Dropping 32-bit support (was Branches)

Phil Race philip.race at oracle.com
Tue Feb 21 15:49:09 PST 2012

I was half suggesting that, half wondering. I suspect that most of the 
queries on the value
of that flag are inside some "if <platform>" test so we  may only need 
to make the OS X
build path understand the combined setting for those cases, minimising 
the disruption.


On 2/21/2012 3:32 PM, Mike Swingler wrote:
> Would it be feasible to overload ARCH_DATA_MODEL to take a string like "32+64", "32/64", or "Universal" (even though that's an ambiguous misnomer)?
> On Feb 21, 2012, at 3:31 PM, Phil Race wrote:
>> 'ARCH_DATA_MODEL' has historically been used to select a build as 32 or 64 bit.
>> So  'ARCH_DATA_MODEL=32' ought to be able to select a 32 bit only build without
>> too many build changes. Making that support 32+64 as well may be appropriate for OS X builds.
>> -phil.
>> On 2/21/2012 3:19 PM, Mike Swingler wrote:
>>> Awesome, thanks much James.
>>> Is there a pre-existing flag or naming convention for architecture-related build flags? Obviously we want to align with existing precedent, and get the HotSpot and JDK sides to use the same flag. :-)
>>> On Feb 21, 2012, at 2:58 PM, James Melvin wrote:
>>>> Yes.  I can file a bug and look into this, Mike.
>>>> - Jim
>>>> On 2/21/12 5:55 PM, Mike Swingler wrote:
>>>>> On Feb 21, 2012, at 2:45 PM, James Melvin wrote:
>>>>>> One caveat...
>>>>>> For the JVM, we've preserved 32/64-bit universal builds. Currently, the
>>>>>> JVM universal build only includes 64-bit support. Additionally including
>>>>>> 32-bit requires 3 Makefile uncomments. However, there may likely be
>>>>>> additional work on the JDK side to fully support the same.
>>>>> That's good to know, but that should really be keyed off of a build flag (which can default to 64-bit only). Should we file a CR through the Oracle bug reporter to get the process started to change this for HotSpot?
>>> Is there someone who can help restore the 32/64-bit build-ability for the JDK side, or at least direct us as to where we can start filing a CR?
> Curious,
> Mike Swingler
> Apple Inc.

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