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# $NetBSD: cond-func-defined.mk,v 1.15 2025/06/28 22:39:28 rillig Exp $
#
# Tests for the defined() function in .if conditions.
DEF= defined
${:UA B}= variable name with spaces
.if !defined(DEF)
. error
.endif
# Horizontal whitespace (space tab) after the opening parenthesis is ignored.
.if !defined( DEF)
. error
.endif
# Horizontal whitespace (space tab) before the closing parenthesis is ignored.
.if !defined(DEF )
. error
.endif
# The argument of a function must not directly contain whitespace.
# expect+1: Missing ")" after argument "A" for "defined"
.if !defined(A B)
. error
.endif
# If necessary, the whitespace can be generated by an expression.
.if !defined(${:UA B})
. error
.endif
# expect+1: Missing ")" after argument "DEF" for "defined"
.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
# In .for loops, expressions based on the loop variables are substituted at
# evaluation time. There is no actual variable involved, even if the code in
# the makefiles looks like it.
. endif
.endfor
# Expressions in the argument of a function call don't have to be defined.
.if defined(${UNDEF})
. error
.endif
# 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
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