Only in cpulimit-git: patch~
diff --unified --recursive --text cpulimit-git/src/cpulimit.c cpulimit-git-patched/src/cpulimit.c
--- cpulimit-git/src/cpulimit.c	2021-05-23 14:30:31.441532911 -0600
+++ cpulimit-git-patched/src/cpulimit.c	2021-05-23 14:29:24.612229881 -0600
@@ -38,7 +38,6 @@
 #include <string.h>
 #include <sys/stat.h>
 #include <sys/time.h>
-#include <sys/sysctl.h>
 #include <sys/resource.h>
 #include <sys/types.h>
 #include <sys/wait.h>