Building Julia with CXX

Ensure gcc, g++ are version 4.8 at least (on Ubuntu to set gcc with update-alternatives after installing it)
- Note that using GCC 4.9.* less than 4.9.2 will result in the LLVM compilation problem described at http://comments.gmane.org/gmane.comp.compilers.llvm.cvs/193406
Ensure you have the ubuntu package libedit-dev
Ensure gfortran is installed with correct symlinks (http://stackoverflow.com/questions/6302209/building-r-package-getting-error-ld-cannot-find-lgfortran see second answer)
Download Julia 0.4 nightly from source
Add appropriate Make.user file to top level of Julia source tree:

LLVM_ASSERTIONS=1
LLVM_VER=svn
BUILD_LLVM_CLANG=1
BUILD_LLDB=1
LLDB_VER=master
USE_LLVM_SHLIB=1
LLDB_DISABLE_PYTHON=1

make (it will fail)
- one can also do make julia-debug
patch llvm-svn http://reviews.llvm.org/D5431 by hand (patch doesn't apply automatically):
- add -lpthread to the end of LLVMLibsOptions inside deps/llvm-svn/tools/lldb/lib/Makefile
make (it may fail: if so, make clean (?make cleanall?) and make again -- will take much less time)
Pkg.clone("https://github.com/Keno/Cxx.jl", "Cxx")
add LLDB_LIBS += -llldb -llldbHostPosix to ~/.julia/v0.4/Cxx/deps/BuildBootstrap.Makefile
Pkg.build("Cxx")
using Cxx

Provide feedback