1148ee845SSimon J. Gerratymake: "directive-for-empty.mk" line 22: 2 2954401e6SSimon J. GerratyFor: end for 1 3148ee845SSimon J. GerratyFor: loop body with i = value: 4954401e6SSimon J. Gerraty# The identifier 'empty' can only be used in conditions such as .if, .ifdef or 5954401e6SSimon J. Gerraty# .elif. In other lines the string 'empty(' must be preserved. 6954401e6SSimon J. GerratyCPPFLAGS+= -Dmessage="empty(i)" 7954401e6SSimon J. Gerraty# There may be whitespace between 'empty' and '('. 8954401e6SSimon J. Gerraty.if ! empty (i) 9954401e6SSimon J. Gerraty. error 10954401e6SSimon J. Gerraty.endif 11954401e6SSimon J. Gerraty# Even in conditions, the string 'empty(' is not always a function call, it 12954401e6SSimon J. Gerraty# can occur in a string literal as well. 13954401e6SSimon J. Gerraty.if "empty\(i)" != "empty(i)" 14954401e6SSimon J. Gerraty. error 15954401e6SSimon J. Gerraty.endif 16954401e6SSimon J. Gerraty# In comments like 'empty(i)', the text must be preserved as well. 17954401e6SSimon J. Gerraty# 18954401e6SSimon J. Gerraty# Conditions, including function calls to 'empty', can not only occur in 19954401e6SSimon J. Gerraty# condition directives, they can also occur in the modifier ':?', see 20954401e6SSimon J. Gerraty# varmod-ifelse.mk. 21954401e6SSimon J. GerratyCPPFLAGS+= -Dmacro="${empty(i):?empty:not-empty}" 22*8d5c8e21SSimon J. Gerratyexit status 0 23