AC_DEFUN([LX_DOCDIR_SUFFIX],

 [

   AC_ARG_WITH([docsuffix],

 AS_HELP_STRING([--with-docsuffix=DOCSUFFIX], [install the documentation under datadir/doc/DOCSUFFIX]),

               [], [with_docsuffix=no])

   AC_MSG_CHECKING([for the value of DOCSUFFIX])

   if test x"$with_docsuffix" != x"no"; then

     DOCSUFFIX="$with_docsuffix"

   else

     DOCSUFFIX="$PACKAGE_TARNAME-$PACKAGE_VERSION"

   fi

   AC_MSG_RESULT([$DOCSUFFIX])

   AC_SUBST(DOCSUFFIX)

 ])