[cling][llvm][clang][bash] building cling on ubuntu 12.04 amd64

cling-build.sh

#!/bin/bash
# build cling on ubuntu 12.04
# dependencies see: http://llvm.org/docs/GettingStarted.html#requirements
sudo apt-get install libtool dejagnu subversion python-all-dev expect texinfo \
  perl autoconf automake make gcc g++ libstdc++6-4.6-dev libffi-dev \
  bzip2 gzip tar sed grep binutils coreutils findutils zip unzip \
  doxygen cmake ruby

export LANG=C # very important: build cling used svn "English" message output
ROOT=$HOME/exp/cling
PREFIX=$ROOT/usr
#GCCVER=4.6.3
#GCCARCH=x86_64-linux-gnu
GCCVER=$(ruby -e 'puts IO.popen("gcc --version").readlines[0].split[-1]')
GCCARCH=$(ruby -e 'puts IO.popen("gcc -v 2>&1").readlines[3].split[1]')
GCCINCS=(
/usr/include
/usr/include/$GCCARCH
/usr/include/c++/$GCCVER
/usr/include/c++/$GCCVER/$GCCARCH
#/usr/lib/gcc/$GCCARCH/$GCCVER/include
)

mkdir -p $ROOT
cd $ROOT
svn co -q http://llvm.org/svn/llvm-project/llvm/trunk llvm
cd llvm/tools
svn co -q http://llvm.org/svn/llvm-project/cfe/trunk clang
svn co -q https://root.cern.ch/svn/root/trunk/cint/cling
cd $ROOT/llvm/tools/clang/tools
svn co -q http://llvm.org/svn/llvm-project/clang-tools-extra/trunk extra
cd $ROOT/llvm/projects
svn co -q http://llvm.org/svn/llvm-project/compiler-rt/trunk compiler-rt
cd $ROOT/llvm
cat tools/cling/patches/*.diff | patch -p0

cd $ROOT
mkdir build
cd build
../llvm/configure --prefix=$PREFIX --enable-optimized --enable-targets=all \
  --enable-shared --enable-bindings --enable-libffi  \
  --with-c-include-dirs=$(IFS=":"; echo "${GCCINCS[*]}")

make -j2 LDFLAGS="-LRelease+Asserts/lib -lLLVM-3.2svn"
make -j2 LDFLAGS="-LRelease+Asserts/lib -lLLVM-3.2svn"
make install

use it with bash not sh

I got a 404 for svn co -q https://root.cern.ch/svn/root/trunk/cint/cling.

I used git clone http://root.cern.ch/git/cling.git from the official instructions and it worked fine from there.

Matt, I think the issue is that the cint directory has been replaced by interpreter so now its:

https://root.cern.ch/svn/root/trunk/interpreter/cling/

The easiest way to do the install now (if it works) seems to be to download the binaries and copy them to your directory structure. I did this with Linux Mint 15 (Ubuntu 13.04 with a traditional (proper :)) desktop).

Simply download the 12.04 binaries from here.

What about this tidbit in the cling instructions, "Check out the cling-compatible revision of clang and llvm, which can be found here"? Currently, this is supposed to be llvm r179269, but I'm not sure if I checked that revision out correctly (or how I can get it to check out the corresponding clang) because the patch step is failing :(. Sorry if this doesn't make sense, someone is talking into my ear (and not helping).