From e33bc59712aa484107dc1cd4009dd8ab2da6dcb2 Mon Sep 17 00:00:00 2001
From: Sean Burton
Date: Thu, 13 Dec 2018 12:10:35 +0000
Subject: py: Remove calls to file reader functions when these are disabled.

If MICROPY_PERSISTENT_CODE_LOAD or MICROPY_ENABLE_COMPILER are enabled then
code gets enabled that calls file reading functions which may be disabled
if no readers have been implemented.

To fix this, introduce a MICROPY_HAS_FILE_READER variable, which is
automatically set if MICROPY_READER_POSIX or MICROPY_READER_VFS is set but
can also be manually set if a custom reader is being implemented.  Then
disable the file reading calls if this is not set.
---
 py/persistentcode.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'py/persistentcode.c')

diff --git a/py/persistentcode.c b/py/persistentcode.c
index 7113b0dc2..88e958d8f 100644
--- a/py/persistentcode.c
+++ b/py/persistentcode.c
@@ -232,12 +232,16 @@ mp_raw_code_t *mp_raw_code_load_mem(const byte *buf, size_t len) {
     return mp_raw_code_load(&reader);
 }
 
+#if MICROPY_HAS_FILE_READER
+
 mp_raw_code_t *mp_raw_code_load_file(const char *filename) {
     mp_reader_t reader;
     mp_reader_new_file(&reader, filename);
     return mp_raw_code_load(&reader);
 }
 
+#endif // MICROPY_HAS_FILE_READER
+
 #endif // MICROPY_PERSISTENT_CODE_LOAD
 
 #if MICROPY_PERSISTENT_CODE_SAVE
-- 
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