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Re: JNI work fine with default Java5 but not with javase6dp8




On 21-Apr-08, at 12:38 PM, Greg Guerin wrote:

Youssef wrote:

I compiled my libDrm in my machine 64-bit.

Exactly how did you compile it? Did you use Xcode or the command- line?
Which version of Xcode? What command-line.
This is what I use to generate libDrm.jnilib
1- Edit tv.server.DrmNative class and compilte it using Netbeans 6.0. Netbeans is set to use Java6 (Preview8 downloaded from connect.apple.com).
In Terminal ,run
2- javah -classpath /Volumes/Build/Builds_Data/BInstance.build/ classes -jni tv.server.DrmNative
3- cc -g -I/System/Library/Frameworks/JavaVM.framework/Headers -c -o DrmNativeImpl.o DrmNativeImpl.c
4- cc -o libDrm.jnilib DrmNativeImpl.o -framework JavaVM
And I put libDrm.jnilib in /usr/lib/java


and here is output from otool :
>otool -L /usr/lib/java/libDrm.jnilib
/usr/lib/java/libDrm.jnilib:
Drmlib.jnilib (compatibility version 0.0.0, current version 0.0.0)
/System/Library/Frameworks/JavaVM.framework/Versions/A/JavaVM (compatibility version 1.0.0, current version 1.0.0)
/usr/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current version 1.0.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 111.0.0)


thanks
-Ucef



file /usr/lib/java/libDrm.jnilib
/usr/lib/java/libDrm.dylib: Mach-O dynamically linked shared library i386
...
I m sure that my jnilib is for 64-bit

The output from the 'file' command strongly suggests otherwise.

It says the library was compiled only for i386, which is the 32-bit
architecture. This is why your lib worked on Java 5: Java 5 has a 32-bit
implementation, and that is also the command-line default. Java 6 DP has
no 32-bit implementation, so your 32-bit lib can't possibly work on Java 6
DP.


If you believe your lib was compiled for 64-bit, you will have to tell us
what you did to build the lib, with what tools and settings, because the
evidence says the build procedure didn't do what you expected.


 -- GG



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References: 
 >Re: JNI work fine with default Java5 but not with javase6dp8 (From: Greg Guerin <email@hidden>)



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