diff --git a/system/libdrm/files/patch-libkms_vmwgfx.c b/system/libdrm/files/patch-libkms_vmwgfx.c
new file mode 100644
index 00000000..17e68b6c
--- /dev/null
+++ b/system/libdrm/files/patch-libkms_vmwgfx.c
@@ -0,0 +1,27 @@
+# the defintion of ERESTART is behind a check for _KERNEL, but
+# defining that causes errno to not be defined. fortunately, there's
+# an alternative switch. unfortunately, those differ by platform and
+# _WANT_KERNEL_ERRNO is too recent to be part of any release, so just
+# define ERESTART if we still don't have it after including errno.h 
+#
+--- libkms/vmwgfx.c.orig	2018-05-09 22:26:03 UTC
++++ libkms/vmwgfx.c
+@@ -26,10 +26,18 @@
+  **************************************************************************/
+ 
+ 
++#if defined (__FreeBSD__) || defined (__FreeBSD_kernel__)
++#define _WANT_KERNEL_ERRNO
++#elif defined(__DragonFly__)
++#define _KERNEL_STRUCTURES
++#endif
+ #include <errno.h>
+ #include <stdlib.h>
+ #include <string.h>
+ #include "internal.h"
++#ifndef ERESTART
++#define ERESTART (-1)
++#endif
+ 
+ #include "xf86drm.h"
+ #include "libdrm_macros.h"
diff --git a/system/libdrm/files/patch-x-nouveau-Makefile.in b/system/libdrm/files/patch-x-nouveau-Makefile.in
new file mode 100644
index 00000000..c1ecc200
--- /dev/null
+++ b/system/libdrm/files/patch-x-nouveau-Makefile.in
@@ -0,0 +1,11 @@
+--- ./nouveau/Makefile.in.orig	2018-10-16 16:49:16.000000000 +0200
++++ ./nouveau/Makefile.in	2022-04-08 16:19:24.374500000 +0200
+@@ -558,7 +558,7 @@
+ 	-I$(top_srcdir) \
+ 	$(PTHREADSTUBS_CFLAGS) \
+ 	-I$(top_srcdir)/include/drm \
+-	-DDEBUG
++	
+ 
+ libdrm_nouveau_la_LTLIBRARIES = libdrm_nouveau.la
+ libdrm_nouveau_ladir = $(libdir)