: multimodule परियोजना

Question

में "UnsatisfiedLinkError मूल निवासी लाइब्रेरी पहले से ही एक और classloader में लोड" मैं एक परियोजना है जो JOCL पुस्तकालय (http://www.jocl.org/) का उपयोग करता है और कई मॉड्यूल है है। जब मैं कमांड लाइन से "./activator परीक्षण" चलाते हैं, या चलाने एसबीटी कंसोल में "test" कमांड मैं की तरह त्रुटियों हो रही है निम्नलिखित:

[info] Exception encountered when attempting to run a suite with class name: pl.tarsa.sortalgobox.opencl.CpuMergeSortSpec *** ABORTED *** 
[info] java.lang.UnsatisfiedLinkError: Error while loading native library "JOCL_0_1_9-linux-x86_64" with base name "JOCL_0_1_9" 
[info] Operating system name: Linux 
[info] Architecture   : amd64 
[info] Architecture bit size: 64 
[info] ---(start of nested stack traces)--- 
[info] Stack trace from the attempt to load the library as a file: 
[info] java.lang.UnsatisfiedLinkError: no JOCL_0_1_9-linux-x86_64 in java.library.path 
[info] at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1865) 
[info] at java.lang.Runtime.loadLibrary0(Runtime.java:870) 
[info] at java.lang.System.loadLibrary(System.java:1122) 
[info] at org.jocl.LibUtils.loadLibrary(LibUtils.java:80) 
[info] at org.jocl.CL.<clinit>(CL.java:47) 
[info] at pl.tarsa.sortalgobox.opencl.common.CLContextDescription$.enumerate(CLContextDescription.scala:44) 
[info] at pl.tarsa.sortalgobox.opencl.common.CLContextsManager$.contextsDescriptions$lzycompute(CLContextsManager.scala:6) 
[info] at pl.tarsa.sortalgobox.opencl.common.CLContextsManager$.contextsDescriptions(CLContextsManager.scala:6) 
[info] at pl.tarsa.sortalgobox.opencl.common.CLContextsManager$.createCpuContext(CLContextsManager.scala:9) 
[info] at pl.tarsa.sortalgobox.opencl.common.CLContextsCache$.cpuContext$lzycompute(CLContextsCache.scala:24) 
[info] at pl.tarsa.sortalgobox.opencl.common.CLContextsCache$.cpuContext(CLContextsCache.scala:24) 
[info] at pl.tarsa.sortalgobox.opencl.common.CLContextsCache$.withCpuContext(CLContextsCache.scala:28) 
[info] at pl.tarsa.sortalgobox.opencl.common.CpuSort.sort(CpuSort.scala:34) 
[info] at pl.tarsa.sortalgobox.opencl.common.CpuSort.sort(CpuSort.scala:32) 
[info] at pl.tarsa.sortalgobox.sorts.SortChecker.forEmptyArray(SortChecker.scala:31) 
[info] at pl.tarsa.sortalgobox.opencl.CpuMergeSortSpec$$anonfun$1$$anonfun$apply$mcV$sp$1.apply$mcV$sp(CpuMergeSortSpec.scala:32) 
[info] at pl.tarsa.sortalgobox.tests.CommonUnitSpecBase.guardedOpenCLTest(CommonUnitSpecBase.scala:40) 
[info] at pl.tarsa.sortalgobox.opencl.CpuMergeSortSpec$$anonfun$1.apply$mcV$sp(CpuMergeSortSpec.scala:31) 
[info] at pl.tarsa.sortalgobox.opencl.CpuMergeSortSpec$$anonfun$1.apply(CpuMergeSortSpec.scala:31) 
[info] at pl.tarsa.sortalgobox.opencl.CpuMergeSortSpec$$anonfun$1.apply(CpuMergeSortSpec.scala:31) 
[info] at org.scalatest.Transformer$$anonfun$apply$1.apply$mcV$sp(Transformer.scala:22) 
[info] at org.scalatest.OutcomeOf$class.outcomeOf(OutcomeOf.scala:85) 
[info] at org.scalatest.OutcomeOf$.outcomeOf(OutcomeOf.scala:104) 
[info] at org.scalatest.Transformer.apply(Transformer.scala:22) 
[info] at org.scalatest.Transformer.apply(Transformer.scala:20) 
[info] at org.scalatest.FlatSpecLike$$anon$1.apply(FlatSpecLike.scala:1647) 
[info] at org.scalamock.scalatest.AbstractMockFactory$$anonfun$withFixture$1.apply(AbstractMockFactory.scala:35) 
[info] at org.scalamock.scalatest.AbstractMockFactory$$anonfun$withFixture$1.apply(AbstractMockFactory.scala:34) 
[info] at org.scalamock.MockFactoryBase$class.withExpectations(MockFactoryBase.scala:41) 
[info] at pl.tarsa.sortalgobox.tests.CommonUnitSpecBase.withExpectations(CommonUnitSpecBase.scala:28) 
[info] at org.scalamock.scalatest.AbstractMockFactory$class.withFixture(AbstractMockFactory.scala:34) 
[info] at pl.tarsa.sortalgobox.tests.CommonUnitSpecBase.withFixture(CommonUnitSpecBase.scala:28) 
[info] at org.scalatest.FlatSpecLike$class.invokeWithFixture$1(FlatSpecLike.scala:1644) 
[info] at org.scalatest.FlatSpecLike$$anonfun$runTest$1.apply(FlatSpecLike.scala:1656) 
[info] at org.scalatest.FlatSpecLike$$anonfun$runTest$1.apply(FlatSpecLike.scala:1656) 
[info] at org.scalatest.SuperEngine.runTestImpl(Engine.scala:306) 
