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      <base href="https://llvm.org/bugs/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW " title="NEW --- - clang ignores --sys-root when looking for libc++ headers" href="https://urldefense.proofpoint.com/v2/url?u=https-3A__llvm.org_bugs_show-5Fbug.cgi-3Fid-3D23691&d=AwMBaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=pF93YEPyB-J_PERP4DUZOJDzFVX5ZQ57vQk33wu0vio&m=mFbcPQjWT1faHFN3j7-8ztwXnvXqE-HyfHyspkqtX8Q&s=74Kun8Hzin0n-w_JLiSjXLBDSHRDHtKc_ujQBog9gFk&e=">23691</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>clang ignores --sys-root when looking for libc++ headers
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>clang
          </td>
        </tr>

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

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

        <tr>
          <th>OS</th>
          <td>Linux
          </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>-New Bugs
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>bero@linaro.org
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvmbugs@cs.uiuc.edu
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>When trying to cross-compile a C++ application using libc++, clang includes
libc++ headers from the system instead of the target sysroot.

For example, trying to cross-compile something that does "#include <string>"
with

clang -target x86_64-openmandriva-linux-musl -std=c++11 -stdlib=libc++ test.cpp
--sysroot=/usr/x86_64-openmandriva-linux-musl/sys-root -lc++ -lc++abi

will include
/usr/bin/../include/c++/v1/string

even if /usr/x86_64-openmandriva-linux-musl/usr/include/c++/v1/string exists.</pre>
        </div>
      </p>
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