Building JamVM and GNU Classpath and Jikes (for Java support in webOS) with scratchbox2

Requirements

First, follow the tutorial WebOS Internals PDK to set up the cross compilation environment.

Next install gcj needed for compiling Gnu Classpath

sudo apt-get install gcj

Compiling

Create your working folder :

cd /home/ubuntu
mkdir java-project
cd java-project

Go in ARM mode in your ScratchBox 2 :

sb2 -M /srv/preware/cross-compile/staging/mapping-armv7

Install GNU Classpath

Goal : implement almost all of the classes from Java J2SE 1.4 and 5.0.

GNU Classpath at Wikipedia : http://en.wikipedia.org/wiki/GNU_Classpath

Create the folders :

mkdir -p /usr/local/bin/
mkdir -p /usr/local/include/
mkdir -p /usr/local/lib/
mkdir -p /usr/local/share/

wget ftp://ftp.gnu.org/gnu/classpath/classpath-0.98.tar.gz
tar xzvf classpath-0.98.tar.gz
cd classpath-0.98
./configure --prefix=/usr/local --disable-examples --without-x --disable-gtk-peer --disable-gconf-peer --disable-plugin --disable-alsa --disable-dssi
make
make install
cd ..

Install Zlib needed by JamVM

cd /srv/preware/cross-compile/packages/common
rm -Rf /srv/preware/cross-compile/packages/common/zlib/build
make -C zlib ARCH=armv7 stage

Install JamVM

Goal : can launch Java program

JamVM at Wikipedia : http://en.wikipedia.org/wiki/JamVM

cd /home/ubuntu/java-project
wget http://freefr.dl.sourceforge.net/project/jamvm/jamvm/JamVM%201.5.4/jamvm-1.5.4.tar.gz
tar xzvf jamvm-1.5.4.tar.gz
cd jamvm-1.5.4
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib
export LD_RUN_LIBRARY_PATH=$LD_RUN_LIBRARY_PATH:/usr/local/lib
LDFLAGS="-L/usr/local/lib" CFLAGS="-I/usr/local/include" ./configure --prefix=/usr/local --with-classpath-install-dir=/usr/local
make
make install
cd ..

Install Jikes

Goal : can compile Java program

Jikes at Wikipedia : http://en.wikipedia.org/wiki/Jikes_RVM

website : http://sourceforge.net/projects/jikes/files/ and http://jikes.sourceforge.net/

wget http://freefr.dl.sourceforge.net/project/jikes/Jikes/1.22/jikes-1.22.tar.bz2
bzip2 -d jikes-1.22.tar.bz2
tar xvf jikes-1.22.tar
cd jikes-1.22 
./configure --prefix=/usr/local
make
make install
cd ..

Quit Scratch Box : exit

Installing the files on your device

cd /srv/preware/cross-compile/staging/armv7/usr
sudo chown -R root:root *
sudo tar cvf local.tar *
copy the local.tar on your webos device connected as USB key on your computer

On your computer connect at your webOS device

novacom -t open tty://

Move the files in the good folders :

cd /media/internal
mkdir java-project
mv local.tar java-project
cd java-project
tar Pxvf local.tar
chmod -R 755 *
chown root:root *
cd bin
cp -p * /usr/local/bin
cp -p -r include lib man share /usr/local

Fix missing symbolic links :

cd /usr/local/lib
ln -s libjvm.so.0.0.0 libjvm.so
ln -s libjvm.so.0.0.0 libjvm.so.0
ln -s libz.so.1.2.3 libz.so
ln -s libz.so.1.2.3 libz.so.1
ln -s /usr/local/share/classpath/glibj.zip rt.jar
cd classpath
ln -s libjavaio.so.0.0.0 libjavaio.so
ln -s libjavaio.so.0.0.0 libjavaio.so.0
ln -s libjavalangmanagement.so.0.0.0 libjavalangmanagement.so
ln -s libjavalangmanagement.so.0.0.0 libjavalangmanagement.so.0
ln -s libjavalangreflect.so.0.0.0 libjavalangreflect.so
ln -s libjavalangreflect.so.0.0.0 libjavalangreflect.so.0
ln -s libjavalang.so.0.0.0 libjavalang.so
ln -s libjavalang.so.0.0.0 libjavalang.so.0
ln -s libjavanet.so.0.0.0 libjavanet.so
ln -s libjavanet.so.0.0.0 libjavanet.so.0
ln -s libjavanio.so.0.0.0 libjavanio.so
ln -s libjavanio.so.0.0.0 libjavanio.so.0
ln -s libjavautil.so.0.0.0 libjavautil.so
ln -s libjavautil.so.0.0.0 libjavautil.so.0

