#!/bin/bash
#
set -e

commit=53f39c11b58d

cd "$(dirname "$0")/.."

if ! [ -e src/parser/cvc/Cvc.g ]; then
  echo "$(basename $0): I expect to be in the contrib/ of a CVC4 source tree," >&2
  echo "but apparently:" >&2
  echo >&2
  echo "  $(pwd)" >&2
  echo >&2
  echo "is not a CVC4 source tree ?!" >&2
  exit 1
fi

function webget {
  if which wget &>/dev/null; then
    wget -c -O "$2" "$1"
  elif which curl &>/dev/null; then
    curl "$1" >"$2"
  else
    echo "Can't figure out how to download from web.  Please install wget or curl." >&2
    exit 1
  fi
}

if [ -e abc ]; then
  echo 'error: file or directory "abc" exists; please move it out of the way.' >&2
  exit 1
fi

mkdir abc
cd abc
webget https://bitbucket.org/alanmi/abc/get/$commit.tar.gz abc-$commit.tar.gz
gunzip -f abc-$commit.tar.gz
tar xfv abc-$commit.tar
cd alanmi-abc-$commit

# Strip out libSupport.c, it is in charge of loading extensions and we
# don't want different behavior based on ABC_LIB_PATH, or based on what
# .so is in the current directory!
cp src/base/main/module.make src/base/main/module.make.orig
grep -v 'libSupport\.c' src/base/main/module.make.orig > src/base/main/module.make
cp src/base/main/mainInit.c src/base/main/mainInit.c.orig
sed 's,\( *\)\(.*Libs_Init(\),\1//\2,;s,\( *\)\(.*Libs_End(\),\1//\2,' src/base/main/mainInit.c.orig > src/base/main/mainInit.c

# Build optimized, without readline, without pthreads.
# These aren't necessary for our usage and we don't want the dependencies.
make libabc.a OPTFLAGS=-O ABC_USE_NO_READLINE=1 ABC_USE_NO_PTHREADS=1
mv libabc.a libabc-static.a
make clean
make libabc.a OPTFLAGS='-O -fPIC' ABC_USE_NO_READLINE=1 ABC_USE_NO_PTHREADS=1

echo
echo ===================== Now configure CVC4 with =====================
echo ./configure --with-abc --with-abc-dir=`pwd`