58 lines
1.3 KiB
Makefile
58 lines
1.3 KiB
Makefile
# $NetBSD: cond-func-defined.mk,v 1.9 2022/05/08 06:51:27 rillig Exp $
|
|
#
|
|
# Tests for the defined() function in .if conditions.
|
|
|
|
DEF= defined
|
|
${:UA B}= variable name with spaces
|
|
|
|
.if !defined(DEF)
|
|
. error
|
|
.endif
|
|
|
|
# Horizontal whitespace (space tab) after the opening parenthesis is ignored.
|
|
.if !defined( DEF)
|
|
. error
|
|
.endif
|
|
|
|
# Horizontal whitespace (space tab) before the closing parenthesis is ignored.
|
|
.if !defined(DEF )
|
|
. error
|
|
.endif
|
|
|
|
# The argument of a function must not directly contain whitespace.
|
|
.if !defined(A B)
|
|
. error
|
|
.endif
|
|
|
|
# If necessary, the whitespace can be generated by a variable expression.
|
|
.if !defined(${:UA B})
|
|
. error
|
|
.endif
|
|
|
|
# Parse error: missing closing parenthesis; see ParseWord.
|
|
.if defined(DEF
|
|
. error
|
|
.else
|
|
. error
|
|
.endif
|
|
|
|
# Variables from .for loops are not defined.
|
|
# See directive-for.mk for more details.
|
|
.for var in value
|
|
. if defined(var)
|
|
. error
|
|
. else
|
|
. info In .for loops, variable expressions for the loop variables are
|
|
. info substituted at evaluation time. There is no actual variable
|
|
. info involved, even if it feels like it.
|
|
. endif
|
|
.endfor
|
|
|
|
# Neither of the conditions is true. Before July 2020, the right-hand
|
|
# condition was evaluated even though it was irrelevant.
|
|
.if defined(UNDEF) && ${UNDEF:Mx} != ""
|
|
. error
|
|
.endif
|
|
|
|
all: .PHONY
|