Build portability: enable or disable warnings

[Erik Trimble]

On 5/16/2011 12:38 PM, Andrew Haley wrote:
> On 05/16/2011 07:59 PM, Dmitry Samersoff wrote:
>> Andrew,
>>
>> On 2011-05-16 21:12, 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.
>> OK.
>>
>>    But in this case we have no reliable way to deal with "semi-crazy
>> distros" as all our attempts to disable all but some important  warnings
>> could be blocked by theirs patches.
> No: their patches don't force anything, only changing the default.
> The user's choice is honoured.
>
> Andrew.

Is there any way to invoke gcc with some option that says "ignore all 
built-in options" ?

e.g.    gcc -Wignore-everything-built-in

and not just override things one at a time?



-- 
Erik Trimble
Java System Support
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