dnl Copyright (C) 2007-2013  CEA/DEN, EDF R&D, OPEN CASCADE
dnl
dnl Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
dnl CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
dnl
dnl This library is free software; you can redistribute it and/or
dnl modify it under the terms of the GNU Lesser General Public
dnl License as published by the Free Software Foundation; either
dnl version 2.1 of the License.
dnl
dnl This library is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
dnl Lesser General Public License for more details.
dnl
dnl You should have received a copy of the GNU Lesser General Public
dnl License along with this library; if not, write to the Free Software
dnl Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
dnl
dnl See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
dnl

AC_DEFUN([CHECK_MED3],[
AC_REQUIRE([AC_PROG_CC])dnl
AC_REQUIRE([AC_PROG_CPP])dnl
AC_REQUIRE([CHECK_HDF5])dnl
#AC_REQUIRE([MED_CHECK_SIZEOF_MEDINT]) # seems not required

AC_CHECKING(for MED3)

AC_ARG_WITH(med3,
    [  --with-med3=DIR                 root directory path to med3 installation ],
    [MED3HOME="$withval"
      AC_MSG_RESULT("select $withval as path to med3")
    ])

AC_SUBST(MED3_INCLUDES)
AC_SUBST(MED3_LIBS)
AC_SUBST(MED3_LIBS_C_ONLY)
AC_SUBST(MED3_MT_LIBS)
AC_SUBST(MED_CPPFLAGS)
AC_SUBST(MED3HOME)

MED3_INCLUDES=""
MED3_LIBS=""
MED3_MT_LIBS=""
#MED_CPPFLAGS="$DEFINED_F77INT64"

med3_ok=no

LOCAL_INCLUDES="$HDF5_INCLUDES"
LOCAL_LIBS="-lmed -lmedimport $HDF5_LIBS"
LOCAL_LIBS_C_ONLY="-lmedC $HDF5_LIBS"

if test -z $MED3HOME
then
   AC_MSG_WARN(undefined MED3HOME variable which specify med3 installation directory)
   AC_PATH_PROG(MDUMP, mdump)
   if test "xMDUMP" != "x" ; then
      MED3HOME=$MDUMP
      MED3HOME=`echo ${MED3HOME} | sed -e "s,[[^/]]*$,,;s,/$,,;s,^$,.,"`
      MED3HOME=`echo ${MED3HOME} | sed -e "s,[[^/]]*$,,;s,/$,,;s,^$,.,"`
   fi
fi
if test ! -z $MED3HOME
then
   LOCAL_INCLUDES="$LOCAL_INCLUDES -I$MED3HOME/include"
   if test "x$MED3HOME" = "x/usr"
   then
     LOCAL_LIBS="-lmed  $LOCAL_LIBS"
     LOCAL_LIBS_C_ONLY="-lmedC $LOCAL_LIBS_C_ONLY"
   else
     LOCAL_LIBS="-L$MED3HOME/lib $LOCAL_LIBS"
     LOCAL_LIBS_C_ONLY="-L$MED3HOME/lib $LOCAL_LIBS_C_ONLY"
   fi
fi

dnl check med3 header

f77int="F77INT32"
case  $host_os in
   irix5.* | irix6.* | osf4.* | osf5.* | linux*  )

        linux64="true"
# porting on intel processor 64 bits
        expr "$host_os" : 'linux' >/dev/null && ( test ! x"$host_cpu" = x"x86_64" && test ! x"$host_cpu" = x"ia64" ) && linux64="false"
	if test ! x"$linux64" = "xfalse" ; then
	  echo "$as_me:$LINENO: checking for 64bits integers size in F77/F90" >&5
echo $ECHO_N "checking for 64bits integers size in F77/F90... $ECHO_C" >&6
	  # Check whether --enable-int64 or --disable-int64 was given.
if test "${enable_int64+set}" = set; then
  enableval="$enable_int64"

