nit

Author: corona10

configure

@@ -5582,7 +5582,8 @@ AC_CHECK_DECLS([PR_SET_VMA_ANON_NAME],
               [AC_DEFINE([HAVE_PR_SET_VMA_ANON_NAME], [1],
                          [Define if you have the 'PR_SET_VMA_ANON_NAME' constant.])],
               [],
-              [@%:@include <linux/prctl.h>])
+              [@%:@include <linux/prctl.h>
+               @%:@include <sys/prctl.h>])
 
 # check for openpty, login_tty, and forkpty