Re: is awt/swing supposed to work ?

[Joel Dice]

On Wed, 27 Mar 2013, the....@gmail.com wrote:

> The missing library hints me that Avian doesn't support awt or at least on
> OSX, is it true ?

I've only tried AWT/Swing on Linux so far, so I'm not surprised if it
doesn't work on OS X or Windows. It shouldn't be too hard to make it
work, though; we just need to find where libawt.dylib is located and make
sure the VM's library path includes that directory. There might be other
changes needed, too, but that's where I would start.

[Joel Dice]

On Wed, 27 Mar 2013, the....@gmail.com wrote:

> ok, how do I add a library to the VM path ?

You'll want to add the directory to the path created in the MyClasspath
constructor in classpath-openjdk.cpp. I'm kind of surprised the VM isn't
already finding libawt.dylib and libosx.dylib, though, since those are
both present in $JAVA_HOME/jre/lib on my system. Maybe dlopen can find
them but can't load them for some reason; you might want to try rebuilding
with Verbose = true in posix.cpp, which will print any error messages from
dlopen.

[Joel Dice]

On Wed, 27 Mar 2013, the....@gmail.com wrote:

> well, I don't have $JAVA_HOME set, I'm trying to make a bundle out of Avian,
> without any dependency.Is it not possible to bundle libs in avian ?

Ah, then you must be doing an openjdk-src build. You've got two options
to make that work with Swing/AWT -- one is to track down all the .c files
needed to build libawt.dylib (and maybe libosx.dylib and whatever else is
needed) and add them to openjdk-src.mk. The other option is to add those
dylibs to your embedded jars and extract them onto the filesystem at
runtime and load them before they're needed.

[Scott Duensing]

Best of luck!  The closer Avian is to an everything-compiled-into-one-big-blob Java runtime, the happier I am!  :-)

Scott

On Wednesday, March 27, 2013 2:41:32 PM UTC-5, the....@gmail.com wrote:

ok, I'll try that and hopefully push it to git (no warranty though)

[Joel Dice]

On Thu, 28 Mar 2013, the....@gmail.com wrote:

> about big blobs,�I don't feel like I have the skills to add those .m files
> to compile time, I'm a Java guy with poor C skills :-/

Yeah, it's a pain to do even when you know what you're doing :)

> However, I thought that maybe we could pack the compiled .dylib (maybe even
> .so and .dll lets not be racist) inside avian and load them dynamically ?
> like modify Classloader.java and/or the underlying lib-loading magic to keep
> a static list of libs to be loaded from inside ?

Yes, that's basically what I was suggesting. I recommend doing what SWT
does: embed the libraries in the jar (e.g. classpath.jar) and extract them
from that jar at runtime using Class.getResourceAsStream, then load them
using System.load:

http://git.eclipse.org/c/platform/eclipse.platform.swt.git/tree/bundles/org.eclipse.swt/Eclipse%20SWT%20PI/common_j2se/org/eclipse/swt/internal/Library.java

[Scott Duensing]

Technically, I don't care how it works.  :-)  What I'm personally after is a self-contained jMonkeyEngine runtime.  This technique gives me something new to play with.  :-)  Thanks!

On Thursday, March 28, 2013 5:08:35 PM UTC-5, Joel Dice wrote:

On Thu, 28 Mar 2013, the....@gmail.com wrote:

> about big blobs,�I don't feel like I have the skills to add those .m files

[the....@gmail.com]

I had some time to work on that issue:

I re-built avian and openjdk up to date and tried a very simple test case.

However, when I try to run it, it simply fails:

MacBookAirMax:Logetel max$ avian -jar ~/Desktop/av.jar /Users/max/Desktop/libawt.dylib 

the file you passed exists

java/lang/UnsatisfiedLinkError: library not found: /Users/max/Desktop/libawt.dylib

  at java/lang/ClassLoader.loadLibrary (native)

  at java/lang/Runtime.load0 (line 792)

  at java/lang/System.load (line 1059)

  at avtest/AvianTest.main (line 17)

(the libawt.dylib file is fresh from the open-jdk compilation)

What do you think ?