Files installed by each program

Gnu Classpath

[SB2 mapping-armv7 armv7] ubuntu@ubuntu-VirtualBox classpath-0.98 $ ls -l /usr/local/bin total 52 -rwxr-xr-x 1 ubuntu ubuntu 2073 2012-01-01 19:23 gappletviewer -rwxr-xr-x 1 ubuntu ubuntu 2058 2012-01-01 19:23 gjar -rwxr-xr-x 1 ubuntu ubuntu 2070 2012-01-01 19:23 gjarsigner -rwxr-xr-x 1 ubuntu ubuntu 2062 2012-01-01 19:23 gjavah -rwxr-xr-x 1 ubuntu ubuntu 2113 2012-01-01 19:23 gjdoc -rwxr-xr-x 1 ubuntu ubuntu 2066 2012-01-01 19:23 gkeytool -rwxr-xr-x 1 ubuntu ubuntu 2084 2012-01-01 19:23 gnative2ascii -rwxr-xr-x 1 ubuntu ubuntu 2060 2012-01-01 19:23 gorbd -rwxr-xr-x 1 ubuntu ubuntu 2060 2012-01-01 19:23 grmic -rwxr-xr-x 1 ubuntu ubuntu 2060 2012-01-01 19:23 grmid -rwxr-xr-x 1 ubuntu ubuntu 2074 2012-01-01 19:23 grmiregistry -rwxr-xr-x 1 ubuntu ubuntu 2075 2012-01-01 19:23 gserialver -rwxr-xr-x 1 ubuntu ubuntu 2070 2012-01-01 19:23 gtnameserv

[SB2 mapping-armv7 armv7] ubuntu@ubuntu-VirtualBox classpath-0.98 $ ls -l /usr/local/include total 80 -rw-r--r-- 1 ubuntu ubuntu 3516 2012-01-01 19:23 jawt.h -rw-r--r-- 1 ubuntu ubuntu 2349 2012-01-01 19:23 jawt_md.h -rw-r--r-- 1 ubuntu ubuntu 66655 2012-01-01 19:23 jni.h -rw-r--r-- 1 ubuntu ubuntu 1547 2012-01-01 19:23 jni_md.h

[SB2 mapping-armv7 armv7] ubuntu@ubuntu-VirtualBox classpath-0.98 $ ls -l /usr/local/lib total 12 drwxr-xr-x 2 ubuntu ubuntu 4096 2012-01-01 19:23 classpath -rw-r--r-- 1 ubuntu ubuntu 1437 2012-01-01 19:23 logging.properties drwxr-xr-x 2 ubuntu ubuntu 4096 2012-01-01 19:23 security

