1make: "directive-for-empty.mk" line 22: 2 2For: end for 1 3For: loop body with i = value: 4# The identifier 'empty' can only be used in conditions such as .if, .ifdef or 5# .elif. In other lines the string 'empty(' must be preserved. 6CPPFLAGS+= -Dmessage="empty(i)" 7# There may be whitespace between 'empty' and '('. 8.if ! empty (i) 9. error 10.endif 11# Even in conditions, the string 'empty(' is not always a function call, it 12# can occur in a string literal as well. 13.if "empty\(i)" != "empty(i)" 14. error 15.endif 16# In comments like 'empty(i)', the text must be preserved as well. 17# 18# Conditions, including function calls to 'empty', can not only occur in 19# condition directives, they can also occur in the modifier ':?', see 20# varmod-ifelse.mk. 21CPPFLAGS+= -Dmacro="${empty(i):?empty:not-empty}" 22exit status 0 23