1# $NetBSD: opt-debug-var.mk,v 1.3 2023/11/19 21:47:52 rillig Exp $ 2# 3# Tests for the -dv command line option, which adds debug logging about 4# variable assignment and evaluation. 5 6.MAKEFLAGS: -dv 7 8# expect: Global: ASSIGNED = value 9ASSIGNED= value 10 11# TODO: Explain why the empty assignment "Global: SUBST = " is needed. 12# expect: Global: SUBST = value 13SUBST:= value 14 15.if defined(ASSIGNED) 16.endif 17 18# The usual form of expressions is ${VAR}. The form $(VAR) is used 19# less often as it can be visually confused with the shell construct for 20# capturing the output of a subshell, which looks the same. 21# 22# In conditions, a call to the function 'empty' is syntactically similar to 23# the form $(VAR), only that the initial '$' is the 'y' of 'empty'. 24# 25# expect: Var_Parse: y(ASSIGNED) (eval) 26.if !empty(ASSIGNED) 27.endif 28 29.MAKEFLAGS: -d0 30 31all: .PHONY 32