1make: "directive-for-empty.mk" line 22: 2 2make: "directive-for-empty.mk" line 38: Missing argument for ".error" 3make: "directive-for-empty.mk" line 38: Missing argument for ".error" 4make: "directive-for-empty.mk" line 38: Missing argument for ".error" 5For: end for 1 6For: loop body with i = value: 7# The identifier 'empty' can only be used in conditions such as .if, .ifdef or 8# .elif. In other lines the string 'empty(' must be preserved. 9CPPFLAGS+= -Dmessage="empty(i)" 10# There may be whitespace between 'empty' and '('. 11.if ! empty (i) 12. error 13.endif 14# Even in conditions, the string 'empty(' is not always a function call, it 15# can occur in a string literal as well. 16.if "empty\(i)" != "empty(i)" 17. error 18.endif 19# In comments like 'empty(i)', the text must be preserved as well. 20# 21# Conditions, including function calls to 'empty', can not only occur in 22# condition directives, they can also occur in the modifier ':?', see 23# varmod-ifelse.mk. 24CPPFLAGS+= -Dmacro="${empty(i):?empty:not-empty}" 25make: Fatal errors encountered -- cannot continue 26make: stopped in unit-tests 27exit status 1 28