Alternatives to setting java.library.path?

Question

I have a Java program making some JNI calls to a native library ("mylib.so"). Whenever I want to run this program, from the command line, I must set java.library.path to the location of my library as such:

java -Djava.library.path=/var/natives/ -classpath MyPackage.jar MyPackage.MyClass arg1 arg2

I'm wondering if there are any alternatives so I do not have to set it with the -D option everytime I run my program.

I have tried adding /var/natives/ to my $PATH variable, but it still complains that it cannot find the library if I do not explicitly set it with -D.

Do I have any other options?

@BalusC, if you want to post that as an answer I'll accept it. — Petey B
– Petey B, Commented May 27, 2011 at 15:01

BalusC · Accepted Answer · 2011-05-27 15:05:00Z

2

Just put the entire command in a .sh file to save yourself from repeating it everytime.

answered May 27, 2011 at 15:05

BalusC

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Kevin K · Accepted Answer · 2011-05-26 20:38:06Z

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Instead of using System.loadLibrary("mylib"), use System.load("/var/natives/mylib.so").

Or, you could define a custom class loader for the class and override the ClassLoader.findLibrary(String) method.

answered May 26, 2011 at 20:38

Kevin K

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QuantumMechanic · Accepted Answer · 2011-05-26 20:05:30Z

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One place you can put it (which admittedly may be suboptimal) is in the [JRE]/lib/i386 directory (or [JRE]/lib/x64 or whatever it is called in a 64-bit Java installation).

Also, have you tried putting /var/natives in LD_LIBRARY_PATH?

answered May 26, 2011 at 20:05

QuantumMechanic

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Petey B · Accepted Answer · 2011-05-27 17:39:55Z

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Another possibility is creating your own variable with the switches in it. For example:

COMPILE="-Djava.library.path=/var/natives/ -classpath /var/packages/MyPackage.jar"

Then run the command like:

java $COMPILE MyPackage.MyClass arg1 arg2 arg3

answered May 27, 2011 at 17:39

Petey B

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