dnl Handle the --enable-html-doc option.
dnl
dnl The following snippet goes into doc/Makefile.am
dnl ------------------------
dnl CLEANFILES = yourfile.html
dnl
dnl if MAKE_HTML
dnl hdir = @htmldir@
dnl h_DATA = yourfile.html
dnl endif
dnl
dnl SUFFIXES = .html
dnl
dnl .texi.html:
dnl 	    @cd $(srcdir) && rm -f $@ $@-[0-9] $@-[0-9][0-9]
dnl 	    cd $(srcdir) && $(MAKEINFO) --html `echo $< | sed 's,.*/,,'`
dnl ------------------------
dnl
dnl Written by Alexandre Duret-Lutz <duret_g@epita.fr>

AC_DEFUN([adl_ENABLE_HTML_DOC],
 [AC_ARG_ENABLE([html-doc],
                [AC_HELP_STRING([--enable-html-doc=DIR],
                                [build and install html documentation])])
  if test "${enable_html_doc-no}" != no; then
    if test "x$enable_html_doc" = xyes; then
      htmldir="$data_dir/doc"
    else
      htmldir="$enable_html_doc"
    fi
    AC_SUBST([htmldir])
  else
    htmldir='\<none\>'
  fi
  AM_CONDITIONAL(MAKE_HTML, [test "${enable_html_doc-no}" != no])])