Hi,
I am moving away from using the threaded version of Tcl with tclBlend,
because of the segmentation fault I mentioned on this list over the
past week. However, I would like to see if it's possible for me to
have my Java program invoke Tcl scripts.
I wrote the following little test program:
import tcl.lang.*;
public class CallTcl {
public static void main(String[] args) {
doit();
}
public static void doit() {
try {
Interp theInterp = new Interp();
theInterp.eval("puts {Hello, world}");
theInterp.dispose();
} catch (Exception e) {
System.err.println("caught " + e.toString());
}
}
}
When I run this program (i.e., start Java first and have it try to call
Tcl), I get the following error:
Exception in thread "main" java.lang.NullPointerException
at tcl.lang.Interp.create(Native Method)
at tcl.lang.Interp.<init>(Interp.java:129)
at CallTcl.doit(CallTcl.java:8)
at CallTcl.main(CallTcl.java:4)
caught tcl.lang.TclRuntimeError: could not find class java/lang/Object.
Check that your LD_LIBRARY_PATH environment variable includes the
directory where libtclblend.so resides.
Try looking in the directories under the value of tcl_library,
currently: Currently, the CLASSPATH environment variable is set to:
.jar:/home/schwartz/schwartz-colo-dev/isms/SpaceKit/blocks.java/build/bsp
When I start jtclsh and then run it, it works fine:
% package require java
1.3.0
% set j [java::new CallTcl]
java0x1
% puts [$j doit]
Hello, world
Does tclBlend require that Tcl be the first to start? If that's not the
problem, does anyone know what the problem is? My LD_LIBRARY_PATH contains
/usr/local/lib/tcljava1.3.0, which is where my libtclblend.so lives.
Thanks
- Mike
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