[SB2 mapping-armv7 armv7] ubuntu@ubuntu-VirtualBox classpath-0.98 $ ls -l /usr/local/lib/classpath total 1228 -rwxr-xr-x 1 ubuntu ubuntu 806 2012-01-01 19:23 libjavaio.la lrwxrwxrwx 1 ubuntu ubuntu 18 2012-01-01 19:23 libjavaio.so -> libjavaio.so.0.0.0 lrwxrwxrwx 1 ubuntu ubuntu 18 2012-01-01 19:23 libjavaio.so.0 -> libjavaio.so.0.0.0 -rwxr-xr-x 1 ubuntu ubuntu 177244 2012-01-01 19:23 libjavaio.so.0.0.0 -rwxr-xr-x 1 ubuntu ubuntu 818 2012-01-01 19:23 libjavalang.la -rwxr-xr-x 1 ubuntu ubuntu 878 2012-01-01 19:23 libjavalangmanagement.la lrwxrwxrwx 1 ubuntu ubuntu 30 2012-01-01 19:23 libjavalangmanagement.so -> libjavalangmanagement.so.0.0.0 lrwxrwxrwx 1 ubuntu ubuntu 30 2012-01-01 19:23 libjavalangmanagement.so.0 -> libjavalangmanagement.so.0.0.0 -rwxr-xr-x 1 ubuntu ubuntu 25052 2012-01-01 19:23 libjavalangmanagement.so.0.0.0 -rwxr-xr-x 1 ubuntu ubuntu 860 2012-01-01 19:23 libjavalangreflect.la lrwxrwxrwx 1 ubuntu ubuntu 27 2012-01-01 19:23 libjavalangreflect.so -> libjavalangreflect.so.0.0.0 lrwxrwxrwx 1 ubuntu ubuntu 27 2012-01-01 19:23 libjavalangreflect.so.0 -> libjavalangreflect.so.0.0.0 -rwxr-xr-x 1 ubuntu ubuntu 24773 2012-01-01 19:23 libjavalangreflect.so.0.0.0 lrwxrwxrwx 1 ubuntu ubuntu 20 2012-01-01 19:23 libjavalang.so -> libjavalang.so.0.0.0 lrwxrwxrwx 1 ubuntu ubuntu 20 2012-01-01 19:23 libjavalang.so.0 -> libjavalang.so.0.0.0 -rwxr-xr-x 1 ubuntu ubuntu 378668 2012-01-01 19:23 libjavalang.so.0.0.0 -rwxr-xr-x 1 ubuntu ubuntu 812 2012-01-01 19:23 libjavanet.la lrwxrwxrwx 1 ubuntu ubuntu 19 2012-01-01 19:23 libjavanet.so -> libjavanet.so.0.0.0 lrwxrwxrwx 1 ubuntu ubuntu 19 2012-01-01 19:23 libjavanet.so.0 -> libjavanet.so.0.0.0 -rwxr-xr-x 1 ubuntu ubuntu 263348 2012-01-01 19:23 libjavanet.so.0.0.0 -rwxr-xr-x 1 ubuntu ubuntu 812 2012-01-01 19:23 libjavanio.la lrwxrwxrwx 1 ubuntu ubuntu 19 2012-01-01 19:23 libjavanio.so -> libjavanio.so.0.0.0 lrwxrwxrwx 1 ubuntu ubuntu 19 2012-01-01 19:23 libjavanio.so.0 -> libjavanio.so.0.0.0 -rwxr-xr-x 1 ubuntu ubuntu 311502 2012-01-01 19:23 libjavanio.so.0.0.0 -rwxr-xr-x 1 ubuntu ubuntu 818 2012-01-01 19:23 libjavautil.la lrwxrwxrwx 1 ubuntu ubuntu 20 2012-01-01 19:23 libjavautil.so -> libjavautil.so.0.0.0 lrwxrwxrwx 1 ubuntu ubuntu 20 2012-01-01 19:23 libjavautil.so.0 -> libjavautil.so.0.0.0 -rwxr-xr-x 1 ubuntu ubuntu 27292 2012-01-01 19:23 libjavautil.so.0.0.0

[SB2 mapping-armv7 armv7] ubuntu@ubuntu-VirtualBox classpath-0.98 $ ls -l /usr/local/lib/security total 4 -rw-r--r-- 1 ubuntu ubuntu 2489 2012-01-01 19:23 classpath.security

[SB2 mapping-armv7 armv7] ubuntu@ubuntu-VirtualBox classpath-0.98 $ ls -l /usr/local/share total 12 drwxr-xr-x 2 ubuntu ubuntu 4096 2012-01-01 19:23 classpath drwxr-xr-x 2 ubuntu ubuntu 4096 2012-01-01 19:22 info drwxr-xr-x 3 ubuntu ubuntu 4096 2012-01-01 19:22 man [SB2 mapping-armv7 armv7] ubuntu@ubuntu-VirtualBox classpath-0.98 $ ls -l /usr/local/share/classpath total 10780 -rw-r--r-- 1 ubuntu ubuntu 9832050 2012-01-01 19:22 glibj.zip -rw-r--r-- 1 ubuntu ubuntu 1204211 2012-01-01 19:23 tools.zip [SB2 mapping-armv7 armv7] ubuntu@ubuntu-VirtualBox classpath-0.98 $ ls -l /usr/local/share/info total 292 -rw-r--r-- 1 ubuntu ubuntu 83532 2012-01-01 19:22 cp-hacking.info -rw-r--r-- 1 ubuntu ubuntu 106990 2012-01-01 19:22 cp-tools.info -rw-r--r-- 1 ubuntu ubuntu 98304 2012-01-01 19:22 cp-vmintegration.info -rw-r--r-- 1 ubuntu ubuntu 815 2012-01-01 19:22 dir [SB2 mapping-armv7 armv7] ubuntu@ubuntu-VirtualBox classpath-0.98 $ ls -l /usr/local/share/man total 4 drwxr-xr-x 2 ubuntu ubuntu 4096 2012-01-01 19:23 man1 [SB2 mapping-armv7 armv7] ubuntu@ubuntu-VirtualBox classpath-0.98 $ ls -l /usr/local/share/man/man1 total 164 -rw-r--r-- 1 ubuntu ubuntu 7997 2012-01-01 19:22 gappletviewer.1 -rw-r--r-- 1 ubuntu ubuntu 5592 2012-01-01 19:23 gcjh.1 -rw-r--r-- 1 ubuntu ubuntu 5918 2012-01-01 19:23 gjar.1 -rw-r--r-- 1 ubuntu ubuntu 9590 2012-01-01 19:23 gjarsigner.1 -rw-r--r-- 1 ubuntu ubuntu 5750 2012-01-01 19:23 gjavah.1 -rw-r--r-- 1 ubuntu ubuntu 35310 2012-01-01 19:23 gjdoc.1 -rw-r--r-- 1 ubuntu ubuntu 35536 2012-01-01 19:23 gkeytool.1 -rw-r--r-- 1 ubuntu ubuntu 4594 2012-01-01 19:23 gnative2ascii.1 -rw-r--r-- 1 ubuntu ubuntu 4825 2012-01-01 19:23 gorbd.1 -rw-r--r-- 1 ubuntu ubuntu 5084 2012-01-01 19:23 grmid.1 -rw-r--r-- 1 ubuntu ubuntu 5036 2012-01-01 19:23 grmiregistry.1 -rw-r--r-- 1 ubuntu ubuntu 4512 2012-01-01 19:23 gserialver.1 -rw-r--r-- 1 ubuntu ubuntu 4592 2012-01-01 19:23 gtnameserv.1

