<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 - Xcode 9 beta breaks the ability to stage2 bootstrap the llvm 4.0.1svn compiler"

   href="https://bugs.llvm.org/show_bug.cgi?id=33415">33415</a>

          </td>

        </tr>

        <tr>

          <th>Summary</th>

          <td>Xcode 9 beta breaks the ability to stage2 bootstrap the llvm 4.0.1svn compiler

          </td>

        </tr>

        <tr>

          <th>Product</th>

          <td>new-bugs

          </td>

        </tr>

        <tr>

          <th>Version</th>

          <td>4.0

          </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>new bugs

          </td>

        </tr>

        <tr>

          <th>Assignee</th>

          <td>unassignedbugs@nondot.org

          </td>

        </tr>

        <tr>

          <th>Reporter</th>

          <td>howarth.mailing.lists@gmail.com

          </td>

        </tr>

        <tr>

          <th>CC</th>

          <td>llvm-bugs@lists.llvm.org

          </td>

        </tr></table>

      <p>

        <div>

        <pre>The Xcode 9 beta release breaks the stage2 build of the llvm 4.0.1svn compiler

with the error...

-- Performing Test LLVM_NO_OLD_LIBSTDCXX

-- Performing Test LLVM_NO_OLD_LIBSTDCXX - Failed

CMake Error at cmake/modules/CheckCompilerVersion.cmake:38 (message):

  Host Clang must be able to find libstdc++4.8 or newer!

Call Stack (most recent call first):

  cmake/config-ix.cmake:14 (include)

  CMakeLists.txt:582 (include)

-- Configuring incomplete, errors occurred!

See also

"/Users/howarth/llvm-branch/build/tools/clang/stage2-bins/CMakeFiles/CMakeOutput.log".

See also

"/Users/howarth/llvm-branch/build/tools/clang/stage2-bins/CMakeFiles/CMakeError.log".

FAILED: tools/clang/stage2-stamps/stage2-configure 

cd /Users/howarth/llvm-branch/build/tools/clang/stage2-bins && /sw/bin/cmake

-DCMAKE_INSTALL_PREFIX=/usr/local -DPACKAGE_VERSION=4.0.1

-DLLVM_VERSION_MAJOR=4 -DLLVM_VERSION_MINOR=0 -DLLVM_VERSION_PATCH=1

-DCLANG_VERSION_MAJOR=4 -DCLANG_VERSION_MINOR=0 -DCLANG_VERSION_PATCHLEVEL=1

-DLLVM_VERSION_SUFFIX= -DLLVM_BINUTILS_INCDIR= -DCLANG_REPOSITORY_STRING=

-DCMAKE_MAKE_PROGRAM=/sw/bin/ninja -DCMAKE_OSX_ARCHITECTURES=

-DCLANG_STAGE=stage2

-DCMAKE_CXX_COMPILER=/Users/howarth/llvm-branch/build/./bin/clang++

-DCMAKE_C_COMPILER=/Users/howarth/llvm-branch/build/./bin/clang

-DCMAKE_ASM_COMPILER=/Users/howarth/llvm-branch/build/./bin/clang -GNinja

/Users/howarth/llvm-branch/llvm-4.0.1.src && /sw/bin/cmake -E touch

/Users/howarth/llvm-branch/build/tools/clang/stage2-stamps//stage2-configure

ninja: build stopped: subcommand failed.

Steps to Reproduce:

With Xcode 9 beta, cmake 3.8.1 and ninja 1.7.2 installed, the following fails

under Xcode 9 beta on 10.12...

svn co <a href="http://llvm.org/svn/llvm-project/cfe/branches/release_40/">http://llvm.org/svn/llvm-project/cfe/branches/release_40/</a> cfe-4.0.1.src

svn co <a href="http://llvm.org/svn/llvm-project/compiler-rt/branches/release_40/">http://llvm.org/svn/llvm-project/compiler-rt/branches/release_40/</a>

compiler-rt-4.0.1.src

svn co <a href="http://llvm.org/svn/llvm-project/llvm/branches/release_40/">http://llvm.org/svn/llvm-project/llvm/branches/release_40/</a>

llvm-4.0.1.src

cd llvm-4.0.1.src/tools

ln -fs </path/to/cfe-4.0.1.src> clang

cd ../projects

ln -fs </path/to/compiler-rt-4.0.1.src> compiler-rt

cd ../..

mkdir build

cd build

cmake -G Ninja -DCLANG_ENABLE_BOOTSTRAP=On </path/to/llvm-4.0.1.src>

ninja -j6 stage2

Expected Results:

I expected the stage2 bootstrap to successfully complete.

Observed Results:

The stage2 bootstrap fails with...

-- Performing Test LLVM_NO_OLD_LIBSTDCXX

-- Performing Test LLVM_NO_OLD_LIBSTDCXX - Failed