Hacking the OpenJDK

[Lillian Angel]

Camel Aissani wrote:
>
> Okay after reading the guide and readme. I set few environment variables :
>
> ALT_BOOTDIR=$HOME/devel/hg/icedtea/bootstrap/jdk1.6.0
> ALT_BINARY_PLUGS_PATH=$HOME/plugs
> ALT_CUPS_HEADERS_PATH=/usr/include
> ALT_FREETYPE_LIB_PATH=/usr/lib
> ALT_FREETYPE_HEADERS_PATH=/usr/include
>
> After that the "make sanity" was ended successfully.
> Currently, I can't compile the jdk because of this stack trace:
>
> Exception in thread "main" java.lang.NoClassDefFoundError: 
> org/apache/tools/ant/launch/Launcher
> Caused by: java.lang.ClassNotFoundException: 
> org.apache.tools.ant.launch.Launcher
>         at java.net.URLClassLoader$2.run(URLClassLoader.java:220)
>         at java.security.AccessController.doPrivileged(Native Method)
>         at java.net.URLClassLoader.findClass(URLClassLoader.java:209)
>         at java.lang.ClassLoader.loadClass(ClassLoader.java:323)
>         at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
>         at java.lang.ClassLoader.loadClass(ClassLoader.java:268)
>         at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:336)
> Error: Could not find the main class.
> Error: A JNI error has occurred, please check your installation and 
> try again
>
> I found an email that speaks about this ClassNotFoundException,  but I 
> don't know how I can fix this problem.
> http://mail.openjdk.java.net/pipermail/distro-pkg-dev/2008-February/001203.html
>
> An idea ?

This was fixed. Update the repo

Lillian


>
> Thanks,
> Camel
>
> 2008/3/20, David Herron <David.Herron at sun.com 
> <mailto:David.Herron at sun.com>>:
>
>
>     http://openjdk.java.net/guide/ -- it's still a work in progress
>     and if you have any questions perhaps you can ask in the
>     guide-discuss list to get clarifications.
>
>     Yes you can use an IDE to work on OpenJDK changes but your 'IDE'
>     can also be "ed" or "vi".  It's up to individual preference.
>
>     In the OpenJDK and OpenJDK6 source trees there are some netbeans
>     projects that can help you get started.  They are in
>     'jdk/make/netbeans' (if I remember the path right)
>
>     The important README's within the source tree are:
>
>         README-builds.html
>         jdk/make/README
>         jdk/make/netbeans/README
>
>     They give information about configuring your environment.
>
>     The recent discussion you're seeing about Visual Studio is very
>     recent.  Most of us are on other platforms.  I regularly compile
>     on Ubuntu w/o problem.  No need to be on Windows unless that's
>     your cup of tea, of course.
>
>     In Elliotte's article, if he'd read the README's beforehand he
>     woulda had an easier time ;-)
>
>     - David Herron
>
>
>
>     Camel Aissani wrote:
>>     Hi,
>>
>>     I would like to contribute to the openjdk, but I wasn't able to
>>     find a document that explains how to make my first hack :(
>>     At this time, I have a fedora 8 distribution and I had compile
>>     the entire icedtea project.
>>     Many thanks to Sylvain for your french wiki it was very useful ;-)
>>
>>     Now I don't know if I can use an IDE to hack (Netbeans,
>>     eclipse...). Sorry for the purist...I am a javaboy and I like my IDE.
>>     In many emails about icedtea, I read a lot of stuff arround
>>     Visual Studio...I hope that I will be able to hack without windows.
>>
>>     Two days ago, I tried to compile the openjdk in debug mode. I
>>     failed...
>>     I read this article
>>     http://today.java.net/pub/a/today/2007/11/29/building-the-jdk.html
>>     where there is a lot information.
>>     Could you give me other links where I can find a simpliest way to
>>     compile the jdk on fedora?
>>
>>     Cheers
>>     Camel
>>
>>
>>     2008/3/20, Mark Wielaard <mark at klomp.org <mailto:mark at klomp.org>>:
>>
>>         Hi Sylvain,
>>
>>
>>         On Wed, 2008-03-19 at 22:33 +0100, Sylvain Beucler wrote:
>>         > (My apologizes if that's not the right list to ask, I
>>         didn't find
>>         > other contact adresses)
>>
>>
>>         You are right. There is no other contact address. This list
>>         is it!
>>
>>
>>         > I would like to contribute IcedTea build instructions for
>>         Debian on
>>         > the wiki. I have a French version here:
>>         > http://doc.cliss21.com/index.php?title=IcedTea
>>
>>
>>         Nice and thanks!
>>
>>
>>         > Apparently account creation is blocked.
>>         > What is the procedure to register one?
>>
>>
>>         Sorry about the account creation being blocked.
>>         Unfortunately spammers learned how to create accounts and...
>>         sniff :{
>>         So for now you just have to ask on this list and an account
>>         for your
>>         email address will be created. I just did this for you.
>>
>>         Cheers,
>>
>>
>>         Mark
>>
>>
>