[vtkusers] Wrapping Java

[Daniel Sáez Domingo]

Hi Jeff,

   I've tried to create the jnilib like you has said but I have some error. 
Perhaps you would know how solve it.
I've tried two ways and both have the same final.
a) Like I have all the .o of the source files that are going to make the 
library, I do:

:src/VTK/Common$# c++ -bundle 
-I/System/Library/Frameworks/JavaVM.framework/Headers -o 
libvtkCommonJava.jnilib -framework JavaVM *Java.o

and the eror is:
/usr/bin/ld: Undefined symbols:
_AddClippingPlane__17vtkAbstractMapperP8vtkPlane
_RemoveAllClippingPlanes__17vtkAbstractMapper
_RemoveClippingPlane__17vtkAbstractMapperP8vtkPlane
_SetClippingPlanes__17vtkAbstractMapperP9vtkPlanes
_ShallowCopy__17vtkAbstractMapperPB0
_vtkJavaCreateNewJavaStubForObject__FP7JNIEnv_P9vtkObject
_vtkJavaCreateNewJavaStub__FP7JNIEnv_PCcPv
_vtkJavaGetId__FP7JNIEnv_P8_jobject
_vtkJavaGetObjectFromPointer__FPv
_vtkJavaGetPointerFromObject__FP7JNIEnv_P8_jobjectPc
_vtkJavaMakeJavaString__FP7JNIEnv_PCc
_vtkJavaRegisterCastFunction__FP7JNIEnv_P8_jobjectiPv
_vtkJavaUTFToChar__FP7JNIEnv_P8_jstring
_DeepCopy__20vtkAbstractTransformPB0
_GetGlobalWarningDisplay__9vtkObject
_GetInverse__20vtkAbstractTransform
_SetInverse__20vtkAbstractTransformPB0
.......goes on

b)I compile all another time doing:

:src/VTK/Common$#  c++ -bundle 
-I/System/Library/Frameworks/JavaVM.framework/Headers -I/usr/local/src/VTK -o 
libvtkCommonJava.jnilib -framework JavaVM *Java.cxx

but the same error appears.

How can I solve this error?

Thanks

El Lun 29 Abr 2002 14:03, escribió:
> OK, so java on mac needs a .jnilib.  Did you try renaming the vtk*Java
> libs to have extension .jnilib?  Or better yet, something like below,
> linking libvtkCommon.dylib and libvtkCommonJava.dylib to
> libvtkCommonJava.jnilib?
> -Jeff
>
> <excerpt>
> JNI libraries are always named |lib|/|name|/| .jnilib|, where /|name|/
> is the value of the string used in the call to |System.loadLibrary()|.
> For example, to load the library named |libhello.jnilib|, you would make
>
> the following call in your Java code:
>     |System.loadLibrary("hello");|
>
> To build a JNI library, execute the following command:
>
>     *|$|*| cc -bundle
>     -I/System/Library/Frameworks/JavaVM.framework/Headers -o
>     lib|/|name|/|.jnilib -framework JavaVM |/|sourceFiles|/
>
> For example, if the files |hello.c| and |goodbye.c| contain the
> implementations of the native methods to be built into |
> libhello.jnilib|, you would build |libhello.jnilib| with the following
> command:
>
>     *|$|*| cc -bundle
>     -I/System/Library/Frameworks/JavaVM.framework/Headers -o
>     libhello.jnilib -framework JavaVM hello.c goodbye.c|
>
> A common problem for JNI developers is that JNI dynamic libraries have
> interdependencies. For example: libA.jnilib contains a function foo().
> libB.jnilib needs to link against libA.jnilib to make use of foo(). This
> will not work on Mac OS X because JNI libraries are bundles (all symbols
> are private to a bundle). One solution to this dependency problem is to
> put the common functions into a separate dynamic library (libC.dylib in
> this example) and link both libA.jnilib and libB.jnilib to libC.dylib.
>
> Daniel Sáez Domingo wrote:
> >Hi Jeff,
> >
> >   I have tested my system and I know that the java.library.path contains
> > the path to the directory where the .dylib are. But the problem is that
> > MacOSX doesn't understand .dylib but it only understands .jnilib when we
> > do a System.loadLibrary() call. Then I want to know how to convert .dylib
> > into .jnilib.
> >
> >Thanks
> >Daniel Sáez
> >
> >El Lun 29 Abr 2002 13:38, escribió:
> >>Hi Daniel,
> >>What are the contents of DYLD_LIBRARY_PATH?  Also, (I'm not familiar
> >>with macos) does setting LD_LIBRARY_PATH to /usr/local/src/VTK/bin (or
> >>equivalent location of your shared libraries) help?
> >>-Jeff
> >>
> >>Daniel Sáez Domingo wrote:
> >>>The error is:
> >>>
> >>>Exception in thread "main" java.lang.UnsatisfiedLinkError: no
> >>>vtkCommonJava in java.library.path
> >>>       at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1312)
> >>>       at java.lang.Runtime.loadLibrary0(Runtime.java:749)
> >>>       at java.lang.System.loadLibrary(System.java:820)
> >>>       at vtkPanel.<clinit>(vtkPanel.java:22)
> >>>
> >>>and my DYLD_LIBRARY_PATH is:
> >>>
> >>>DYLD_LIBRARY_PATH=/usr/local/src/VTK/lib:/usr/local/src/VTK/bin
> >>>
> >>>Daniel Sáez
> >>>
> >>>El Lun 29 Abr 2002 13:24, escribió:
> >>>>No, what is the error exactly - what is the stack trace?  Also, what is
> >>>>your DYLD_LIBRARY_PATH?
> >>>>-Jeff
> >>>>
> >>>>Daniel Sáez Domingo wrote:
> >>>>>UnsatisfiedLinkError is produced when the library that we are trying
> >>>>> to load doesn't exist in java.library.path property. But I think that
> >>>>> this error is produced because I have .dylib libraries instead
> >>>>> .jnilib that are necessary for System.loadLibrary() java call.
> >>>>>
> >>>>>Daniel Sáez
> >>>>>
> >>>>>El Lun 29 Abr 2002 13:15, escribió:
> >>>>>>What is the unsatisfied link error?
> >>>>>>-Jeff
> >>>>>>
> >>>>>>Daniel Sáez Domingo wrote:
> >>>>>>>Hello,
> >>>>>>>
> >>>>>>>I have a problem loading libraries in Java. I'll explain it.
> >>>>>>>
> >>>>>>>I have ported VTK into Mac OSX using only Quartz and wrapping Java.
> >>>>>>> It generates libraries named libnameJava.dylib from a great number
> >>>>>>> of files. I have included the DYLD_LIBRARY_PATH with the path to
> >>>>>>> these libraries. Then, when a System.loadLibrary("nameJava") call
> >>>>>>> is done, it's produced an UnsatisfiedLinkError.
> >>>>>>>I have read that the System.loadLibrary() call needs a .jnilib
> >>>>>>>library, but I don't know how to create it from a dylib library
> >>>>>>> (this option would be the best) or from the source files. I don't
> >>>>>>> either know if I have to create both jnilib and dylib libraries
> >>>>>>> because I don't know if the dylib library is going to be used.
> >>>>>>>
> >>>>>>>I would thank somebody help me.
> >>>>>>>
> >>>>>>>Daniel Sáez
> >>>>>>>_______________________________________________
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