diff --git a/.gitignore b/.gitignore
index 4af7c46..fd979b8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+*.tar.zst
 bindings
 test/abi
 zig-cache
diff --git a/README.md b/README.md
index 04cb21b..09297d0 100644
--- a/README.md
+++ b/README.md
@@ -31,12 +31,14 @@ use [Flatpak](https://flatpak.org/):
 
 1. Install `flatpak`.
 2. Install the base SDK dependencies:
-   - `flatpak install org.freedesktop.Sdk//22.08`
-   - `flatpak install org.gnome.Sdk//44`
+   - `flatpak install org.freedesktop.Sdk//23.08`
+   - `flatpak install org.gnome.Sdk//45`
 3. Install the Zig master extension for the Freedesktop SDK. This is not (yet)
    available on Flathub, so it must be built and installed manually.
    1. Install `flatpak-builder`.
-   2. Clone https://github.com/ianprime0509/org.freedesktop.Sdk.Extension.ziglang-master
+   2. Clone
+      https://github.com/ianprime0509/org.freedesktop.Sdk.Extension.ziglang-master
+      and use the branch corresponding to the Freedesktop SDK installed above.
    3. Inside the clone, run `flatpak-builder --user --install build-dir org.freedesktop.Sdk.Extension.ziglang-master.yml`.
 
 The steps above only need to be done once per GNOME SDK version. To enter a
@@ -57,14 +59,16 @@ get the full set of required GIR files is to set up a Flatpak development
 environment as described in the previous section. Otherwise, a custom set of
 bindings can be built by running the `zig-gobject` binary directly.
 
-To generate all available bindings using the files under `lib/gir-files`, run
-`zig build codegen`. This will generate bindings to the `bindings` directory,
-which can be used as a dependency (using the Zig package manager) in other
-projects.
+The command `zig build codegen -Dgir-profile=profile` can be used to generate
+bindings for a predefined set of GIR files expected to be present at the path
+specified by `-Dgir-files-path`, or `/usr/share/gir-1.0` if not specified. The
+currently supported profiles are `gnome44` and `gnome45`, with the default being
+`gnome45`. This will generate bindings to the `bindings` directory, which can be
+used as a dependency (using the Zig package manager) in other projects.
 
-The underlying `zig-gobject` binary can be built using `zig build` and run
-directly if more control is required over the source of the bindings (for
-example, to run on a different set of GIR files as input).
+If more control is needed over the source GIR files, `zig build` can be used to
+build the `zig-gobject` binding generator executable, and it can be run directly
+with any set of GIR input files and options.
 
 ## Further reading
 
diff --git a/build.zig b/build.zig
index a3221ab..d68483d 100644
--- a/build.zig
+++ b/build.zig
@@ -69,104 +69,216 @@ pub fn build(b: *std.Build) !void {
 }
 
