What is best practice to call `SymbolLookup.libraryLookup()` in cross-platform way?

[Duncan Gittins]

 On Windows libraryLookup call does not require ".dll", for example this
works in jshell:

     SymbolLookup ole = SymbolLookup.libraryLookup("ole32", Arena.global());

Kind regards

Duncan


On Thu, 29 Jan 2026 at 15:14, Lev Serebryakov <lev at blacklion.dev> wrote:

> Hello!
>
>   I wonder, is there best practices for `SymbolLookup.libraryLookup()`?
>
>   I mean, in POSIX-like systems it look in system directories and I can
> simply pass `"libname"` as argument. But on Windows it doesn't work even
> with `-Djava.library.path` which points do directory with `libname.dll`,
> looks like I need ".dll" to name.
>
>   Check for OS via property "os.name" looks like bad solution: maybe, on
> other systems, which I'm not ware about, I need add other extension, and my
> code which check will fails!
>
>   And I cannot understand what should I pass in MacOS. I've tried "name",
> "libname", "libname.dylib" — nothing works. Library file is "libname.dylib"
> in directory passed as `-Djava.library.path".
>
>   Is here better and future-proof way?
>
>   I can copy code from JNA, but I don't like it very much, to be honest.
>
> Thnak you.
>
> --
> // Lev Serebryakov
>
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