On Tue, 2008-04-29 at 16:50 -0500, Gustavo Guillermo Perez wrote: > Hello list, I don't know if is this the proper list to ask, I've working on > embedded systems with java, so this year I decide to upgrade my base system, > and as always build it from scratch. > > As JVM, I use kaffe, cause was portable and able to be changed for building > on > uClibc, so kaffe has no more a version of classpath embedded anymore, they > use now Gnu Classpath as an external required tool. > > I have gnu gcj from gcc 4.2.3. > > Trying to compile Gnu Classpath 0.97.1 it ask for a javah command, but cause > I > do not have already a JVM I don't have this feature, so I need Java to build > Classpath and Classpath to build Java.
There's a javah in GCJ. > > Then I was able to build kaffe 1.1.7 that has an embedded older version of > classpath. Next time I ran configure script, it pass the javah requirement, > but stucks on gcj, that not support gcj -C, debbuging it is: -target > 1.5 -source 1.5, gcj does not known about thoose options. > > Trying to get an older version of Gnu Classpath, I run ./configure from 0.90 > version, it detects gcj, and builds properly and fine, but is old.... so if > we talk as Gnu Classpath as an alternative to Sun's JVM... How can I build > the lastest version 0.97.1 or newer just having gcj it means without a > classpath. Well, building with GCJ works, if it's 1.5 capable. You could also build the new GNU Classpath with your old Kaffe installation or cross-compile it. > > I'll gonna try gcj from another gcc version may be unstable or new 4.3.0 but > I > don't know about this feature 1.5, may be is something related to CLASSPATH > variable, I set this variable to a wide set of combinations including the > path to glibj.zip from Gnu Classpath 0.90. > > I have jikes too, but classpath complains about -Xlint:unchecked works... > configure: error: The Java compiler javac -Xlint:unchecked failed You can't build current versions with Jikes anymore. You need something like Javac, ECJ, or a 1.5 GCJ. > > uLinuxIV kaffe # jikes --version > Jikes Compiler - Version 1.22 - 3 October 2004 > uLinuxIV kaffe # java -version > java full version "kaffe-1.4.2" > kaffe VM "1.1.7" > Engine: Just-in-time v3 Version: 1.1.7 Java Version: 1.4 > Heap defaults: minimum size: 5 MB, maximum size: unlimited > Stack default size: 256 KB > > I'll keep trying :-| - twisti
