Build portability: enable or disable warnings

[Kelly O'Hair]

On May 16, 2011, at 10:12 AM, Andrew Haley wrote:

> On 05/16/2011 05:50 PM, Dmitry Samersoff wrote:
>> Andrew,
>> 
>> I guess we can add to build system something like
>> 
>> ALT_COMPILER_FLAGS
>> 
>> and turn on all warnings and -Werror by default.
>> 
>> Having zero-warning build is good practice and it's not too costly.
> 
> It'd drive you mad.  gcc's -Wall is really not suitable to be enabled
> by default; it was never intended for that.
> 
> Andrew.

But there is probably a set of warnings or options, e.g.
   -Wall  -Wno-this  -Wno-that -Werror
that might be suitable to standardize on, right?
Although, that might be a different list with each gcc release as I have noticed.

We need a  -Wall-the-warnings-that-are-really-important-to-fix  ;^)

-kto