Building Firmware, Issue with winc.c

OpenMV Products
1

I am trying to build the firmware by following this guide (https://github.com/openmv/openmv/blob/master/src/README.md). I haven’t edited any of the files in the repo. I am currently stuck on the last step:

This will build the MicroPython Cross Compilier which we use to include frozen bytecode modules into the OpenMV Cam firmware. This only needs to be done once (or if mpy-cross changes). Next:

cd …/…/
make

When I execute make, it eventually shows an error in the winc.c file:

…
CC src/socket.c
CC src/spi_flash.c
CC src/winc.c
src/winc.c: In function ‘wifi_callback_sta’:
src/winc.c:392:13: error: ‘strncpy’ output may be truncated copying 32 bytes from a string of length 32 [-Werror=stringop-truncation]
392 | strncpy((char) wscan_result.ssid, (const char ) scan_result->au8SSID, WINC_MAX_SSID_LEN-1);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/winc.c:356:13: error: ‘strncpy’ output may be truncated copying 32 bytes from a string of length 32 [-Werror=stringop-truncation]
356 | strncpy(netinfo->ssid, con_info->acSSID, WINC_MAX_SSID_LEN-1);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors

Any idea what might going on?

2

It’s an issue with GCC version. Just patch that file yourself to fix the error. My version of GCC does not throw that error.