 fn addCodegenStep(b: *std.Build, codegen_exe: *std.Build.Step.Compile) !*std.Build.Step {
-    const gir = [_][]const u8{
-        "Adw-1.gir",
-        "AppStreamGlib-1.0.gir",
-        "Atk-1.0.gir",
-        "Atspi-2.0.gir",
-        "cairo-1.0.gir",
-        "DBus-1.0.gir",
-        "DBusGLib-1.0.gir",
-        "fontconfig-2.0.gir",
-        "freetype2-2.0.gir",
-        "GCab-1.0.gir",
-        "Gck-1.gir",
-        "Gck-2.gir",
-        "Gcr-3.gir",
-        "Gcr-4.gir",
-        "GcrUi-3.gir",
-        "GDesktopEnums-3.0.gir",
-        "Gdk-3.0.gir",
-        "Gdk-4.0.gir",
-        "GdkPixbuf-2.0.gir",
-        "GdkPixdata-2.0.gir",
-        "GdkWayland-4.0.gir",
-        "GdkX11-3.0.gir",
-        "GdkX11-4.0.gir",
-        "Gee-0.8.gir",
-        "Geoclue-2.0.gir",
-        "Gio-2.0.gir",
-        "GIRepository-2.0.gir",
-        "GL-1.0.gir",
-        "GLib-2.0.gir",
-        "GModule-2.0.gir",
-        "GObject-2.0.gir",
-        "Graphene-1.0.gir",
-        "Gsk-4.0.gir",
-        "Gst-1.0.gir",
-        "GstAllocators-1.0.gir",
-        "GstApp-1.0.gir",
-        "GstAudio-1.0.gir",
-        "GstBadAudio-1.0.gir",
-        "GstBase-1.0.gir",
-        "GstCheck-1.0.gir",
-        "GstCodecs-1.0.gir",
-        "GstController-1.0.gir",
-        "GstGL-1.0.gir",
-        "GstGLEGL-1.0.gir",
-        "GstGLWayland-1.0.gir",
-        "GstGLX11-1.0.gir",
-        "GstInsertBin-1.0.gir",
-        "GstMpegts-1.0.gir",
-        "GstNet-1.0.gir",
-        "GstPbutils-1.0.gir",
-        "GstPlay-1.0.gir",
-        "GstPlayer-1.0.gir",
-        "GstRtp-1.0.gir",
-        "GstRtsp-1.0.gir",
-        "GstSdp-1.0.gir",
-        "GstTag-1.0.gir",
-        "GstTranscoder-1.0.gir",
-        "GstVideo-1.0.gir",
-        "GstVulkan-1.0.gir",
-        "GstVulkanWayland-1.0.gir",
-        "GstVulkanXCB-1.0.gir",
-        "GstWebRTC-1.0.gir",
-        "Gtk-3.0.gir",
-        "Gtk-4.0.gir",
-        "GtkSource-4.gir",
-        "GtkSource-5.gir",
-        "GUdev-1.0.gir",
-        "Handy-1.gir",
-        "HarfBuzz-0.0.gir",
-        "IBus-1.0.gir",
-        "JavaScriptCore-4.1.gir",
-        "JavaScriptCore-6.0.gir",
-        "Json-1.0.gir",
-        "libxml2-2.0.gir",
-        "Manette-0.2.gir",
-        "Nice-0.1.gir",
-        "Notify-0.7.gir",
-        "Pango-1.0.gir",
-        "PangoCairo-1.0.gir",
-        "PangoFc-1.0.gir",
-        "PangoFT2-1.0.gir",
-        "PangoOT-1.0.gir",
-        "Polkit-1.0.gir",
-        "Rsvg-2.0.gir",
-        "Secret-1.gir",
-        "Soup-3.0.gir",
-        "Tracker-3.0.gir",
-        "Vulkan-1.0.gir",
-        "WebKit2-4.1.gir",
-        "WebKit2WebExtension-4.1.gir",
-        "WebKit-6.0.gir",
-        "WebKitWebProcessExtension-6.0.gir",
-        "win32-1.0.gir",
-        "xfixes-4.0.gir",
-        "xft-2.0.gir",
-        "xlib-2.0.gir",
-        "xrandr-1.3.gir",
+    const GirProfile = enum { gnome44, gnome45 };
+    const gir_profile = b.option(GirProfile, "gir-profile", "Predefined GIR profile for codegen") orelse .gnome45;
+    const gir: []const []const u8 = switch (gir_profile) {
+        .gnome44 => &.{
+            "Adw-1.gir",
+            "AppStreamGlib-1.0.gir",
+            "Atk-1.0.gir",
+            "Atspi-2.0.gir",
+            "cairo-1.0.gir",
+            "DBus-1.0.gir",
+            "DBusGLib-1.0.gir",
+            "fontconfig-2.0.gir",
+            "freetype2-2.0.gir",
