bin/source-erlang.sh

#!/usr/bin/env bash

# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
#   Unless required by applicable law or agreed to in writing,
#   software distributed under the License is distributed on an
#   "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
#   KIND, either express or implied.  See the License for the
#   specific language governing permissions and limitations
#   under the License.

# Build Erlang from source on systems where desired package
# versions are not available
#
# While these scripts are primarily written to support building CI
# Docker images, they can be used on any workstation to install a
# suitable build environment.

# stop on error
set -e

# Check if running as root
if [[ ${EUID} -ne 0 ]]; then
  echo "Sorry, this script must be run as root."
  echo "Try: sudo $0 $*"
  exit 1
fi

SCRIPTPATH="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

. ${SCRIPTPATH}/detect-os.sh

redhats='(rhel|centos|fedora)'
debians='(debian|ubuntu)'
latest='(stretch|buster|bionic)'

echo "Erlang source build started @ $(date)"

# Install per-distro dependencies according to:
#  http://docs.basho.com/riak/1.3.0/tutorials/installation/Installing-Erlang/
# NB: Dropping suggested superfluous packages; fop and unixodbc-dev
if [[ ${ID} =~ ${redhats} ]]; then
    yum install -y git gcc glibc-devel make ncurses-devel openssl-devel autoconf procps
elif [[ ${ID} =~ ${debians} ]]; then
    if [[ ${ERLANGVERSION%%.*} -le 19 ]] && [[ ${VERSION_CODENAME} =~ ${latest} ]] && [ ${ERLANGVERSION} != "all" ]; then
	echo "Recent versions of Linux (Stretch, Bionic, etc) provide a version of libssl"
	echo "which is too new to complile earlier (<=19) versions of Erlang.  Please"
	echo "either choose an earlier distro release or a more rencent version of Erlang."
	exit 1
    fi

    apt-get update
    apt-get install -y git build-essential autoconf libncurses5-dev openssl libssl-dev xsltproc procps
else
  echo "Sorry, we don't support this Linux (${ID}) yet."
  exit 1
fi

if [ "${ERLANGVERSION}" = "all" ]
then
  # Install using kerl
  KERL="/usr/local/bin/kerl"
  wget --directory-prefix=/usr/local/bin https://raw.githubusercontent.com/kerl/kerl/master/kerl
  chmod a+x ${KERL}
  cat << EOF > ~/kerlrc
export KERL_BUILD_BACKEND=git
unset KERL_BUILD_DOCS
unset KERL_INSTALL_MANPAGES
unset KERL_INSTALL_HTMLDOCS
export KERL_CONFIGURE_OPTIONS="--without-javac --without-wx --without-odbc --without-debugger --without-observer --without-et  --without-cosEvent --without-cosEventDomain --without-cosFileTransfer --without-cosNotification --without-cosProperty --without-cosTime --without-cosTransactions --without-orber"
EOF
  echo "export KERL_BUILD_BACKEND=git" > ~/.kerlrc
  mkdir -p /usr/local/kerl
  KERLVERSIONS=$(echo ${KERLVERSIONS} | tr ',' ' ')
  echo "Installing these Erlang versions using kerl: ${KERLVERSIONS}"
  ${KERL} update releases >/dev/null
  for ver in ${KERLVERSIONS}
  do
    ${KERL} build ${ver} ${ver}
    ${KERL} install ${ver} /usr/local/kerl/${ver}
    ${KERL} delete build ${ver}
  done
  ${KERL} list installations
  rm -rf ~/.kerl/archives/*
else
  # Build from source tarball
  # Pull down and checkout the requested Erlang version
  git clone https://github.com/erlang/otp.git
  cd otp
  git checkout OTP-${ERLANGVERSION} -b local-OTP-${ERLANGVERSION}

  # Configure Erlang - skip building things we don't want or need
  ./otp_build autoconf

  ./otp_build configure --without-javac --without-wx --without-odbc \
    --without-debugger --without-observer --without-et  --without-cosEvent \
    --without-cosEventDomain --without-cosFileTransfer \
    --without-cosNotification --without-cosProperty --without-cosTime \
    --without-cosTransactions --without-orber

  make -j $(nproc)
  make install
  cd -
  rm -rf otp
fi

if [[ ${ID} =~ ${redhats} ]]; then
    yum clean all
elif [[ ${ID} =~ ${debians} ]]; then
    apt-get clean
fi

echo "Erlang source build finished @ $(date)"