Extract grcov download script

scripts/fetch-grcov.sh

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+set -e
+
+if [[ ! -x ./grcov ]]; then
+  uname=$(uname | tr '[:upper:]' '[:lower:]')
+  if [[ $uname = darwin ]]; then
+    uname="osx"
+  fi
+  uname_m=$(uname -m | tr '[:upper:]' '[:lower:]')
+  name=grcov-${uname}-${uname_m}.tar.bz2
+
+  wget "https://github.com/mozilla/grcov/releases/download/v0.3.2/$name"
+  tar xjf "$name"
+fi
+
+ls -lh grcov