 0 && (${UNDEF} || ${UNDEF})
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.endif
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.if 0 && (!${UNDEF} || ${UNDEF})
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.endif
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.if 1 && (${DEF} || ${UNDEF})
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.endif
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.if 1 && (!${DEF} || ${UNDEF})
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.endif
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.if 1 && (${UNDEF} || ${UNDEF})
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.endif
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.if 1 && (!${UNDEF} || ${UNDEF})
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.endif
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# The || operator may be abbreviated as |. This is not widely known though
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# and is also not documented in the manual page.
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.if 0 | 0
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. error
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.endif
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.if !(1 | 0)
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. error
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.endif
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.if !(0 | 1)
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. error
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.endif
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.if !(1 | 1)
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. error
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.endif
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# There is no operator |||.
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.if 0 ||| 0
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. error
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.endif
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all:
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@:;
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