Remove $(sysctl) from sysdep_routines

ChangeLog

@@ -2,7 +2,7 @@
 
 	* sysdeps/unix/sysv/linux/Makefile: Include
 	$(firstword $(wildcard $(sysdirs:=/sysctl.mk))).
-	(sysdep_routines): Replace sysctl with $(sysctl).
+	(sysdep_routines): Remove sysctl.
 	* sysdeps/unix/sysv/linux/bits/sysctl.h: New file.
 	* sysdeps/unix/sysv/linux/sysctl.mk: Likewise.
 	* sysdeps/unix/sysv/linux/x86_64/bits/sysctl.h: Likewise.

sysdeps/unix/sysv/linux/Makefile

@@ -19,7 +19,7 @@ endif
 ifeq ($(subdir),misc)
 include $(firstword $(wildcard $(sysdirs:=/sysctl.mk)))
 
-sysdep_routines += $(sysctl) clone llseek umount umount2 readahead \
+sysdep_routines += clone llseek umount umount2 readahead \
 		   setfsuid setfsgid makedev epoll_pwait signalfd \
 		   eventfd eventfd_read eventfd_write prlimit
 

sysdeps/unix/sysv/linux/sysctl.mk

@@ -1,3 +1,3 @@
 # sysctl system call has been deprecated.  It is provided for backward
-# compatility.  New target should override it (see x86_64/x32/sysctl.mk).
-sysctl = sysctl
+# compatility.  New target shouldn't add it (see x86_64/x32/sysctl.mk).
+sysdep_routines += sysctl

sysdeps/unix/sysv/linux/x86_64/x32/sysctl.mk

@@ -1,2 +1 @@
 # X32 doesn't support sysctl.
-sysctl =