ar71xx: enable wlan2g led in the default configuration of dir-825-c1
[openwrt/svn-archive/archive.git] / Config.in
index 4231f85..2074245 100644 (file)
--- a/Config.in
+++ b/Config.in
@@ -1,4 +1,4 @@
-# Copyright (C) 2006-2010 OpenWrt.org
+# Copyright (C) 2006-2012 OpenWrt.org
 #
 # This is free software, licensed under the GNU General Public License v2.
 # See /LICENSE for more information.
@@ -6,6 +6,10 @@
 
 mainmenu "OpenWrt Configuration"
 
+config MODULES
+       bool
+       default y
+
 config HAVE_DOT_CONFIG
        bool
        default y
@@ -25,7 +29,7 @@ menu "Target Images"
                        default TARGET_INITRAMFS_COMPRESSION_LZMA if TARGET_ar71xx
                        default TARGET_INITRAMFS_COMPRESSION_LZMA if TARGET_ramips
                        default TARGET_INITRAMFS_COMPRESSION_NONE
-                       depends TARGET_ROOTFS_INITRAMFS
+                       depends on TARGET_ROOTFS_INITRAMFS
                        help
                          Select ramdisk compression.
 
@@ -46,7 +50,6 @@ menu "Target Images"
 
                        config TARGET_INITRAMFS_COMPRESSION_XZ
                                bool "xz"
-                               depends LINUX_2_6_38
                endchoice
 
                config EXTERNAL_CPIO
@@ -75,35 +78,39 @@ menu "Target Images"
        config TARGET_ROOTFS_EXT4FS
                bool "ext4"
                default y if USES_EXT4
-               depends !TARGET_ROOTFS_INITRAMFS
                help
                  Ext4 file system with some free space for uml images
 
        config TARGET_ROOTFS_ISO
                bool "iso"
                default n
-               depends TARGET_ROOTFS_INITRAMFS && TARGET_x86
+               depends on TARGET_x86_generic
                help
                  Create some bootable ISO image
 
        config TARGET_ROOTFS_JFFS2
                bool "jffs2"
                default y if USES_JFFS2
-               depends !TARGET_ROOTFS_INITRAMFS
                help
                  Build a jffs2 root filesystem
 
+       config TARGET_ROOTFS_JFFS2_NAND
+               bool "jffs2 for NAND"
+               default y if USES_JFFS2_NAND
+               depends on USES_JFFS2_NAND
+               help
+                 Build a jffs2 root filesystem for NAND flash
+
        config TARGET_ROOTFS_SQUASHFS
                bool "squashfs"
                default y if USES_SQUASHFS
-               depends !TARGET_ROOTFS_INITRAMFS
                help
                  Build a squashfs-lzma root filesystem
 
        config TARGET_ROOTFS_UBIFS
                bool "ubifs"
                default y if USES_UBIFS
-               depends !TARGET_ROOTFS_INITRAMFS && USES_UBIFS
+               depends on USES_UBIFS
                help
                  Build a ubifs root filesystem
 
@@ -113,17 +120,40 @@ menu "Target Images"
 
        config TARGET_ROOTFS_PARTSIZE
                int "Root filesystem partition size (in MB)"
-               depends X86_GRUB_IMAGES || TARGET_ROOTFS_EXT4FS || TARGET_rb532
+               depends on X86_GRUB_IMAGES || TARGET_ROOTFS_EXT4FS || TARGET_rb532
                default 48
                help
-                   Allows you to change the root filesystem partition size
+                 Allows you to change the root filesystem partition size
 
        config TARGET_ROOTFS_MAXINODE
                int "Maximum number of inodes in root filesystem"
-               depends TARGET_ROOTFS_EXT4FS
+               depends on TARGET_ROOTFS_EXT4FS
                default 6000
                help
-                   Allows you to change the maximum number of inodes in the root filesystem
+                 Allows you to change the maximum number of inodes in the root filesystem
+
+       config TARGET_ROOTFS_RESERVED_PCT
+               int "Percentage of reserved blocks in root filesystem"
+               depends on TARGET_ROOTFS_EXT4FS
+               default 0
+               help
+                 Allows you to change the percentage of reserved blocks in the root filesystem
+
+       config TARGET_ROOTFS_INCLUDE_KERNEL
+               bool "Include kernel in root filesystem"
+               depends on TARGET_ROOTFS_UBIFS || TARGET_ROOTFS_EXT4FS
+               default n if USES_UBIFS
+               help
+                 Include the kernel image in the rootfs. Typically the image is placed
+                 below /boot.
+
+       config TARGET_ROOTFS_INCLUDE_DTB
+               bool "Include DTB in root filesystem"
+               depends on TARGET_ROOTFS_UBIFS || TARGET_ROOTFS_EXT4FS
+               default n if USES_UBIFS
+               help
+                 Include the device tree blob file(s) in the rootfs. Typically the DTBs
+                 are placed below /boot.
 
