make: "varmod.mk" line 42: To escape a dollar, use \$, not $$, at "$$:L} != """ make: "varmod.mk" line 42: Invalid variable name ':', at "$:L} != """ make: "varmod.mk" line 47: Dollar followed by nothing make: "varmod.mk" line 56: Missing delimiter ':' after modifier "P" make: "varmod.mk" line 57: Missing argument for ".error" make: Fatal errors encountered -- cannot continue make: stopped in unit-tests exit status 1