fi;
	  case "X-$enable_int64" in
	    X-no)
	     echo "$as_me:$LINENO: result: \"disabled\"" >&5
echo "${ECHO_T}\"disabled\"" >&6
	     SUFFIXES="_32"
	     ;;
	    *)
	     echo "$as_me:$LINENO: result: \"enabled\"" >&5
echo "${ECHO_T}\"enabled\"" >&6
	     SUFFIXES=""
	     f77int="F77INT64"
	     ;;
	  esac
	fi
     ;;
   *)
     ;;
esac

case $host_os in
    linux*)
        test x"$linux64" = x"true" && \
          MACHINE="PCLINUX64${SUFFIXES}" || \
	MACHINE=PCLINUX
	;;
    hpux*)
	MACHINE=HP9000
	;;
    aix4.*)
	MACHINE=RS6000
	host_os_novers=aix4.x
	;;
    irix5.*)
	MACHINE="IRIX64${SUFFIXES}"
	host_os_novers=irix5.x
	;;
    irix6.*)
	MACHINE="IRIX64${SUFFIXES}"
	host_os_novers=irix6.x
	;;
    osf4.*)
	MACHINE="OSF1${SUFFIXES}"
	host_os_novers=osf4.x
	;;
    osf5.*)
	MACHINE="OSF1${SUFFIXES}"
	 host_os_novers=osf5.x
	 ;;
    solaris2.*)
	MACHINE=SUN4SOL2
	 host_os_novers=solaris2.x
	 ;;
    uxpv*)
	MACHINE=VPP5000
	 ;;
    *)
	MACHINE=
	 host_os_novers=$host_os
	 ;;
esac

CPPFLAGS_old="$CPPFLAGS"
dnl we must test system : linux = -DPCLINUX
dnl we must test system : Alpha-OSF = -DOSF1
case $host_os in
   linux*)
      CPPFLAGS="$CPPFLAGS -D$MACHINE $LOCAL_INCLUDES"
dnl      CPPFLAGS="$CPPFLAGS -DPCLINUX $LOCAL_INCLUDES"
      ;;
   osf*)
      CPPFLAGS="$CPPFLAGS -DOSF1 $LOCAL_INCLUDES"
      ;;
esac
AC_CHECK_HEADER(med.h,med3_ok=yes ,med3_ok=no)
CPPFLAGS="$CPPFLAGS_old"

if  test "x$med3_ok" = "xyes"
then

dnl check med3 library

  LIBS_old="$LIBS"
  # $LOCAL_LIBS_C_ONLY is added to next line because on Fedora, check error :
  #/usr/bin/ld: /tmp/ccQHybYu.o: undefined reference to symbol 'MEDfileOpen'                                                     
  #/usr/bin/ld: note: 'MEDfileOpen' is defined in DSO /data/tmplgls/salome/prerequis/install/FD18_64/med-dev/FROM_hdf5-1.8.10/lib/libmedC.so so try adding it to the linker command line
  # See http://comments.gmane.org/gmane.linux.redhat.fedora.devel/160632
  LIBS="$LIBS $LOCAL_LIBS $LOCAL_LIBS_C_ONLY"
  AC_CHECK_LIB(med,MEDfileOpen,med3_ok=yes,med3_ok=no)

  if  test "x$med3_ok" = "xyes"
  then
   AC_CHECK_LIB(medimport,HAVE_MEDimport,med3_ok=yes,med3_ok=no)
  fi
  LIBS="$LIBS_old"
 
fi

if  test "x$med3_ok" = "xyes"
then
case $host_os in
   linux*)
      MED3_INCLUDES="-D$MACHINE $LOCAL_INCLUDES"
dnl      MED3_INCLUDES="-DPCLINUX $LOCAL_INCLUDES"
      ;;
   osf*)
      MED3_INCLUDES="-DOSF1 $LOCAL_INCLUDES"
      ;;
esac
  MED3_LIBS="$LOCAL_LIBS"
  MED3_LIBS_C_ONLY="$LOCAL_LIBS_C_ONLY"
  MED3_MT_LIBS="$LOCAL_LIBS"
fi


AC_MSG_RESULT(for med3: $med3_ok)

])dnl