Re: undefined symbol __gcj_personality_v0

On 04/12/2010 06:08 PM, Keith wrote:
> The Windows version compiles but does not do anything when I run it. No
> error messages show up and nothing is logged and no window appears. main
> starts out with
> 
>  public static void main(String[] args) throws Exception
>  {
>    Display display = null;
>      System.out.println("Starting main");
> 
> but I do not see any message. I do see the message under Eclipse and the
> other AOT compiler.
> 
> I am at a loss for what to do next so I am creating a linux->Windows
> cross compile for my java/jni program, I am first trying to get a good
> working compile under linux.

Hard to say what is the cause, but there is no way you're going to get
much further without using gdb.

Did you run the libgcj test suite?

Andrew.


> When I run the program under Eclipse I get:
> 
> Exception in thread "main" java.lang.UnsatisfiedLinkError:
> /home/keith/jprojects/pps/build/libunikey.so:
> /home/keith/jprojects/pps/build/libunikey.so: undefined symbol:
> __gcj_personality_v0
>    at java.lang.ClassLoader$NativeLibrary.load(Native Method)
> 
> unikey.so is a library compiled with
> gcc 4.4.3 (just downloaded and compiled) on linux
> 
> Reading specs from /usr/lib/gcc/i486-slackware-linux/4.3.3/specs
> Target: i486-slackware-linux
> Configured with: ../gcc-4.3.3/configure --prefix=/usr --libdir=/usr/lib
> --enable-shared --enable-bootstrap
> --enable-languages=ada,c,c++,fortran,java,objc --enable-threads=posix
> --enable-checking=release --with-system-zlib
> --disable-libunwind-exceptions --enable-__cxa_atexit --enable-libssp
> --with-gnu-ld --verbose --with-arch=i486 --target=i486-slackware-linux
> --build=i486-slackware-linux --host=i486-slackware-linux
> Thread model: posix
> gcc version 4.3.3 (GCC)
> 
> Linux linux1 2.6.30.5 #1 SMP PREEMPT Fri Aug 21 11:41:31 EDT 2009 i686
> Mobile Intel(R) Pentium(R) 4 - M CPU 1.80GHz GenuineIntel GNU/Linux
> 
> Compile line is:
> 
> gcc -ldl -fPIC -rdynamic
> -Wl,--version-script=/usr/local/src/gcc-4.4.3/libjava/libgcj.ver -fPIC
> -L/usr/local/lib -I/usr/local/include
> -I/usr/local/bin/jdk1.6.0_19/include
> -I/usr/local/bin/jdk1.6.0_19/include/linux -I. -c unikey.cpp -o unikey.o
> 
> gcc -ldl -fPIC -rdynamic
> -Wl,--version-script=/usr/local/src/gcc-4.4.3/libjava/libgcj.ver -shared
> -Wl,-soname,libunikey.so -o libunikey.so unikey.o
> 
> Whether -rdynamic and/or -Wl,--version-script is there seems to make no
> difference.
> 
> I am running the program under Eclipse SDK Version 3.5.2 Build id:
> M20100211-1343 (just downloaded)
> and java 1.6.0_19 (just downloaded)
> 
> Do I need to recompile something or alter a parameter?
> 
> 
> 
>