AC_ARG_WITH(python,
	[ --with-python[=DIR]              interface to R language],
	if test "$withval" = yes; then
	    yap_cv_python=yes
	elif test "$withval" = no; then
	    yap_cv_python=no
	else
	    yap_cv_python=$withval
	fi,
	[yap_cv_python=no])

if test "$yap_cv_python" = "no"; then
    PYTHON_TARGET="dummy"
    PKG_PYTHON=""
elif test -e "$srcdir"/packages/python/Makefile.in ; then
   PYTHON_TARGET="pitf"
   PKG_PYTHON="packages/python"
   if test "$yap_cv_python" = "yes"
   then
      AC_CHECK_PROGS(PYTHON, python, "none")
   else
     PYTHON="$yap_cv_python"
   fi
   if test "$i_am_cross_compiling" = yes 
   then
     #mingw
     PYTHON_DIR=`which "$PYTHON"`
     PYTHON_DIR=`dirname "$PYTHON_DIR"`
     PYTHON_DLL=`echo "$PYTHON_DIR"/python*.dll`
     PYTHON_LIBS="\"$PYTHON_DLL\""
     PYTHON_INCLUDES="-I \"$PYTHON_DIR\"/include"
   else
     PYTHONHOME=`$PYTHON -c'import sys; sys.stdout.write(sys.prefix)'`
     PYTHONHOME=`(cd "$PYTHONHOME" && pwd)`
     PYTHONVERSION=`"$PYTHON" -c "import sys; sys.stdout.write(sys.version[[:3]])"`
     if test -d "$PYTHONHOME/libs"; then
       #mingw
       PYTHON_DIR="$PYTHONHOME"
       PYTHON_DLL=`echo "$PYTHON_DIR"/DLLs/python*.dll`
       PYTHON_LIBS="\"$PYTHON_DLL\""
       PYTHON_INCLUDES="-I \"$PYTHON_DIR\"/include"
     elif test -d "$PYTHONHOME/lib"; then
       # unix, mac
       PYTHON_LIBS="-L $PYTHONHOME/lib"
       OLIBS=$LIBS
       LIBS=$PYTHON_LIBS
       AC_SEARCH_LIBS(Py_Initialize, [python"$PYTHONVERSION" python"$PYTHONVERSION"m],,[echo "Could not find libraries for Python";
      				   PKG_PYTHON=""],"$OLIBS")  
       PYTHON_LIBS=$LIBS
       LIBS=$OLIBS
       if test -d "$PYTHONHOME/include/python$PYTHONVERSION"; then
         PYTHON_INCLUDES="-I $PYTHONHOME/include/python$PYTHONVERSION"
       elif test -d "$PYTHONHOME/include/python$PYTHONVERSION"m; then
         PYTHON_INCLUDES="-I $PYTHONHOME/include/python$PYTHONVERSION"m
       elif test -d "$PYTHONHOME/include"; then
         PYTHON_INCLUDES="-I $PYTHONHOME/include"
       else
         echo "Could not find includes for Python"
         PKG_PYTHON=""
       fi
     else
       echo "Could not find libraries for Python"
       PKG_PYTHON=""
     fi
   fi
else
    PYTHON_TARGET="dummy"
    PKG_PYTHON=""
fi

if test "$PKG_PYTHON" != ""; then

AC_SUBST(PYTHON_TARGET)
AC_SUBST(PKG_PYTHON)
AC_SUBST(PYTHON_INCLUDES)
AC_SUBST(PYTHON_LIBS)

AC_CONFIG_FILES([ packages/python/Makefile ])
fi