diff --git a/lang/mono6.8/files/patch-mono_mini_driver.c b/lang/mono6.8/files/patch-mono_mini_driver.c
new file mode 100644
index 000000000000..b3601c0d082f
--- /dev/null
+++ b/lang/mono6.8/files/patch-mono_mini_driver.c
@@ -0,0 +1,21 @@
+--- mono/mini/driver.c.orig	2018-08-24 08:17:13.000000000 -0700
++++ mono/mini/driver.c	2021-11-27 20:03:33.006998000 -0800
+@@ -16,6 +16,8 @@
+ #include <signal.h>
+ #endif
+ #if HAVE_SCHED_SETAFFINITY
++#include <sys/param.h>
++#define _WITH_CPU_SET_T
+ #include <sched.h>
+ #endif
+ #ifdef HAVE_UNISTD_H
+@@ -1652,6 +1654,9 @@
+ #if HAVE_SCHED_SETAFFINITY
+ 	if (!use_smp) {
+ 		unsigned long proc_mask = 1;
++#if defined(__FreeBSD_version) && __FreeBSD_version >= 1400042
++#undef GLIBC_BEFORE_2_3_4_SCHED_SETAFFINITY
++#endif
+ #ifdef GLIBC_BEFORE_2_3_4_SCHED_SETAFFINITY
+ 		sched_setaffinity (getpid(), (gpointer)&proc_mask);
+ #else
diff --git a/lang/mono6.8/files/patch-mono_utils_mono-proclib.c b/lang/mono6.8/files/patch-mono_utils_mono-proclib.c
new file mode 100644
index 000000000000..94221193c985
--- /dev/null
+++ b/lang/mono6.8/files/patch-mono_utils_mono-proclib.c
@@ -0,0 +1,10 @@
+--- mono/utils/mono-proclib.c.orig	2018-08-24 08:17:13.000000000 -0700
++++ mono/utils/mono-proclib.c	2021-11-27 14:55:20.354869000 -0800
+@@ -17,6 +17,7 @@
+ #include <unistd.h>
+ #endif
+ #ifdef HAVE_SCHED_GETAFFINITY
++#define _WITH_CPU_SET_T
+ #include <sched.h>
+ #endif
+