[info] at org.scalatest.FlatSpecLike$class.runTest(FlatSpecLike.scala:1656) 
[info] at org.scalatest.FlatSpec.runTest(FlatSpec.scala:1683) 
[info] at org.scalatest.FlatSpecLike$$anonfun$runTests$1.apply(FlatSpecLike.scala:1714) 
[info] at org.scalatest.FlatSpecLike$$anonfun$runTests$1.apply(FlatSpecLike.scala:1714) 
[info] at org.scalatest.SuperEngine$$anonfun$traverseSubNodes$1$1.apply(Engine.scala:413) 
[info] at org.scalatest.SuperEngine$$anonfun$traverseSubNodes$1$1.apply(Engine.scala:401) 
[info] at scala.collection.immutable.List.foreach(List.scala:381) 
[info] at org.scalatest.SuperEngine.traverseSubNodes$1(Engine.scala:401) 
[info] at org.scalatest.SuperEngine.org$scalatest$SuperEngine$$runTestsInBranch(Engine.scala:390) 
[info] at org.scalatest.SuperEngine$$anonfun$traverseSubNodes$1$1.apply(Engine.scala:427) 
[info] at org.scalatest.SuperEngine$$anonfun$traverseSubNodes$1$1.apply(Engine.scala:401) 
[info] at scala.collection.immutable.List.foreach(List.scala:381) 
[info] at org.scalatest.SuperEngine.traverseSubNodes$1(Engine.scala:401) 
[info] at org.scalatest.SuperEngine.org$scalatest$SuperEngine$$runTestsInBranch(Engine.scala:396) 
[info] at org.scalatest.SuperEngine.runTestsImpl(Engine.scala:483) 
[info] at org.scalatest.FlatSpecLike$class.runTests(FlatSpecLike.scala:1714) 
[info] at org.scalatest.FlatSpec.runTests(FlatSpec.scala:1683) 
[info] at org.scalatest.Suite$class.run(Suite.scala:1424) 
[info] at org.scalatest.FlatSpec.org$scalatest$FlatSpecLike$$super$run(FlatSpec.scala:1683) 
[info] at org.scalatest.FlatSpecLike$$anonfun$run$1.apply(FlatSpecLike.scala:1760) 
[info] at org.scalatest.FlatSpecLike$$anonfun$run$1.apply(FlatSpecLike.scala:1760) 
[info] at org.scalatest.SuperEngine.runImpl(Engine.scala:545) 
[info] at org.scalatest.FlatSpecLike$class.run(FlatSpecLike.scala:1760) 
[info] at org.scalatest.FlatSpec.run(FlatSpec.scala:1683) 
[info] at org.scalatest.tools.Framework.org$scalatest$tools$Framework$$runSuite(Framework.scala:462) 
[info] at org.scalatest.tools.Framework$ScalaTestTask.execute(Framework.scala:671) 
[info] at sbt.TestRunner.runTest$1(TestFramework.scala:76) 
[info] at sbt.TestRunner.run(TestFramework.scala:85) 
[info] at sbt.TestFramework$$anon$2$$anonfun$$init$$1$$anonfun$apply$8.apply(TestFramework.scala:202) 
[info] at sbt.TestFramework$$anon$2$$anonfun$$init$$1$$anonfun$apply$8.apply(TestFramework.scala:202) 
[info] at sbt.TestFramework$.sbt$TestFramework$$withContextLoader(TestFramework.scala:185) 
[info] at sbt.TestFramework$$anon$2$$anonfun$$init$$1.apply(TestFramework.scala:202) 
[info] at sbt.TestFramework$$anon$2$$anonfun$$init$$1.apply(TestFramework.scala:202) 
[info] at sbt.TestFunction.apply(TestFramework.scala:207) 
[info] at sbt.Tests$$anonfun$9.apply(Tests.scala:216) 
[info] at sbt.Tests$$anonfun$9.apply(Tests.scala:216) 
[info] at sbt.std.Transform$$anon$3$$anonfun$apply$2.apply(System.scala:44) 
[info] at sbt.std.Transform$$anon$3$$anonfun$apply$2.apply(System.scala:44) 
[info] at sbt.std.Transform$$anon$4.work(System.scala:63) 
[info] at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:226) 
[info] at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:226) 
[info] at sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:17) 
[info] at sbt.Execute.work(Execute.scala:235) 
[info] at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:226) 
[info] at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:226) 
[info] at sbt.ConcurrentRestrictions$$anon$4$$anonfun$1.apply(ConcurrentRestrictions.scala:159) 
[info] at sbt.CompletionService$$anon$2.call(CompletionService.scala:28) 
[info] at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
[info] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
[info] at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
[info] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
[info] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
[info] at java.lang.Thread.run(Thread.java:745) 
[info] Stack trace from the attempt to load the library as a resource: 
[info] java.lang.UnsatisfiedLinkError: Native Library /tmp/libJOCL_0_1_9-linux-x86_64.so already loaded in another classloader 
