Forest Extension - Not to be found?

[Kelly O'Hair]

On Jul 27, 2011, at 2:37 PM, Mario Torre wrote:

> 2011/7/27 Kelly O'Hair <kelly.ohair at oracle.com>:
>> 
>> On Jul 27, 2011, at 8:47 AM, Mario Torre wrote:
>> 
>>> Il giorno mer, 27/07/2011 alle 08.27 -0700, Kelly O'Hair ha scritto:
>>>> On Jul 26, 2011, at 9:52 PM, Weijun Wang wrote:
>>>> 
>>>>> 
>>>>> Then maybe you should also change BOOTDIR to jdk7.
>>>>> 
>>>> 
>>>> Good catch, yes the BOOT jdk MUST be jdk7 now, jdk6 will not work due to the
>>>> jdk7 features being added to the jdk8 sources.
>>> 
>>> Right, I will amend this (my change were documentation only so far
>>> though) but this is not too early now?
>> 
>> Not too early.
>> 
>>> 
>>> I think jdk8 can still build with jdk6 at this point, because no new
>>> features have been added yet that prevent it to work, or am I wrong?
>> 
>> Maybe the changes haven't hit the master yet, or the jdk8/build forest, but they are in the jdk8/tl
>> forest.
>> 
>> The java buildtools are starting to use the jdk7 language features, and these are built with the boot
>> jdk. And I suspect that langtools has started to use the jdk7 language features too, which also needs
>> to be built with the boot jdk.
>> So if jdk6 can be used now, that will not last long.
>> 
>> -kto
> 
> Ok, so we need to fix it quick then :)
> 
> I searched the occurrences of BOOTDIR, it's defined directly only in a
> couple of places in the Makefiles.
> 
> One is in fact documentation, the other is this:
> 
> jdk/make/Makefile:193:  $(MAKE) ALT_BOOTDIR=/opt/java/jdk1.6.0 \n\
> 
> A patch for this is trivial, but the occurrences in the README files
> are a bit trickier, for example:
> 
> """
> After installing <a href="http://fedoraproject.org">Fedora</a> 9
> you need to install several build dependencies. The simplest
> way to do it is to execute the following commands as user
> <tt>root</tt>:
> <p/>
> <code>yum-builddep java-1.6.0-openjdk</code>
> <p/>
> <code>yum install gcc gcc-c++</code>
> <p/>
> """
> 
> That would be yum-builddep java-1.7.0-openjdk then. Now, in Fedora 15
> there's no java-1.7.0-openjdk, so I doubt that there is one in Fedora
> 9 (which is long time unsupported).
> 
> Wouldn't make sense to rewrite this part of the guide completely then
> to reflect more recent distributions and guidelines?

Yes, we need to advance the README to focus on the newer systems.

> 
> In any case, in this moment with jdk7 soon to be the requirment for
> jdk8, I think that the only way to build the jdk8 would be by first
> building the jdk7 in most situation.

I think that would be right. Maybe painful enough that people will go after
systems with pre-built jdk7's on them? ;^)

> 
> What do you think?

Yup. I agree.

-kto

> 
> Cheers,
> Mario
> 
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