[kaffe] System.loadLibrary() should look in /lib and /usr/lib

Dalibor Topic robilad at yahoo.com
Sun Jul 27 04:16:02 PDT 2003

Hi Mark,

sorry for me taking so long to reply, I'm now going though my mailbiox folder
with patches and suggestion, and noticed I hadn't replied.

--- Mark Wielaard <mark at klomp.org> wrote:
> Hi,
> When doing a System.loadLibrary() kaffe doesn't look into the standard
> /lib and /usr/lib directories for the library. But gives:
> java.lang.UnsatisfiedLinkError: libGTKJava: not found
> Adding its directory to LD_LIBRARY_PATH may help.
> And indeed adding /usr/lib (where the library is installed) to
> LD_LIBRARY_PATH seems to work, but it would be more convenient if kaffe
> would automatically load standard libraries (from /lib and /usr/lib).

I wrote a test case:

public class LibLoad {
        public static void main(String [] args) {
                String lpath = System.getProperty("java.library.path");

here's the output from JDK 1.4.2:

topic at clerks:~> /opt/j2sdk_nb/j2sdk1.4.2/bin/java LibLoad gtk
Exception in thread "main" java.lang.UnsatisfiedLinkError: no gtk in
        at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1491)
        at java.lang.Runtime.loadLibrary0(Runtime.java:788)
        at java.lang.System.loadLibrary(System.java:834)
        at LibLoad.main(LibLoad.java:5)

but adding the standard library paths to LD_LIBRARY_PATH works:

LD_LIBRARY_PATH=/lib:/usr/lib:/usr/local/lib/ /opt/j2sdk_nb/j2sdk1.4.2/bin/java
LibLoad dvdcss

that's the way it works in kaffe, too.

Given that standard library paths are system dependant (i.e. there is no /lib
on Win32 ;), I think we should keep doing as JDK does, and use LD_LIBRARY_PATH.
Unfortunately, the Java Class Library books only specify the search order on

dalibor topic

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