mark Linux-specific configuration options

PLATFORM_LINUX is used as a dependency for applets or features
which require Linux-specific interfaces.

Signed-off-by: Jeremie Koenig <jk@jk.fr.eu.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

19 files changed, 114 insertions, 4 deletions

diff --git a/Config.in b/Config.in
index eebc9774d..35f43b3cd 100644
--- a/Config.in
+++ b/Config.in
@@ -47,6 +47,17 @@ config USE_PORTABLE_CODE
 	  compiler other than gcc.
 	  If you do use gcc, this option may needlessly increase code size.
 
+config PLATFORM_LINUX
+	bool "Enable Linux-specific applets and features"
+	default y
+	help
+	  For the most part, busybox requires only POSIX compatibility
+	  from the target system, but some applets and features use
+	  Linux-specific interfaces.
+
+	  Answering 'N' here will disable such applets and hide the
+	  corresponding configuration options.
+
 choice
 	prompt "Buffer allocation policy"
 	default FEATURE_BUFFERS_USE_MALLOC
@@ -353,6 +364,7 @@ config FEATURE_SUID_CONFIG_QUIET
 config SELINUX
 	bool "Support NSA Security Enhanced Linux"
 	default n
+	depends on PLATFORM_LINUX
 	help
 	  Enable support for SELinux in applets ls, ps, and id. Also provide
 	  the option of compiling in SELinux applets.
diff --git a/console-tools/Config.src b/console-tools/Config.src
index 6e3191ada..cdb26800e 100644
--- a/console-tools/Config.src
+++ b/console-tools/Config.src
@@ -10,6 +10,7 @@ INSERT
 config CHVT
 	bool "chvt"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  This program is used to change to another terminal.
 	  Example: chvt 4 (change to terminal /dev/tty4)
@@ -17,6 +18,7 @@ config CHVT
 config FGCONSOLE
 	bool "fgconsole"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  This program prints active (foreground) console number.
 
@@ -29,12 +31,14 @@ config CLEAR
 config DEALLOCVT
 	bool "deallocvt"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  This program deallocates unused virtual consoles.
 
 config DUMPKMAP
 	bool "dumpkmap"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  This program dumps the kernel's keyboard translation table to
 	  stdout, in binary format. You can then use loadkmap to load it.
@@ -42,18 +46,21 @@ config DUMPKMAP
 config KBD_MODE
 	bool "kbd_mode"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  This program reports and sets keyboard mode.
 
 config LOADFONT
 	bool "loadfont"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  This program loads a console font from standard input.
 
 config LOADKMAP
 	bool "loadkmap"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  This program loads a keyboard translation table from
 	  standard input.
@@ -61,6 +68,7 @@ config LOADKMAP
 config OPENVT
 	bool "openvt"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  This program is used to start a command on an unused
 	  virtual terminal.
@@ -92,6 +100,7 @@ config FEATURE_RESIZE_PRINT
 config SETCONSOLE
 	bool "setconsole"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  This program redirects the system console to another device,
 	  like the current tty while logged in via telnet.
@@ -106,6 +115,7 @@ config FEATURE_SETCONSOLE_LONG_OPTIONS
 config SETFONT
 	bool "setfont"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  Allows to load console screen map. Useful for i18n.
 
@@ -127,6 +137,7 @@ config DEFAULT_SETFONT_DIR
 config SETKEYCODES
 	bool "setkeycodes"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  This program loads entries into the kernel's scancode-to-keycode
 	  map, allowing unusual keyboards to generate usable keycodes.
@@ -134,12 +145,14 @@ config SETKEYCODES
 config SETLOGCONS
 	bool "setlogcons"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  This program redirects the output console of kernel messages.
 
 config SHOWKEY
 	bool "showkey"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  Shows keys pressed.
 
diff --git a/coreutils/Config.src b/coreutils/Config.src
index d4c9e0541..780b73fda 100644
--- a/coreutils/Config.src
+++ b/coreutils/Config.src
@@ -591,6 +591,7 @@ config FEATURE_SPLIT_FANCY
 config STAT
 	bool "stat"
 	default y
+	depends on PLATFORM_LINUX # statfs()
 	help
 	  display file or filesystem status.
 
