2c3632d14f
Lots of code refactoring, simplification and cleanup. Lots of new unit-tests providing much higher code coverage. All courtesy of rillig at netbsd. Other significant changes: o new read-only variable .SHELL which provides the path of the shell used to run scripts (as defined by the .SHELL target). o variable parsing detects more errors. o new debug option -dl: LINT mode, does the equivalent of := for all variable assignments so that file and line number are reported for variable parse errors.
32 lines
785 B
Makefile
32 lines
785 B
Makefile
# $NetBSD: varmod-l-name-to-value.mk,v 1.3 2020/08/25 22:25:05 rillig Exp $
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#
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# Tests for the :L modifier, which returns the variable name as the new value.
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# The empty variable name leads to an empty string.
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.if ${:L} != ""
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.error
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.endif
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# The variable name is converted into an expression with the variable name
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# "VARNAME" and the value "VARNAME".
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.if ${VARNAME:L} != "VARNAME"
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.error
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.endif
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# The value of the expression can be modified afterwards.
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.if ${VARNAME:L:S,VAR,,} != "NAME"
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.error
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.endif
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# The name of the expression is still the same as before. Using the :L
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# modifier, it can be restored.
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#
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# Hmmm, this can be used as a double storage or a backup mechanism.
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# Probably unintended, but maybe useful.
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.if ${VARNAME:L:S,VAR,,:L} != "VARNAME"
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.error
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.endif
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all:
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@:;
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