Description of problem:

Building of vtk on AArch64 fails with:

The system is out of resources.
Consult the following stack trace for details.
java.lang.OutOfMemoryError: Java heap space
	at com.sun.tools.javac.code.Scope$ImportScope.makeEntry(Scope.java:526)
	at com.sun.tools.javac.code.Scope.enter(Scope.java:220)
	at com.sun.tools.javac.code.Scope.enter(Scope.java:202)
	at com.sun.tools.javac.code.Scope$StarImportScope.importAll(Scope.java:549)
	at com.sun.tools.javac.comp.MemberEnter.importAll(MemberEnter.java:163)
	at com.sun.tools.javac.comp.MemberEnter.visitImport(MemberEnter.java:549)
	at com.sun.tools.javac.tree.JCTree$JCImport.accept(JCTree.java:571)
	at com.sun.tools.javac.comp.MemberEnter.memberEnter(MemberEnter.java:435)
	at com.sun.tools.javac.comp.MemberEnter.memberEnter(MemberEnter.java:447)
	at com.sun.tools.javac.comp.MemberEnter.visitTopLevel(MemberEnter.java:526)
	at com.sun.tools.javac.tree.JCTree$JCCompilationUnit.accept(JCTree.java:518)
	at com.sun.tools.javac.comp.MemberEnter.memberEnter(MemberEnter.java:435)
	at com.sun.tools.javac.comp.MemberEnter.complete(MemberEnter.java:1038)
	at com.sun.tools.javac.code.Symbol.complete(Symbol.java:560)
	at com.sun.tools.javac.code.Symbol$ClassSymbol.complete(Symbol.java:1024)
	at com.sun.tools.javac.comp.Enter.complete(Enter.java:497)
	at com.sun.tools.javac.comp.Enter.main(Enter.java:475)
	at com.sun.tools.javac.main.JavaCompiler.enterTrees(JavaCompiler.java:985)
	at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:860)
	at com.sun.tools.javac.main.Main.compile(Main.java:523)
	at com.sun.tools.javac.main.Main.compile(Main.java:381)
	at com.sun.tools.javac.main.Main.compile(Main.java:370)
	at com.sun.tools.javac.main.Main.compile(Main.java:361)
	at com.sun.tools.javac.Main.compile(Main.java:56)
	at com.sun.tools.javac.Main.main(Main.java:42)
Wrapping/Java/CMakeFiles/VTKJavaClasses.dir/build.make:1952: recipe for target 'java/javac_stamp.txt' failed
make[2]: Leaving directory '/builddir/build/BUILD/VTK-6.1.0/build'
CMakeFiles/Makefile2:22685: recipe for target 'Wrapping/Java/CMakeFiles/VTKJavaClasses.dir/all' failed
make[2]: *** [java/javac_stamp.txt] Error 3
make[1]: *** [Wrapping/Java/CMakeFiles/VTKJavaClasses.dir/all] Error 2
make: *** [all] Error 2
make[1]: Leaving directory '/builddir/build/BUILD/VTK-6.1.0/build'
Makefile:120: recipe for target 'all' failed
Version-Release number of selected component (if applicable):


How reproducible:

always

Steps to Reproduce:
1. build package on aarch64 (use "arm-koji build rawhide")
2. watch it fail
3.

Actual results:

package fails to build

Expected results:

package builds

Additional info:

Increasing Java heap size with "JAVA_TOOL_OPTIONS=-Xmx2048m make %{?_smp_mflags}" helps. 2048m size was randomly selected.