make FEATURE_HAVE_RPC auto-selectable by mount and inetd sub-features

Config.in

@@ -101,8 +101,7 @@ config FEATURE_INSTALLER
 	help
 	  Enable 'busybox --install [-s]' support.  This will allow you to use
 	  busybox at runtime to create hard links or symlinks for all the
-	  applets that are compiled into busybox.  This feature requires the
+	  applets that are compiled into busybox.
-	  /proc filesystem.
 
 config LOCALE_SUPPORT
 	bool "Enable locale support (system needs locale for this to work)"
@@ -146,7 +145,7 @@ config FEATURE_PIDFILE
 	default n
 	help
 	  This option makes some applets (crond, syslogd and inetd) write
-	  a pidfile in /var/run. Some applications rely on them
+	  a pidfile in /var/run. Some applications rely on them.
 
 config FEATURE_SUID
 	bool "Support for SUID/SGID handling"
@@ -163,13 +162,6 @@ config FEATURE_SUID
 	  are login, passwd, su, ping, traceroute, crontab, dnsd, ipcrm, ipcs,
 	  and vlock.
 
-config FEATURE_SYSLOG
-	bool "Support for syslog"
-	default n
-	help
-	  This option is auto-selected when you select any applet which may
-	  send its output to syslog. You do not need to select it manually.
-
 config FEATURE_SUID_CONFIG
 	bool "Runtime SUID/SGID configuration via /etc/busybox.conf"
 	default n if FEATURE_SUID
@@ -210,14 +202,6 @@ config FEATURE_SUID_CONFIG_QUIET
 	  /etc/busybox.conf should be readable by the user needing the SUID, check
 	  this option to avoid users to be notified about missing permissions.
 
-config FEATURE_HAVE_RPC
-	bool "RPC support"
-	default y
-	help
-	  Select this if you have rpc support.
-	  This automatically turns off all configuration options that rely
-	  on RPC.
-
 config SELINUX
 	bool "Support NSA Security Enhanced Linux"
 	default n
@@ -262,6 +246,22 @@ config BUSYBOX_EXEC_PATH
 	  executable.  If you haven't got /proc, set this to wherever you
 	  want to run BusyBox from.
 
+# These are auto-selected by other options
+
+config FEATURE_SYSLOG
+	bool "Support for logging to syslog"
+	default n
+	help
+	  This option is auto-selected when you select any applet which may
+	  send its output to syslog. You do not need to select it manually.
+
+config FEATURE_HAVE_RPC
+	bool "RPC support"
+	default n
+	help
+	  This is automatically selected if any of enabled applets need it.
+	  You do not need to select it manually.
+
 endmenu
 
 menu 'Build Options'

networking/Config.in

@@ -347,7 +347,8 @@ config FEATURE_INETD_SUPPORT_BUILTIN_CHARGEN
 config FEATURE_INETD_RPC
 	bool "Support RPC services"
 	default n
-	depends on INETD && FEATURE_HAVE_RPC
+	depends on INETD
+	select FEATURE_HAVE_RPC
 	help
 	  Support Sun-RPC based services
 

util-linux/Config.in

@@ -363,7 +363,8 @@ config MOUNT
 config FEATURE_MOUNT_NFS
 	bool "Support mounting NFS file systems"
 	default n
-	depends on MOUNT && FEATURE_HAVE_RPC
+	depends on MOUNT
+	select FEATURE_HAVE_RPC
 	select FEATURE_SYSLOG
 	help
 	  Enable mounting of NFS file systems.