"JNI : Linux java.lang.UnsatisfiedLinkError

846238

Hi All,



My bundles use JNI to communicate to the native code.

My native code further uses Sqlite3 libraries.



Please let me know how to link the the libraries:

Command I have used to generate the JNI shared library:

1.

gcc -I/java/jdk/include -I/java/jdk/include/genunix -c DbOperations.c -o DbOperations.o

ld -shared -f /usr/lib/libuuid.so DbOperations.o -o DbNativeInterface.so



2.

gcc -o libDbNativeInterface.so -shared -Wl,-soname,DbNativeInterface.so

-I /usr/lib/jvm/java-6-sun-1.6.0.22/include/

-I /usr/lib/jvm/java-6-sun-1.6.0.22/include/linux/ -I /<My path to>/SQLite/inc/ DbOperation.c



Using this so file in the bundle throws following error:

Couldn't start bundle: DataAccess (#22) (due to: java.lang.UnsatisfiedLinkError:

/home/user/knopflerfish_osgi_sdk_3.0.0/osgi/fwdir/bs/22/jar0/libDbNativeInterface.so:

/home/user/knopflerfish_osgi_sdk_3.0.0/osgi/fwdir/bs/22/jar0/libDbNativeInterface.so: undefined symbol: sqlite3_open)

java.lang.UnsatisfiedLinkError: /home/user/knopflerfish_osgi_sdk_3.0.0/osgi/fwdir/bs/22/jar0/libDbNativeInterface.so:

/home/user/knopflerfish_osgi_sdk_3.0.0/osgi/fwdir/bs/22/jar0/libDbNativeInterface.so: undefined symbol: sqlite3_open



Please guide with solutions or suggestions if any

Thank you

Vinay

802316

Are you sure the sqllite shared library is being loaded? Where have you included it in the command line?

846238

Hi,

Yes, as you have noticed I have not include that in the command line. But, I have also tried the following command:

gcc -o libDbNativeInterface.so -shared -Wl,-soname,DbNativeInterface.so -I /usr/lib/jvm/java-6-sun-1.6.0.22/include/ -I /usr/lib/jvm/java-6-sun-1.6.0.22/include/linux/ -I /home/user/VW_Sqlite_Test/SQLite/inc/ DbOperation.c -L /home/user/VW_Sqlite_Test/SqliteDynamicLib/libsqlitejdbc.so

I don't know if I'm doing right. Please correct me.

Thanks
Vinay