[Rxtx] Difficulty with --disable-lockfiles and RedHat

[Jim Owen]

Hi All,
 
    I've run into some difficulties with rxtx that have me baffled and need
some help.
 
    I have an application that has used earlier versions of rxtx
successfully and on a variety of platforms. We recently needed to deploy
this application into an environment where we could not utilize lock files. 
 
    I pulled down the 2.0.7 pre1 source distribution and executed configure
with --disable-lockfiles.  I then executed make and make install.
 
    When I execute the program, as root, I get the following error:
 
************************************************************************
Verifying Comm Build Environment
Devel Library
=========================================
Native lib Version = RXTX-2.0-7pre1
Java lib Version   = RXTX-2.0-7pre1
#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
#  SIGSEGV (0xb) at pc=0x00001004, pid=20151, tid=3086030528
#
# Java VM: Java HotSpot(TM) Client VM (1.4.2_11-b06 mixed mode)
# Problematic frame:
# C  0x00001004
#
# An error report file with more information is saved as hs_err_pid20151.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
#
****************************************************************************
 
    If I execute as a normal user, I get no errors, but no ports listed:
(Using an earlier version, I get a serial and parallel port listed.)
 
****************************************************************************
[jim at linuxDev ingenicoApp]$ java VerifyCommBuild
Verifying Comm Build Environment
Devel Library
=========================================
Native lib Version = RXTX-2.0-7pre1
Java lib Version   = RXTX-2.0-7pre1
Some ports appear to have been found, let's try to enumerate them.
Complete.
****************************************************************************
    
    When I built rxtx, there was a warning given of the following:
 
****************************************************************************
conftest.c: In function 'main':
conftest.c:6: warning: incompatible implicit declaration of built-in
function 'printf'
conftest.c:7: warning: incompatible implicit declaration of built-in
function 'exit'
 
       WARNING:  Kernel include files do not match the current kernel
****************************************************************************
 
    
    uname -a from my development system: Linux linuxDev 2.6.11-1.1369_FC4 #1
Thu Jun 2 22:55:56 EDT 2005 i686 i686 i386 GNU/Linux

    JAVA_HOME=/usr/java/j2sdk1.4.2_11
 
    javax.comm.properties: Driver=gnu.io.RXTXCommDriver
 
    Here's the code for VerifyCommBuild.java that I'm using to test:
 
 
****************************************************************************
import javax.comm.*;
import java.util.Enumeration;
/**
* A quick app to check that the javax.comm (Serial) Communications
extension has been properly
* installed and configured on this machine.
* Based on a sample app on IBM developerworks; modified by bsuter 5/2003.
*/
public class VerifyCommBuild
{
    public static void main(String args[])
    {    
        Enumeration ports;
        System.out.println("Verifying Comm Build Environment");
        try
        {
            ports = CommPortIdentifier.getPortIdentifiers();
            if (ports == null)
            {   
                System.out.println("No comm ports found!");
                return;
            }
            System.out.println("Some ports appear to have been found, let's
try to enumerate them.");
            while (ports.hasMoreElements())
            {
                System.out.println("Here is a port [" +
                        ((CommPortIdentifier)ports.nextElement()).getName()
+ "]");
            }
        } catch (Exception e)
        {
            System.out.println("Failed to enumerate ports [" +
e.getMessage() + "]");
            e.printStackTrace();
        }
        System.out.println("Complete.");
    }
}

****************************************************************************
 
    Any suggestions as to what I'm missing?
    
    Thanks,
 
    Jim Owen
 
 
 
 
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