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OBConversion in Open Babel version 2.4.1

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Jördis-Ann Schüler

OBConversion in Open Babel version 2.4.1

Hello,

I am currently facing a problem with OpenBabel 2.4.1 and hope that you can help me.

I want to use the Java Interface of OpenBabel, so i compiled it with -DJAVA_BINDINGS=ON.

I include the generated openbabel.jar into my Java Project. My example Java file contains something like that:

System.loadLibrary("openbabel_java");

OBConversion c = new OBConversion();

I get the following error message when creating a OBConversion object:

Exception in thread "main" java.lang.UnsatisfiedLinkError: org.openbabel.openbabel_javaJNI.new_OBConversion__SWIG_2()J

at org.openbabel.openbabel_javaJNI.new_OBConversion__SWIG_2(Native Method)

at org.openbabel.OBConversion.<init>(OBConversion.java:47)

Apparently, the shared object has been found but the symbol new_OBConversion__SWIG_2() is missing in the shared object?

Can you help me dealing with this problem, please?

I had no problem in Open Babel version 2.3.2.

Thanks,

Jördis-Ann Schüler

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Geoff Hutchison

Re: OBConversion in Open Babel version 2.4.1

> I want to use the Java Interface of OpenBabel, so i compiled it with -DJAVA_BINDINGS=ON.
> I include the generated openbabel.jar into my Java Project. My example Java file contains something like that:
...
> Apparently, the shared object has been found but the symbol new_OBConversion__SWIG_2() is missing in the shared object?

Out of curiosity, what version of SWIG are you using? I'm wondering if there's a mismatch here, since SWIG is now in v3.x.

-Geoff

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Jördis-Ann Schüler

Re: OBConversion in Open Babel version 2.4.1

Hi,

I use SWIG version 3.0.8

Thanks, Jördis

Steffen Neumann

Re: OBConversion in Open Babel version 2.4.1

In reply to this post by Geoff Hutchison

Hi,

On Fr, 2016-11-11 at 11:29 -0500, Geoffrey Hutchison wrote:
> >
...
> > Apparently, the shared object has been found but the symbol
> > new_OBConversion__SWIG_2() is missing in the shared object?
> Out of curiosity, what version of SWIG are you using? I'm wondering
> if there's a mismatch here, since SWIG is now in v3.x.

So 3.0.8 should be working, right ?

Yours,
Steffen

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Geoff Hutchison

Re: OBConversion in Open Babel version 2.4.1

> So 3.0.8 should be working, right ?

You'll need to make sure the entire bindings are re-built (e.g., with javac in this case). But yes, I suspect the problem is that there's an older version of the bindings present, using SWIG2.

-Geoff
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