[torquedev] Libtorque on Mac OS X

Joshua Bernstein jbernstein at penguincomputing.com
Thu Jul 15 17:33:28 MDT 2010

Hi Scott,

Sadly I haven't unpacked my new MBP yet, so I'm only able to build 
TORQUE on OS X 10.5 where this doesn't seem to be a problem.

You should be able to just add a #define as you suggest inside of the 
libtorque C file, so the symbol is actually defined in there.


Scott Wilson wrote:
> Hello all,
> I've porting 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).
> I've tried asking on TorqueUsers, but the only people with experience 
> running TORQUE on Macs seem to be on 10.4 or earlier (where the problem 
> doesn't manifest itself). Does anyone know what files I would need to 
> edit in the source to add the workaround? I've had a look, but I only 
> know enough to be dangerous when it comes to C. For that matter, should 
> the workaround not be placed in the source when the configure script 
> detects that the build is on a Mac?
> Thanks,
> Scott
> *Scott Wilson*
> Developer
> *Epistemy*
> Energy Academy
> Riccarton
> EH14 4AS
> *tel: *+44 131 564 0232
> Scott.Wilson at epistemy.com <mailto://scott.wilson@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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