Hi Joel,

It enables additional debug output and sanity checks. You can find more 
information at [1].

Kind regards,
Bas

[1] https://riot-os.org/api/group__utils.html 
<https://riot-os.org/api/group__utils.html>

> Op 14 mei 2019, om 19:40 heeft Joel Carron <[email protected]> het 
> volgende geschreven:
> 
> Hi everyone,
> 
> Can someone explain me what this flag in Makefile examples do ?
> 
> I just finished an app for a custom board. As my Makefile was based on an 
> example, there was still this flag present. As its comment suggests, it's for 
> development so I decided to remove it.
> 
> After removing it, my application starts normally right after flashing my 
> board but as soon as I unplug it from power supply and plug it again, the app 
> doesn't start anymore. I flashed the app on a Nucleo-F303RE to get some 
> console output but I just get garbage from pyterm. I decided to keep this 
> flag as it works flawlessly with it and takes only 4kB more in ROM but it 
> could be great if someone knows a little more about it.
> 
> What could cause my app on two boards to fail starting without this flag ? In 
> my app, I use some DEBUG() macros, I start two threads, do some UDP packets 
> exchanges with another boards and that's it.
> 
> Best regards
> 
> Joel
> 
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