diff --git a/gdk/wayland/gdkdevice-wayland.c b/gdk/wayland/gdkdevice-wayland.c
index 973005a..644169f 100644
--- gdk/wayland/gdkdevice-wayland.c
+++ gdk/wayland/gdkdevice-wayland.c
@@ -45,6 +45,18 @@
 #include <dev/evdev/input.h>
 #elif defined(HAVE_LINUX_INPUT_H)
 #include <linux/input.h>
+#else
+/* Neither the Linux uapi header nor its FreeBSD evdev equivalent is
+ * available (e.g. macOS). wl_pointer.button and wl_tablet_tool.button
+ * carry these as raw Linux evdev codes over the wire regardless of
+ * host OS, so define the handful actually used below by hand. */
+#define BTN_LEFT     0x110
+#define BTN_RIGHT    0x111
+#define BTN_MIDDLE   0x112
+#define BTN_FORWARD  0x115
+#define BTN_BACK     0x116
+#define BTN_STYLUS   0x14b
+#define BTN_STYLUS2  0x14c
 #endif
 
 #define BUTTON_BASE (BTN_LEFT - 1) /* Used to translate to 1-indexed buttons */