[drited]

Could you please expand on what that is?

[vardump]

Enable all warnings.

https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html#inde...

[ChrisMarshallNY]

It's a C/C++ compiler flag, saying all warnings on.

Since I do Swift, these days, in Xcode, I use project settings, instead.

I also like to treat warnings as errors.

Forces me to be circumspect.

[artificialLimbs]

https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html#inde...

[diab0lic]

It’s a CLI flag to the compiler that enables all warnings.