 endmenu
 
@@ -154,6 +184,13 @@ menu "Global build settings"
                  When this option is enabled, packages are built with the full versions of iconv and GNU gettext
                  instead of the default OpenWrt stubs. If uClibc is used, it is also built with locale support.
 
+       config BUILD_STATIC_TOOLS
+               default n
+               bool "Attempt to link host utilities statically"
+               help
+                 Linking host utilities like sed or firmware-utils statically increases the portability of the
+                 generated ImageBuilder and SDK tarballs, however it may fail on some Linux distributions.
+
        config SHADOW_PASSWORDS
                bool
                prompt "Enable shadow password support"
@@ -166,7 +203,7 @@ menu "Global build settings"
                prompt "Remove ipkg/opkg status data files in final images"
                default n
                help
-                       This removes all ipkg/opkg status data files from the target directory before building the root fs
+                 This removes all ipkg/opkg status data files from the target directory before building the root fs
 
        config COLLECT_KERNEL_DEBUG
                bool
@@ -174,8 +211,8 @@ menu "Global build settings"
                select KERNEL_DEBUG_INFO
                default n
                help
-                       This collects debugging symbols from the kernel and all compiled modules.
-                       Useful for release builds, so that kernel issues can be debugged offline later.
+                 This collects debugging symbols from the kernel and all compiled modules.
+                 Useful for release builds, so that kernel issues can be debugged offline later.
 
        comment "Kernel build options"
 
@@ -187,34 +224,59 @@ menu "Global build settings"
                  debugging files into. Enable this option to be able to read and
                  write to these files.
 
+       config KERNEL_PERF_EVENTS
+               bool
+               default n
+
        config KERNEL_PROFILING
                bool "Compile the kernel with profiling enabled"
                default n
+               select KERNEL_PERF_EVENTS
                help
                  Enable the extended profiling support mechanisms used by profilers such
                  as OProfile.
 
        config KERNEL_KALLSYMS
                bool "Compile the kernel with symbol table information"
-               default n
+               default y
                help
                  This will give you more information in stack traces from kernel oopses
 
+       config KERNEL_FTRACE
+               bool "Compile the kernel with tracing support"
+               default n
+
+       config KERNEL_FTRACE_SYSCALLS
+               bool "Trace system calls"
+               depends on KERNEL_FTRACE
+               default n
+
+       config KERNEL_ENABLE_DEFAULT_TRACERS
+               bool "Trace process context switches and events"
+               depends on KERNEL_FTRACE
+               default n
+
        config KERNEL_DEBUG_KERNEL
                bool
                default n
 
        config KERNEL_DEBUG_INFO
                bool "Compile the kernel with debug information"
-               default n
+               default y
                select KERNEL_DEBUG_KERNEL
                help
                  This will compile your kernel and modules with debug information.
 
+       config KERNEL_DEBUG_LL_UART_NONE
+               bool
+               default n
+               depends on arm
+
        config KERNEL_DEBUG_LL
                bool
                default n
                depends on arm
+               select KERNEL_DEBUG_LL_UART_NONE
                help
                  ARM low level debugging
 
@@ -234,12 +296,20 @@ menu "Global build settings"
                bool "Compile the kernel with asynchronous IO support"
                default n
 
+       config KERNEL_DIRECT_IO
+               bool "Compile the kernel with direct IO support"
+               default n
+
        config KERNEL_MAGIC_SYSRQ
                bool "Compile the kernel with SysRq support"
                default y
 
+       config KERNEL_COREDUMP
+               bool
+
        config KERNEL_ELF_CORE
                bool "Enable process core dump support"
+               select KERNEL_COREDUMP
                default y
 
        config KERNEL_PROVE_LOCKING
@@ -251,6 +321,319 @@ menu "Global build settings"
                bool "Enable printk timestamps"
                default y
 
