1# $NetBSD: depsrc.mk,v 1.5 2021/12/13 23:38:54 rillig Exp $ 2# 3# Tests for special sources (those starting with a dot, followed by 4# uppercase letters) in dependency declarations, such as '.PHONY'. 5 6# TODO: Implementation 7 8# TODO: Test 'target: ${:U.SILENT}' 9 10# Demonstrate when exactly undefined variables are expanded in a dependency 11# declaration. 12target: .PHONY source-${DEFINED_LATER} 13# 14DEFINED_LATER= later 15# 16source-: .PHONY 17 # This section applies. 18 : 'Undefined variables are expanded directly in the dependency' 19 : 'declaration. They are not preserved and maybe expanded later.' 20 : 'This is in contrast to local variables such as $${.TARGET}.' 21source-later: .PHONY 22 # This section doesn't apply. 23 : 'Undefined variables are tried to be expanded in a dependency' 24 : 'declaration. If that fails because the variable is undefined,' 25 : 'the expression is preserved and tried to be expanded later.' 26 27# Sources that look like keywords but are not known are interpreted as 28# ordinary sources. 29target: .UNKNOWN 30 31.UNKNOWN: 32 : Making ${.TARGET} from ${.ALLSRC:S,^$,nothing,W}. 33