@@ -606,6 +607,7 @@ config FEATURE_STAT_FORMAT
 config STTY
 	bool "stty"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  stty is used to change and print terminal line settings.
 
diff --git a/coreutils/date.c b/coreutils/date.c
index c737f09f3..cb41724af 100644
--- a/coreutils/date.c
+++ b/coreutils/date.c
@@ -72,7 +72,7 @@
 //config:config FEATURE_DATE_NANO
 //config:	bool "Support %[num]N nanosecond format specifier"
 //config:	default n
-//config:	depends on DATE
+//config:	depends on DATE && PLATFORM_LINUX # syscall(__NR_clock_gettime)
 //config:	help
 //config:	  Support %[num]N format specifier. Adds ~250 bytes of code.
 //config:
diff --git a/e2fsprogs/Config.src b/e2fsprogs/Config.src
index 62bc810f8..6043e9b57 100644
--- a/e2fsprogs/Config.src
+++ b/e2fsprogs/Config.src
@@ -33,6 +33,7 @@ config FSCK
 config LSATTR
 	bool "lsattr"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  lsattr lists the file attributes on a second extended file system.
 
diff --git a/init/Config.src b/init/Config.src
index 590e29890..a5e76be6a 100644
--- a/init/Config.src
+++ b/init/Config.src
@@ -10,6 +10,7 @@ INSERT
 config INIT
 	bool "init"
 	default y
+	depends on PLATFORM_LINUX
 	select FEATURE_SYSLOG
 	help
 	  init is the first program run when the system boots.
@@ -92,6 +93,7 @@ config FEATURE_INITRD
 config HALT
 	bool "poweroff, halt, and reboot"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  Stop all processes and either halt, reboot, or power off the system.
 
diff --git a/init/bootchartd.c b/init/bootchartd.c
index dae2fe6e9..a1c01641b 100644
--- a/init/bootchartd.c
+++ b/init/bootchartd.c
@@ -6,6 +6,7 @@
 //config:config BOOTCHARTD
 //config:	bool "bootchartd"
 //config:	default y
+//config:	depends on PLATFORM_LINUX
 //config:	help
 //config:	  bootchartd is commonly used to profile the boot process
 //config:	  for the purpose of speeding it up. In this case, it is started
diff --git a/libbb/Config.src b/libbb/Config.src
index 09bf89246..9b01757c6 100644
--- a/libbb/Config.src
+++ b/libbb/Config.src
@@ -153,6 +153,7 @@ config FEATURE_COPYBUF_KB
 config MONOTONIC_SYSCALL
 	bool "Use clock_gettime(CLOCK_MONOTONIC) syscall"
 	default n
+	depends on PLATFORM_LINUX
 	help
 	  Use clock_gettime(CLOCK_MONOTONIC) syscall for measuring
 	  time intervals (time, ping, traceroute etc need this).
diff --git a/loginutils/Config.src b/loginutils/Config.src
index 5d497c4dc..425d041b9 100644
--- a/loginutils/Config.src
+++ b/loginutils/Config.src
@@ -179,6 +179,7 @@ config DELUSER
 config GETTY
 	bool "getty"
 	default y
+	depends on PLATFORM_LINUX
 	select FEATURE_SYSLOG
 	help
 	  getty lets you log in on a tty, it is normally invoked by init.
@@ -186,6 +187,7 @@ config GETTY
 config LOGIN
 	bool "login"
 	default y
+	depends on PLATFORM_LINUX
 	select FEATURE_SUID
 	select FEATURE_SYSLOG
 	help
@@ -295,6 +297,7 @@ config SULOGIN
 config VLOCK
 	bool "vlock"
 	default y
+	depends on PLATFORM_LINUX
 	select FEATURE_SUID
 	help
 	  Build the "vlock" applet which allows you to lock (virtual) terminals.
diff --git a/miscutils/Config.src b/miscutils/Config.src
index 2f7c50271..e89e231e6 100644
--- a/miscutils/Config.src
+++ b/miscutils/Config.src
@@ -10,6 +10,7 @@ INSERT
 config ADJTIMEX
 	bool "adjtimex"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  Adjtimex reads and optionally sets adjustment parameters for
 	  the Linux clock adjustment algorithm.
@@ -24,6 +25,7 @@ config BBCONFIG
 config BEEP
 	bool "beep"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  The beep applets beeps in a given freq/Hz.
 
