dnl Copyright (C) 2004-2006 EDF
dnl
dnl This file is part of the Code_Saturne Preprocessor.  For license
dnl information, see the LICENSE file in the top level directory of the
dnl Code_Saturne Preprocessor source distribution.

# ECS_AC_TEST_BFT(Minimal Release string, [Maximal Release string])
#------------------------------------------------------------------
# Check for BFT version ; defines BFT_CPPFLAGS, BFT_LDFLAGS, and BFT_LIBS
# locally (i.e. as simple variables, not AC_SUBST)

AC_DEFUN([ECS_AC_TEST_BFT], [

AC_ARG_WITH(bft-prefix,
  [  --with-bft-prefix=DIR   BFT installed under DIR]
)

if test "x$with_bft_prefix" != "x" ; then
  BFT_CPPFLAGS="-I$with_bft_prefix/include"
  BFT_LDFLAGS="-L$with_bft_prefix/lib"
  bft_config="$with_bft_prefix/bin/bft-config"
else
  BFT_CPPFLAGS=""
  BFT_LDFLAGS=""
  bft_config="bft-config"
fi
BFT_LIBS="-lbft"

type "$bft_config" > /dev/null 2>&1
if test "$?" = "0" ; then
  BFT_CPPFLAGS="$BFT_CPPFLAGS `$bft_config --cppflags`"
  BFT_LDFLAGS="$BFT_LDFLAGS `$bft_config --ldflags`"
  BFT_LIBS="$BFT_LIBS `$bft_config --libs`"
fi

bft_version_min=$1
bft_version_max=$2

if test "x$bft_version_min" != "x" ; then
  if test "x$bft_version_max" != "x" ; then
    AC_MSG_CHECKING([for bft version >= $1 and <= $2])
  else
    AC_MSG_CHECKING([for bft version >= $1])
  fi
else
  bft_version_min="0.0.0"
fi

bft_version_major_min=`echo "$bft_version_min" | cut -f1 -d.`
bft_version_minor_min=`echo "$bft_version_min" | cut -f2 -d.`
bft_version_release_min=`echo "$bft_version_min" | cut -f3 -d.`
if test    "$bft_version_major_min" = "" \
        -o "$bft_version_minor_min" = "" \
        -o "$bft_version_release_min" = ""; then
  AC_MSG_FAILURE([bad BFT version definition in configure.ac: $bft_version_min])
fi

if test "x$bft_version_max" != "x" ; then
  bft_version_major_max=`echo "$bft_version_max" | cut -f1 -d.`
  bft_version_minor_max=`echo "$bft_version_max" | cut -f2 -d.`
  bft_version_release_max=`echo "$bft_version_max" | cut -f3 -d.`
  if test    "$bft_version_major_max" = "" \
          -o "$bft_version_minor_max" = "" \
          -o "$bft_version_release_max" = ""; then
    AC_MSG_FAILURE([bad BFT version definition in configure.ac: $bft_version_max])
  fi
else
  bft_version_major_max=99999999
  bft_version_minor_max=99999999
  bft_version_release_max=99999999
fi

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

CPPFLAGS="${CPPFLAGS} $BFT_CPPFLAGS"
LDFLAGS="${LDFLAGS} $BFT_LDFLAGS"
LIBS="${LIBS} $BFT_LIBS"

AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <bft_config.h>
]],
[[#if BFT_MAJOR_VERSION < $bft_version_major_min
#  error BFT major version < $bft_version_major_min
#elif BFT_MAJOR_VERSION == $bft_version_major_min
#  if BFT_MINOR_VERSION < $bft_version_minor_min
#    error BFT minor version < $bft_version_minor_min
#  elif BFT_MINOR_VERSION == $bft_version_minor_min
#    if BFT_RELEASE_VERSION < $bft_version_release_min
#      error BFT release version < $bft_version_release_min
#    endif
#  endif
#endif
#if BFT_MAJOR_VERSION > $bft_version_major_max
#  error BFT major version > $bft_version_major_max
#elif BFT_MAJOR_VERSION == $bft_version_major_max
#  if BFT_MINOR_VERSION > $bft_version_minor_max
#    error BFT minor version > $bft_version_minor_max
#  elif BFT_MINOR_VERSION == $bft_version_minor_max
#    if BFT_RELEASE_VERSION > $bft_version_release_max
#      error BFT release version < $bft_version_release_max
#    endif
#  endif
#endif
]])],
               [AC_MSG_RESULT([compatible bft version found])],
               [AC_MSG_FAILURE([compatible bft version not found])])

unset bft_version_major_min
unset bft_version_minor_min
unset bft_version_release_min
unset bft_version_major_max
unset bft_version_minor_max
unset bft_version_release_max

unset bft_version_min
unset bft_version_max
unset bft_config

# Restore old LIBS to add $BFT_LIBS later, as other tests
# might otherwise not run if a shared library is not found

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

unset saved_CPPFLAGS
unset saved_LDFLAGS
unset saved_LIBS

])dnl