make: "opt-debug-lint.mk" line 19: Variable "X" is undefined
make: "opt-debug-lint.mk" line 41: Variable "UNDEF" is undefined
make: "opt-debug-lint.mk" line 61: Missing delimiter ':' after modifier "L"
make: "opt-debug-lint.mk" line 61: Missing delimiter ':' after modifier "P"
make: "opt-debug-lint.mk" line 69: Unknown modifier "${"
make: Fatal errors encountered -- cannot continue
make: stopped in unit-tests
exit status 1