On 22 February 2011 17:26, Phil Race <philip.r...@oracle.com> wrote: > On 2/20/2011 9:39 AM, Dr Andrew John Hughes wrote: >> >> On 15 February 2011 20:23, Phil Race<philip.r...@oracle.com> wrote: >>> >>> On 2/15/2011 6:07 AM, Dr Andrew John Hughes wrote: >>>> >>>> Yes, IcedTea uses system libraries for everything bar LCMS, where >>>> local changes in OpenJDK mean we are still forced to use the in-tree >>>> version. There hasn't been any success upstreaming these changes, >>>> though I haven't looked at LCMS 2.x. >>> >>> LittleCMS 1.x didn't provide the support necessary to pass JCK. So we >>> talked to >>> the LittleCMS maintainer and he added the necessary APIs in 2.0 >>> JDK 7 has had LittleCMS 2.0 for almost 6 months now and that is >>> included >>> without any code >>> modifications, so I think it should now be possible to use a system >>> library, although >>> we didn't do the work to actually enable that, so its built into a JDK >>> library which >>> has the littlecms code and the glue code. We need to provide the >>> ability >>> to separate these. >>> When we pushed LCMS 2.0, I asked for a bug to be filed to remember to >>> do >>> this work >>> but I can't find it in the database. I'll ask for that to be filed if >>> it >>> wasn't already. >>> NB It didn't seem super-urgent since we pulled in LCMS 2.0 relatively >>> soon >>> after its release >>> we thought shipping distros weren't likely to have the library upgrade >>> anyway, but that's >>> probably changing. >>> >>> -phil. >>> >>> >> Hi Phil, >> >> Thanks for making me aware of this. I briefly glanced at some for the >> release notes for LCMS 2 when it was released, and saw something that >> may support the missing functionality, but never had chance to look in >> detail. I've also not had chance to look at OpenJDK 7 recently, so >> it's great to hear that support has already gone in. Do you have any >> idea as to whether this would be safe to backport to OpenJDK 6? I >> presume it doesn't alter any public API. > > It ought to be OK. If someone else wants to take on the work that is :-) >
Consider it on my TODO list ;-) >> I've not seen any use of OpenJDK 7 by distros as yet. We've managed >> with the other libraries without in-tree support by using local >> patching. There's a big libraries patch in IcedTea that would be nice >> to integrate but it would need considerable work to do optional system >> linking rather than the current brute force of deleting the in-tree >> version and always linking. There's also no TCK for 7 yet, which is I >> believe what caught many of the issues with missing LCMS support >> before. > > I don't know how distros would want to present/package the 7 EA builds so > I'm not > too surprised they aren't common. > > We believe LCMS 2.0 should pass JCK, but I don't know if a full JCK run > has been performed against a fully open 7 build since it went in. > A 6-open backport would find any problems there. > I wasn't aware there was a JCK for 7 yet. At least, not one under the same terms as the one used for OpenJDK6. >> I did a quick survey of distro support for LCMS 2. It's in Gentoo >> (which is what made me aware of it), but Ubuntu, Debian and Fedora all >> seem to still be on the 1.x series. So it doesn't seem to be changing >> yet. Maybe OpenJDK could be the kick they need to support it? ;-) > > yep. > > -phil. > -- Andrew :-) Free Java Software Engineer Red Hat, Inc. (http://www.redhat.com) Support Free Java! Contribute to GNU Classpath and the OpenJDK http://www.gnu.org/software/classpath http://openjdk.java.net PGP Key: F5862A37 (https://keys.indymedia.org/) Fingerprint = EA30 D855 D50F 90CD F54D 0698 0713 C3ED F586 2A37
