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302da1a3d3
Lots of new unit-tests increase code coverage. Lots of refactoring, cleanup and simlpification to reduce code size. Fixes for Bug 223564 and 245807 Updates to dirdeps.mk and meta2deps.py
49 lines
1.2 KiB
Makefile
49 lines
1.2 KiB
Makefile
# $NetBSD: var-op-append.mk,v 1.7 2020/10/30 20:36:33 rillig Exp $
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#
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# Tests for the += variable assignment operator, which appends to a variable,
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# creating it if necessary.
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# Appending to an undefined variable is possible.
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# The variable is created, and no extra space is added before the value.
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VAR+= one
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.if ${VAR} != "one"
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. error
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.endif
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# Appending to an existing variable adds a single space and the value.
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VAR+= two
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.if ${VAR} != "one two"
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. error
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.endif
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# Appending an empty string nevertheless adds a single space.
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VAR+= # empty
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.if ${VAR} != "one two "
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. error
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.endif
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# Variable names may contain '+', and this character is also part of the
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# '+=' assignment operator. As far as possible, the '+' is interpreted as
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# part of the assignment operator.
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#
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# See Parse_DoVar
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C++= value
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.if ${C+} != "value" || defined(C++)
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. error
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.endif
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# Try out how often the variable name is expanded when appending to a
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# nonexistent variable.
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# As of 2020-10-30, that's two times.
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# XXX: That's one time too often.
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# See Var_Append, the call to Var_Set.
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.MAKEFLAGS: -dv
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VAR.${:U\$\$\$\$\$\$\$\$}+= dollars
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.MAKEFLAGS: -d0
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.if ${VAR.${:U\$\$\$\$}} != "dollars"
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. error
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.endif
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all:
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@:;
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