@@ -180,6 +182,7 @@ config FEATURE_DC_LIBM
 config DEVFSD
 	bool "devfsd (obsolete)"
 	default n
+	depends on PLATFORM_LINUX
 	select FEATURE_SYSLOG
 	help
 	  This is deprecated and should NOT be used anymore.
@@ -223,6 +226,7 @@ config DEVFSD_VERBOSE
 config FEATURE_DEVFS
 	bool "Use devfs names for all devices (obsolete)"
 	default n
+	depends on PLATFORM_LINUX
 	help
 	  This is obsolete and should NOT be used anymore.
 	  Use linux >= 2.6 (optionally with hotplug) and mdev instead!
@@ -242,6 +246,7 @@ config DEVMEM
 config EJECT
 	bool "eject"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  Used to eject cdroms. (defaults to /dev/cdrom)
 
@@ -256,6 +261,7 @@ config FEATURE_EJECT_SCSI
 config FBSPLASH
 	bool "fbsplash"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  Shows splash image and progress bar on framebuffer device.
 	  Can be used during boot phase of an embedded device. ~2kb.
@@ -305,6 +311,7 @@ config FLASH_ERASEALL
 config IONICE
 	bool "ionice"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  Set/set program io scheduling class and priority
 	  Requires kernel >= 2.6.13
@@ -344,6 +351,11 @@ endchoice
 config LESS
 	bool "less"
 	default y
+	depends on PLATFORM_LINUX
+	depends on PLATFORM_LINUX
+	depends on PLATFORM_LINUX
+	depends on PLATFORM_LINUX
+	depends on PLATFORM_LINUX
 	help
 	  'less' is a pager, meaning that it displays text files. It possesses
 	  a wide array of features, and is an improvement over 'more'.
@@ -410,6 +422,7 @@ config FEATURE_LESS_LINENUMS
 config HDPARM
 	bool "hdparm"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  Get/Set hard drive parameters. Primarily intended for ATA
 	  drives. Adds about 13k (or around 30k if you enable the
@@ -526,6 +539,7 @@ config MT
 config RAIDAUTORUN
 	bool "raidautorun"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  raidautorun tells the kernel md driver to
 	  search and start RAID arrays.
@@ -533,7 +547,7 @@ config RAIDAUTORUN
 config READAHEAD
 	bool "readahead"
 	default y
-	depends on LFS
+	depends on LFS && PLATFORM_LINUX
 	help
 	  Preload the files listed on the command line into RAM cache so that
 	  subsequent reads on these files will not block on disk I/O.
@@ -550,6 +564,7 @@ config READAHEAD
 config RFKILL
 	bool "rfkill"
 	default n  # doesn't build on Ubuntu 9.04
+	depends on PLATFORM_LINUX
 	help
 	  Enable/disable wireless devices.
 
@@ -570,6 +585,7 @@ config RUNLEVEL
 config RX
 	bool "rx"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  Receive files using the Xmodem protocol.
 
