1# $NetBSD: var-class-local.mk,v 1.5 2020/11/05 18:08:39 rillig Exp $
2#
3# Tests for target-local variables, such as ${.TARGET} or $@.
4
5# TODO: Implementation
6
7# Ensure that the name of the variable is exactly the given one.
8# The variable "@" is an alias for ".TARGET", so the implementation might
9# canonicalize these aliases at some point, and that might be surprising.
10# This aliasing happens for single-character variable names like $@ or $<
11# (see VarFind, CanonicalVarname), but not for braced or parenthesized
12# expressions like ${@}, ${.TARGET} ${VAR:Mpattern} (see Var_Parse,
13# ParseVarname).
14.if ${@:L} != "@"
15.  error
16.endif
17.if ${.TARGET:L} != ".TARGET"
18.  error
19.endif
20.if ${@F:L} != "@F"
21.  error
22.endif
23.if ${@D:L} != "@D"
24.  error
25.endif
26
27all:
28
29.SUFFIXES: .c .o
30
31var-class-local.c:
32	: Making ${.TARGET} out of nothing.
33
34.c.o:
35	: Making ${.TARGET} from ${.IMPSRC}.
36
37	# The local variables @F, @D, <F, <D are legacy forms.
38	# See the manual page for details.
39	: Making basename "${@F}" in "${@D}" from "${<F}" in "${<D}".
40
41all: var-class-local.o
42	# The ::= modifier overwrites the .TARGET variable in the node
43	# 'all', not in the global scope.  This can be seen with the -dv
44	# option, looking for "all:@ = overwritten".
45	: ${.TARGET} ${.TARGET::=overwritten}${.TARGET}
46