[info] at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1903) 
[info] at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1822) 
[info] at java.lang.Runtime.load0(Runtime.java:809) 
[info] at java.lang.System.load(System.java:1086) 
[info] at org.jocl.LibUtils.loadLibraryResource(LibUtils.java:188) 
[info] at org.jocl.LibUtils.loadLibrary(LibUtils.java:91) 
[info] at org.jocl.CL.<clinit>(CL.java:47) 
[info] at pl.tarsa.sortalgobox.opencl.common.CLContextDescription$.enumerate(CLContextDescription.scala:44) 
[info] at pl.tarsa.sortalgobox.opencl.common.CLContextsManager$.contextsDescriptions$lzycompute(CLContextsManager.scala:6) 
[info] at pl.tarsa.sortalgobox.opencl.common.CLContextsManager$.contextsDescriptions(CLContextsManager.scala:6) 
[info] at pl.tarsa.sortalgobox.opencl.common.CLContextsManager$.createCpuContext(CLContextsManager.scala:9) 
[info] at pl.tarsa.sortalgobox.opencl.common.CLContextsCache$.cpuContext$lzycompute(CLContextsCache.scala:24) 
[info] at pl.tarsa.sortalgobox.opencl.common.CLContextsCache$.cpuContext(CLContextsCache.scala:24) 
[info] at pl.tarsa.sortalgobox.opencl.common.CLContextsCache$.withCpuContext(CLContextsCache.scala:28) 
[info] at pl.tarsa.sortalgobox.opencl.common.CpuSort.sort(CpuSort.scala:34) 
[info] at pl.tarsa.sortalgobox.opencl.common.CpuSort.sort(CpuSort.scala:32) 
[info] at pl.tarsa.sortalgobox.sorts.SortChecker.forEmptyArray(SortChecker.scala:31) 
[info] at pl.tarsa.sortalgobox.opencl.CpuMergeSortSpec$$anonfun$1$$anonfun$apply$mcV$sp$1.apply$mcV$sp(CpuMergeSortSpec.scala:32) 
[info] at pl.tarsa.sortalgobox.tests.CommonUnitSpecBase.guardedOpenCLTest(CommonUnitSpecBase.scala:40) 
[info] at pl.tarsa.sortalgobox.opencl.CpuMergeSortSpec$$anonfun$1.apply$mcV$sp(CpuMergeSortSpec.scala:31) 
[info] at pl.tarsa.sortalgobox.opencl.CpuMergeSortSpec$$anonfun$1.apply(CpuMergeSortSpec.scala:31) 
[info] at pl.tarsa.sortalgobox.opencl.CpuMergeSortSpec$$anonfun$1.apply(CpuMergeSortSpec.scala:31) 
[info] at org.scalatest.Transformer$$anonfun$apply$1.apply$mcV$sp(Transformer.scala:22) 
[info] at org.scalatest.OutcomeOf$class.outcomeOf(OutcomeOf.scala:85) 
[info] at org.scalatest.OutcomeOf$.outcomeOf(OutcomeOf.scala:104) 
[info] at org.scalatest.Transformer.apply(Transformer.scala:22) 
[info] at org.scalatest.Transformer.apply(Transformer.scala:20) 
[info] at org.scalatest.FlatSpecLike$$anon$1.apply(FlatSpecLike.scala:1647) 
[info] at org.scalamock.scalatest.AbstractMockFactory$$anonfun$withFixture$1.apply(AbstractMockFactory.scala:35) 
[info] at org.scalamock.scalatest.AbstractMockFactory$$anonfun$withFixture$1.apply(AbstractMockFactory.scala:34) 
[info] at org.scalamock.MockFactoryBase$class.withExpectations(MockFactoryBase.scala:41) 
[info] at pl.tarsa.sortalgobox.tests.CommonUnitSpecBase.withExpectations(CommonUnitSpecBase.scala:28) 
[info] at org.scalamock.scalatest.AbstractMockFactory$class.withFixture(AbstractMockFactory.scala:34) 
[info] at pl.tarsa.sortalgobox.tests.CommonUnitSpecBase.withFixture(CommonUnitSpecBase.scala:28) 
[info] at org.scalatest.FlatSpecLike$class.invokeWithFixture$1(FlatSpecLike.scala:1644) 
[info] at org.scalatest.FlatSpecLike$$anonfun$runTest$1.apply(FlatSpecLike.scala:1656) 
[info] at org.scalatest.FlatSpecLike$$anonfun$runTest$1.apply(FlatSpecLike.scala:1656) 
[info] at org.scalatest.SuperEngine.runTestImpl(Engine.scala:306) 
[info] at org.scalatest.FlatSpecLike$class.runTest(FlatSpecLike.scala:1656) 
[info] at org.scalatest.FlatSpec.runTest(FlatSpec.scala:1683) 
[info] at org.scalatest.FlatSpecLike$$anonfun$runTests$1.apply(FlatSpecLike.scala:1714) 
[info] at org.scalatest.FlatSpecLike$$anonfun$runTests$1.apply(FlatSpecLike.scala:1714) 
[info] at org.scalatest.SuperEngine$$anonfun$traverseSubNodes$1$1.apply(Engine.scala:413) 
[info] at org.scalatest.SuperEngine$$anonfun$traverseSubNodes$1$1.apply(Engine.scala:401) 
[info] at scala.collection.immutable.List.foreach(List.scala:381) 
[info] at org.scalatest.SuperEngine.traverseSubNodes$1(Engine.scala:401) 
[info] at org.scalatest.SuperEngine.org$scalatest$SuperEngine$$runTestsInBranch(Engine.scala:390) 
[info] at org.scalatest.SuperEngine$$anonfun$traverseSubNodes$1$1.apply(Engine.scala:427) 