@@ -641,6 +657,7 @@ config WALL
 config WATCHDOG
 	bool "watchdog"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  The watchdog utility is used with hardware or software watchdog
 	  device drivers. It opens the specified watchdog device special file
diff --git a/miscutils/conspy.c b/miscutils/conspy.c
index 509a0f271..a173d8efd 100644
--- a/miscutils/conspy.c
+++ b/miscutils/conspy.c
@@ -17,6 +17,7 @@
 //config:config CONSPY
 //config:	bool "conspy"
 //config:	default n
+//config:	depends on PLATFORM_LINUX
 //config:	help
 //config:	  A text-mode VNC like program for Linux virtual terminals.
 //config:	  example:  conspy NUM      shared access to console num
diff --git a/miscutils/ubi_attach_detach.c b/miscutils/ubi_attach_detach.c
index 7b92a8afc..0d63a10d5 100644
--- a/miscutils/ubi_attach_detach.c
+++ b/miscutils/ubi_attach_detach.c
@@ -12,12 +12,14 @@
 //config:config UBIATTACH
 //config:	bool "ubiattach"
 //config:	default n
+//config:	depends on PLATFORM_LINUX
 //config:	help
 //config:	  Attach MTD device to an UBI device.
 //config:
 //config:config UBIDETACH
 //config:	bool "ubidetach"
 //config:	default n
+//config:	depends on PLATFORM_LINUX
 //config:	help
 //config:	  Detach MTD device from an UBI device.
 
diff --git a/modutils/Config.src b/modutils/Config.src
index a7dcb3ab3..4191d29f2 100644
--- a/modutils/Config.src
+++ b/modutils/Config.src
@@ -4,6 +4,7 @@
 #
 
 menu "Linux Module Utilities"
+depends on PLATFORM_LINUX
 
 INSERT
 
diff --git a/networking/Config.src b/networking/Config.src
index 449436247..26c59e7c1 100644
--- a/networking/Config.src
+++ b/networking/Config.src
@@ -43,6 +43,7 @@ config FEATURE_PREFER_IPV4_ADDRESS
 config VERBOSE_RESOLUTION_ERRORS
 	bool "Verbose resolution errors"
 	default n
+	depends on PLATFORM_LINUX #because of xsocket() in libbb/xfuncs_prinf.c
 	help
 	  Enable if you are not satisfied with simplistic
 	  "can't resolve 'hostname.com'" and want to know more.
@@ -51,18 +52,21 @@ config VERBOSE_RESOLUTION_ERRORS
 config ARP
 	bool "arp"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  Manipulate the system ARP cache.
 
 config ARPING
 	bool "arping"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  Ping hosts by ARP packets.
 
 config BRCTL
 	bool "brctl"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  Manage ethernet bridges.
 	  Supports addbr/delbr and addif/delif.
@@ -95,6 +99,7 @@ config DNSD
 config ETHER_WAKE
 	bool "ether-wake"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  Send a magic packet to wake up sleeping machines.
 
@@ -269,6 +274,7 @@ config FEATURE_HTTPD_PROXY
 config IFCONFIG
 	bool "ifconfig"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  Ifconfig is used to configure the kernel-resident network interfaces.
 
@@ -316,6 +322,7 @@ config FEATURE_IFCONFIG_BROADCAST_PLUS
 config IFENSLAVE
 	bool "ifenslave"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  Userspace application to bind several interfaces
 	  to a logical interface (use with kernel bonding driver).
@@ -323,6 +330,7 @@ config IFENSLAVE
 config IFPLUGD
 	bool "ifplugd"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  Network interface plug detection daemon.
 
@@ -364,7 +372,7 @@ config FEATURE_IFUPDOWN_IP
 config FEATURE_IFUPDOWN_IP_BUILTIN
 	bool "Use busybox ip applet"
 	default y
-	depends on FEATURE_IFUPDOWN_IP
+	depends on FEATURE_IFUPDOWN_IP && PLATFORM_LINUX
 	select IP
 	select FEATURE_IP_ADDRESS
 	select FEATURE_IP_LINK
@@ -483,6 +491,7 @@ config FEATURE_INETD_RPC
 config IP
 	bool "ip"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  The "ip" applet is a TCP/IP interface configuration and routing
 	  utility. You generally don't need "ip" to use busybox with
@@ -598,6 +607,7 @@ config FEATURE_IPCALC_LONG_OPTIONS
 config NAMEIF
 	bool "nameif"
 	default y
+	depends on PLATFORM_LINUX
 	select FEATURE_SYSLOG
 	help
 	  nameif is used to rename network interface by its MAC address.
@@ -626,6 +636,7 @@ config FEATURE_NAMEIF_EXTENDED
 config NETSTAT
 	bool "netstat"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  netstat prints information about the Linux networking subsystem.
 