+            "GCab-1.0.gir",
+            "Gck-1.gir",
+            "Gck-2.gir",
+            "Gcr-3.gir",
+            "Gcr-4.gir",
+            "GcrUi-3.gir",
+            "GDesktopEnums-3.0.gir",
+            "Gdk-3.0.gir",
+            "Gdk-4.0.gir",
+            "GdkPixbuf-2.0.gir",
+            "GdkPixdata-2.0.gir",
+            "GdkWayland-4.0.gir",
+            "GdkX11-3.0.gir",
+            "GdkX11-4.0.gir",
+            "Gee-0.8.gir",
+            "Geoclue-2.0.gir",
+            "Gio-2.0.gir",
+            "GIRepository-2.0.gir",
+            "GL-1.0.gir",
+            "GLib-2.0.gir",
+            "GModule-2.0.gir",
+            "GObject-2.0.gir",
+            "Graphene-1.0.gir",
+            "Gsk-4.0.gir",
+            "Gst-1.0.gir",
+            "GstAllocators-1.0.gir",
+            "GstApp-1.0.gir",
+            "GstAudio-1.0.gir",
+            "GstBadAudio-1.0.gir",
+            "GstBase-1.0.gir",
+            "GstCheck-1.0.gir",
+            "GstCodecs-1.0.gir",
+            "GstController-1.0.gir",
+            "GstGL-1.0.gir",
+            "GstGLEGL-1.0.gir",
+            "GstGLWayland-1.0.gir",
+            "GstGLX11-1.0.gir",
+            "GstInsertBin-1.0.gir",
+            "GstMpegts-1.0.gir",
+            "GstNet-1.0.gir",
+            "GstPbutils-1.0.gir",
+            "GstPlay-1.0.gir",
+            "GstPlayer-1.0.gir",
+            "GstRtp-1.0.gir",
+            "GstRtsp-1.0.gir",
+            "GstSdp-1.0.gir",
+            "GstTag-1.0.gir",
+            "GstTranscoder-1.0.gir",
+            "GstVideo-1.0.gir",
+            "GstVulkan-1.0.gir",
+            "GstVulkanWayland-1.0.gir",
+            "GstVulkanXCB-1.0.gir",
+            "GstWebRTC-1.0.gir",
+            "Gtk-3.0.gir",
+            "Gtk-4.0.gir",
+            "GtkSource-4.gir",
+            "GtkSource-5.gir",
+            "GUdev-1.0.gir",
+            "Handy-1.gir",
+            "HarfBuzz-0.0.gir",
+            "IBus-1.0.gir",
+            "JavaScriptCore-4.1.gir",
+            "JavaScriptCore-6.0.gir",
+            "Json-1.0.gir",
+            "libxml2-2.0.gir",
+            "Manette-0.2.gir",
+            "Nice-0.1.gir",
+            "Notify-0.7.gir",
+            "Pango-1.0.gir",
+            "PangoCairo-1.0.gir",
+            "PangoFc-1.0.gir",
+            "PangoFT2-1.0.gir",
+            "PangoOT-1.0.gir",
+            "Polkit-1.0.gir",
+            "Rsvg-2.0.gir",
+            "Secret-1.gir",
+            "Soup-3.0.gir",
+            "Tracker-3.0.gir",
+            "Vulkan-1.0.gir",
+            "WebKit2-4.1.gir",
+            "WebKit2WebExtension-4.1.gir",
+            "WebKit-6.0.gir",
+            "WebKitWebProcessExtension-6.0.gir",
+            "win32-1.0.gir",
+            "xfixes-4.0.gir",
+            "xft-2.0.gir",
+            "xlib-2.0.gir",
+            "xrandr-1.3.gir",
+        },
+        .gnome45 => &.{
+            "Adw-1.gir",
+            "AppStream-1.0.gir",
+            "AppStreamCompose-1.0.gir",
+            "AppStreamGlib-1.0.gir",
+            "Atk-1.0.gir",
+            "Atspi-2.0.gir",
+            "Avahi-0.6.gir",
+            "AvahiCore-0.6.gir",
+            "cairo-1.0.gir",
+            "CudaGst-1.0.gir",
+            "DBus-1.0.gir",
+            "DBusGLib-1.0.gir",
+            "Dex-1.gir",
+            "fontconfig-2.0.gir",
+            "freetype2-2.0.gir",
+            "GCab-1.0.gir",
+            "Gck-1.gir",
