make: "varmod.mk" line 96: To escape a dollar, use \$, not $$, at "$$:L} != """
make: "varmod.mk" line 96: Invalid variable name ':', at "$:L} != """
make: "varmod.mk" line 101: Dollar followed by nothing
make: "varmod.mk" line 110: Missing delimiter ':' after modifier "P"
make: "varmod.mk" line 111: Missing argument for ".error"
make: Fatal errors encountered -- cannot continue
make: stopped in unit-tests
exit status 1