<html>
    <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 - __ELF__ not defined"
   href="https://bugs.llvm.org/show_bug.cgi?id=32475">32475</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>__ELF__ not defined
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>libc++
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>4.0
          </td>
        </tr>

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

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

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

        <tr>
          <th>Reporter</th>
          <td>rianquinn@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org, mclow.lists@gmail.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>When compiling libcxx / libcxxabi with clang --target=x86_64-elf, __ELF__ is
not defined, in which case the following defines COFF instead of ELF in
__config.h

#if defined(__ELF__)
#define _LIBCPP_OBJECT_FORMAT_ELF   1
#elif defined(__MACH__)
#define _LIBCPP_OBJECT_FORMAT_MACHO 1
#else
#define _LIBCPP_OBJECT_FORMAT_COFF  1
#endif</pre>
        </div>
      </p>


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