Fwd: IcedTea built on Gentoo

Hi am forwarding this to the Gentoo Java mailing this for anyone who is 
interested.  It was posted by Kyle Galloway from Redhat to 
[email protected]

I would just like to say a big thank you to him for sharing this.

Alistair (ali_bush)
Gentoo Java Developer.

ps.  I suppose this means someones going to have to make a ebuild for it ;) .

*********************************************************************************

I have now successfully built IcedTea using ecj on Gentoo.  Included in
this e-mail are instructions on how to do it for all those Gentoo users
out there who want to hack on IcedTea.

This was done on Gentoo 2007.0 ~x86

1. Required Packages

emerge -av xalan xalan-serializer xerces cups lesstif eclipse-ecj

Some of those are probably already installed, but -av will tell you and
let you confirm whether you want to rebuild any of those.

2. Build a 1.5 compliant libgcj  (substitute the stuff in <> with
directories of your choice).

svn co svn://gcc.gnu.org/svn/gcc/branches/redhat/gcc-4_1-branch gcc
mkdir gcc-build
cd gcc-build
../gcc/configure --prefix=<installation dir> --exec-prefix=<installation
dir>/<architecture>
make && make install

3. Modify icedtea/javac.in.

In order to get IcedTea to build with your built libgcj you will need to
modify the attached patch to point to your libgcj-4.1.3.jar, then apply
it to javac.in.

vim javac_in.patch
cd icedtea
patch -p0 < javac_in.patch

4. Configure and build IcedTea

./configure --with-ecj=/usr/bin/ecj-3.2
--with-ecj-jar=/usr/share/eclipse-ecj-3.2/lib/ecj.jar
--with-libgcj-jar=<gcc installation dir>/share/java/libgcj-4.1.3.jar
--with-xalan2-jar=/usr/share/xalan/lib/xalan.jar
--with-xalan2-serializer-jar=/usr/share/xalan-serializer/lib/serializer.jar
--with-xerces2-jar=/usr/share/xerces-2/lib/xercesImpl.jar
make

And there you have it.

Kyle

diff -r 123c2340f9cf javac.in
--- a/javac.in	Thu Jun 07 19:21:19 2007 -0400
+++ b/javac.in	Wed Jun 13 10:20:13 2007 -0400
@@ -1,4 +1,10 @@
 #!/bin/sh
+libgcjjar=/home/user/gcc-install/share/java/libgcj-4.1.3.jar
+
+case "$*" in
+  *-bootclasspath*) ;;
+  *) bcoption="-bootclasspath $libgcjjar"
+esac
 
 # Work around ecj's inability to handle duplicate command-line
 # options.
@@ -21,4 +27,4 @@ fi
 fi
 
 CLASSPATH=@ECJ_JAR@${CLASSPATH:+:}$CLASSPATH \
-  @JAVA@ org.eclipse.jdt.internal.compiler.batch.Main -1.5 -nowarn $NEW_ARGS
+  @JAVA@ org.eclipse.jdt.internal.compiler.batch.Main -1.5 -nowarn $bcoption $NEW_ARGS