dnl Copyright (C) 2005-2006 EDF
dnl
dnl This file is part of the FVM software package.  For license
dnl information, see the COPYING file in the top level directory of the
dnl FVM source distribution.

# FVM_AC_TEST_HDF5
#----------------
# modifies or sets have_hdf5, HDF_CPPFLAGS, HDF_LDFLAGS, and HDF_LIBS
# depending on libraries found

AC_DEFUN([FVM_AC_TEST_HDF5], [

AC_REQUIRE([FVM_AC_CONFIG_PUBL_INIT])dnl

have_hdf5=no

AC_ARG_ENABLE(HDF5,
  [  --disable-hdf5          Do not use HDF5 when available],
  [
    case "${enableval}" in
      yes) hdf5=true ;;
      no)  hdf5=false ;;
      *)   AC_MSG_ERROR([bad value ${enableval} for --enable-hdf5]) ;;
    esac
  ],
  [hdf5=true ]
)

AC_ARG_WITH(hdf5-prefix,
  [  --with-hdf5-prefix=DIR   HDF5 format support],[
])

if test "x$hdf5" = "xtrue" ; then

  saved_CPPFLAGS="$CPPFLAGS"
  saved_LDFLAGS="$LDFLAGS"
  saved_LIBS="$LIBS"

  if test "x$with_hdf5_prefix" != "x" ; then
    HDF5_CPPFLAGS="-I$with_hdf5_prefix/include"
    HDF5_LDFLAGS="-L$with_hdf5_prefix/lib"
  fi
  HDF5_LIBS="-lhdf5"
  
  CPPFLAGS="${CPPFLAGS} ${HDF5_CPPFLAGS}"
  LDFLAGS="${LDFLAGS} ${HDF5_LDFLAGS}"
  LIBS="${LIBS} ${HDF5_LIBS}"

  AC_CHECK_LIB(hdf5, H5Fopen, 
               [ AC_DEFINE([HAVE_HDF5], 1, [HDF5 file support])
                 have_hdf5=yes
               ], 
               [ AC_MSG_WARN([no HDF5 file support])
               ],
               )

  if test "x$have_hdf5" = "xno"; then
    HDF5_CPPFLAGS=""
    HDF5_LDFLAGS=""
    HDF5_LIBS=""
  fi

fi

CPPFLAGS="$saved_CPPFLAGS"
LDFLAGS="$saved_LDFLAGS"
LIBS="$saved_LIBS"

unset saved_CPPFLAGS
unset saved_LDFLAGS
unset saved_LIBS

AC_SUBST(HDF5_CPPFLAGS)
AC_SUBST(HDF5_LDFLAGS)
AC_SUBST(HDF5_LIBS)

])dnl