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I've got quite strange problem with pi4j library to Raspberry Pi. I have Maven project in Eclipse and just added repository and dependency for pi4j like this:

<repository> <id>oss-snapshots-repo</id> <name>Sonatype OSS Maven Repository</name> <url>https://oss.sonatype.org/content/groups/public</url> <snapshots> <enabled>true</enabled> <updatePolicy>always</updatePolicy> </snapshots> </repository> <dependency> <groupId>com.pi4j</groupId> <artifactId>pi4j-core</artifactId> <version>1.0-SNAPSHOT</version> </dependency>

I don't have any pi4j code in my project and I get this error while doing mvn install:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-shade-plugin:2.1:shade (default) on project kosciol-main: Error creating shaded jar: error in opening zip file d:\Programy\apache-maven-3.1.1\m2\repositories\com\pi4j\pi4j-native\1.0-SNAPSHOT\pi4j-native-1.0-SNAPSHOT-hard-float.so -> [Help 1]

If I delete dependency, project compiles without errors... I tried to delete this pi4j repository from m2 folder but this didn't help. How can I solve it?

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  • .so files are typically the lnux equivalent of ".dll" in windows. Maybe it's not compat. with windows...see also github.com/Pi4J/pi4j/issues/125 Commented Dec 14, 2020 at 17:46

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Try to specify the scope of the dependency as "provided", like this:

 <dependency> <groupId>com.pi4j</groupId> <artifactId>pi4j-core</artifactId> <version>1.0-SNAPSHOT</version> <scope>provided</scope> </dependency>
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