select RT_USING_POSIX_STDIO for RT_LIBC_USING_FILEIO
@@ -11,6 +11,7 @@ if RT_USING_LIBC
config RT_LIBC_USING_FILEIO
bool "Enable libc with file operation, eg.fopen/fwrite/fread/getchar"
select RT_USING_POSIX
+ select RT_USING_POSIX_STDIO
default n
config RT_USING_MODULE
