raspberrypi 5.15.61-v8+ pi4j not work

[wbhstudy]

root@raspberrypi:/opt/pi4j/examples# ls
'ADS1015DistanceSensorExample$1.class' LcdExample.class 'PibrellaExample$1.class'
ADS1015DistanceSensorExample.class LcdExample.java 'PibrellaExample$2.class'
ADS1015DistanceSensorExample.java 'ListenGpioExample$1.class' 'PibrellaExample$SampleTuneThread.class'
'ADS1015GpioExample$1.class' ListenGpioExample.class PibrellaExample.class
ADS1015GpioExample.class ListenGpioExample.java PibrellaExample.java
ADS1015GpioExample.java 'ListenMultipleGpioExample$1.class' 'PiFaceExample$1.class'

build is ok .but run got an error

/usr/local/jdk1.8.0_341/bin/java -classpath .:classes:/opt/pi4j/lib/'*' SerialExample

Sep 21, 2022 5:50:14 PM com.pi4j.util.NativeLibraryLoader load
SEVERE: Unable to load [libpi4j.so] using path: [/lib/raspberrypi/dynamic/libpi4j.so]
java.lang.UnsatisfiedLinkError: /tmp/libpi4j4651277331156745344.so: /tmp/libpi4j4651277331156745344.so: wrong ELF class: ELFCLASS32 (Possible cause: architecture word width mismatch)
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1937)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1820)
at java.lang.Runtime.load0(Runtime.java:810)
at java.lang.System.load(System.java:1086)
at com.pi4j.util.NativeLibraryLoader.loadLibraryFromClasspath(NativeLibraryLoader.java:159)
at com.pi4j.util.NativeLibraryLoader.load(NativeLibraryLoader.java:105)
at com.pi4j.jni.Serial.(Serial.java:101)
at com.pi4j.io.serial.Baud.(Baud.java:36)
at com.pi4j.io.serial.SerialConfig.(SerialConfig.java:35)
at SerialExample.main(SerialExample.java:109)

---

| Connecting to: /dev/ttyACM0 (115200,8N1) {FC:NONE} |
| We are sending ASCII data on the serial port every 1 second. |
| Data received on serial port will be displayed below. |

Exception in thread "main" java.lang.UnsatisfiedLinkError: com.pi4j.jni.Serial.open(Ljava/lang/String;IIIII)I
at com.pi4j.jni.Serial.open(Native Method)
at com.pi4j.io.serial.impl.SerialImpl.open(SerialImpl.java:151)
at com.pi4j.io.serial.impl.SerialImpl.open(SerialImpl.java:311)
at SerialExample.main(SerialExample.java:138)

---

                       GOODBYE                          

---

*/
public static void main(String args[]) throws InterruptedException, IOException {
System.setProperty("pi4j.library.path", "local");
// !! ATTENTION !!
// By default, the serial port is configured as a console port
// for interacting with the Linux OS shell. If you want to use
// the serial port in a software program, you must disable the
// OS from using this port.
and system ,local, Absolute Path all not work , get the same error ！

how to slove this error ？？？ thank you .

[taartspi]

wrong ELF class: ELFCLASS32 (Possible cause: architecture word width mismatch) I think you have a mix of 32bit and 64bit code. All code must be built for the architecture and bit width of the OperatingSystem. From the error I think the architecture (ARM) is correct, but a miss-match 32 VS 64.

[wbhstudy]

yes , mix of 32bit and 64bit code. thank you so much.

[FDelporte]

@taartspi good catch! I'm wondering if we would be able to catch this in the code and show this as an explicit exception...