@@ -654,6 +665,7 @@ config NSLOOKUP
 config NTPD
 	bool "ntpd"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  The NTP client/server daemon.
 
@@ -668,6 +680,7 @@ config FEATURE_NTPD_SERVER
 config PING
 	bool "ping"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  ping uses the ICMP protocol's mandatory ECHO_REQUEST datagram to
 	  elicit an ICMP ECHO_RESPONSE from a host or gateway.
@@ -696,12 +709,14 @@ config PSCAN
 config ROUTE
 	bool "route"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  Route displays or manipulates the kernel's IP routing tables.
 
 config SLATTACH
 	bool "slattach"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  slattach is a small utility to attach network interfaces to serial
 	  lines.
@@ -719,6 +734,7 @@ config SLATTACH
 config TCPSVD
 	bool "tcpsvd"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  tcpsvd listens on a TCP port and runs a program for each new
 	  connection.
@@ -888,6 +904,7 @@ config TFTP_DEBUG
 config TRACEROUTE
 	bool "traceroute"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  Utility to trace the route of IP packets.
 
@@ -924,6 +941,7 @@ config FEATURE_TRACEROUTE_USE_ICMP
 config TUNCTL
 	bool "tunctl"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  tunctl creates or deletes tun devices.
 
@@ -949,6 +967,7 @@ config IFUPDOWN_UDHCPC_CMD_OPTIONS
 config UDPSVD
 	bool "udpsvd"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  udpsvd listens on an UDP port and runs a program for each new
 	  connection.
@@ -956,6 +975,7 @@ config UDPSVD
 config VCONFIG
 	bool "vconfig"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  Creates, removes, and configures VLAN interfaces
 
@@ -990,6 +1010,7 @@ config FEATURE_WGET_LONG_OPTIONS
 config ZCIP
 	bool "zcip"
 	default y
+	depends on PLATFORM_LINUX
 	select FEATURE_SYSLOG
 	help
 	  ZCIP provides ZeroConf IPv4 address selection, according to RFC 3927.
diff --git a/networking/udhcp/Config.src b/networking/udhcp/Config.src
index aac88569b..331dffc2e 100644
--- a/networking/udhcp/Config.src
+++ b/networking/udhcp/Config.src
@@ -8,6 +8,7 @@ INSERT
 config UDHCPD
 	bool "udhcp server (udhcpd)"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  udhcpd is a DHCP server geared primarily toward embedded systems,
 	  while striving to be fully functional and RFC compliant.
@@ -51,6 +52,7 @@ config DHCPD_LEASES_FILE
 config UDHCPC
 	bool "udhcp client (udhcpc)"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  udhcpc is a DHCP client geared primarily toward embedded systems,
 	  while striving to be fully functional and RFC compliant.
diff --git a/procps/Config.src b/procps/Config.src
index e61de5614..1ff6dfd30 100644
--- a/procps/Config.src
+++ b/procps/Config.src
@@ -10,6 +10,7 @@ INSERT
 config FREE
 	bool "free"
 	default y
+	depends on PLATFORM_LINUX #sysinfo()
 	help
 	  free displays the total amount of free and used physical and swap
 	  memory in the system, as well as the buffers used by the kernel.
@@ -104,7 +105,7 @@ config FEATURE_PS_WIDE
 config FEATURE_PS_TIME
 	bool "Enable time and elapsed time output"
 	default y
-	depends on PS && DESKTOP
+	depends on PS && DESKTOP && PLATFORM_LINUX #sysinfo()
 	help
 	  Support -o time and -o etime output specifiers.
 
