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UnsatisfiedLinkError libpi4j-pigpio.so #411

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RonaldTHerman opened this issue Nov 15, 2024 · 13 comments
Open

UnsatisfiedLinkError libpi4j-pigpio.so #411

RonaldTHerman opened this issue Nov 15, 2024 · 13 comments

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@RonaldTHerman
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RonaldTHerman commented Nov 15, 2024 •
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Yeah, I know. This is a beginners problem except I've been using pi4j for several years now.. I have two java apps running on separate Pi's. (pi4b and pi3b) two days ago everything was running fine then all at once I get the old UnsatisfiedLinkError for libpi4j-pigpio. Both apps are developed on MacOS using NetBeans 12.6 so my first suspicion was the common jar files that both use. Not knowing if a file was corrupted, I upgraded to pi4j- 2.7 in NetBeans. That didn't work.. I triple checked my script files that set up the environment to make sure the parameters "-Dpi4j.library.path=$CLASSPATH -Djava.lib.path=$CLASSPATH" are in the command line.That checked.. The only other thing that I did was system upgrades on both Pi's.. I see the java I'm running with now is dated Oct 2024... since it's been a while since I did an upgrade I'm wondering if there is something fishy the latest version. QUESTION:is there a way to get an older version of java and how do I remove the newer and replace with the older version?
@FDelporte
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It would be very suspicious if the Java update breaks Pi4J. Can you provide the full output of java -version please?

@RonaldTHerman
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I also forgot to mention that I tried running an earlier version of my code to no avail.

Here's my evidence :-)

TUNER>java -version
openjdk version "11.0.25" 2024-10-15
OpenJDK Runtime Environment (build 11.0.25+9-post-Raspbian-1deb11u1)
OpenJDK Server VM (build 11.0.25+9-post-Raspbian-1deb11u1, mixed mode)

My command file
! /bin/bash
export CWD=$PROJ/Tune
export DIST="$CWD/dist"
export CLASSPATH=$DIST/lib
cd $CWD
sudo -E java -Dlog4j.ConfigurationFile=$HOME/Tune/log4j2.xml
-Dpi4j.library.path=$CLASSPATH -Djava.lib.path=$CLASSPATH -jar $DIST/Tune.jar $1

My library directory
All pi4j files are version 2.7
TUNER>pwd
/home/pi/NetBeansProjects/Tune/dist/lib
TUNER>dir
total 2968
-rwxrwxrwx 1 pi pi 68115 Nov 14 15:35 slf4j-api.jar
-rwxrwxrwx 1 pi pi 28051 Nov 14 15:35 pi4j-plugin-raspberrypi.jar
-rwxrwxrwx 1 pi pi 42130 Nov 14 15:35 pi4j-plugin-pigpio.jar
-rwxrwxrwx 1 pi pi 151659 Nov 14 15:35 pi4j-library-pigpio.jar
-rwxrwxrwx 1 pi pi 344441 Nov 14 15:35 pi4j-core.jar
-rwxrwxrwx 1 pi pi 1847550 Nov 14 15:35 log4j-core-2.20.0.jar
-rwxrwxrwx 1 pi pi 313296 Nov 14 15:35 log4j-api-2.20.0.jar
-rwxrwxrwx 1 pi pi 33696 Nov 14 15:35 libpi4j-pigpio.so
-rwxrwxrwx 1 pi pi 125099 Nov 14 15:35 Utilities.jar
-rwxrwxrwx 1 pi pi 60409 Nov 14 15:35 RaspberryPi.jar

