#!/bin/sh

cildistrib=cil-1.3.5.tar.gz
prefix=/usr/local
bindir='$(PREFIX)/bin'
libdir='$(PREFIX)/lib/compcert'

# Parse command-line arguments

while : ; do
  case "$1" in
    "") break;;
    -prefix|--prefix)
        prefix=$2; shift;;
    -bindir|--bindir)
        bindir=$2; shift;;
    -libdir|--libdir)
        libdir=$2; shift;;
    *) echo "Unknown option \"$1\"." 1>&2; exit 2;;
  esac
  shift
done

# Generate Makefile.config

rm -f Makefile.config
cat > Makefile.config <<EOF
PREFIX=$prefix
BINDIR=$bindir
LIBDIR=$libdir
EOF

# Extract and configure Cil

set -e
tar xzf $cildistrib
for i in cil.patch/*; do patch -p1 < $i; done
(cd cil && ./configure)

# Extract 'ARCHOS' info from Cil configuration

grep '^ARCHOS=' cil/config.log >> Makefile.config