1 files changed, 46 insertions, 0 deletions
diff --git a/.circleci/prepare-system.sh b/.circleci/prepare-system.sh
new file mode 100755
index 0000000000..5d4d630bcb
--- /dev/null
+++ b/.circleci/prepare-system.sh
@@ -0,0 +1,46 @@
+#!/usr/bin/env bash
+# vim: sw=2 et
+set -euo pipefail
+
+fail() {
+  echo "ERROR: $*" >&2
+  exit 1
+}
+
+case "$(uname)" in
+  Linux)
+    if [[ -n ${TARGET:-} ]]; then
+      if [[ $TARGET = FreeBSD ]]; then
+        # cross-compiling to FreeBSD
+        add-apt-repository -y ppa:hvr/ghc
+        apt-get update -qq
+        apt-get install -qy ghc-8.0.2 cabal-install  alex happy ncurses-dev git openssh-client make automake autoconf gcc perl python3 texinfo xz-utils
+        cabal update
+        cabal install --reinstall hscolour
+        ln -s $HOME/.cabal/bin/HsColour /usr/local/bin/HsColour
+      else
+        fail "TARGET=$target not supported"
+      fi
+    else
+      # assuming Ubuntu
+      apt-get update -qq
+      apt-get install -qy git openssh-client make automake autoconf gcc perl python3 texinfo xz-utils
+      cabal update
+      cabal install --reinstall hscolour
+    fi
+    ;;
+  Darwin)
+    if [[ -n ${TARGET:-} ]]; then
+      fail "uname=$(uname) not supported for cross-compilation"
+    fi
+    brew install ghc cabal-install python3 ncurses
+    cabal update
+    cabal install --reinstall alex happy haddock hscolour
+    # put them on the $PATH, don't fail if already installed
+    ln -s $HOME/.cabal/bin/alex /usr/local/bin/alex || true
+    ln -s $HOME/.cabal/bin/happy /usr/local/bin/happy || true
+    ln -s $HOME/.cabal/bin/hscolour /usr/local/bin/hscolour || true
+    ;;
+  *)
+    fail "uname=$(uname) not supported"
+esac