By default, GCC assumes that the C character escape sequences take on their ASCII values for the target. If this is not correct, you must explicitly define all of the macros below.
TARGET_BELL
\a.
TARGET_ESC
\e and \E to this.
TARGET_BS
TARGET_TAB
TARGET_NEWLINE
\b, \t and \n.
TARGET_VT
TARGET_FF
TARGET_CR
\v, \f and \r.