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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
50 lines
1.3 KiB
Makefile
50 lines
1.3 KiB
Makefile
# $NetBSD: var-recursive.mk,v 1.2 2020/10/31 13:45:00 rillig Exp $
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#
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# Tests for variable expressions that refer to themselves and thus
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# cannot be evaluated.
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TESTS= direct indirect conditional short
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# Since make exits immediately when it detects a recursive expression,
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# the actual tests are run in sub-makes.
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TEST?= # none
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.if ${TEST} == ""
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all:
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.for test in ${TESTS}
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@${.MAKE} -f ${MAKEFILE} TEST=${test} || :
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.endfor
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.elif ${TEST} == direct
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DIRECT= ${DIRECT} # Defining a recursive variable is not yet an error.
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. info still there # Therefore this line is printed.
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. info ${DIRECT} # But expanding the variable is an error.
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.elif ${TEST} == indirect
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# The chain of variables that refer to each other may be long.
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INDIRECT1= ${INDIRECT2}
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INDIRECT2= ${INDIRECT1}
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. info ${INDIRECT1}
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.elif ${TEST} == conditional
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# The variable refers to itself, but only in the branch of a condition that
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# is never satisfied and is thus not evaluated.
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CONDITIONAL= ${1:?ok:${CONDITIONAL}}
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. info ${CONDITIONAL}
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.elif ${TEST} == short
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# Short variable names can be expanded using the short-hand $V notation,
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# which takes a different code path in Var_Parse for parsing the variable
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# name. Ensure that these are checked as well.
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V= $V
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. info $V
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.else
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. error Unknown test "${TEST}"
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.endif
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all:
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