<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/144732>144732</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [OCaml] Getting "duplicate libraries" warning from linker
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          ColMcp
      </td>
    </tr>
</table>

<pre>
    _Bindings version_: llvm.19-shared
_OCaml version_: 5.3
_OS_: macOS Sequoia 15.5 on M4 iMac

### Minor annoyance
Dune builds of an executable which references more than one of the libraries in the llvm package get a warning:
`ld: warning: ignoring duplicate libraries: '-lLLVM-19', '-lc++', '-lm', '-lz', '-lzstd'`. The executable runs OK.

I’ve looked at dune’s log file and at some tracing from the `ocamlopt.opt` command dune invokes to link my executable. From the latter I can see that for each library from the llvm bindings package that my executable references `ocamlopt.opt` emits a `-l` argument for the appropriate library plus five others: `-lLLVM-19 -lc++ -lm -lz -lzstd`. The macOS build tool (`clang`) generates the warning I see about these duplicate libraries.
</pre>
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