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1b65f0bd2b
o allow env var MAKE_OBJDIR_CHECK_WRITABLE=no to skip writable checks in InitObjdir. Explicit .OBJDIR target always allows read-only directory. o Fix building and unit-tests on non-BSD. o More code cleanup and refactoring. o More unit tests
42 lines
1.1 KiB
Makefile
42 lines
1.1 KiB
Makefile
# $NetBSD: cond-cmp-numeric.mk,v 1.4 2020/11/08 22:56:16 rillig Exp $
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#
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# Tests for numeric comparisons in .if conditions.
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.MAKEFLAGS: -dc
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# The ${:U...} on the left-hand side is necessary for the parser.
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# Even if strtod(3) parses "INF" as +Infinity, make does not accept this
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# since it is not really a number; see TryParseNumber.
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.if !(${:UINF} > 1e100)
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. error
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.endif
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# Neither is NaN a number; see TryParseNumber.
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.if ${:UNaN} > NaN
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. error
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.endif
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# Since NaN is not parsed as a number, both operands are interpreted
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# as strings and are therefore equal. If they were parsed as numbers,
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# they would compare unequal, since NaN is unequal to any and everything,
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# including itself.
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.if !(${:UNaN} == NaN)
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. error
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.endif
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# The parsing code in CondParser_Comparison only performs a light check on
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# whether the operator is valid, leaving the rest of the work to the
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# evaluation functions EvalCompareNum and EvalCompareStr. Ensure that this
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# parse error is properly reported.
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#
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# XXX: The warning message does not mention the actual operator.
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.if 123 ! 123
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. error
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.else
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. error
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.endif
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all:
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@:;
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