+       config KERNEL_RELAY
+               bool
+
+       config KERNEL_KEXEC
+               bool "Enable kexec support"
+
+       config USE_RFKILL
+               bool "Enable rfkill support"
+               default RFKILL_SUPPORT
+
+       #
+       # CGROUP support symbols
+       #
+
+       config KERNEL_CGROUPS
+               bool "Enable kernel cgroups"
+               default n
+
+       if KERNEL_CGROUPS
+
+               config KERNEL_CGROUP_DEBUG
+                       bool "Example debug cgroup subsystem"
+                       default n
+                       help
+                         This option enables a simple cgroup subsystem that
+                         exports useful debugging information about the cgroups
+                         framework.
+
+               config KERNEL_FREEZER
+                       bool
+                       default y if KERNEL_CGROUP_FREEZER
+
+               config KERNEL_CGROUP_FREEZER
+                       bool "Freezer cgroup subsystem"
+                       default n
+                       help
+                         Provides a way to freeze and unfreeze all tasks in a
+                         cgroup.
+
+               config KERNEL_CGROUP_DEVICE
+                       bool "Device controller for cgroups"
+                       default y
+                       help
+                         Provides a cgroup implementing whitelists for devices which
+                         a process in the cgroup can mknod or open.
+
+               config KERNEL_CPUSETS
+                       bool "Cpuset support"
+                       default n
+                       help
+                         This option will let you create and manage CPUSETs which
+                         allow dynamically partitioning a system into sets of CPUs and
+                         Memory Nodes and assigning tasks to run only within those sets.
+                         This is primarily useful on large SMP or NUMA systems.
+
+               config KERNEL_PROC_PID_CPUSET
+                       bool "Include legacy /proc/<pid>/cpuset file"
+                       default n
+                       depends on KERNEL_CPUSETS
+
+               config KERNEL_CGROUP_CPUACCT
+                       bool "Simple CPU accounting cgroup subsystem"
+                       default n
+                       help
+                         Provides a simple Resource Controller for monitoring the
+                         total CPU consumed by the tasks in a cgroup.
+
+               config KERNEL_RESOURCE_COUNTERS
+                       bool "Resource counters"
+                       default n
+                       help
+                         This option enables controller independent resource accounting
+                         infrastructure that works with cgroups.
+
+               config KERNEL_MM_OWNER
+                       bool
+                       default y if KERNEL_MEMCG
+
+               config KERNEL_MEMCG
+                       bool "Memory Resource Controller for Control Groups"
+                       default n
+                       depends on KERNEL_RESOURCE_COUNTERS
+                       help
+                         Provides a memory resource controller that manages both anonymous
+                         memory and page cache. (See Documentation/cgroups/memory.txt)
+
+                         Note that setting this option increases fixed memory overhead
+                         associated with each page of memory in the system. By this,
+                         20(40)bytes/PAGE_SIZE on 32(64)bit system will be occupied by memory
+                         usage tracking struct at boot. Total amount of this is printed out
+                         at boot.
+
+                         Only enable when you're ok with these trade offs and really
+                         sure you need the memory resource controller. Even when you enable
+                         this, you can set "cgroup_disable=memory" at your boot option to
+                         disable memory resource controller and you can avoid overheads.
+                         (and lose benefits of memory resource controller)
+
+                         This config option also selects MM_OWNER config option, which
+                         could in turn add some fork/exit overhead.
+
+               config KERNEL_MEMCG_SWAP
+                       bool "Memory Resource Controller Swap Extension"
+                       default n
+                       depends on KERNEL_MEMCG
+                       help
+                         Add swap management feature to memory resource controller. When you
+                         enable this, you can limit mem+swap usage per cgroup. In other words,
+                         when you disable this, memory resource controller has no cares to
+                         usage of swap...a process can exhaust all of the swap. This extension
+                         is useful when you want to avoid exhaustion swap but this itself
+                         adds more overheads and consumes memory for remembering information.
+                         Especially if you use 32bit system or small memory system, please
+                         be careful about enabling this. When memory resource controller
+                         is disabled by boot option, this will be automatically disabled and
+                         there will be no overhead from this. Even when you set this config=y,
+                         if boot option "swapaccount=0" is set, swap will not be accounted.
+                         Now, memory usage of swap_cgroup is 2 bytes per entry. If swap page
+                         size is 4096bytes, 512k per 1Gbytes of swap.
+
+               config KERNEL_MEMCG_SWAP_ENABLED
+                       bool "Memory Resource Controller Swap Extension enabled by default"
+                       default n
+                       depends on KERNEL_MEMCG_SWAP
+                       help
+                         Memory Resource Controller Swap Extension comes with its price in
+                         a bigger memory consumption. General purpose distribution kernels
+                         which want to enable the feature but keep it disabled by default
+                         and let the user enable it by swapaccount boot command line
+                         parameter should have this option unselected.
+                         For those who want to have the feature enabled by default should
+                         select this option (if, for some reason, they need to disable it
+                         then swapaccount=0 does the trick).
+
+
+               config KERNEL_MEMCG_KMEM
+                       bool "Memory Resource Controller Kernel Memory accounting (EXPERIMENTAL)"
+                       default n
+                       depends on KERNEL_MEMCG
+                       help
+                         The Kernel Memory extension for Memory Resource Controller can limit
+                         the amount of memory used by kernel objects in the system. Those are
+                         fundamentally different from the entities handled by the standard
+                         Memory Controller, which are page-based, and can be swapped. Users of
+                         the kmem extension can use it to guarantee that no group of processes
+                         will ever exhaust kernel resources alone.
+
+               config KERNEL_CGROUP_PERF
+                       bool "Enable perf_event per-cpu per-container group (cgroup) monitoring"
