build-gnur.sh

#!/bin/bash

set -Eeuo pipefail

SCRIPT_DIR=$(cd "$(dirname "$0")" && pwd)
BASE_DIR=$(cd "$SCRIPT_DIR/.." && pwd)
R_DIR=""

if [ ! -d "$BASE_DIR" ]; then
  echo "Could not determine absolute dir of $0"
  echo "Maybe accessed with symlink"
  exit 1
fi

function usage() {
  echo "$0 [-d] <R sources path>"
}

while [[ $# -gt 0 ]]; do
  case $1 in
  -d | --debug)
    export CFLAGS="-ggdb3 -O0"
    export CXXFLAGS="-ggdb3 -O0"
    export CPPFLAGS="-ggdb3 -O0"
    echo "Building a debug version of R"
    shift
    ;;
  -*)
    echo "Unknown option $1"
    exit 1
    ;;
  *)
    if [[ -z "$R_DIR" ]]; then
      R_DIR="$1"
      shift
    else
      echo "Unknown options $*"
      exit 1
    fi
    ;;
  esac
done

if [[ -z "$R_DIR" ]]; then
  usage
  exit 1
fi

echo "Building in $R_DIR"

if [[ "$OSTYPE" == "darwin"* ]]; then
  USING_OSX=1
else
  USING_OSX=0
fi

if [[ ! -f ${R_DIR}/.git ]]; then
  echo "-> update submodules"
  git submodule update --init
fi

function build {
  cd "$R_DIR"

  if [[ $(git diff --shortstat 2>/dev/null | tail -n1) != "" ]]; then
    echo "** warning: $R_DIR repo is dirty"
    sleep 1
  fi

  tools/rsync-recommended

  if [[ ! -f Makefile ]]; then
    echo "-> configure"
    if [ $USING_OSX -eq 1 ]; then
      ./configure --enable-R-shlib --with-internal-tzcode --with-ICU=no --with-x=no || cat config.log
    else
      ./configure
    fi
  fi

  if [ ! -f doc/FAQ ]; then
    touch doc/FAQ
  fi

  if [ ! -f "$R_DIR/SVN-REVISION" ]; then
    # R must either be built from a svn checkout, or from the tarball generated by make dist
    # this is a workaround to build it from a git mirror
    # see https://github.com/wch/r-source/wiki/Home/6d35777dcb772f86371bf221c194ca0aa7874016#building-r-from-source
    echo -n 'Revision: ' >SVN-REVISION
    # get the latest revision that is not a rir patch
    REV=$(git log --grep "git-svn-id" -1 --format=%B | grep "^git-svn-id" | sed -E 's/^git-svn-id: https:\/\/svn.r-project.org\/R\/[^@]*@([0-9]+).*$/\1/')
    # can fail on shallow checkouts, so let's put the last known there
    if [ "$REV" == "" ]; then
      REV='74948'
    fi
    echo "$REV" >>SVN-REVISION
    echo -n 'Last Changed Date: ' >>SVN-REVISION
    REV_DATE=$(git log --grep "git-svn-id" -1 --pretty=format:"%ad" --date=iso | cut -d' ' -f1)
    # can fail on shallow checkouts, so let's put the last known there
    if [ "$REV_DATE" == "" ]; then
      REV_DATE='2018-07-02'
    fi
    echo "$REV_DATE" >>SVN-REVISION

    rm -f non-tarball
  fi

  echo "-> make"
  make -j8
}

build