1# $NetBSD: varname-dot-parsedir.mk,v 1.8 2023/06/21 07:30:50 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# See also
7#	varname-dot-includedfromdir.mk
8#	varname-dot-includedfromfile.mk
9#	varname-dot-parsefile.mk
10#
11# History
12#	.PARSEDIR and .PARSEFILE were added on 1999-08-09.
13
14# The .PARSEDIR may be absolute or relative, therefore there is not much that
15# can be tested here.
16.if !${.PARSEDIR:tA:M*/unit-tests}
17.  error
18.endif
19
20# During parsing, it is possible to undefine .PARSEDIR.
21# Not that anyone would ever want to do this, but there's code in parse.c,
22# function PrintLocation, that explicitly handles this situation.
23.if !defined(.PARSEDIR)
24.  error
25.endif
26.undef .PARSEDIR
27.if defined(.PARSEDIR)
28.  error
29.endif
30
31# The variable .PARSEDIR is indirectly used by the .info directive,
32# via PrintLocation.
33#
34# The .rawout file contains the full path to the current directory.
35# In the .out file, it is filtered out.
36# expect+1: At this point, .PARSEDIR is undefined.
37.info At this point, .PARSEDIR is undefined.
38
39# There is absolutely no point in faking the location of the file that is
40# being parsed.  Technically, it's possible though, but only if the file
41# being parsed is a relative pathname.  See PrintLocation for details.
42.PARSEDIR=	/fake-absolute-path
43.info The location can be faked in some cases.
44
45# After including another file, .PARSEDIR is reset.
46.include "/dev/null"
47# expect+1: The location is no longer fake.
48.info The location is no longer fake.
49
50all:
51	@echo At run time, .PARSEDIR is ${.PARSEDIR:Uundefined}.
52