--- glib/acinclude.m4	2004-05-08 11:14:46.000000000 +0100
+++ glib/acinclude.m4	2004-05-08 11:14:55.000000000 +0100
@@ -446,3 +446,56 @@
 ])
 
 
+dnl -*- mode: autoconf -*-
+
+# serial 1
+
+dnl Usage:
+dnl   GTK_DOC_CHECK([minimum-gtk-doc-version])
+AC_DEFUN([GTK_DOC_CHECK],
+[
+  AC_BEFORE([AC_PROG_LIBTOOL],[$0])dnl setup libtool first
+  AC_BEFORE([AM_PROG_LIBTOOL],[$0])dnl setup libtool first
+  dnl for overriding the documentation installation directory
+  AC_ARG_WITH(html-dir,
+    AC_HELP_STRING([--with-html-dir=PATH], [path to installed docs]),,
+    [with_html_dir='${datadir}/gtk-doc/html'])
+  HTML_DIR="$with_html_dir"
+  AC_SUBST(HTML_DIR)
+
+  dnl enable/disable documentation building
+  AC_ARG_ENABLE(gtk-doc,
+    AC_HELP_STRING([--enable-gtk-doc],
+                   [use gtk-doc to build documentation [default=no]]),,
+    enable_gtk_doc=no)
+
+  have_gtk_doc=no
+  if test -z "$PKG_CONFIG"; then
+    AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
+  fi
+  if test "$PKG_CONFIG" != "no" && $PKG_CONFIG --exists gtk-doc; then
+    have_gtk_doc=yes
+  fi
+
+  dnl do we want to do a version check?
+ifelse([$1],[],,
+  [gtk_doc_min_version=$1
+  if test "$have_gtk_doc" = yes; then
+    AC_MSG_CHECKING([gtk-doc version >= $gtk_doc_min_version])
+    if $PKG_CONFIG --atleast-version $gtk_doc_min_version gtk-doc; then
+      AC_MSG_RESULT(yes)
+    else
+      AC_MSG_RESULT(no)
+      have_gtk_doc=no
+    fi
+  fi
+])
+  if test x$enable_gtk_doc = xyes; then
+    if test "$have_gtk_doc" != yes; then
+      enable_gtk_doc=no
+    fi
+  fi
+
+  AM_CONDITIONAL(ENABLE_GTK_DOC, test x$enable_gtk_doc = xyes)
+  AM_CONDITIONAL(GTK_DOC_USE_LIBTOOL, test -n "$LIBTOOL")
+])