#!/bin/bash -xue

PATH=~/ocaml/bin:$PATH; export PATH

TARGET="$1"; shift

case "$TARGET" in
  prepare)
    if [ ! -e ~/ocaml/cached-version -o "$(cat ~/ocaml/cached-version)" != "$OCAML_VERSION.$OCAML_RELEASE" ] ; then
      rm -rf ~/ocaml
      mkdir -p ~/ocaml/src
      cd ~/ocaml/src
      wget http://caml.inria.fr/pub/distrib/ocaml-$OCAML_VERSION/ocaml-$OCAML_VERSION.$OCAML_RELEASE.tar.gz
      tar -xzf ocaml-$OCAML_VERSION.$OCAML_RELEASE.tar.gz
      cd ocaml-$OCAML_VERSION.$OCAML_RELEASE
      ./configure -prefix ~/ocaml
      make world.opt
      make install
      cd ..
      rm -rf src
      echo "$OCAML_VERSION.$OCAML_RELEASE" > ~/ocaml/cached-version
    fi
  ;;
  build)
    ocaml bootstrap.ml
    ./boot.exe --subst
    ./boot.exe --dev
  ;;
  *)
    echo "bad command $TARGET">&2; exit 1
esac