1# $NetBSD: varname-dot-shell.mk,v 1.7 2021/02/04 21:42:47 rillig Exp $ 2# 3# Tests for the special .SHELL variable, which contains the shell used for 4# running the commands. 5# 6# This variable is read-only. 7 8.MAKEFLAGS: -dcpv 9 10ORIG_SHELL:= ${.SHELL} 11 12.SHELL= overwritten 13.if ${.SHELL} != ${ORIG_SHELL} 14. error 15.endif 16 17# Trying to append to the variable. 18# Since 2020-10-30 this is prevented. 19.MAKEFLAGS: .SHELL+=appended 20.if ${.SHELL} != ${ORIG_SHELL} 21. error 22.endif 23 24# Trying to delete the variable. 25# This has no effect since the variable is not defined in the global scope, 26# but in the command-line scope. 27.undef .SHELL 28.SHELL= newly overwritten 29.if ${.SHELL} != ${ORIG_SHELL} 30. error 31.endif 32 33.MAKEFLAGS: -d0 34 35all: 36 @:; 37