GCJ and MySQL Connector for Java

Spyros Stathopoulos foucault.online@gmail.com
Tue Nov 22 02:56:00 GMT 2005


Hi Anthony and thanks for your answer,

I am trying out the first way you have suggested, which is the easier
for me to understand :-) , however I have several errors

com/mysql/jdbc/ServerPreparedStatement.java: In class
'com.mysql.jdbc.Connection':
com/mysql/jdbc/ServerPreparedStatement.java: In method
'com.mysql.jdbc.Connection.execSQL(com.mysql.jdbc.Statement,java.lang.String,int,com.mysql.jdbc.Buffer,int,int,boolean,boolean,java.lang.String,boolean,byte)':
com/mysql/jdbc/ServerPreparedStatement.java:2323: error: verification
error at PC=636
com/mysql/jdbc/ServerPreparedStatement.java:2323: error: might
transfer control into subroutine
com/mysql/jdbc/ServerPreparedStatement.java: In class
'com.mysql.jdbc.ServerPreparedStatement':
com/mysql/jdbc/ServerPreparedStatement.java: In method
'com.mysql.jdbc.ServerPreparedStatement.executeBatch()':
com/mysql/jdbc/ServerPreparedStatement.java:713: error: verification
error at PC=521
com/mysql/jdbc/ServerPreparedStatement.java:713: error: might transfer
control into subroutine
com/mysql/jdbc/log/Log4JLogger.java: In class 'com.mysql.jdbc.log.Log4JLogger':
com/mysql/jdbc/log/Log4JLogger.java: In constructor '(java.lang.String)':
com/mysql/jdbc/log/Log4JLogger.java:41: error: cannot find file for
class org.apache.log4j.Logger
com/mysql/jdbc/log/Log4JLogger.java:42: error: cannot find file for
class org.apache.log4j.Logger
com/mysql/jdbc/log/Log4JLogger.java:42: confused by earlier errors, bailing out

By the way I've tried out 3; it doesn't seem to work, however I'm
giving it a try again.

Spyros "Foucault" Stathopoulos

On 11/20/05, Anthony Green <green@redhat.com> wrote:
> On Sun, 2005-11-20 at 17:10 +0200, Spyros Stathopoulos wrote:
> >   I compile it succesfully with gcj as following
> >   gcj -o MySQL-Test --main=org.testing.TestConnectMySQL -classpath
> > /usr/share/java/mysql-connector-java.jar:.
> > src/org/testing/TestConnectMySQ
> > L.java
> >
> >  However when I am trying to execute the output program I get the
> > following error:
> >
> >  Cannot load driver:
> >  java.lang.ClassNotFoundException: com.mysql.jdbc.Driver not found in
> > gnu.gcj.runtime.SystemClassLoader{urls=[file:./,file:./],
> > parent=gnu.gcj.runtime.ExtensionClassLoader{urls=[], parent=null}}
>
> Your program isn't finding the mysql-connector-java code.  There are
> lots of ways to fix this:
>
> 1. Compile mysql-connector-java.jar to native code and force it into the
> MySQL-Test link; or..
>
> 2. On Linux, compile mysql-connector-java.jar into lib-com-mysql-jdbc.so
> and make sure the runtime linker can find it (perhaps by setting
> LD_LIBRARY_PATH); or...
>
> 3. Set your CLASSPATH environment variable to point at
> mysql-connector-java.jar before running MySQL-Test; or...
>
> 4. Do [3] and also set up a mapping between the .jar file and a
> native .so using gcj-dbtool; or...
>
> 5. If you're using Fedora Core 4 or better, just download, build and
> install the mysql connector source RPM from here:
> http://people.redhat.com/green/FC/ , then do [3].  It will use a
> natively compiled version at runtime.
>
> AG
>
>
>



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