1make: char-005c-reverse-solidus.mk:57: Unclosed expression, expecting "}" for modifier "Mx\}" 2 while evaluating variable "BACKSLASH" with value "" 3make: char-005c-reverse-solidus.mk:64: Unclosed expression, expecting "}" for modifier "Mx\\}" 4 while evaluating variable "BACKSLASH" with value "" 5make: char-005c-reverse-solidus.mk:71: Unclosed expression, expecting "}" for modifier "Mx\\\\\\\\}" 6 while evaluating variable "BACKSLASH" with value "" 7make: char-005c-reverse-solidus.mk:100: Unfinished backslash at the end in pattern "\" of modifier ":M" 8 while evaluating variable "BACKSLASH" with value "\" 9make: char-005c-reverse-solidus.mk:111: Unclosed expression, expecting "}" for modifier "M${:U\\\\}} != "\\"" 10 while evaluating variable "BACKSLASH" with value "" 11make: Fatal errors encountered -- cannot continue 12make: stopped in unit-tests 13exit status 1 14