gistfile1.txt

# Ubuntu 12.04 LTS Clang3.3 + libc++
# ==================================
# Do not use old Clang 3.0 for bootstrapping...
# which does not work.
# Perl is required in some LLVM build processes.

set -e

# apt-get sometimes exits with non-zero code even it installed successfully.
# And that makes script to halt. This is nonsense and ridiculous!
# Force it to continue by wrapping apt-get block with sub-script.
bash << +END
apt-get -y install gcc g++ make cmake perl
exit 0
+END
echo $?


export SYSLIBPATH=/usr/local/lib





# Build Clang using GCC and libstdc++
# -----------------------------------
cd ~/
mkdir t1
cd t1

curl -O http://llvm.org/releases/3.3/cfe-3.3.src.tar.gz &
curl -O http://llvm.org/releases/3.3/llvm-3.3.src.tar.gz &
curl -O http://llvm.org/releases/3.3/compiler-rt-3.3.src.tar.gz &
curl -O http://llvm.org/releases/3.3/clang-tools-extra-3.3.src.tar.gz &
curl -O http://llvm.org/releases/3.3/libcxx-3.3.src.tar.gz &
curl -O http://llvm.org/releases/3.3/lldb-3.3.src.tar.gz &

wait
echo "Downloading done."

tar zxvf cfe-3.3.src.tar.gz
tar zxvf llvm-3.3.src.tar.gz
tar zxvf compiler-rt-3.3.src.tar.gz
tar zxvf clang-tools-extra-3.3.src.tar.gz
tar zxvf libcxx-3.3.src.tar.gz
tar zxvf lldb-3.3.src.tar.gz

mv llvm-3.3.src llvm
mv cfe-3.3.src llvm/tools/clang
mv clang-tools-extra-3.3.src llvm/tools/clang/extra
mv compiler-rt-3.3.src llvm/projects/compiler-rt

cd llvm
./configure

# 4GB of system RAM cannot support over 4 threads.
# Crashes in the middle of process.
# If you have enough system resources, building 
# would not take that much longer...
make -j4 install







# Build libc++ using Clang and libstdc++
# --------------------------------------
cd ~/t1/libcxx-3.3.src/lib
./buildit
cp libc++.so.1.0 $SYSLIBPATH
cd $SYSLIBPATH
ln -sf libc++.so.1 libc++.so
ln -sf libc++.so.1.0 libc++.so.1

# Let system to rescan shared libraries. Linux requires this procedure.
ldconfig






# Re-build Clang using Clang and libc++
# -------------------------------------
cd ~/t1/llvm
make clean
make -j4 install



# Re-build libc++ using Clang and libc++
# --------------------------------------







# Test Clang.
# -----------
cd ~/t1/llvm/tools/clang/test
make 


# Test libc++.
# -----------
cd ~/t1/libcxx-3.3.src/test
./testit