+                       default n
+                       select KERNEL_PERF_EVENTS
+                       help
+                         This option extends the per-cpu mode to restrict monitoring to
+                         threads which belong to the cgroup specified and run on the
+                         designated cpu.
+
+               menuconfig KERNEL_CGROUP_SCHED
+                       bool "Group CPU scheduler"
+                       default n
+                       help
+                         This feature lets CPU scheduler recognize task groups and control CPU
+                         bandwidth allocation to such task groups. It uses cgroups to group
+                         tasks.
+
+               if KERNEL_CGROUP_SCHED
+
+                       config KERNEL_FAIR_GROUP_SCHED
+                               bool "Group scheduling for SCHED_OTHER"
+                               default n
+
+                       config KERNEL_CFS_BANDWIDTH
+                               bool "CPU bandwidth provisioning for FAIR_GROUP_SCHED"
+                               default n
+                               depends on KERNEL_FAIR_GROUP_SCHED
+                               help
+                                 This option allows users to define CPU bandwidth rates (limits) for
+                                 tasks running within the fair group scheduler.  Groups with no limit
+                                 set are considered to be unconstrained and will run with no
+                                 restriction.
+                                 See tip/Documentation/scheduler/sched-bwc.txt for more information.
+
+                       config KERNEL_RT_GROUP_SCHED
+                               bool "Group scheduling for SCHED_RR/FIFO"
+                               default n
+                               help
+                                 This feature lets you explicitly allocate real CPU bandwidth
+                                 to task groups. If enabled, it will also make it impossible to
+                                 schedule realtime tasks for non-root users until you allocate
+                                 realtime bandwidth for them.
+
+               endif
+
+               config KERNEL_BLK_CGROUP
+                       bool "Block IO controller"
+                       default y
+                       help
+                         Generic block IO controller cgroup interface. This is the common
+                         cgroup interface which should be used by various IO controlling
+                         policies.
+
+                         Currently, CFQ IO scheduler uses it to recognize task groups and
+                         control disk bandwidth allocation (proportional time slice allocation)
+                         to such task groups. It is also used by bio throttling logic in
+                         block layer to implement upper limit in IO rates on a device.
+
+                         This option only enables generic Block IO controller infrastructure.
+                         One needs to also enable actual IO controlling logic/policy. For
+                         enabling proportional weight division of disk bandwidth in CFQ, set
+                         CONFIG_CFQ_GROUP_IOSCHED=y; for enabling throttling policy, set
+                         CONFIG_BLK_DEV_THROTTLING=y.
+
+               config KERNEL_DEBUG_BLK_CGROUP
+                       bool "Enable Block IO controller debugging"
+                       default n
+                       depends on KERNEL_BLK_CGROUP
+                       help
+                         Enable some debugging help. Currently it exports additional stat
+                         files in a cgroup which can be useful for debugging.
+
+               config KERNEL_NET_CLS_CGROUP
+                       bool "Control Group Classifier"
+                       default y
+
+               config KERNEL_NETPRIO_CGROUP
+                       bool "Network priority cgroup"
+                       default y
+
+       endif
+
+       #
+       # Namespace support symbols
+       #
+
+       config KERNEL_NAMESPACES
+               bool "Enable kernel namespaces"
+               default n
+
+       if KERNEL_NAMESPACES
+
+               config KERNEL_UTS_NS
+                       bool "UTS namespace"
+                       default y
+                       help
+                         In this namespace tasks see different info provided
+                         with the uname() system call
+
+               config KERNEL_IPC_NS
+                       bool "IPC namespace"
+                       default y
+                       help
+                         In this namespace tasks work with IPC ids which correspond to
+                         different IPC objects in different namespaces.
+
+               config KERNEL_USER_NS
+                       bool "User namespace (EXPERIMENTAL)"
+                       default y
+                       help
+                         This allows containers, i.e. vservers, to use user namespaces
+                         to provide different user info for different servers.
+
+               config KERNEL_PID_NS
+                       bool "PID Namespaces"
+                       default y
+                       help
+                         Support process id namespaces. This allows having multiple
+                         processes with the same pid as long as they are in different
+                         pid namespaces. This is a building block of containers.
+
+               config KERNEL_NET_NS
+                       bool "Network namespace"
+                       default y
+                       help
+                         Allow user space to create what appear to be multiple instances
+                         of the network stack.
+
+       endif
+
+       #
+       # LXC related symbols
+       #
+
+       config KERNEL_LXC_MISC
+               bool "Enable miscellaneous LXC related options"
+               default n
+
+       if KERNEL_LXC_MISC
+
+               config KERNEL_DEVPTS_MULTIPLE_INSTANCES
+                       bool "Support multiple instances of devpts"
+                       default y
+                       help
+                         Enable support for multiple instances of devpts filesystem.
+                         If you want to have isolated PTY namespaces (eg: in containers),
+                         say Y here. Otherwise, say N. If enabled, each mount of devpts
+                         filesystem with the '-o newinstance' option will create an
+                         independent PTY namespace.
+
+               config KERNEL_POSIX_MQUEUE
+                       bool "POSIX Message Queues"
+                       default n
+                       help
+                         POSIX variant of message queues is a part of IPC. In POSIX message
+                         queues every message has a priority which decides about succession
+                         of receiving it by a process. If you want to compile and run
+                         programs written e.g. for Solaris with use of its POSIX message
+                         queues (functions mq_*) say Y here.
+
+                         POSIX message queues are visible as a filesystem called 'mqueue'
+                         and can be mounted somewhere if you want to do filesystem
+                         operations on message queues.
+
+       endif
+
        comment "Package build options"
 
