Ship jdk7 ct.sym with jdk8?

[Peter Levart]

On 03/14/2013 05:46 PM, Joe Darcy wrote:
> On 3/14/2013 4:08 AM, Peter Levart wrote:
>> On 03/13/2013 09:44 PM, Joel Borggrén-Franck wrote:
>>> On Mar 13, 2013, at 7:24 PM, Joe Darcy <joe.darcy at oracle.com> wrote:
>>>
>>>> On 3/12/2013 1:47 AM, Joel Borggrén-Franck wrote:
>>>>> Why? It is just a file. If we want to make javac a more robust 
>>>>> cross compiler (and I think we should) we should fix the logistics 
>>>>> until we can do what we want.
>>>> As a rule, the JDK Hg repos do *not* include binary files, just 
>>>> source files. Therefore, there could be logistical issues in simply 
>>>> storing the old ct.sym files in the repo. We'd ultimately want to 
>>>> use some kind of implicit or explicit diff-based compression of the 
>>>> cross-version information.
>>>>
>>> Or just inject the file at product build time, I take it for granted 
>>> we can keep a reference implementations of our N-1 product in a 
>>> stable enough location for this not to be an issue.
>>>
>>> Our infrastructure is what we make it to be. If it doesn't suit our 
>>> purposes we should change it until it does. Also rules are there to 
>>> suit or needs, if they are outdated we should change them.
>>>
>>> That being said, there are multiple ways to solve this particular 
>>> problem, lets focus on what we should do instead of what our 
>>> infrastructure may or may not allow us to do.
>>>
>>> cheers
>>> /Joel
>>
>> Isn't the build environment already such that it has to have access 
>> to "bootstrap" JDK which usually *is* one major version behind the 
>> version of JDK/JRE it is building? Couldn't ct.sym file be "provided" 
>> by the bootstrap JDK?
>
> You can also bootstrap a build of JDK N with another build of JDK N 
> :-) In fact this is a common initial test of a JDK build to make sure 
> it isn't DOA.
>

Ok, but the 1st JDK N build must have been built with the JDK N-1. And 
from that on, by induction, each JDK N already has ct.(N-1).sym included 
and can be used as bootstrap JDK to build JDK N and provide it with 
ct.(N-1).sym... It's like virus ;-) ...

Regards, Peter

> -Joe

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