1 1.3 rillig # $NetBSD: var-scope-local-legacy.mk,v 1.3 2023/12/17 14:07:22 rillig Exp $ 2 1.1 rillig # 3 1.1 rillig # Tests for legacy target-local variables, such as ${<F} or ${@D}. 4 1.1 rillig 5 1.3 rillig 6 1.3 rillig # In the global or command line scopes, the legacy forms are not recognized, 7 1.3 rillig # as the target-specific variables are not available either. The expressions 8 1.3 rillig # are retained so that they can be resolved later, in the target scope. 9 1.3 rillig .if "${@D}" != "\${@D}" 10 1.3 rillig . error 11 1.3 rillig .endif 12 1.3 rillig 13 1.3 rillig # It's possible to define variables of the legacy name in the global or 14 1.3 rillig # command line scope, and they override the target-local variables, leading to 15 1.3 rillig # unnecessary confusion. 16 1.3 rillig @D= global-value 17 1.3 rillig .if "${@D}" != "global-value" 18 1.3 rillig . error 19 1.3 rillig .endif 20 1.3 rillig 21 1.3 rillig 22 1.2 rillig all: .PHONY 23 1.2 rillig # Only variables of length 2 can be legacy, this one cannot. 24 1.2 rillig : LEN4=${LEN4:Uundef}_ 25 1.2 rillig # The second character of the name must be 'D' or 'F'. 26 1.2 rillig : XY=${XY:Uundef}_ 27 1.2 rillig # The first character must name one of the 7 predefined local 28 1.2 rillig # variables, 'A' is not such a character. 29 1.2 rillig : AF=${AF:Uundef}_ 30 1.2 rillig # The variable '.MEMBER' is undefined, therefore '%D' and '%F' are 31 1.2 rillig # undefined as well. 32 1.2 rillig : %D=${%D:Uundef}_ %F=${%F:Uundef}_ 33 1.3 rillig # The directory name of the target is shadowed by the global variable, 34 1.3 rillig # it would be '.' otherwise. The basename is 'all'. 35 1.2 rillig : @D=${@D:Uundef}_ @F=${@F:Uundef}_ 36
Indexes created Thu Oct 23 22:10:10 GMT 2025