        config DEBUG
@@ -270,32 +653,38 @@ menu "Global build settings"
        config PKG_BUILD_PARALLEL
                bool
                prompt "Compile certain packages parallelized"
-               default n
+               default y
                help
                  This adds a -jX option to certain packages that are known to
-                 behave well for parallel build.
+                 behave well for parallel build. By default the package make processes
+                 use the main jobserver, in which case this option only takes effect
+                 when you add -jX to the make command.
+
+                 If you are unsure, select N.
+
+       config PKG_BUILD_USE_JOBSERVER
+               bool
+               prompt "Use top-level make jobserver for packages"
+               depends on PKG_BUILD_PARALLEL
+               default y
+               help
+                 This passes the main make process jobserver fds to package builds,
+                 enabling full parallelization across different packages
 
-                 Note that this may overcommit CPU resources depending on the
+                 Note that disabling this may overcommit CPU resources depending on the
                  -j level of the main make process, the number of package
                  submake jobs selected below and the number of actual CPUs present.
                  Example: If the main make is passed a -j4 and the submake -j
                  is also set to 4, we may end up with 16 parallel make processes
                  in the worst case.
 
-                 You get maximum build performance, if you set the package build
-                 jobs to the number of CPUs (cores) available and also start the main
-                 make process with -jX, where X is the number of CPUs (cores).
-                 However, make sure you have enough RAM available for
-                 NR_CPUS to the power of two (NR_CPUS^2) make jobs.
-
-                 If you are unsure, select N.
 
        config PKG_BUILD_JOBS
                int
                prompt "Number of package submake jobs (2-512)"
                range 2 512
                default 2
-               depends on PKG_BUILD_PARALLEL
+               depends on PKG_BUILD_PARALLEL && !PKG_BUILD_USE_JOBSERVER
                help
                  The number of jobs (-jX) to pass to packages submake.
 