+            "Gck-2.gir",
+            "Gcr-3.gir",
+            "Gcr-4.gir",
+            "GcrUi-3.gir",
+            "GDesktopEnums-3.0.gir",
+            "Gdk-3.0.gir",
+            "Gdk-4.0.gir",
+            "GdkPixbuf-2.0.gir",
+            "GdkPixdata-2.0.gir",
+            "GdkWayland-4.0.gir",
+            "GdkX11-3.0.gir",
+            "GdkX11-4.0.gir",
+            "Gee-0.8.gir",
+            "Geoclue-2.0.gir",
+            "Gio-2.0.gir",
+            "GIRepository-2.0.gir",
+            "GL-1.0.gir",
+            "GLib-2.0.gir",
+            "GModule-2.0.gir",
+            "GObject-2.0.gir",
+            "Graphene-1.0.gir",
+            "Gsk-4.0.gir",
+            "Gst-1.0.gir",
+            "GstAllocators-1.0.gir",
+            "GstApp-1.0.gir",
+            "GstAudio-1.0.gir",
+            "GstBadAudio-1.0.gir",
+            "GstBase-1.0.gir",
+            "GstCheck-1.0.gir",
+            "GstCodecs-1.0.gir",
+            "GstController-1.0.gir",
+            "GstCuda-1.0.gir",
+            "GstGL-1.0.gir",
+            "GstGLEGL-1.0.gir",
+            "GstGLWayland-1.0.gir",
+            "GstGLX11-1.0.gir",
+            "GstInsertBin-1.0.gir",
+            "GstMpegts-1.0.gir",
+            "GstNet-1.0.gir",
+            "GstPbutils-1.0.gir",
+            "GstPlay-1.0.gir",
+            "GstPlayer-1.0.gir",
+            "GstRtp-1.0.gir",
+            "GstRtsp-1.0.gir",
+            "GstSdp-1.0.gir",
+            "GstTag-1.0.gir",
+            "GstTranscoder-1.0.gir",
+            "GstVa-1.0.gir",
+            "GstVideo-1.0.gir",
+            "GstVulkan-1.0.gir",
+            "GstVulkanWayland-1.0.gir",
+            "GstVulkanXCB-1.0.gir",
+            "GstWebRTC-1.0.gir",
+            "Gtk-3.0.gir",
+            "Gtk-4.0.gir",
+            "GtkSource-5.gir",
+            "GUdev-1.0.gir",
+            "Handy-1.gir",
+            "HarfBuzz-0.0.gir",
+            "IBus-1.0.gir",
+            "JavaScriptCore-4.1.gir",
+            "JavaScriptCore-6.0.gir",
+            "Json-1.0.gir",
+            "Libproxy-1.0.gir",
+            "libxml2-2.0.gir",
+            "Manette-0.2.gir",
+            "Nice-0.1.gir",
+            "Notify-0.7.gir",
+            "Pango-1.0.gir",
+            "PangoCairo-1.0.gir",
+            "PangoFc-1.0.gir",
+            "PangoFT2-1.0.gir",
+            "PangoOT-1.0.gir",
+            "Polkit-1.0.gir",
+            "Rsvg-2.0.gir",
+            "Secret-1.gir",
+            "Soup-3.0.gir",
+            "Tracker-3.0.gir",
+            "Vulkan-1.0.gir",
+            "WebKit2-4.1.gir",
+            "WebKit2WebExtension-4.1.gir",
+            "WebKit-6.0.gir",
+            "WebKitWebProcessExtension-6.0.gir",
+            "win32-1.0.gir",
+            "xfixes-4.0.gir",
+            "xft-2.0.gir",
+            "xlib-2.0.gir",
+            "Xmlb-2.0.gir",
+            "xrandr-1.3.gir",
+        },
     };
 
     const binding_overrides = [_][]const u8{
@@ -197,6 +309,7 @@ fn addCodegenStep(b: *std.Build, codegen_exe: *std.Build.Step.Compile) !*std.Bui
     var file_deps = std.ArrayList([]const u8).init(b.allocator);
     for (gir) |file| {
         codegen_cmd.addArg(file[0 .. file.len - ".gir".len]);
+        try file_deps.append(b.pathJoin(&.{ gir_files_path, file }));
     }
     for (binding_overrides) |file| {
         try file_deps.append(try b.build_root.join(b.allocator, &.{ "binding-overrides", file }));