Re: Hint library name (was Re: Naming convention for Java gluelib

[Mathieu Malaterre <mathieu.malaterre@gmail.com>]

On Wed, Jun 10, 2009 at 9:18 AM, Matthew Johnson<mjj29@debian.org> wrote:
> On Wed Jun 10 09:14, Mathieu Malaterre wrote:
>> Can I add something like:
>>
>> ...
>>     System.loadLibrary("foojni");
>
> Ah, yes, that is, in fact, how it works; you have to do this in order to
> load a native library. It will then look for lib${name}.so in
> $LD_LIBRARY_PATH and the java.library.path Java system property.

[For reference]
This was documented in the SWIG Java page:

http://www.swig.org/Doc1.3/Java.html#imclass_pragmas

...
The jniclasscode pragma is quite useful for adding in a static block
for loading the shared library / dynamic link library and demonstrates
how pragmas work:

%pragma(java) jniclasscode=%{
  static {
    try {
        System.loadLibrary("example");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load. \n" + e);
      System.exit(1);
    }
  }
%}
...

Thus application programmer do not need to know the actual name I
choose for the jni layer :)


-- 
Mathieu