RFR: JDK-8087193: Support building with devkits on Macosx

[Erik Joelsson]

On the machine I'm trying this on, without any C compiler on the path, 
this is what I get with the patch. Note that "uname -p" is what 
autoconf-config.guess is using.

 > uname -m
x86_64
 > uname -p
i386

 > bash common/autoconf/build-aux/autoconf-config.guess
i386-apple-darwin13.4.0

 > bash common/autoconf/build-aux/config.guess
x86_64-apple-darwin13.4.0

/Erik

On 2015-06-12 08:52, Magnus Ihse Bursie wrote:
> On 2015-06-11 15:09, Erik Joelsson wrote:
>> It seems this approach didn't quite work out. The bootstrapping order 
>> of configure is sensitive. Here is another attempt at solving the 
>> issue by simply forcing macosx to be x86_64 in our config.guess wrapper.
>>
>> http://cr.openjdk.java.net/~erikj/8087193/webrev.02/
>
> This code:
>
> +echo $OUT | grep i386-apple-darwin > /dev/null 2> /dev/null
> +if test $? = 0; then
> +  REAL_CPU=`uname -m`
> +  OUT=$REAL_CPU`echo $OUT | sed -e 's/[^-]*//'`
> +fi
>
>
> Can you provide an example of  uname -m and the resulting OUT string 
> on macosx/x64?
>
> /Magnus
>
>>
>> /Erik
>>
>> On 2015-06-11 13:14, Erik Joelsson wrote:
>>> I forgot to motivate the change. Configure runs config.guess to 
>>> figure out what kind of machine it's running on. That file in turn 
>>> uses the C preprocessor to figure out if it's 32 or 64 bit. If we 
>>> don't setup devkit before running config.guess, the preprocessor 
>>> might not be available and configure will think the mac is a 32 bit 
>>> machine.
>>>
>>> /Erik
>>>
>>> On 2015-06-11 12:46, Erik Joelsson wrote:
>>>> Hello,
>>>>
>>>> Please review this minor tweak to configure which enables the use 
>>>> of a portable devkit on Macosx. Also included is the script used to 
>>>> generate the devkit. The plan is use this internally on our build 
>>>> servers to ease installation and setup of our machines.
>>>>
>>>> Bug: https://bugs.openjdk.java.net/browse/JDK-8087193
>>>> Webrev: http://cr.openjdk.java.net/~erikj/8087193/webrev.01/
>>>>
>>>> /Erik
>>>
>>
>