# **************************************************************************
# MOL_AC_HAVE_QWT_IFELSE( IF-FOUND, IF-NOT-FOUND )
#
# Variables:
#   mol_ac_have_qwt
#   mol_ac_qwt_cxxflags
#   mol_ac_qwt_ldflags
#   mol_ac_qwt_libs
#
# Authors:
#   Anette Gjetnes <anetteg@mol.no>, based on sps.m4
#   Frederik Heber <frederik.heber@googlemail.com>, bases on qwt.m4

# Todo:
# - use AS_UNSET to unset internal variables to avoid polluting the environment
#

# **************************************************************************

AC_DEFUN([MOL_AC_HAVE_QWT_IFELSE],
[: ${mol_ac_have_qwt=false}
AC_MSG_CHECKING([for Qwt])
AC_ARG_WITH(
  [qwt-includedir],
  [AC_HELP_STRING([--with-qwt-includedir=PATH], [state directory with Qwt includes])],
  [mol_ac_qwt_include_path=$withval],
  [mol_ac_want_qwt=true])
AC_ARG_WITH(
  [qwt-libdir],
  [AC_HELP_STRING([--with-qwt-libdir=PATH], [state directory with Qwt libs])],
  [mol_ac_qwt_lib_path=$withval],
  [mol_ac_want_qwt=true])

#  $mol_ac_have_qwt && break
  mol_ac_qwt_save_CXXFLAGS=$CXXFLAGS
  mol_ac_qwt_save_LDFLAGS=$LDFLAGS
  mol_ac_qwt_save_LIBS=$LIBS
  mol_ac_qwt_debug=false
  test -n "`echo -- $CXXFLAGS $CFLAGS $CXXFLAGS | grep -- '-g\\>'`" &&
    mol_ac_qwt_debug=true
  # test -z "$mol_ac_qwt_path" -a x"$prefix" != xNONE &&
  #   mol_ac_qwt_path=$prefix
  mol_ac_qwt_name=qwt
  CXXFLAGS="$CXXFLAGS $QT_CFLAGS"
  if test -z "$mol_ac_qwt_include_path"; then
	mol_ac_qwt_include_path=`locate qwt.h | xargs dirname`
  fi
  if test -n "$mol_ac_qwt_include_path"; then
    mol_ac_qwt_cxxflags="-I$mol_ac_qwt_include_path"
    CXXFLAGS="$CXXFLAGS $mol_ac_qwt_cxxflags"
  fi
  LDFLAGS="$LDFLAGS $QT_LDFLAGS"
  if test -z "$mol_ac_qwt_lib_path"; then
	mol_ac_qwt_lib_path=`locate libqwt-qt4.so | head -n 1 | xargs dirname`
  fi
  if test -n "$mol_ac_qwt_lib_path"; then
    for mol_ac_qwt_candidate in \
      `( ls $mol_ac_qwt_lib_path/qwt*.lib;
         ls $mol_ac_qwt_lib_path/qwt*d.lib;
         ls $mol_ac_qwt_lib_path/libqwt*.so;
         ls $mol_ac_qwt_lib_path/libqwt*d.so ) 2>/dev/null`
    do
      case $mol_ac_qwt_candidate in
      *d.lib)
        $mol_ac_qwt_debug &&
          mol_ac_qwt_name=`basename $mol_ac_qwt_candidate .lib` ;;
      *.lib)
        mol_ac_qwt_name=`basename $mol_ac_qwt_candidate .lib` ;;
      *d.so)
        $mol_ac_qwt_debug &&
          mol_ac_qwt_name=`basename $mol_ac_qwt_candidate .so | sed -e 's#^lib##'` ;;
      *.so)
        mol_ac_qwt_name=`basename $mol_ac_qwt_candidate .so | sed -e 's#^lib##'` ;;
      esac
    done
    mol_ac_qwt_ldflags="-Wl,-rpath -Wl,$mol_ac_qwt_lib_path -L$mol_ac_qwt_lib_path"
    LDFLAGS="$LDFLAGS $mol_ac_qwt_ldflags"
    # unset mol_ac_qwt_candidate
    # unset mol_ac_qwt_path
  fi

  mol_ac_qwt_libs="-l$mol_ac_qwt_name"
  LIBS="$LIBS $mol_ac_qwt_libs"
  AC_LANG_SAVE
  AC_LANG_CPLUSPLUS
  AC_TRY_LINK(
    [#include <qwt_plot.h>],
    [QwtPlot * plot = new QwtPlot();],
    [mol_ac_have_qwt=true])
  AC_LANG_RESTORE
  CXXFLAGS=$mol_ac_qwt_save_CXXFLAGS
  LDFLAGS=$mol_ac_qwt_save_LDFLAGS
  LIBS=$mol_ac_qwt_save_LIBS
  # unset mol_ac_qwt_debug
  # unset mol_ac_qwt_name
  # unset mol_ac_qwt_save_CXXFLAGS
  # unset mol_ac_qwt_save_LDFLAGS
  # unset mol_ac_qwt_save_LIBS
if $mol_ac_have_qwt; then
  AC_MSG_RESULT([success ($mol_ac_qwt_libs)])
  AC_SUBST(mol_ac_qwt_cxxflags)
  AC_SUBST(mol_ac_qwt_ldflags)
  AC_SUBST(mol_ac_qwt_libs)
  $1
else
  AC_MSG_RESULT([failure])
  $2
fi
# unset mol_ac_want_qwt
])

# EOF **********************************************************************