make: "varname-dot-newline.mk" line 28: Cannot overwrite ".newline" as it is read-only in directory make: "varname-dot-newline.mk" line 30: Cannot append to ".newline" as it is read-only in directory make: "varname-dot-newline.mk" line 32: Cannot delete ".newline" as it is read-only in directory make: Fatal errors encountered -- cannot continue make: stopped making "try-to-modify" in unit-tests first second backslash newline: <\ > exit status 0