@@ -200,6 +201,7 @@ config FEATURE_SHOW_THREADS
 config UPTIME
 	bool "uptime"
 	default y
+	depends on PLATFORM_LINUX #sysinfo()
 	help
 	  uptime gives a one line display of the current time, how long
 	  the system has been running, how many users are currently logged
diff --git a/shell/cttyhack.c b/shell/cttyhack.c
index 7af13fdfd..a80d49dc3 100644
--- a/shell/cttyhack.c
+++ b/shell/cttyhack.c
@@ -13,6 +13,7 @@
 //config:config CTTYHACK
 //config:	bool "cttyhack"
 //config:	default y
+//config:	depends on PLATFORM_LINUX
 //config:	help
 //config:	  One common problem reported on the mailing list is "can't access tty;
 //config:	  job control turned off" error message which typically appears when
diff --git a/sysklogd/Config.src b/sysklogd/Config.src
index 6d574abb1..bfe2d1cc3 100644
--- a/sysklogd/Config.src
+++ b/sysklogd/Config.src
@@ -109,6 +109,7 @@ config FEATURE_LOGREAD_REDUCED_LOCKING
 config KLOGD
 	bool "klogd"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  klogd is a utility which intercepts and logs all
 	  messages from the Linux kernel and sends the messages
diff --git a/util-linux/Config.src b/util-linux/Config.src
index 91d1fc2ce..98953c17b 100644
--- a/util-linux/Config.src
+++ b/util-linux/Config.src
@@ -10,6 +10,7 @@ INSERT
 config ACPID
 	bool "acpid"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  acpid listens to ACPI events coming either in textual form from
 	  /proc/acpi/event (though it is marked deprecated it is still widely
@@ -32,6 +33,7 @@ config FEATURE_ACPID_COMPAT
 config BLKID
 	bool "blkid"
 	default y
+	depends on PLATFORM_LINUX
 	select VOLUMEID
 	help
 	  Lists labels and UUIDs of all filesystems.
@@ -41,6 +43,7 @@ config BLKID
 config DMESG
 	bool "dmesg"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  dmesg is used to examine or control the kernel ring buffer. When the
 	  Linux kernel prints messages to the system log, they are stored in
@@ -74,6 +77,7 @@ config FEATURE_DMESG_PRETTY
 config FBSET
 	bool "fbset"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  fbset is used to show or change the settings of a Linux frame buffer
 	  device. The frame buffer device provides a simple and unique
@@ -102,6 +106,7 @@ config FEATURE_FBSET_READMODE
 config FDFLUSH
 	bool "fdflush"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  fdflush is only needed when changing media on slightly-broken
 	  removable media drives. It is used to make Linux believe that a
@@ -114,12 +119,14 @@ config FDFLUSH
 config FDFORMAT
 	bool "fdformat"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  fdformat is used to low-level format a floppy disk.
 
 config FDISK
 	bool "fdisk"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  The fdisk utility is used to divide hard disks into one or more
 	  logical disks, which are generally called partitions. This utility
@@ -187,6 +194,7 @@ config FEATURE_FDISK_ADVANCED
 config FINDFS
 	bool "findfs"
 	default y
+	depends on PLATFORM_LINUX
 	select VOLUMEID
 	help
 	  Prints the name of a filesystem with given label or UUID.
@@ -202,6 +210,7 @@ config FLOCK
 config FREERAMDISK
 	bool "freeramdisk"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  Linux allows you to create ramdisks. This utility allows you to
 	  delete them and completely free all memory that was used for the
@@ -224,12 +233,14 @@ config FSCK_MINIX
 config MKFS_EXT2
 	bool "mkfs_ext2"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  Utility to create EXT2 filesystems.
 
