diff -ur libdrm-2.0.1.old/shared-core/drm.h libdrm-2.0.1/shared-core/drm.h
--- libdrm-2.0.1.old/shared-core/drm.h	2006-01-02 06:55:31.000000000 +0100
+++ libdrm-2.0.1/shared-core/drm.h	2006-04-19 12:06:18.000000000 +0200
@@ -79,8 +79,8 @@
 #define DRM_IOC_WRITE		_IOC_WRITE
 #define DRM_IOC_READWRITE	_IOC_READ|_IOC_WRITE
 #define DRM_IOC(dir, group, nr, size) _IOC(dir, group, nr, size)
-#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
-#if defined(__FreeBSD__) && defined(IN_MODULE)
+#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
+#if (defined(__FreeBSD__) || defined(__FreeBSD_kernel__)) && defined(IN_MODULE)
 /* Prevent name collision when including sys/ioccom.h */
 #undef ioctl
 #include <sys/ioccom.h>