[gentoo-java] Feature Request: Binary Java packages instead of bytecode

[gentoo-java] Feature Request: Binary Java packages instead of bytecode

[Rene Bartsch]

Hi,

running Java bytecode in an VM is quite slow but compiling Java in
host-optimized binaries would improve performance a lot.

Because of that I want to propose a use-flag "java-binary" causing
additional functions in the java eclasses to compile the ebuilds in
host-optimized binary code.

Have Phun with Gentoo

Renne


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Re: [gentoo-java] Feature Request: Binary Java packages instead of bytecode

[Miroslav Šulc]

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I know very little about binary java packages but there is gcj-overlay
that focuses on this. There is also wiki page.

http://overlays.gentoo.org/svn/proj/java/gcj-overlay/
http://overlays.gentoo.org/proj/java/wiki/GCJ_as_a_JDK

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Miroslav Šulc



Rene Bartsch wrote:
> Hi,
>
> running Java bytecode in an VM is quite slow but compiling Java in
> host-optimized binaries would improve performance a lot.
>
> Because of that I want to propose a use-flag "java-binary" causing
> additional functions in the java eclasses to compile the ebuilds in
> host-optimized binary code.
>
> Have Phun with Gentoo
>
> Renne
>
>
>   

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Re: [gentoo-java] Feature Request: Binary Java packages instead of bytecode

[Alistair Bush]

On Monday 09 October 2006 02:15, Rene Bartsch wrote:
> Hi,
>
> running Java bytecode in an VM is quite slow but compiling Java in
> host-optimized binaries would improve performance a lot.
>
> Because of that I want to propose a use-flag "java-binary" causing
> additional functions in the java eclasses to compile the ebuilds in
> host-optimized binary code.
>
> Have Phun with Gentoo
>
> Renne

Renne.  I suggest that you look at the java upgrade guide and also at

http://overlays.gentoo.org/proj/java/wiki/GCJ_as_a_JDK

Basically as a summary.

the new java system that is in the process of being rolled out (plan is to 
only have it in ~arch for 1 more week).  This system will allow a user (such 
as yourself) to choose the jdk they would like to build their java packages.  
This includes selecting GCJ as you jdk.  So hopefully and eventually once GCJ 
becomes stable enough the whole process of compiling java to machine code 
will be in the stable tree.

Therefore.  a use flag isn't needed :)  in fact the java team is in the 
process of removing the jikes use flag for this very reason

Alistair
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