Use clang5 to bootstrap clang5+openmp+libcxx

clang5.sh

#! /bin/bash

set -eou pipefail

workdir=`mktemp -d -p $HOME`
workdir=`readlink -f $workdir`
echo $workdir

#trap "{ echo cleaning up $workdir; rm -r $workdir; }" EXIT
trap "{ echo workdir was $workdir; }" EXIT

cd $workdir

# llvm
wget http://releases.llvm.org/5.0.0/llvm-5.0.0.src.tar.xz
tar -vxf llvm-5.0.0.src.tar.xz

# clang
wget http://releases.llvm.org/5.0.0/cfe-5.0.0.src.tar.xz
tar -vxf cfe-5.0.0.src.tar.xz

# libc++
wget http://releases.llvm.org/5.0.0/libcxx-5.0.0.src.tar.xz
tar -vxf libcxx-5.0.0.src.tar.xz

# libc++abi
wget http://releases.llvm.org/5.0.0/libcxxabi-5.0.0.src.tar.xz
tar -vxf libcxxabi-5.0.0.src.tar.xz

# openmp
wget http://releases.llvm.org/5.0.0/openmp-5.0.0.src.tar.xz
tar -vxf openmp-5.0.0.src.tar.xz

# build a basic clang5 to bootstrap the libcxx build
mv cfe-5.0.0.src llvm-5.0.0.src/tools/clang

mkdir -p $workdir/build-base
cd $workdir/build-base && cmake ../llvm-5.0.0.src \
  -DCMAKE_BUILD_TYPE=Release \
  -DLLVM_TARGETS_TO_BUILD="PowerPC"
cd $workdir/build-base && nice -n20 make -j40 -k || make

# use the clang5 build to build clang again, but this time with libcxx
cd $workdir
mv libcxx-5.0.0.src llvm-5.0.0.src/projects/libcxx
mv libcxxabi-5.0.0.src llvm-5.0.0.src/projects/libcxxabi
mv openmp-5.0.0.src llvm-5.0.0.src/projects/openmp
mkdir -p $workdir/build
cd $workdir/build && cmake $workdir/llvm-5.0.0.src \
  -DCMAKE_CXX_COMPILER=$workdir/build-base/bin/clang++ \
  -DCMAKE_C_COMPILER=$workdir/build-base/bin/clang  \
  -DCMAKE_BUILD_TYPE=Release \
  -DCMAKE_INSTALL_PREFIX=$HOME/software/clang-5.0.0

cd $workdir/build && nice -n20 make -j40 -k || make
cd $workdir/build && make install

@cwpearson does it produce correct code though?
@kencu had clang5 built for PowerPC, but it was broken.

Can't speak to that, sorry!

Can't speak to that, sorry!

Thank you for replying, got it.