@@ -303,6 +692,7 @@ menu "Global build settings"
                bool
                prompt "Parallelize the default package build rule (May break build)"
                depends on PKG_BUILD_PARALLEL
+               depends on BROKEN
                default n
                help
                  Always set the default package build rules to parallel build.
@@ -314,25 +704,12 @@ menu "Global build settings"
                  Only say Y, if you don't mind fixing broken packages.
                  Before reporting build bugs, set this to N and re-run the build.
 
-       config TOOLCHAIN_PARALLEL
-               bool
-               prompt "Parallelize the toolchain build (May break build)"
-               depends on PKG_BUILD_PARALLEL
-               default n
-               help
-                 Build the toolchain with parallel make jobs.
-                 This speeds up the toolchain build on SMP machines, but may
-                 break the build for certain toolchain versions.
-
-                 If you say Y, toolchain build might break.
-                 Before reporting build bugs, set this to N and re-run the build.
-
        comment "Stripping options"
 
        choice
                prompt "Binary stripping method"
                default USE_STRIP   if EXTERNAL_TOOLCHAIN
-               default USE_STRIP   if USE_GLIBC || USE_EGLIBC
+               default USE_STRIP   if USE_GLIBC || USE_EGLIBC || USE_MUSL
                default USE_SSTRIP
                help
                  Select the binary stripping method you wish to use.
@@ -350,9 +727,9 @@ menu "Global build settings"
 
                config USE_SSTRIP
                        bool "sstrip"
-                       depends !DEBUG
-                       depends !USE_GLIBC
-                       depends !USE_EGLIBC
+                       depends on !DEBUG
+                       depends on !USE_GLIBC
+                       depends on !USE_EGLIBC
                        help
                          This will install binaries stripped using sstrip
        endchoice
@@ -360,7 +737,7 @@ menu "Global build settings"
        config STRIP_ARGS
                string
                prompt "Strip arguments"
-               depends USE_STRIP
+               depends on USE_STRIP
                default "--strip-unneeded --remove-section=.comment --remove-section=.note" if DEBUG
                default "--strip-all"
                help
@@ -381,6 +758,20 @@ menu "Global build settings"
                  Note that this will make the system libraries incompatible with most of the packages
                  that are not selected during the build process
 
+       choice
+               prompt "Preferred standard C++ library"
+               default USE_LIBSTDCXX if USE_EGLIBC
+               default USE_UCLIBCXX
+               help
+                 Select the preferred standard C++ library for all packages that support this.
+
+               config USE_UCLIBCXX
+                       bool "uClibc++"
+
+               config USE_LIBSTDCXX
+                       bool "libstdc++"
+       endchoice
+
 endmenu
 
 menuconfig DEVEL
@@ -458,6 +849,12 @@ menuconfig DEVEL
                  in the package directory, pointing to the .git tree that you want
                  to pull the source code from
 
+       config EXTRA_OPTIMIZATION
+               string "Additional compiler options" if DEVEL
+               default "-fno-caller-saves"
+               help
+                 Extra Target-independent optimizations to use when building for the target.
+
 menuconfig TARGET_OPTIONS
        bool "Target Options"  if DEVEL
 
@@ -470,7 +867,7 @@ menuconfig TARGET_OPTIONS
        config SOFT_FLOAT
                bool "Use software floating point by default" if TARGET_OPTIONS
                default y
-               depends on (arm || armeb || powerpc || mipsel || mips) && !HAS_FPU
+               depends on (arm || armeb || powerpc || mipsel || mips || mips64el || mips64) && !HAS_FPU
                help
                  If your target CPU does not have a Floating Point Unit (FPU) or a
                  kernel FPU emulator, but you still wish to support floating point
@@ -479,6 +876,19 @@ menuconfig TARGET_OPTIONS
 
                  Most people will answer N.
 
+       config USE_MIPS16
+               bool "Build packages with MIPS16 instructions" if TARGET_OPTIONS
+               depends on HAS_MIPS16
+               depends on !GCC_VERSION_4_6
+               default y
+               help
+                 If your target CPU does support the MIPS16 instruction set
+                 and you want to use it for packages, enable this option.
+                 MIPS16 produces smaller binaries thus reducing pressure on
+                 caches and TLB.
+
+                 Most people will answer N.
+
 source "toolchain/Config.in"
 
 source "target/imagebuilder/Config.in"