Re: [Java-gnome-developer] Compiling java-gnome applications with GCJ

[Andrew C. <an...@op...>]

On Fri, 2007-04-20 at 15:48 -0500, Yaakov (Cygwin Ports) wrote:=20
> You need to add '-fjni' to your LDFLAGS

Hm. Actually, I don't think so.

We really only use GCJ for debugging, but you don't need to compile an
application with -fjni if that app just _links_ against a [Java] library
(AOT compiled .so).

Certainly when we build the java-gnome *library* (which is what actually
makes the JNI calls) _it_ we have to have -fjni on the gcj command line,
but to build any old program, we just do:

$ gcj -lgtkjava-4.0 --main=3DCricketScores -o cricket CricketScores.java
$ ./cricket

The command we use to build the Experiment class that ships in
tests/prototype/ is similar:

$ make
$ gcj -g -Wl,-rpath=3Dtmp/ -Ltmp -lgtkjava-4.0 -Djava.library.path=3Dtmp/
-classpath tmp/gtk-4.0.jar --main=3DExperiment -o experiment
tests/prototype/Experiment.java
$ ./experiment

with all that extra noise just being what you have to do to deal with
linking against the still-in-place version of the compiled library,
rather than that which has been installed somewhere more sensible.

AfC
Sydney