AC_INIT(configuration.ml.in)

PACKAGE=helm_gtk_interface
MAJOR_VERSION=0
MINOR_VERSION=0
MICRO_VERSION=2
VERSION=$MAJOR_VERSION.$MINOR_VERSION.$MICRO_VERSION

if test "x$prefix" != xNONE; then
  RESOLVED_PREFIX=$prefix
else
  RESOLVED_PREFIX=$ac_default_prefix
fi

if test "x$exec_prefix" != xNONE; then
  RESOLVED_EXEC_PREFIX=$exec_prefix
else
  RESOLVED_EXEC_PREFIX=$RESOLVED_PREFIX
fi

dnl The following is the directory where the binary will be installed
BIN_DIR=$RESOLVED_EXEC_PREFIX/bin

dnl MISSING CHECKS:
dnl ocaml, ocaml-findlib, ocaml-netstring, ocaml-pxp, lablgtk_20001129
dnl lablgtk-20001129_gtkmathview

dnl Check for Ocaml
AC_CHECK_PROG(HAVE_OCAMLC, ocamlc, yes, no)
if test $HAVE_OCAMLC = "no"; then
  AC_MSG_ERROR(could not find ocamlc in PATH, please make sure ocaml is installed)
fi

dnl Check for the Ocaml library dir
AC_MSG_CHECKING("for the ocaml library dir")
OCAML_ROOT=`ocamlc -v | grep "^Standard" | sed 's/^.*: *//'`
AC_MSG_RESULT($OCAML_ROOT)

dnl Check for mlminidom
AC_CHECK_FILE($OCAML_ROOT/mlminidom/minidom.mli,
  RES="yes"
  MLMINIDOM_LIB_DIR=$OCAML_ROOT/mlminidom,
  RES="no"
)

if test $RES = "no"; then
  echo
  echo "It seems that mlminidom isn't installed in the default directory"
  echo "$OCAML_ROOT/mlminidom. Where can I find it?"
  echo
  AC_CACHE_VAL(mmlinterface_cv_MLMINIDOM_LIB_DIR,
    read mmlinterface_cv_MLMINIDOM_LIB_DIR
  )
  MLMINIDOM_LIB_DIR=$mmlinterface_cv_MLMINIDOM_LIB_DIR
fi

dnl Check for lablgtk
AC_CHECK_FILE($OCAML_ROOT/lablgtk/gtk.ml,
  RES="yes"
  LABLGTK_LIB_DIR=$OCAML_ROOT/lablgtk,
  RES="no"
)

if test $RES = "no"; then
  echo
  echo "It seems that lablgtk isn't installed in the default directory"
  echo "$OCAML_ROOT/lablgtk. Where can I find it?"
  echo
  AC_CACHE_VAL(mmlinterface_cv_LABLGTK_LIB_DIR,
    read mmlinterface_cv_LABLGTK_LIB_DIR
  )
  LABLGTK_LIB_DIR=$mmlinterface_cv_LABLGTK_LIB_DIR
fi

dnl Check for lablgtkmathview
AC_CHECK_FILE($OCAML_ROOT/lablgtkmathview/gtkMathView.ml,
  RES="yes"
  LABLGTKMATHVIEW_LIB_DIR=$OCAML_ROOT/lablgtkmathview,
  RES="no"
)

if test $RES = "no"; then
  echo
  echo "It seems that lablgtkmathview isn't installed in the default directory"
  echo "$OCAML_ROOT/lablgtkmathview. Where can I find it?"
  echo
  AC_CACHE_VAL(mmlinterface_cv_LABLGTKMATHVIEW_LIB_DIR,
    read mmlinterface_cv_LABLGTKMATHVIEW_LIB_DIR
  )
  LABLGTKMATHVIEW_LIB_DIR=$mmlinterface_cv_LABLGTKMATHVIEW_LIB_DIR
fi

dnl Check for HELM
AC_CHECK_PROG(HAVE_HELM_CONFIG, helm-config, yes, no)
if test $HAVE_HELM_CONFIG = "no"; then
  AC_MSG_ERROR(Could not find helm-config)
fi

HELM_DEFAULT_CONFIGURATION_DIR=`helm-config --etc-dir`

AC_SUBST(PACKAGE)
AC_SUBST(VERSION)
AC_SUBST(OCAML_ROOT)
AC_SUBST(MLMINIDOM_LIB_DIR)
AC_SUBST(LABLGTK_LIB_DIR)
AC_SUBST(LABLGTKMATHVIEW_LIB_DIR)
AC_SUBST(BIN_DIR)
AC_SUBST(HELM_DEFAULT_CONFIGURATION_DIR)
AC_SUBST(PERL_BINARY)

AC_OUTPUT([
  Makefile
  configuration.ml
  helm_wget
  helm_gtk_interface.spec
],
  chmod +x helm_wget
)