----- Original Message ----- > On August 20, 2015 7:35:37 PM GMT+02:00, Andrew Hughes > <gnu.and...@redhat.com> wrote: > >----- Original Message ----- > >> snip... > >> > > >> > Having classpath (with binary files!) In the GCC SVN (or future > >git) > >> > repository is a significant burden, not to mention the size of the > >> > distributed source tarball. > >> > > >> > If we can get rid of that that would be a great step in reducing > >the > >> > burden. > >> > > >> > Iff we can even without classpath build enough of java to be useful > >(do you > >> > really need gcj or only gij for bootstrapping openjdk? After all > >ecj is > >> > just > >> > a drop-in to gcc as well). > >> > >> All the Java compilers are written in Java (ecj & javac). So to run > >them, you > >> need a JVM and its class library. > >> > >> It's those binary files which allow gcj to bootstrap the stack. If > >OpenJDK > >> had a minimal binary class library, it would be able to bootstrap > >itself. > >> > >> But, as things stand, you need enough of the JDK to run a Java > >compiler > >> and build the OpenJDK class libraries. GCJ currently fulfils that > >need > >> where there isn't already an OpenJDK installation available. > >> -- > > > >Actually, this makes me think... > > > >IcedTea already depends on CACAO and JamVM for alternate builds of > >OpenJDK. We could instead include the bytecode binaries for GNU > >Classpath > >in IcedTea, bootstrap JamVM and use that to bootstrap OpenJDK. That > >would remove our dependency on gcj and make IcedTea largely > >self-sufficient. > >It would also mean we could drop a bunch of conditional code which > >depends > >on what the system bootstrap JDK is, because it would always be the > >in-tree > >solution. > > > >We'd still need more than six months to make this transition though, > >as such a change really needs time for testing. > > OK, so how about deprecating Java for GCC 6 by removing it from the default > languages and removing it for GCC 7 or before we switch to git (whatever > happens earlier?) >
Yeah, that's what I suggested at the end of [0] so +1 from me. As Joseph says, I don't think the move to git is relevant to this. If it had happened sooner, though, I'd have properly merged GNU Classpath more frequently... ;) > Richard. > > > [0] https://gcc.gnu.org/ml/java-patches/2015-q3/msg00029.html -- Andrew :) Senior Free Java Software Engineer Red Hat, Inc. (http://www.redhat.com) PGP Key: ed25519/35964222 (hkp://keys.gnupg.net) Fingerprint = 5132 579D D154 0ED2 3E04 C5A0 CFDA 0F9B 3596 4222 PGP Key: rsa4096/248BDC07 (hkp://keys.gnupg.net) Fingerprint = EC5A 1F5E C0AD 1D15 8F1F 8F91 3B96 A578 248B DC07
