This is the mail archive of the
gcc@gcc.gnu.org
mailing list for the GCC project.
Re: Building GCC & CFLAGS settings
On Wed, May 5, 2010 at 12:41 PM, Basile Starynkevitch
<basile@starynkevitch.net> wrote:
> On 05/05/2010 07:42 PM, H.J. Lu wrote:
>>
>> On Wed, May 5, 2010 at 10:18 AM, Steve Ellcey<sje@cup.hp.com> ?wrote:
>>>
>>> I was wondering if anyone has built GCC using a CFLAGS (and CXXFLAGS)
>>> setting
>>> that causes GCC to generate code that is not compatibile with the default
>>> GCC output.
>>
>> I am using
>>
>> # CC="gcc -m32" CXX="g++ -m32" ...../configure ....
>>
>> to bootstrap 32bit gcc on 64bit Linux.
>>
>
> Out of curiosity, H.J.Lu, is it for performance reasons (like eg.
> bootstrapping in 32 bits mode is faster) or is it for testing reasons (like
> you are working on x86 32 bits backend)?
>
This is to test 32bit host wide integer on 64bit host.
--
H.J.