[info] at org.scalatest.SuperEngine$$anonfun$traverseSubNodes$1$1.apply(Engine.scala:401) 
[info] at scala.collection.immutable.List.foreach(List.scala:381) 
[info] at org.scalatest.SuperEngine.traverseSubNodes$1(Engine.scala:401) 
[info] at org.scalatest.SuperEngine.org$scalatest$SuperEngine$$runTestsInBranch(Engine.scala:396) 
[info] at org.scalatest.SuperEngine.runTestsImpl(Engine.scala:483) 
[info] at org.scalatest.FlatSpecLike$class.runTests(FlatSpecLike.scala:1714) 
[info] at org.scalatest.FlatSpec.runTests(FlatSpec.scala:1683) 
[info] at org.scalatest.Suite$class.run(Suite.scala:1424) 
[info] at org.scalatest.FlatSpec.org$scalatest$FlatSpecLike$$super$run(FlatSpec.scala:1683) 
[info] at org.scalatest.FlatSpecLike$$anonfun$run$1.apply(FlatSpecLike.scala:1760) 
[info] at org.scalatest.FlatSpecLike$$anonfun$run$1.apply(FlatSpecLike.scala:1760) 
[info] at org.scalatest.SuperEngine.runImpl(Engine.scala:545) 
[info] at org.scalatest.FlatSpecLike$class.run(FlatSpecLike.scala:1760) 
[info] at org.scalatest.FlatSpec.run(FlatSpec.scala:1683) 
[info] at org.scalatest.tools.Framework.org$scalatest$tools$Framework$$runSuite(Framework.scala:462) 
[info] at org.scalatest.tools.Framework$ScalaTestTask.execute(Framework.scala:671) 
[info] at sbt.TestRunner.runTest$1(TestFramework.scala:76) 
[info] at sbt.TestRunner.run(TestFramework.scala:85) 
[info] at sbt.TestFramework$$anon$2$$anonfun$$init$$1$$anonfun$apply$8.apply(TestFramework.scala:202) 
[info] at sbt.TestFramework$$anon$2$$anonfun$$init$$1$$anonfun$apply$8.apply(TestFramework.scala:202) 
[info] at sbt.TestFramework$.sbt$TestFramework$$withContextLoader(TestFramework.scala:185) 
[info] at sbt.TestFramework$$anon$2$$anonfun$$init$$1.apply(TestFramework.scala:202) 
[info] at sbt.TestFramework$$anon$2$$anonfun$$init$$1.apply(TestFramework.scala:202) 
[info] at sbt.TestFunction.apply(TestFramework.scala:207) 
[info] at sbt.Tests$$anonfun$9.apply(Tests.scala:216) 
[info] at sbt.Tests$$anonfun$9.apply(Tests.scala:216) 
[info] at sbt.std.Transform$$anon$3$$anonfun$apply$2.apply(System.scala:44) 
[info] at sbt.std.Transform$$anon$3$$anonfun$apply$2.apply(System.scala:44) 
[info] at sbt.std.Transform$$anon$4.work(System.scala:63) 
[info] at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:226) 
[info] at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:226) 
[info] at sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:17) 
[info] at sbt.Execute.work(Execute.scala:235) 
[info] at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:226) 
[info] at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:226) 
[info] at sbt.ConcurrentRestrictions$$anon$4$$anonfun$1.apply(ConcurrentRestrictions.scala:159) 
[info] at sbt.CompletionService$$anon$2.call(CompletionService.scala:28) 
[info] at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
[info] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
[info] at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
[info] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
[info] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
[info] at java.lang.Thread.run(Thread.java:745) 
[info] ---(end of nested stack traces)--- 
[info] at org.jocl.LibUtils.loadLibrary(LibUtils.java:122) 
[info] at org.jocl.CL.<clinit>(CL.java:47) 
[info] at pl.tarsa.sortalgobox.opencl.common.CLContextDescription$.enumerate(CLContextDescription.scala:44) 
[info] at pl.tarsa.sortalgobox.opencl.common.CLContextsManager$.contextsDescriptions$lzycompute(CLContextsManager.scala:6) 
[info] at pl.tarsa.sortalgobox.opencl.common.CLContextsManager$.contextsDescriptions(CLContextsManager.scala:6) 
[info] at pl.tarsa.sortalgobox.opencl.common.CLContextsManager$.createCpuContext(CLContextsManager.scala:9) 
[info] at pl.tarsa.sortalgobox.opencl.common.CLContextsCache$.cpuContext$lzycompute(CLContextsCache.scala:24) 
[info] at pl.tarsa.sortalgobox.opencl.common.CLContextsCache$.cpuContext(CLContextsCache.scala:24) 
[info] at pl.tarsa.sortalgobox.opencl.common.CLContextsCache$.withCpuContext(CLContextsCache.scala:28) 
[info] at pl.tarsa.sortalgobox.opencl.common.CpuSort.sort(CpuSort.scala:34) 

