Index: sys/amd64/linux/Makefile
===================================================================
--- sys/amd64/linux/Makefile
+++ sys/amd64/linux/Makefile
@@ -19,6 +19,9 @@
 all:
 	@echo "make sysent only"
 
+# We .ORDER these explicitly so that we only run MAKESYSCALLS once, rather than
+# potentially once for each ${GENERATED} file.
+.ORDER: ${GENERATED}
 sysent: ${GENERATED}
 
 ${GENERATED}: ${MAKESYSCALLS} ${SRCS}
Index: sys/amd64/linux32/Makefile
===================================================================
--- sys/amd64/linux32/Makefile
+++ sys/amd64/linux32/Makefile
@@ -19,6 +19,9 @@
 all:
 	@echo "make sysent only"
 
+# We .ORDER these explicitly so that we only run MAKESYSCALLS once, rather than
+# potentially once for each ${GENERATED} file.
+.ORDER: ${GENERATED}
 sysent: ${GENERATED}
 
 ${GENERATED}: ${MAKESYSCALLS} ${SRCS}
Index: sys/arm/linux/Makefile
===================================================================
--- sys/arm/linux/Makefile
+++ sys/arm/linux/Makefile
@@ -19,6 +19,9 @@
 all:
 	@echo "make sysent only"
 
+# We .ORDER these explicitly so that we only run MAKESYSCALLS once, rather than
+# potentially once for each ${GENERATED} file.
+.ORDER: ${GENERATED}
 sysent: ${GENERATED}
 
 ${GENERATED}: ${MAKESYSCALLS} ${SRCS}
Index: sys/arm64/linux/Makefile
===================================================================
--- sys/arm64/linux/Makefile
+++ sys/arm64/linux/Makefile
@@ -19,6 +19,9 @@
 all:
 	@echo "make sysent only"
 
+# We .ORDER these explicitly so that we only run MAKESYSCALLS once, rather than
+# potentially once for each ${GENERATED} file.
+.ORDER: ${GENERATED}
 sysent: ${GENERATED}
 
 ${GENERATED}: ${MAKESYSCALLS} ${SRCS}
Index: sys/compat/cloudabi32/Makefile
===================================================================
--- sys/compat/cloudabi32/Makefile
+++ sys/compat/cloudabi32/Makefile
@@ -17,6 +17,9 @@
 all:
 	@echo "make sysent only"
 
+# We .ORDER these explicitly so that we only run MAKESYSCALLS once, rather than
+# potentially once for each ${GENERATED} file.
+.ORDER: ${GENERATED}
 sysent: ${GENERATED}
 
 ${GENERATED}: ${MAKESYSCALLS} ${SRCS}
Index: sys/compat/cloudabi64/Makefile
===================================================================
--- sys/compat/cloudabi64/Makefile
+++ sys/compat/cloudabi64/Makefile
@@ -17,6 +17,9 @@
 all:
 	@echo "make sysent only"
 
+# We .ORDER these explicitly so that we only run MAKESYSCALLS once, rather than
+# potentially once for each ${GENERATED} file.
+.ORDER: ${GENERATED}
 sysent: ${GENERATED}
 
 ${GENERATED}: ${MAKESYSCALLS} ${SRCS}
Index: sys/compat/freebsd32/Makefile
===================================================================
--- sys/compat/freebsd32/Makefile
+++ sys/compat/freebsd32/Makefile
@@ -20,6 +20,9 @@
 all:
 	@echo "make sysent only"
 
+# We .ORDER these explicitly so that we only run MAKESYSCALLS once, rather than
+# potentially once for each ${GENERATED} file.
+.ORDER: ${GENERATED}
 sysent: ${GENERATED}
 
 ${GENERATED}: ${MAKESYSCALLS} ${SRCS}
Index: sys/i386/linux/Makefile
===================================================================
--- sys/i386/linux/Makefile
+++ sys/i386/linux/Makefile
@@ -19,6 +19,9 @@
 all:
 	@echo "make sysent only"
 
+# We .ORDER these explicitly so that we only run MAKESYSCALLS once, rather than
+# potentially once for each ${GENERATED} file.
+.ORDER: ${GENERATED}
 sysent: ${GENERATED}
 
 ${GENERATED}: ${MAKESYSCALLS} ${SRCS}
Index: sys/kern/Makefile
===================================================================
--- sys/kern/Makefile
+++ sys/kern/Makefile
@@ -13,6 +13,7 @@
 		syscalls.master
 GENERATED=	init_sysent.c		\
 		syscalls.c		\
+		systrace_args.c		\
 		../sys/syscall.h	\
 		../sys/syscall.mk	\
 		../sys/sysproto.h
@@ -20,6 +21,9 @@
 all:
 	@echo "make sysent only"
 
+# We .ORDER these explicitly so that we only run MAKESYSCALLS once, rather than
+# potentially once for each ${GENERATED} file.
+.ORDER: ${GENERATED}
 sysent: ${GENERATED}
 
 ${GENERATED}: ${MAKESYSCALLS} ${SRCS}