CODEWITHSUNDEEP
javaopencvvisual-studio-code
klknowles
klknowles

Reputation: 5

still experiencing linker error despite linking the java jar file in visual studio code

I am trying to build a small personal project with opencv. I included the path to the opencv jar file in visual studio using the java dependencies then referenced libraries but i get the linker error: Exception in thread "main" java.lang.UnsatisfiedLinkError: no opencv_java430 in java.library.path. I have no idea what else i could do

Upvotes: 0

Views: 173

Answers (1)

rzwitserloot
rzwitserloot

Reputation: 103510

UnsatisfiedLinkError isn't about jar files.

It's about 'native' files. These are generally stored as a .jnilib file on mac, as a .DLL on windows, and as a .so file on on most unixen.

They cannot be in jar files.

Some libraries will put in some effort and ship a whole bevy of them (as each architecture and OS has a unique dll/jnilib/so file that is needed) inside the jar, will find the 'right' one for your arch/os combo, unpack it someplace, and try to load it live.

This is either not working, or this library isn't doing that. Presumably the opencv site contains a tutorial on how to get it running; as native files are required, it's a bit more involved than 'just download, add to classpath, and voila'. I suggest you follow it precisely.

If you do have something that seems suitable (probably called opencv_java430.dll or whatnot), start java with java -Djava.library.path=/directory/containing/that/file the.rest.of.your.java.args - that should help.

Upvotes: 1

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