1# $NetBSD: varname-dot-parsedir.mk,v 1.6 2020/10/24 08:50:17 rillig Exp $ 2# 3# Tests for the special .PARSEDIR variable, which contains the directory part 4# of the file that is currently parsed. 5 6# The .PARSEDIR may be absolute or relative, therefore there is not much that 7# can be tested here. 8.if !${.PARSEDIR:tA:M*/unit-tests} 9. error 10.endif 11 12# During parsing, it is possible to undefine .PARSEDIR. 13# Not that anyone would ever want to do this, but there's code in parse.c, 14# function PrintLocation, that explicitly handles this situation. 15.if !defined(.PARSEDIR) 16. error 17.endif 18.undef .PARSEDIR 19.if defined(.PARSEDIR) 20. error 21.endif 22 23# The variable .PARSEDIR is indirectly used by the .info directive, 24# via PrintLocation. 25# 26# The .rawout file contains the full path to the current directory. 27# In the .out file, it is filtered out. 28.info At this point, .PARSEDIR is undefined. 29 30# There is absolutely no point in faking the location of the file that is 31# being parsed. Technically, it's possible though, but only if the file 32# being parsed is a relative pathname. See PrintLocation for details. 33.PARSEDIR= /fake-absolute-path 34.info The location can be faked in some cases. 35 36# After including another file, .PARSEDIR is reset. 37.include "/dev/null" 38.info The location is no longer fake. 39 40all: 41 @echo At run time, .PARSEDIR is ${.PARSEDIR:Uundefined}. 42