#
# autoconf input for Objective Caml programs
# Copyright (C) 2001 Jean-Christophe Filliâtre
#   from a first script by Georges Mariano
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Library General Public
# License version 2, as published by the Free Software Foundation.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
#
# See the GNU Library General Public License version 2 for more details
# (enclosed in the file LGPL).

# modified by Kim Nguyẽn

# the script generated by autoconf from this input will set the following
# variables:
#   OCAMLC        "ocamlc" if present in the path, or a failure
#                 or "ocamlc.opt" if present with same version number as ocamlc
#   OCAMLOPT      "ocamlopt" (or "ocamlopt.opt" if present), or "no"
#   OCAMLBEST     either "byte" if no native compiler was found,
#                 or "opt" otherwise
#   OCAMLDEP      "ocamldep"
#   OCAMLLEX      "ocamllex" (or "ocamllex.opt" if present)
#   OCAMLYACC     "ocamlyac"
#   OCAMLLIB      the path to the ocaml standard library
#   OCAMLVERSION  the ocaml version number
#   OCAMLWEB      "ocamlweb" (not mandatory)
#   OCAMLWIN32    "yes"/"no" depending on Sys.os_type = "Win32"
#   EXE           ".exe" if OCAMLWIN32=yes, "" otherwise

# check for one particular file of the sources
# ADAPT THE FOLLOWING LINE TO YOUR SOURCES!
AC_INIT([tatoo], [0.0.1], [kim.nguyen@lri.fr])

# Check for Ocaml compilers

AC_CHECK_PROG(HAS_OCAMLFIND,ocamlfind,yes,no)
if test "$HAS_OCAMLFIND" = "no"  ; then
	AC_MSG_ERROR(Cannot find ocamlfind.)
else
   OCAMLFIND=ocamlfind
fi

# we first look for ocamlc in the path; if not present, we fail
OCAMLC="$OCAMLFIND ocamlc"
AC_MSG_CHECKING(ocamlc)
$OCAMLC
if test  ! $? ;  then
        AC_MSG_RESULT(not found)
    	AC_MSG_ERROR(Cannot find ocamlc.)
else
        AC_MSG_RESULT($OCAMLC)
fi
OCAMLOPT="$OCAMLFIND ocamlopt"
AC_MSG_CHECKING(ocamlopt)
$OCAMLOPT

if test ! $?;  then
        AC_MSG_RESULT(not found)
    	AC_MSG_ERROR(Cannot find ocamlopt.)
else
        AC_MSG_RESULT($OCAMLOPT)
fi

# we extract Ocaml version number and library path
OCAMLVERSION=$($OCAMLC -version)
echo "ocaml version is $OCAMLVERSION"
OCAMLLIB=$($OCAMLC -where)
echo "ocaml library path is $OCAMLLIB"

# ocamldep, ocamllex and ocamlyacc should also be present in the path
OCAMLOPT="ocamlfind ocamldep"
AC_MSG_CHECKING(ocamldep)
$OCAMLDEP
if test ! $?;  then
        AC_MSG_RESULT(not found)
    	AC_MSG_ERROR(Cannot find ocamldep.)
else
        AC_MSG_RESULT($OCAMLDEP)
fi

AC_CHECK_PROG(OCAMLYACC,ocamlyacc, yes ,no)
if test "$OCAMLYACC" = "no" ; then
	AC_MSG_ERROR(Cannot find ocamlyacc.)
fi

AC_CHECK_PROG(CAMLP4,camlp4, yes,no)
if test "$CAMLP4" = "no" ; then
	AC_MSG_ERROR(Cannot find camlp4.)
fi

AC_MSG_CHECKING(for ulex)
ULEX_PATH=$($OCAMLFIND query ulex 2>/dev/null)
if test -z "$ULEX_PATH"; then
        AC_MSG_RESULT(no)
    	AC_MSG_ERROR(Cannot find ulex.)
else
        AC_MSG_RESULT(yes)
fi

AC_MSG_CHECKING(for expat)
EXPAT_PATH=$($OCAMLFIND query expat 2>/dev/null)
if test -z "$EXPAT_PATH"; then
        AC_MSG_RESULT(no)
    	AC_MSG_ERROR(Cannot find expat.)
else
        AC_MSG_RESULT(yes)
fi

# substitutions to perform

AC_SUBST(OCAMLFIND)
AC_SUBST(OCAMLC)
AC_SUBST(OCAMLOPT)
AC_SUBST(OCAMLDEP)
AC_SUBST(OCAMLYACC)
AC_SUBST(CAMLP4)