well I couldnt get to the B4A part yet, still need to compile this so I can have the jar/xml
as far as I found on web, this might be caused by a long command trying to be executed from cmd.exe
I dont know how exactly SLC works but if it is executing javac.exe from cmd this might be the reason since the asmack library has over 500 individual java files and that might create a long command which is over the cmd limit of 8191 characters (http://support.microsoft.com/kb/830473)
This is probably the reason. You do not need to compile the whole asmack library. You should instead include it as a Jar in the libs folder and use @DependsOn annotation to reference it in your project.