 config MKFS_MINIX
 	bool "mkfs_minix"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  The minix filesystem is a nice, small, compact, read-write filesystem
 	  with little overhead. If you wish to be able to create minix
@@ -247,6 +258,7 @@ config FEATURE_MINIX2
 config MKFS_REISER
 	bool "mkfs_reiser"
 	default n
+	depends on PLATFORM_LINUX
 	help
 	  Utility to create ReiserFS filesystems.
 	  Note: this applet needs a lot of testing and polishing.
@@ -254,6 +266,7 @@ config MKFS_REISER
 config MKFS_VFAT
 	bool "mkfs_vfat"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  Utility to create FAT32 filesystems.
 
@@ -302,6 +315,7 @@ config HD
 config HWCLOCK
 	bool "hwclock"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  The hwclock utility is used to read and set the hardware clock
 	  on a system. This is primarily used to set the current time on
@@ -341,6 +355,7 @@ config IPCRM
 config IPCS
 	bool "ipcs"
 	default y
+	depends on PLATFORM_LINUX
 	select FEATURE_SUID
 	help
 	  The ipcs utility is used to provide information on the currently
@@ -349,6 +364,7 @@ config IPCS
 config LOSETUP
 	bool "losetup"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  losetup is used to associate or detach a loop device with a regular
 	  file or block device, and to query the status of a loop device. This
@@ -357,6 +373,7 @@ config LOSETUP
 config LSPCI
 	bool "lspci"
 	default y
+	#depends on PLATFORM_LINUX
 	help
 	  lspci is a utility for displaying information about PCI buses in the
 	  system and devices connected to them.
@@ -366,6 +383,7 @@ config LSPCI
 config LSUSB
 	bool "lsusb"
 	default y
+	#depends on PLATFORM_LINUX
 	help
 	  lsusb is a utility for displaying information about USB buses in the
 	  system and devices connected to them.
@@ -375,6 +393,7 @@ config LSUSB
 config MDEV
 	bool "mdev"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  mdev is a mini-udev implementation for dynamically creating device
 	  nodes in the /dev directory.
@@ -473,6 +492,7 @@ config FEATURE_USE_TERMIOS
 config MOUNT
 	bool "mount"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  All files and filesystems in Unix are arranged into one big directory
 	  tree. The 'mount' utility is used to graft a filesystem onto a
@@ -555,6 +575,7 @@ config FEATURE_MOUNT_FSTAB
 config PIVOT_ROOT
 	bool "pivot_root"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  The pivot_root utility swaps the mount points for the root filesystem
 	  with some other mounted filesystem. This allows you to do all sorts
@@ -582,12 +603,14 @@ config RDEV
 config READPROFILE
 	bool "readprofile"
 	default y
+	#depends on PLATFORM_LINUX
 	help
 	  This allows you to parse /proc/profile for basic profiling.
 
 config RTCWAKE
 	bool "rtcwake"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  Enter a system sleep state until specified wakeup time.
 
@@ -607,6 +630,7 @@ config SCRIPTREPLAY
 config SETARCH
 	bool "setarch"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  The linux32 utility is used to create a 32bit environment for the
 	  specified program (usually a shell). It only makes sense to have
@@ -616,6 +640,7 @@ config SETARCH
 config SWAPONOFF
 	bool "swaponoff"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  This option enables both the 'swapon' and the 'swapoff' utilities.
 	  Once you have created some swap space using 'mkswap', you also need
@@ -634,6 +659,7 @@ config FEATURE_SWAPON_PRI
 config SWITCH_ROOT
 	bool "switch_root"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  The switch_root utility is used from initramfs to select a new
 	  root device. Under initramfs, you have to use this instead of
@@ -653,6 +679,7 @@ config SWITCH_ROOT
 config UMOUNT
 	bool "umount"
 	default y
+	depends on PLATFORM_LINUX
 	help
 	  When you want to remove a mounted filesystem from its current mount
 	  point, for example when you are shutting down the system, the