compile

#!/usr/bin/env bash
# The actual compilation code lives in `bin/support/ruby_compile`. This file instead
# bootstraps the ruby needed and then executes `bin/support/ruby_compile`

BUILD_DIR=$1
CACHE_DIR=$2
ENV_DIR=$3
BIN_DIR=$(cd "$(dirname "$0")" || exit; pwd) # absolute path
BUILDPACK_DIR=$(dirname "$BIN_DIR")

# shellcheck source=bin/support/bash_functions.sh
source "$BIN_DIR/support/bash_functions.sh"

bootstrap_ruby_dir=$(install_bootstrap_ruby "$BIN_DIR" "$BUILDPACK_DIR")
export PATH="$bootstrap_ruby_dir/bin/:$PATH"
unset GEM_PATH

if detect_needs_java "$BUILD_DIR"; then
  cat <<EOM

       ## Warning: Your app needs java

       The Ruby buildpack determined your app needs java installed
       we recommend you add the jvm buildpack to your application:

         $ heroku buildpacks:add heroku/jvm --index=1

-----> Installing Java

EOM

  compile_buildpack_v2 "$BUILD_DIR" "$CACHE_DIR" "$ENV_DIR" "https://buildpack-registry.s3.us-east-1.amazonaws.com/buildpacks/heroku/jvm.tgz" "heroku/jvm"
fi

"$bootstrap_ruby_dir"/bin/ruby "$BIN_DIR/support/ruby_compile" "$@"