# newlib second-part options config LIBC_NEWLIB_IO_FLOAT bool prompt "Enable IOs on floats and doubles" default n help Enable support for IOs on floating point values (float and double). config LIBC_NEWLIB_IO_LDBL bool prompt "Enable IOs on long doubles" default n depends on LIBC_NEWLIB_IO_FLOAT help Enable support for IOs on long doubles.