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Diffstat (limited to 'unit-tests/opt-debug-var.mk')
| -rw-r--r-- | unit-tests/opt-debug-var.mk | 30 |
1 files changed, 26 insertions, 4 deletions
diff --git a/unit-tests/opt-debug-var.mk b/unit-tests/opt-debug-var.mk index 4d0ef9447324..5b0c5648ab55 100644 --- a/unit-tests/opt-debug-var.mk +++ b/unit-tests/opt-debug-var.mk @@ -1,9 +1,31 @@ -# $NetBSD: opt-debug-var.mk,v 1.1 2020/09/05 06:20:51 rillig Exp $ +# $NetBSD: opt-debug-var.mk,v 1.2 2022/01/23 16:09:38 rillig Exp $ # # Tests for the -dv command line option, which adds debug logging about # variable assignment and evaluation. -# TODO: Implementation +.MAKEFLAGS: -dv -all: - @:; +# expect: Global: ASSIGNED = value +ASSIGNED= value + +# TODO: Explain why the empty assignment "Global: SUBST = " is needed. +# expect: Global: SUBST = value +SUBST:= value + +.if defined(ASSIGNED) +.endif + +# The usual form of variable expressions is ${VAR}. The form $(VAR) is used +# less often as it can be visually confused with the shell construct for +# capturing the output of a subshell, which looks the same. +# +# In conditions, a call to the function 'empty' is syntactically similar to +# the form $(VAR), only that the initial '$' is the 'y' of 'empty'. +# +# expect: Var_Parse: y(ASSIGNED) (eval) +.if !empty(ASSIGNED) +.endif + +.MAKEFLAGS: -d0 + +all: .PHONY |