40 lines
1.0 KiB
Makefile
40 lines
1.0 KiB
Makefile
# $NetBSD: cond-cmp-string.mk,v 1.3 2020/08/20 18:43:19 rillig Exp $
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#
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# Tests for string comparisons in .if conditions.
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# This is a simple comparison of string literals.
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# Nothing surprising here.
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.if "str" != "str"
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.error
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.endif
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# The right-hand side of the comparison may be written without quotes.
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.if "str" != str
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.error
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.endif
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# The left-hand side of the comparison must be enclosed in quotes.
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# This one is not enclosed in quotes and thus generates an error message.
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.if str != str
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.error
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.endif
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# The left-hand side of the comparison requires a defined variable.
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# The variable named "" is not defined, but applying the :U modifier to it
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# makes it "kind of defined" (see VAR_KEEP). Therefore it is ok here.
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.if ${:Ustr} != "str"
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.error
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.endif
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# Any character in a string literal may be escaped using a backslash.
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# This means that "\n" does not mean a newline but a simple "n".
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.if "string" != "\s\t\r\i\n\g"
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.error
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.endif
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# It is not possible to concatenate two string literals to form a single
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# string.
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.if "string" != "str""ing"
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.error
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.endif
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