The exception printout
CWD=/home/pi/NetBeansProjects/Tune
DIST=/home/pi/NetBeansProjects/Tune/dist
CLASSPATH=/home/pi/NetBeansProjects/Tune/dist/lib
/home/pi/NetBeansProjects/Tune
/home/pi/NetBeansProjects/Tune/dist
/home/pi/NetBeansProjects/Tune/dist/lib
SLF4J(W): No SLF4J providers were found.
SLF4J(W): Defaulting to no-operation (NOP) logger implementation
SLF4J(W): See https://www.slf4j.org/codes.html#noProviders for further details.
Exception in thread "main" java.lang.UnsatisfiedLinkError: Pi4J was unable to extract and load the native library [/home/pi/NetBeansProjects/Tune/dist/lib/libpi4j-pigpio.so] from the embedded resources inside this JAR [/home/pi/NetBeansProjects/Tune/dist/lib/pi4j-library-pigpio.jar]. to a temporary location on this system. You can alternatively define the 'pi4j.library.path' system property to override this behavior and specify the library path.
UNDERLYING EXCEPTION: [java.lang.UnsatisfiedLinkError]=/home/pi/NetBeansProjects/Tune/dist/lib/libpi4j-pigpio.so: libpigpio.so.1: cannot open shared object file: No such file or directory
at com.pi4j.library.pigpio.util.NativeLibraryLoader.load(NativeLibraryLoader.java:145)
at com.pi4j.library.pigpio.internal.PIGPIO.(PIGPIO.java:74)
at com.pi4j.library.pigpio.impl.PiGpioNativeImpl.gpioInitialise(PiGpioNativeImpl.java:105)
at com.pi4j.library.pigpio.PiGpio.initialize(PiGpio.java:159)
at com.pi4j.plugin.pigpio.provider.i2c.PiGpioI2CProviderImpl.create(PiGpioI2CProviderImpl.java:77)
at com.pi4j.plugin.pigpio.provider.i2c.PiGpioI2CProviderImpl.create(PiGpioI2CProviderImpl.java:46)
at raspberrypi.I2CPi4j.(I2CPi4j.java:63)
at QWIK.ADS1015.(ADS1015.java:107)
at QWIK.ADS1015.getInstance(ADS1015.java:95)
at HATS.StepperHat.(StepperHat.java:45)
at tuner.Controller.TUNE_main(Controller.java:90)
at tuner.Controller.main(Controller.java:63)

This is why I think I got a recent version of java when I did a system upgrade two days ago after which I get the exception
TUNER>pwd
/usr/lib/jvm/java-11-openjdk-armhf/bin
TUNER>dir java
-rwxr-xr-x 1 root root 5548 Oct 21 08:21 java

What ever version was present before that was working. I can't remember when I upgraded last.. probably a couple months ago

Hope this helps

@FDelporte
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Just an idea... can you try sdkman and install an earlier 11 version?

@RonaldTHerman
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RonaldTHerman commented Nov 16, 2024 via email

@FDelporte
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On my mac it shows:

$ sdk list java
...
               |     | 11.0.25.fx   | zulu    |            | 11.0.25.fx-zulu                                                                                                                         
               |     | 11.0.25      | zulu    |            | 11.0.25-zulu                                                                                                                            
               |     | 8.0.432.fx   | zulu    |            | 8.0.432.fx-zulu                                                                                                                         
               |     | 8.0.432      | zulu    |            | 8.0.432-zulu                                                                                                                            
               |     | 8.0.362      | zulu    | local only | 8.0.362-zulu

Another solution could be to follow these guidelines https://docs.azul.com/core/install/debian with an earlier version from https://www.azul.com/downloads/?version=java-11-lts&os=debian&package=jdk&show-old-builds=true#zulu

@RonaldTHerman
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I tried the azul thing but....
522 sudo apt install gnupg ca-certificates curl
523 curl -s https://repos.azul.com/azul-repo.key | sudo gpg --dearmor -o /usr/share/keyrings/azul.gpg
524 echo "deb [signed-by=/usr/share/keyrings/azul.gpg] https://repos.azul.com/zulu/deb stable main" | sudo tee /etc/apt/sources.list.d/zulu.list
525 sudo apt update
526 sudo apt install zulu21-jdk
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
E: Unable to locate package zulu21-jdk

What am I missing?

@FDelporte
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Are you running on a 32- or 64-bit system? On which type of board did you try this?

@RonaldTHerman
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RonaldTHerman commented Nov 18, 2024 via email

@RonaldTHerman
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RonaldTHerman commented Nov 18, 2024 via email

@FDelporte
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Sorry for the ongoing questions... ;-)
What is the output from this script?
https://github.com/FDelporte/PiJava/blob/master/scripts/pi_checks/check_raspian_version.sh

@RonaldTHerman
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RonaldTHerman commented Nov 18, 2024 via email

@RonaldTHerman
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Did the additional version info give any clues? I'm up against a wall. What worked before doesn't anymore and every variable points to the lib and the file is in the lib.

@RonaldTHerman
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Just tried pi4j-2.71-SNAPSHOT.. no change

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