trouble compiling app w/ jni

Sat Apr 14 07:47:00 GMT 2001

thanks. it now compiles. running it, however just says "Aborted" and quits.
the first tree lines of main() print the command line args so it's not even
getting that far. under gdb I get this:
Starting program: /local/uml/opt/sys/foo 
[New Thread 1024 (LWP 14550)]
[New Thread 2049 (LWP 14551)]
[New Thread 1026 (LWP 14552)]
Program received signal SIGABRT, Aborted.
[Switching to Thread 1026 (LWP 14552)]
0x4036ffe1 in __kill () from /lib/libc.so.6
(gdb) bt
#0 0x4036ffe1 in __kill () from /lib/libc.so.6
#1 0x40324ceb in raise (sig=6) at signals.c:65
#2 0x40371582 in abort () at ../sysdeps/generic/abort.c:88
#3 0x804a31b in __default_terminate () at ../../gcc/libgcc2.c:3034
#4 0x804a33a in __terminate () at ../../gcc/libgcc2.c:3034
#5 0x804b08a in throw_helper (eh=0x8094bb0, pc=0x402d327f,
my_udata=0xbf7ff888, offset_p=0xbf7ff884) at ../../gcc/libgcc2.c:3168
#6 0x804b33f in __rethrow (index=0x402d3280) at ../../gcc/libgcc2.c:3168
#7 0x401d2d22 in java::lang::Class::initializeClass (this=0x8050c20) at
../../../libjava/java/lang/natClass.cc:762
#8 0x402d3280 in .LRTH348 () from /usr/lib/libgcj.so.1
#9 0x5b000000 in ?? ()
Cannot access memory at address 0xe8f689
I'm not well versed in gdb. How do I track the reason for the class failing
to initialize?
stewart
> Stewart wrote:
>> and the LD_LIBRARY_PATH is set correctly. foo.class is dependent on
>> syscall.class which contains native methods and uses libsyscall.so
>> (sucessfully compiled).
>> You need to compile syscall.class with -fjni. The documentation says:
> "With gcj there are two options for writing native methods: CNI and
> JNI. By default gcj assumes you are using CNI. If you are compiling a
> class with native methods, and these methods are implemented using JNI,
> then you must use -fjni. This option causes gcj to generate stubs which
> will invoke the underlying JNI methods."
>> AG