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      <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 - Not able to disable CUDA offloading"
   href="https://bugs.llvm.org/show_bug.cgi?id=44971">44971</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Not able to disable CUDA offloading
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>Build scripts
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>trunk
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

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

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

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

        <tr>
          <th>Component</th>
          <td>cmake
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>alexander.grund@tu-dresden.de
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>The CMake build system only allows to enable or disable the OpenMP target
offloading completely via OPENMP_ENABLE_LIBOMPTARGET. But it is not possible to
disable a specific backend, e.g. CUDA. If CMake finds CUDA it will be enabled
even if the CUDA found is not what is wanted. This may lead to e.g.
<a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Compilation failure LLVM >= 7, gcc > 5 when system CUDA present"
   href="show_bug.cgi?id=39388">https://bugs.llvm.org/show_bug.cgi?id=39388</a>

--> There should be an option to disable specific backends, at least once that
require some external dependency (e.g CUDA)</pre>
        </div>
      </p>


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