<html>
    <head>
      <base href="https://llvm.org/bugs/" />
    </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 --- - Linking fails on OS X with -flto"
   href="https://llvm.org/bugs/show_bug.cgi?id=26963">26963</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Linking fails on OS X with -flto
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>compiler-rt
          </td>
        </tr>

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

        <tr>
          <th>Hardware</th>
          <td>Macintosh
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>MacOS X
          </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>compiler-rt
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>dane@mapbox.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>From reading <a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED FIXED - llvm build with -flto installs libclang_rt.* archives that contain bitcode"
   href="show_bug.cgi?id=18279">https://llvm.org/bugs/show_bug.cgi?id=18279</a> it appears that it may
be impossible to build compiler-rt with the -flto flag. Just in case this
should work on OS X i'm filing this issue with what I see when doing this:

error:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib:
library member:
lib/clang/3.9.0/lib/darwin/libclang_rt.profile_osx.a(InstrProfilingRuntime.cc.o)
is not an object file (not allowed in a library with multiple architectures)
error:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib:
library member:
lib/clang/3.9.0/lib/darwin/libclang_rt.profile_osx.a(InstrProfilingRuntime.cc.o)
is not an object file (not allowed in a library with multiple architectures)
error:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib:
library member:
lib/clang/3.9.0/lib/darwin/libclang_rt.profile_osx.a(InstrProfilingRuntime.cc.o)
is not an object file (not allowed in a library with multiple architectures)
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ar:
internal ranlib command failed


More details at <a href="https://github.com/springmeyer/build-llvm/issues/2">https://github.com/springmeyer/build-llvm/issues/2</a></pre>
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