AC_INIT(heptagon,1.0)

AC_PROG_INSTALL

AC_ARG_ENABLE(simulator,
    [  --enable-simulator      enable the graphical simulator],,
    enable_simulator=no)

AC_ARG_ENABLE(local_stdlib,
    [  --enable-local-stdlib   use the in-sources standard library],,
    enable_local_stdlib=no)

AC_PROG_OCAML
if test "$OCAMLC" = "no"; then
  AC_MSG_ERROR([Please install the OCaml compiler])
fi

case "$OCAMLVERSION" in
  0.*|1.*|2.*|3.0*)
     AC_MSG_ERROR(You need Objective Caml 3.10 or higher);;
esac

AC_PROG_FINDLIB
if test "$OCAMLFIND" = "no"; then
  AC_MSG_ERROR([Please install OCaml findlib (the ocamlfind command)])
fi

OCAMLC_STDLIB=`$OCAMLFIND ocamlc -where`
OCAMLFIND_STDLIB=`$OCAMLFIND printconf stdlib`
if test "$OCAMLC_STDLIB" != "$OCAMLFIND_STDLIB"; then
  AC_MSG_ERROR([OCaml and OCamlfind make different assumptions about the standard library directory])
fi

AC_CHECK_PROG(MENHIR,menhir,menhir,no)
if test "$MENHIR" = no ; then
    AC_MSG_ERROR(Please install menhir.)
fi

AC_CHECK_OCAML_PKG([menhirLib])
 if test "$OCAML_PKG_menhirLib" = "no"; then
   AC_MSG_ERROR([Please install menhirLib package.])
 fi

AC_CHECK_OCAML_PKG([ocamlgraph])
 if test "$OCAML_PKG_ocamlgraph" = "no"; then
   AC_MSG_ERROR([Please install ocamlgraph package.])
 fi

AC_CHECK_OCAML_PKG([lablgtk2])
 if test "$OCAML_PKG_lablgtk2" = "no"; then
    enable_simulator=no
    AC_MSG_WARN([Could not find 'lablgtk2'. The simulator will not be built])
 fi

if test "$enable_local_stdlib" = "yes"; then
    stdlib_dir=$PWD/lib
else
    stdlib_dir=$libdir/heptagon
fi


AC_SUBST(INSTALL)
AC_SUBST(stdlib_dir)

AC_SUBST(enable_simulator)

AC_OUTPUT(config)