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  webstart with nativelibs  (Read 2760 times)
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Offline emzic

Senior Member





« Posted 2009-11-08 21:37:08 »

hello, when i look at some webstart files, i see that they use something called nativelib. these jars seem to contain just the nativelibraries (dlls, so, ...)

example:
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   <resources os="Linux">
      <nativelib href="lwjgl-native.jar"/>
   </resources>
   
   <resources os="Windows">
      <nativelib href="lwjgl-native.jar"/>
   </resources>

   <resources os="Mac OS X">
      <nativelib href="lwjgl-native.jar"/>  
   </resources>


my questions is: how do you create these nativelib-jars? is there an ant task for this?

thanks!

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webstart blendinspect - OpenGL BlendingModes visualization.
Offline broumbroum

Junior Member





« Reply #1 - Posted 2009-11-08 21:46:38 »

of course, native .jar are are common packages that may be built using jar command or ant <jar> tasks.
Those jar have to be signed with the same certificate (same person) as the main .jar that holds your jnlp app.
One single rule is necessary : all native libs must be found on the / root path of the .jar.
e.g.
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 - myNative.jar
     - META-INF/
         + Manifest
     - myJNINativeLib.dll|jnilib|dylib|so
     - anotherJNINativeLib.dll|jnilib|dylib|so
     - myPackage/
       + myClass.class
     -...


::::... :..... :::::: ;;;:::™ b23:production 2006 GNU/GPL @ http://b23prodtm.webhop.info
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Java (1.6u10 plz) Web Start pool
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Offline Nate

JGO Kernel


Medals: 145
Projects: 4
Exp: 14 years


Esoteric Software


« Reply #2 - Posted 2009-11-08 23:18:33 »

They are just zip files containing the native libs named as ".jar". My native lib JARs don't even contain a META-INF folder.

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Offline emzic

Senior Member





« Reply #3 - Posted 2009-11-09 17:47:09 »

thank you!

one more question: how do i differentiate between 32bit and 64bit natives in the jnlp file?

www.embege.com - personal website
webstart blendinspect - OpenGL BlendingModes visualization.
Offline Nate

JGO Kernel


Medals: 145
Projects: 4
Exp: 14 years


Esoteric Software


« Reply #4 - Posted 2009-11-09 21:30:29 »

You don't, only by OS. Put both 32 and 64 bit libs in the JAR for each OS.

Offline emzic

Senior Member





« Reply #5 - Posted 2009-11-09 21:57:42 »

thanks.

(although i dont like this, cause it makes the users download stuff that they dont gonna need)

www.embege.com - personal website
webstart blendinspect - OpenGL BlendingModes visualization.
Offline gouessej
« Reply #6 - Posted 2009-11-12 11:35:30 »

Use "arch" value:
http://lopica.sourceforge.net/os.html
If it is amd64 or x86_64, use 64-bits natives, otherwise use 32-bits natives. I don't know if you wish to support ppc, sparc, sparcv9, etc...

However, the default JNLP file of LWJGL does not do this distinction and it works fine.

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