make: "varmod-loop-varname.mk" line 18: In the :@ modifier of "", the variable name "${:Ubar:S,b,v,}" must not contain a dollar make: "varmod-loop-varname.mk" line 18: Malformed conditional (${:Uone two three:@${:Ubar:S,b,v,}@+${var}+@} != "+one+ +two+ +three+") make: "varmod-loop-varname.mk" line 89: In the :@ modifier of "1 2 3", the variable name "v$" must not contain a dollar make: "varmod-loop-varname.mk" line 89: Malformed conditional (${1 2 3:L:@v$@($v)@} != "(1) (2) (3)") make: "varmod-loop-varname.mk" line 96: In the :@ modifier of "1 2 3", the variable name "v$$" must not contain a dollar make: "varmod-loop-varname.mk" line 96: Malformed conditional (${1 2 3:L:@v$$@($v)@} != "() () ()") make: "varmod-loop-varname.mk" line 103: In the :@ modifier of "1 2 3", the variable name "v$$$" must not contain a dollar make: "varmod-loop-varname.mk" line 103: Malformed conditional (${1 2 3:L:@v$$$@($v)@} != "() () ()") make: Fatal errors encountered -- cannot continue make: stopped in unit-tests exit status 1