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    <head>
      <base href="https://bugs.llvm.org/">
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Complex division requires -lm on FreeBSD since Clang 3.6"
   href="https://bugs.llvm.org/show_bug.cgi?id=32279">32279</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Complex division requires -lm on FreeBSD since Clang 3.6
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>OpenMP
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>PC
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>FreeBSD
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>enhancement
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Runtime Library
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>unassignedbugs@nondot.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>jbeich@vfemail.net
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>emaste@freebsd.org, joerg@NetBSD.org, llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=18095" name="attach_18095" title="v0">attachment 18095</a> <a href="attachment.cgi?id=18095&action=edit" title="v0">[details]</a></span>
v0

<a href="https://reviews.llvm.org/D5698">https://reviews.llvm.org/D5698</a> made Clang emit calls to __divdc3 which in
compiler-rt use scalbn and reside in math library on FreeBSD. The fix was
provided by Yuta Satoh downstream.

NetBSD appears to have similar dependency on -lm. Joerg, does it work fine with
-Wl,--as-needed?

$ clang40 -fopenmp omp_hello.c
/usr/local/llvm40/lib/libomp.so: undefined reference to `scalbnl'
/usr/local/llvm40/lib/libomp.so: undefined reference to `fmaxl'
/usr/local/llvm40/lib/libomp.so: undefined reference to `logbl'
/usr/local/llvm40/lib/libomp.so: undefined reference to `scalbnf'
/usr/local/llvm40/lib/libomp.so: undefined reference to `logb'
/usr/local/llvm40/lib/libomp.so: undefined reference to `logbf'
/usr/local/llvm40/lib/libomp.so: undefined reference to `scalbn'
clang-4.0: error: linker command failed with exit code 1 (use -v to see
invocation)</pre>
        </div>
      </p>


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