diff --git a/lablgtk-gcc4.patch b/lablgtk-gcc4.patch
new file mode 100644
index 0000000..bea68ac
--- /dev/null
+++ b/lablgtk-gcc4.patch
@@ -0,0 +1,11 @@
+--- lablgtk-2.4.0/src/ml_panel.c.gcc4	2005-05-10 06:05:10.000000000 -0400
++++ lablgtk-2.4.0/src/ml_panel.c	2005-05-10 06:07:36.000000000 -0400
+@@ -128,7 +128,7 @@
+ static void weak_notify(gpointer data, GObject *applet)
+ {
+   value *glob_root = data;
+-  Pointer_val(*glob_root) = NULL;
++  Field(*glob_root, 1) = (long)NULL;
+   ml_global_root_destroy(glob_root);
+ }
+ 
diff --git a/lablgtk.spec b/lablgtk.spec
index f9ff74e..ba10e4a 100644
--- a/lablgtk.spec
+++ b/lablgtk.spec
@@ -1,6 +1,6 @@
 Name:           lablgtk
 Version:        2.4.0
-Release: 4
+Release: 5
 
 Summary:        Objective Caml interface to gtk+
 
@@ -8,14 +8,18 @@ Group:          System Environment/Libraries
 License:        LGPL
 URL:            http://wwwfun.kurims.kyoto-u.ac.jp/soft/olabl/lablgtk.html
 Source:         http://wwwfun.kurims.kyoto-u.ac.jp/soft/olabl/dist/lablgtk-2.4.0.tar.gz
+Patch0: lablgtk-gcc4.patch
 BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 Requires:       ocaml >= 3.08
 %{?_with_gl:Requires: lablgl >= 1.00}
 BuildRequires:  ocaml >= 3.08, camlp4 >= 3.08
+# lablgtk can generate quite extensive documentation.
+# Probably should enable this and create a subpackage for it.
+#BuildRequires:  ocaml-ocamldoc
 %{?_with_gl:BuildRequires: lablgl >= 1.00, gtkglarea2-devel}
-BuildRequires:  gtk2-devel, libglade-devel, gdk-pixbuf-devel
-BuildRequires:  librsvg2-devel, libcroco-devel
-BuildRequires:  libbonobo-devel, bonobo-activation-devel, GConf2-devel
+BuildRequires:  gtk2-devel
+BuildRequires:  libglade2-devel
+BuildRequires:  librsvg2-devel
 BuildRequires:  libgnomeui-devel, libgnomecanvas-devel, gnome-panel-devel
 
 %description
@@ -28,6 +32,7 @@ gtk+.
 
 %prep
 %setup -q
+%patch0 -p1 -b .gcc4
 
 %build
 %configure %{?_with_gl: --with-gl} %{!?_with_gl: --without-gl} --enable-debug
@@ -56,6 +61,12 @@ rm -rf $RPM_BUILD_ROOT
 %doc examples
 
 %changelog
+* Sun May 22 2005 Toshio Kuratomi <toshio-iki-lounge.com> - 2.4.0-5
+- Removed gnome-1.x BuildRequires
+- Removed BuildRequires not explicitly mentioned in the configure script
+  (These are dragged in through dependencies.)
+- Fix a gcc4 error about lvalue casting.
+
 * Sun May 22 2005 Jeremy Katz <katzj@redhat.com> - 2.4.0-4
 - rebuild on all arches