JamVM

[SB2 mapping-armv7 armv7] ubuntu@ubuntu-VirtualBox jamvm-1.5.4 $ ls -l /usr/local/bin total 444 -rwxr-xr-x 1 ubuntu ubuntu 400821 2012-01-01 19:38 jamvm

[SB2 mapping-armv7 armv7] ubuntu@ubuntu-VirtualBox jamvm-1.5.4 $ ls -l /usr/local/include total 108 -rw-r--r-- 1 ubuntu ubuntu 14042 2012-01-01 19:38 jni.h

Note : JamVM replace the jni.h file from Gnu Classpath by his own jni.h file

[SB2 mapping-armv7 armv7] ubuntu@ubuntu-VirtualBox jamvm-1.5.4 $ ls -l /usr/local/lib total 636 -rwxr-xr-x 1 ubuntu ubuntu 817 2012-01-01 19:37 libjvm.la lrwxrwxrwx 1 ubuntu ubuntu 15 2012-01-01 19:37 libjvm.so -> libjvm.so.0.0.0 lrwxrwxrwx 1 ubuntu ubuntu 15 2012-01-01 19:37 libjvm.so.0 -> libjvm.so.0.0.0 -rwxr-xr-x 1 ubuntu ubuntu 556829 2012-01-01 19:37 libjvm.so.0.0.0 lrwxrwxrwx 1 ubuntu ubuntu 46 2012-01-01 19:38 rt.jar -> /usr/local/share/classpath/glibj.zip

[SB2 mapping-armv7 armv7] ubuntu@ubuntu-VirtualBox jamvm-1.5.4 $ ls -l /usr/local/share total 16 drwxr-xr-x 2 ubuntu ubuntu 4096 2012-01-01 19:38 jamvm

[SB2 mapping-armv7 armv7] ubuntu@ubuntu-VirtualBox jamvm-1.5.4 $ ls -l /usr/local/share/jamvm total 24 -rw-r--r-- 1 ubuntu ubuntu 22133 2009-12-31 19:42 classes.zip

Jikes

[SB2 mapping-armv7 armv7] ubuntu@ubuntu-VirtualBox jikes-1.22 $ ls -ltr /usr/local/bin total 8260 -rwxr-xr-x 1 ubuntu ubuntu 8002423 2012-01-01 19:56 jikes

[SB2 mapping-armv7 armv7] ubuntu@ubuntu-VirtualBox jikes-1.22 $ ls -ltr /usr/local/include total 116

-rw-r--r-- 1 ubuntu ubuntu 5794 2012-01-01 19:56 jikesapi.h

[SB2 mapping-armv7 armv7] ubuntu@ubuntu-VirtualBox jikes-1.22 $ ls -ltr /usr/local/share total 20

drwxr-xr-x 3 ubuntu ubuntu 4096 2012-01-01 19:56 doc

[SB2 mapping-armv7 armv7] ubuntu@ubuntu-VirtualBox jikes-1.22 $ ls -ltr /usr/local/share/doc/jikes-1.22 total 12 -rw-r--r-- 1 ubuntu ubuntu 11886 2012-01-01 19:56 license.htm

Links used to do the webOS port

Patches used for the JamVM port for Iphone http://test.saurik.com/iphone/jamvm/

IPhone Java http://web.archive.org/web/20071230000038/http://iphone.fiveforty.net/wiki/index.php/IPhone_Java

Talk:IPhone Java http://web.archive.org/web/20071230050607/http://iphone.fiveforty.net/wiki/index.php/Talk:IPhone_Java