उन त्रुटियों पहले मॉड्यूल में परीक्षण के लिए प्रदर्शित नहीं/जेओसीएल के आधार पर उपप्रोजेक्ट। जब मैं "./activator परीक्षण" कुछ (पहले परीक्षण किया) मॉड्यूल काम से तो OpenCL परीक्षण और अन्य सभी कर यानी नहीं है। जब मैं एसबीटी कंसोल को बढ़ाने के लिए "./activator" करता हूं और फिर कई बार "परीक्षण" चलाता हूं तो पहली बार यह सामान्य "./activator परीक्षण" जैसा व्यवहार करता है लेकिन अगले परीक्षण के लिए सभी ओपनसीएल परीक्षण असंतुष्ट लिंक्स त्रुटि के साथ विफल हो जाते हैं।

यहाँ अपने निर्माण फ़ाइल है: https://github.com/tarsa/SortAlgoBox/blob/4a041d93beb572a6dcce100780bc675d46d814f3/project/MainBuild.scala

इस जवाब के अनुसार: https://stackoverflow.com/a/23157190/492749 एसबीटी कुछ जादू classloaders का उपयोग करता है और ऐसे प्रत्येक classloader के लिए देशी पुस्तकालयों नाम बदलता है। समस्या यह है कि जेओसीएल कुछ जावा क्लास को लोड करने के दौरान मूल पुस्तकालयों को अनपैक करता है और परिणामस्वरूप फ़ाइल नाम और स्थान हमेशा समान होता है। दूसरे शब्दों में: एसबीटी का जादू JOCL जादू के साथ अच्छी तरह से नहीं चलता है।

