On Sun, 2005-11-20 at 20:49 +0200, Spyros Stathopoulos wrote: > OK, I have something new, however I do not know if this is a "legal" way. You're almost there. > I've bundled all the source files for mysql connector found in the > source rpm in a single jar file and compiled it into a shared library, > which I've copied in /usr/lib. > > gcj -classpath /usr/share/java/log4j.jar -shared -o > libmysql-connector-java-3.1.8.so mysql-connector-java-3.1.8.jar > > After running ldconfig, I compile sucessfully my program with GCJ as following: > > gcj -O0 -g "--classpath=/usr/share/java/mysql-connector-java.jar:./src/:" > -c src/org/testing/TestConnectMySQL.java -o > src/org/testing/TestConnectMySQL.o > > gcj -O0 -g --main=org.testing.TestConnectMySQL > src/org/testing/Connect.o -odebug/MySQL-Test -Ldebug > -lmysql-connector-java-3.1.8 Your program has no symbolic reference to the mysql driver, it's just a textual reference. So linking the driver .so file to the executable will have no effect. When I said you need to force the library into you program, I meant by creating mysql-connector-java-3.1.8.a file and the linking with -Wl,--whole-archive,-lmysql-connector-java-3.1.8,--no-whole-archive. Or you can rename the .so file to lib-com-mysql-jdbc.so, which is a special name recognized by the gcj runtime (run your program with strace to see how it tries to find libraries at runtime). Or you can include a symbolic reference to a com.mysql.jdbc class to force the .so to be loaded into your application. You can also try running your program like so: $ LD_PRELOAD=/usr/lib/libmysql-connector-java-3.1.8.so ./debug/MySQL-Test Although I'm not certain if that last trick will work. AG
