Bug#357781: cacao: linker error is pointing to the wrong library

[Petter Reinholdtsen]

Package: cacao
Version: 0.95-1
Severity: normal

I discovered this problem while trying to get worldwind2d running.  It
is related to bug #348504.  When running the program using cacao, I
got a UnsatisfiedLinkError claiming that the jogl library isn't found,
despite the fact that strace show that it opened libjogl.so
successfully:

  % LD_LIBRARY_PATH=.:/home/pere/src/openstreetmapsvn/ww2d-0.99.87 cacao -jar WW2D.jar
  WW2D 0.99.87 by Vitaliy Pronkin <pronvit at gmail.com> starting...
  Exception in thread "main" java.lang.UnsatisfiedLinkError: Native library `jogl' not found (as file `libjogl.so') in gnu.classpath.boot.library.path and java.library.path
     at java.lang.Runtime.loadLibrary (Runtime.java:763)
     at java.lang.System.loadLibrary (System.java:529)
     at net.java.games.jogl.impl.NativeLibLoader$1.run (NativeLibLoader.java:72)
     at java.security.AccessController.doPrivileged (AccessController.java:96)
     at net.java.games.jogl.impl.NativeLibLoader.load (NativeLibLoader.java:58)
     at net.java.games.jogl.impl.x11.X11GLContextFactory.<clinit> (X11GLContextFactory.java:50)
     at java.lang.VMClass.forName (Native Method)
     at java.lang.Class.forName (Class.java:161)
     at net.java.games.jogl.impl.GLContextFactory.getFactory (GLContextFactory.java:69)
     at net.java.games.jogl.GLDrawableFactory.createGLCanvas (GLDrawableFactory.java:150)
     at net.java.games.jogl.GLDrawableFactory.createGLCanvas (GLDrawableFactory.java:118)
     at net.java.games.jogl.GLDrawableFactory.createGLCanvas (GLDrawableFactory.java:85)
     at org.ww2d.core.Program.main (Program.java:56)
  ^C
  %

After a long time debugging the issue, I discovered that the problem
is a dependency of libjogl.so itself.  The libjawt.so library isn't
found, and this is reported as a problem with finding libjogl.so.

  % ldd libjogl.so
          linux-gate.so.1 =>  (0xffffe000)
          libGL.so.1 => /usr/X11R6/lib/libGL.so.1 (0x4014a000)
          libGLU.so.1 => /usr/X11R6/lib/libGLU.so.1 (0x401ad000)
          libX11.so.6 => /usr/X11R6/lib/libX11.so.6 (0x4022c000)
          libjawt.so => not found
          libc.so.6 => /lib/tls/libc.so.6 (0x402f8000)
          libpthread.so.0 => /lib/tls/libpthread.so.0 (0x40430000)
          libXxf86vm.so.1 => /usr/X11R6/lib/libXxf86vm.so.1 (0x40442000)
          libXext.so.6 => /usr/X11R6/lib/libXext.so.6 (0x40447000)
          libdl.so.2 => /lib/tls/libdl.so.2 (0x40455000)
          libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x40459000)
          libm.so.6 => /lib/tls/libm.so.6 (0x40537000)
          libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x4055d000)
          /lib/ld-linux.so.2 (0x80000000)
  %

I managed to get cacao to "find" jogl by adding /usr/lib/classpath/ to
LD_LIBRARY_PATH, and thus make sure the dynamic linker is able to
locate libjawt.so.  Now it hangs after displaying a gray screen.  One
step further, in other words. :)

Can someone please change cacao to report more accurately that the
loading of libjogl.so fail because libjawt.so (or just some
dependency) is missing, instead of saying that libjogl.so isn't found.

-- System Information:
Debian Release: testing/unstable
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: i386 (i686)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.8-2-386
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)

Versions of packages cacao depends on:
ii  binutils             2.16.1cvs20060117-1 The GNU assembler, linker and bina
ii  classpath            2:0.90-1            clean room standard Java libraries
ii  classpath-common     2:0.90-1            architecture independent files
ii  libc6                2.3.6-3             GNU C Library: Shared libraries an
ii  libltdl3             1.5.22-4            A system independent dlopen wrappe
ii  zlib1g               1:1.2.3-11          compression library - runtime

cacao recommends no packages.

-- no debconf information