java-native-access / java-native-access/jna

JNA does not support QNX

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feature request
Dominant language
Java
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Description

  1. Version of JNA and related jars ----> 5.12.1
  2. Version and vendor of the java virtual machine ----> 1.8.0_351
  3. Operating system ----> QNX
  4. System architecture (CPU type, bitness of the JVM) ----> ARM® Cortex™-A8
  5. Complete description of the problem
     In QNX, I am trying to load a .so file built from a C/C++ project, and I get the following error at the call to the Structure class before loading the library created in JNA.

java.lang.UnsatisfiedLinkError: Native library (com/sun/jna/qnx-aarch32/libjnidispatch.so) not found in resource path (/opt/niagara/bin/ext/annotations-13.0.jar:/opt/niagara/bin/ext/bcstd/bcpkix-jdk15on-1.70.jar:/opt/niagara/bin/ext/bcstd/bcprov-jdk15on-1.70.jar:/opt/niagara/bin/ext/bcstd/bctls-jdk15on-1.70.jar:/opt/niagara/bin/ext/bcstd/bcutil-jdk15on-1.70.jar:/opt/niagara/bin/ext/encoder-1.2.3.jar:/opt/niagara/bin/ext/hsm-2.0.3.jar:/opt/niagara/bin/ext/javax.servlet-api-3.1.0.jar:/opt/niagara/bin/ext/jetty-all-compact3-9.4.48.v20220622.jar:/opt/niagara/bin/ext/jose4j-0.7.11.jar:/opt/niagara/bin/ext/kotlin-stdlib-1.4.20.jar:/opt/niagara/bin/ext/kotlin-stdlib-common-1.4.20.jar:/opt/niagara/bin/ext/niagarad.jar:/opt/niagara/bin/ext/nre.jar:/opt/niagara/bin/ext/okhttp-3.14.9.jar:/opt/niagara/bin/ext/okio-2.10.0.jar:/opt/niagara/bin/ext/slf4j-api-1.8.0.jar:/opt/niagara/bin/ext/tridium-JavaMail-1.5.2.1.jar:/opt/niagara/bin/ext/tridium-activation-1.0.jar)
at com.sun.jna.Native.loadNativeDispatchLibraryFromClasspath(Native.java:1059)
at com.sun.jna.Native.loadNativeDispatchLibrary(Native.java:1015)
at com.sun.jna.Native.(Native.java:221)
at com.sun.jna.Structure.setAlignType(Structure.java:291)
at com.sun.jna.Structure.(Structure.java:208)
at com.sun.jna.Structure.(Structure.java:204)
at com.sun.jna.Structure.(Structure.java:191)
at com.sun.jna.Structure.(Structure.java:183)

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start at Native.loadNativeDispatchLibraryFromClasspath and Native.loadNativeDispatchLibrary, where the stack trace shows JNA searching for qnx-aarch32/libjnidispatch.so. Inspect how native resources are selected and packaged for platform and architecture; done means the QNX ARM Cortex-A8 runtime can load the JNA dispatch library and then the user's .so.

Written by the indexing model from the issue text.

Assessment

Tech stack
c, cpp, java
Domain
operating-systems
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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