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https://github.com/freebsd/freebsd-src
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ee914ef902
Lots more unit tests and code cleanup
Relevant changes from ChangeLog
o job.c: Print -de error information when running multiple jobs
o var.c: only report error for unmatched regex subexpression
when linting (-dL) since we cannot tell when an unmatched
subexpression is an expected result.
reduce memory allocations in the modifiers ':D' and ':U'
reduce memory allocation and strlen calls in modifier ':from=to'
in the ':Q' modifier, only allocate memory if necessary
improve performance for LazyBuf
reduce debug logging and memory allocation for ${:U...}
reduce verbosity of the -dv debug logging for standard cases
fix double varname expansion in the variable modifier '::='
o var.c: avoid evaluating many modifiers in parse only mode
in strict mode (-dL) many variable references are parsed twice,
the first time just to report parse errors early, so we want to
avoid side effects and wasted effort to the extent possible.
47 lines
1.2 KiB
Makefile
47 lines
1.2 KiB
Makefile
# $NetBSD: var-op-append.mk,v 1.9 2021/04/04 10:13:09 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_Var
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C++= value
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.if ${C+} != "value" || defined(C++)
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. error
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.endif
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# Before var.c 1.793 from 2021-02-03, the variable name of a newly created
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# variable was expanded two times in a row, which was unexpected but
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# irrelevant in practice since variable names containing dollars lead to
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# strange side effects in several other places as well.
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.MAKEFLAGS: -dv
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VAR.${: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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