क्या अपने समाधान हो सकता है?

पीएस: IntelliJ IDEA के भीतर से निष्पादित होने पर परीक्षण अच्छी तरह से काम करते हैं - शायद आईडीईए क्लासलोडर जादू का उपयोग नहीं करता है।

Answer 1

According to this answer: https://stackoverflow.com/a/23157190/492749 SBT uses some magic classloaders and renames native libraries for each such classloader. The problem is that JOCL unpacks the native libraries during loading of some Java class and the resulting filename and location is always the same. In other words: SBT's magic doesn't play well with JOCL magic.

यह मेरे लिए स्वचालित रूप से नहीं हुआ; मुझे लगता है कि यह केवल एसबीटी प्लगइन्स लोड करते समय उपयोग किया जाता है। मैं adapt the SBT classloader पड़ा:

// adapted from sbt.classpath.NativeCopyLoader 
package scalan.compilation.lms 

import java.io.File 
import java.net.{URLClassLoader, URL} 
import java.nio.file.Files 

/** 
* Loads native libraries from a temporary location in order to work around the jvm native library uniqueness restriction. 
* 
* The loader will provide native libraries listed in `explicitLibraries` and on `searchPaths` by copying them to `tempDirectory`. 
*/ 
class NativeCopyLoader(explicitLibraries: Seq[File], searchPaths: Seq[File], urls: Array[URL], parent: ClassLoader) extends URLClassLoader(urls, parent) { 
    private[this] val mapped = new collection.mutable.HashMap[String, String] 
    private[this] val tempDirectory = Files.createTempDirectory("native-library-copies").toFile 
    tempDirectory.deleteOnExit() 

    override protected def findLibrary(name: String): String = 
    synchronized { mapped.getOrElseUpdate(name, findLibrary0(name)) } 

    private[this] def findLibrary0(name: String): String = { 
    val mappedName = System.mapLibraryName(name) 
    val explicit = explicitLibraries.filter(_.getName == mappedName).toStream 
    val search = searchPaths.toStream flatMap relativeLibrary(mappedName) 
    (explicit ++ search).headOption.map(copy).orNull 
    } 
    private[this] def relativeLibrary(mappedName: String)(base: File): Seq[File] = { 
    val f = new File(base, mappedName) 
    if (f.isFile) f :: Nil else Nil 
    } 
    private[this] def copy(f: File): String = { 
    val target = new File(tempDirectory, f.getName) 
    Files.copy(f.toPath, target.toPath) 
    target.getAbsolutePath 
    } 
} 

और फिर सुनिश्चित करें कि जब वर्ग है जो देशी पुस्तकालयों लोड लोड हो रहा है यह प्रयोग किया जाता हैं। हालांकि, जेओसीएल जादू के साथ काम करने के लिए संशोधन की आवश्यकता हो सकती है।