[torqueusers] Libtorque on Mac OS X

Mariusz Mamoński mamonski at man.poznan.pl
Mon Jul 12 03:55:40 MDT 2010


On 12 July 2010 10:52, Scott Wilson <scott at epistemy.com> wrote:
> Hello all,
> I've finally figured out enough JNI to get Dan Templeton's Sun Grid Engine
> Java DRMAA bindings ported to TORQUE (a task made much easier by their
> well-written nature), but I'm running into a problem when running them on
> our OS X test system:
>
> Exception in thread "main" java.lang.reflect.InvocationTargetException
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
> org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(JarRsrcLoader.java:56)
> Caused by: java.lang.UnsatisfiedLinkError:
> /Users/scott/Documents/jdrmaa/src/libdrmaa.jnilib:  Symbol not found:
> _environ   Referenced from: /usr/local/lib/libtorque.2.dylib   Expected in:
> flat namespace  in /usr/local/lib/libtorque.2.dylib
> at java.lang.ClassLoader$NativeLibrary.load(Native Method)
> at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1823)
> at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1738)
> at java.lang.Runtime.loadLibrary0(Runtime.java:823)
> at java.lang.System.loadLibrary(System.java:1045)
> at com.Epistemy.drmaa.SessionImpl$1.run(SessionImpl.java:64)
> at java.security.AccessController.doPrivileged(Native Method)
> at com.Epistemy.drmaa.SessionImpl.<clinit>(SessionImpl.java:62)
> at
> com.Epistemy.drmaa.SessionFactoryImpl.getSession(SessionFactoryImpl.java:60)
> at com.Epistemy.DRMAA.test.DRMAATest.main(DRMAATest.java:15)
> ... 5 more
>
> The test machine is an Intel Xeon XServe running Mac OS X Server version
> 10.6.4 and TORQUE 2.4.8.
> The problem seems to be that the _environ symbol, which is known to be
> declared but not defined on OS X
> (e.g. http://lists.apple.com/archives/Darwin-development/2003/Apr/msg00177.html
> and follow ups). There is a simple workaround - add #define environ
> (*_NSGetEnviron()) - to the library, which I've tried doing in my code to no
> avail. I'm not experienced enough with C to be certain that this is any of
> the TORQUE code, but it seems to be libtorque that's being expected to
> provide _environ (although it isn't explicitly referenced from the C code I
> compiled into libdrmaa.jnilib).
> Does anyone have experience of using libtorque, either directly or through
> the C DRMAA bindings, on Mac OS X 10.5 or 10.6? Does anyone know what files
I have Mac OS X but  quite old Tiger release (10.4) and i do not
observe such problems. Which DRMAA C bindings are you using: the
newest one?
> I would need to edit in the source to add the workaround?
> Thanks,
> Scott
>
> Scott Wilson
> Developer
> Epistemy
> Energy Academy
> Riccarton
> EH14 4AS
>
> tel: +44 131 564 0232
> Scott.Wilson at epistemy.com
> http://www.epistemy.com/
> Epistemy Limited is a company registered in Scotland, number SC365481.
> Registered office: Epistemy Limited c/o Technology and Research Services,
> Heriot-Watt University, Riccarton, Edinburgh, EH14 4AS
>
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>


BR,
-- 
Mariusz


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