From acb299e240b62fc95bb63959a6b25fbd2b27322e Mon Sep 17 00:00:00 2001
From: Marc Kleine-Budde <mkl@blackshift.org>
Date: Mon, 3 Jun 2024 16:50:40 +0200
Subject: [PATCH] main: provide weak symbols for _close, _lseek, _read, _write

This increases the size of the binary in a stm32f072 a bit:

before:
Memory region         Used Size  Region Size  %age Used
           FLASH:       17296 B       128 KB     13.20%
             RAM:        4268 B        16 KB     26.05%

after:
Memory region         Used Size  Region Size  %age Used
           FLASH:       17312 B       128 KB     13.21%
             RAM:        4268 B        16 KB     26.05%

Closes: https://github.com/candle-usb/candleLight_fw/issues/164
---
 src/main.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/main.c b/src/main.c
index c647cf9f..6abebf27 100644
--- a/src/main.c
+++ b/src/main.c
@@ -51,6 +51,15 @@ static void SystemClock_Config(void);
 static USBD_GS_CAN_HandleTypeDef hGS_CAN;
 static USBD_HandleTypeDef hUSB = {0};
 
+void __weak _close(void) {
+}
+void __weak _lseek(void) {
+}
+void __weak _read(void) {
+}
+void __weak _write(void) {
+}
+
 int main(void)
 {
 	HAL_Init();