[icedtea zero] enable 32bit builds for powerpc

[Andrew Haley]

Gary Benson wrote:
> Andrew Haley wrote:
>> Gary Benson wrote:
>>> Christian Thalinger wrote:
>>>> On Sun, 2008-07-20 at 17:01 +0200, Matthias Klose wrote:
>>>>> diff -r 2f1e7255ab4d acinclude.m4
>>>>> --- a/acinclude.m4	Wed Jul 16 10:10:45 2008 -0400
>>>>> +++ b/acinclude.m4	Sun Jul 20 17:04:30 2008 +0200
>>>>> @@ -16,6 +16,16 @@ AC_DEFUN([SET_ARCH_DIRS],
>>>>>        INSTALL_ARCH_DIR=arm
>>>>>        JRE_ARCH_DIR=arm
>>>>>        ;;
>>>>> +    powerpc-*-*)
>>>>> +      BUILD_ARCH_DIR=ppc
>>>>> +      INSTALL_ARCH_DIR=ppc
>>>>> +      JRE_ARCH_DIR=ppc
>>>>> +       ;;
>>>>> +    powerpc64-*-*)
>>>>> +      BUILD_ARCH_DIR=ppc64
>>>>> +      INSTALL_ARCH_DIR=ppc64
>>>>> +      JRE_ARCH_DIR=ppc64
>>>>> +       ;;
>>>>>      sparc64-*-*)
>>>>>        BUILD_ARCH_DIR=sparcv9
>>>>>        INSTALL_ARCH_DIR=sparcv9
>>>> Hmm, I don't understand why we need this one.  The default case
>>>> uses `uname -m` and this should be "ppc" on 32-bit, no?
>>> Yeah, what does this do that the default case doesn't?
>> On many Linux PPC boxes the kernel is 64-bit but userspace libraries
>> are all installed as 32-bit.  This is because 32-bit is usually much
>> faster than 64-bit.  We need to allow for this situation.
> 
> And does ./configure actually detect this?

Err, you are the one with the Linux PPC box.  Does it?  "uname -m" should
return ppc64 for the kernel, but perhaps config.guess does something a bit
more sophisticated.

Andrew.