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Hi list! |
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I would like to work on gcj for Gentoo. |
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I spoke with Andrew Cowie. He suggested me to send my ideas and |
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questions to this list to discuss. |
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I know gcj is tricky. It has various issues. Still, it is quite interesting |
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to work on gcj. But as gcj is in portage right now it is hard to use for |
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an ebuild writer like myself. Just two main issues: |
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|
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* dependency tracking |
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* JDK-like environment |
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However, I may write my ideas and questions: |
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|
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I thought in a gcj-4.1 / ecj combination. Use ecj to bytecompile Java |
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source to jar with gcj as backend. Then use gcj to create native |
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executables or libraries out of that jar files. Creating a database |
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via gcj-dbtool for jar / native code resolution. If possible Java to |
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native. |
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|
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The steps to take to get there |
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|
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* get gcj-jdk in portage |
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* use ecj as gcjs bytecompiler |
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* handle it via Gentoos java config |
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(gcj bytecompile is broken, |
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see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18131) |
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|
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(later) |
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|
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* Java to native compilation |
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* utilize gcj-dbtool for jar / native code resolution |
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(Whatever way it is wanted.) |
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|
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To stay sane we want to hack the ant-core dependency out of |
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eclipse-ecj package. Just try to compile ant-core with gcj. I have |
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ugly hacks (gcc PR19870) for ant-core-1.6.2 to bytecompile with gcj. |
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No way. |
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Then I have to get ant-core-1.6.5 to bytecompile with gcj / ecj which |
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fails right now - did not yet investigate any further. After these steps |
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are done we have the base (for interested ones to test gcj). |
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|
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I am no Java programmer. |
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I do packaging stuff and ugly hacking. ;) |
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I will try to integrate gcj into Gentoos next Java config utility. |
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Just not to do the work of integration twice. |
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What I did already: |
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* tweaked Andrew's gcj-jdk ebuild |
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-> ebuild / eclass split |
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* gcj-ecj ebuild |
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-> Java to native: ecj binary |
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The very next steps should be: |
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|
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* better gcj-jdk ebuild |
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* fix ant-core issue with ecj |
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Then, get back to plan. |
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Reference - my overlay for these two ebuilds: |
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http://geki.ath.cx/hacks/gcj-overlay-2.tar.bz2 |
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Thanks in advance for help! |
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Regards, |
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Hanno |
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-- |
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