* Enabling auto-completion for chameleon in spacemacs
** Install clang compiler on the system
#+begin_src sh :results output :exports both
sudo aptitude install clang
#+end_src
** Installing cc_args.py
We assume ~/bin/ is in the PATH environment variable
#+begin_src sh :results output :exports both
cd ~/bin/
wget https://raw.githubusercontent.com/Rip-Rip/clang_complete/master/bin/cc_args.py
chmod +x cc_args.py
#+end_src
** Enabling c-c++ layer in spacemacs
Enable [[https://github.com/syl20bnr/spacemacs/tree/master/layers/%2Blang/c-c%2B%2B][c-c++ spacemacs layer]] with clang support:
#+begin_src emacs-lisp
(setq-default dotspacemacs-configuration-layers
  '((c-c++ :variables c-c++-enable-clang-support t)))
#+end_src
** Installing Chameleon
#+begin_src sh :results output :exports both
export CHAMELEON_DIR=/path/to/chameleon-src/
spack install -v chameleon~simu@src ^mkl
#+end_src
** Loading modules
#+begin_src sh :results output :exports both
module purge
spack load chameleon ; spack load cmake ; spack load fxt ; spack load openmpi ; spack load hwloc ; spack load starpu
#+end_src
** Building chameleon with cc_args.py
#+begin_src sh :results output :exports both
cd $CHAMELEON_DIR
mkdir spack-cc_args-build
cd spack-cc_args-build
CC='cc_args.py gcc' cmake ..
make
#+end_src
** Gathering the clang_complete information to the src directory
We now gather, sort and unify the .clang_complete information we obtained from
the build to the src directory:
#+begin_src sh :results output :exports both
find . | grep clang_complete | xargs cat | sort | uniq > ../clang_complete
#+end_src
** Restart spacemacs (optional)
M-m q r: restart both emacs and the server, prompting to save any changed buffers
** Check company state
M-m h d v: company-clang-arguments
** Enjoy
* Sources
** Beautiful spacemacs tutorial on advanced c/c++ usage
 https://www.youtube.com/watch?v=OjbkCEkboA8
 (starting ~40')
** .clang_complete
 https://github.com/Rip-Rip/clang_complete
** cc_args.py
https://github.com/Rip-Rip/clang_complete/blob/master/bin/cc_args.py


