[vlc-devel] JVLC - java.lang.UnsatisfiedLinkError: Unable to load library 'vlc-control' under Windows

[Geert Lorang]

Very small (but annoying) bugreport:

When using JVLC under Windows you always get this exception:
"Exception in thread "main" java.lang.UnsatisfiedLinkError: Unable to 
load library 'vlc-control': The specified module could not be found."
while it works fine under Linux. After some digging i found the cause of 
this behavior:

The DLL (under windows) is called "libvlc-control.dll" (under Linux it 
is "libvlc-control.so").
BUT the code (bindings/java/org/videolan/jvlc/internal/LibVlc.java) 
tries to load "vlc-control" instead of "libvlc-control".

The fact that it works under Linux and not under Windows is because of 
the appended prefixes in NativeLibrary.java (JNA)
Take a look at lines 89-108 at 
http://www.koders.com/java/fid29B53221DCA930D96D8DA5780B22125F53B331FB.aspx 
(looks like JNA's svn is password protected)

There are a couple of solutions to fix this bug:
* Rename  your dll under windows to "vlc-control.dll"
* Change the code in LibVlc.java  to load "libvlc-control" instead of 
"vlc-control" (preferred solution?)
* Let VLC produce "vlc-control.dll/so" at compilation time
* Ask JNA developers to add "lib" as a prefix for Windows in 
NativeLibrary.java :-)

Build information:

Linux: Ubuntu 7.10 - vlc-snapshot-20080410.tar.bz2
Windows: Windows XP Pro SP2 - cygwin - git checked out yesterday

Anyway, keep up the good work!
Geert Lorang