Jan Goyvaerts Jan Goyvaerts - 16 days ago 7
Java Question

How to run a 32bit JVM on a 64bit Linux?

I'm trying to run a 32bit Hotspot JVM on a 64bit Debian Mint machine. At first sight it all works until you'll try to run something using Swing:

java.lang.UnsatisfiedLinkError: /opt/javadev/jdk1.7.0_03_32b/jre/lib/i386/xawt/libmawt.so:
libXext.so.6: cannot open shared object file: No such file or directory


Adding that to the library path:
export LD_LIBRARY_PATH=/usr/lib/x86_64-linux-gnu
.

But then it gives this error:

java.lang.UnsatisfiedLinkError: /opt/javadev/jdk1.7.0_03_32b/jre/lib/i386/xawt/libmawt.so:
libXext.so.6: wrong ELF class: ELFCLASS64


Any idea what else has to be done here ?

Answer

To be able to use the 32-bit JVM, you'll need to have the 32-bit compatibility libraries installed. The second error message means that the 32-bit JVM process is trying to load a 64-bit library; that doesn't work.

On Ubuntu you'd have to install the package ia32-libs, which contains the 32-bit compatibility libraries for 64-bit Ubuntu.

UPDATE: Ubuntu 13.10 introduced multi-arch which replaced ia32-libs with libstdc++6:i386 libgcc1:i386 zlib1g:i386 libncurses5:i386. Source: http://stackoverflow.com/a/10473415/14731

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