# Copyright (C) 2006-2012 OpenWrt.org # # This is free software, licensed under the GNU General Public License v2. # See /LICENSE for more information. # mainmenu "OpenWrt Configuration" config MODULES bool default y config HAVE_DOT_CONFIG bool default y source "target/Config.in" menu "Target Images" menuconfig TARGET_ROOTFS_INITRAMFS bool "ramdisk" default y if USES_INITRAMFS help Embed the rootfs into the kernel (initramfs) choice prompt "Compression" default TARGET_INITRAMFS_COMPRESSION_LZMA if TARGET_ar71xx default TARGET_INITRAMFS_COMPRESSION_LZMA if TARGET_ramips default TARGET_INITRAMFS_COMPRESSION_NONE depends on TARGET_ROOTFS_INITRAMFS help Select ramdisk compression. config TARGET_INITRAMFS_COMPRESSION_NONE bool "none" config TARGET_INITRAMFS_COMPRESSION_GZIP bool "gzip" config TARGET_INITRAMFS_COMPRESSION_BZIP2 bool "bzip2" config TARGET_INITRAMFS_COMPRESSION_LZMA bool "lzma" config TARGET_INITRAMFS_COMPRESSION_LZO bool "lzo" config TARGET_INITRAMFS_COMPRESSION_XZ bool "xz" endchoice config EXTERNAL_CPIO string prompt "Use external cpio" if TARGET_ROOTFS_INITRAMFS default "" help Kernel uses specified external cpio as INITRAMFS_SOURCE comment "Root filesystem archives" config TARGET_ROOTFS_CPIOGZ bool "cpio.gz" default y if USES_CPIOGZ help Build a compressed cpio archive of the the root filesystem config TARGET_ROOTFS_TARGZ bool "tar.gz" default y if USES_TARGZ help Build a compressed tar archive of the the root filesystem comment "Root filesystem images" config TARGET_ROOTFS_EXT4FS bool "ext4" default y if USES_EXT4 depends on !TARGET_ROOTFS_INITRAMFS help Ext4 file system with some free space for uml images config TARGET_ROOTFS_ISO bool "iso" default n depends on TARGET_x86_generic depends on !TARGET_ROOTFS_INITRAMFS help Create some bootable ISO image config TARGET_ROOTFS_JFFS2 bool "jffs2" default y if USES_JFFS2 depends on !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 !TARGET_ROOTFS_INITRAMFS && USES_JFFS2_NAND help Build a jffs2 root filesystem for NAND flash config TARGET_ROOTFS_SQUASHFS bool "squashfs" default y if USES_SQUASHFS depends on !TARGET_ROOTFS_INITRAMFS help Build a squashfs-lzma root filesystem config TARGET_ROOTFS_UBIFS bool "ubifs" default y if USES_UBIFS depends on !TARGET_ROOTFS_INITRAMFS && USES_UBIFS help Build a ubifs root filesystem comment "Image Options" source "target/linux/*/image/Config.in" config TARGET_ROOTFS_PARTSIZE int "Root filesystem partition size (in MB)" depends on X86_GRUB_IMAGES || TARGET_ROOTFS_EXT4FS || TARGET_rb532 default 48 help Allows you to change the root filesystem partition size config TARGET_ROOTFS_MAXINODE int "Maximum number of inodes in root filesystem" depends on TARGET_ROOTFS_EXT4FS default 6000 help 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 endmenu menu "Global build settings" config ALL bool "Select all packages by default" default n comment "General build options" config DISPLAY_SUPPORT bool "Show packages that require graphics support (local or remote)" default n config BUILD_PATENTED default y bool "Compile with support for patented functionality" help When this option is disabled, software which provides patented functionality will not be built. In case software provides optional support for patented functionality, this optional support will get disabled for this package. config BUILD_NLS default n bool "Compile with full language support" help 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" default y help Enable shadow password support. config CLEAN_IPKG bool 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 config COLLECT_KERNEL_DEBUG bool prompt "Collect kernel debug information" 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. comment "Kernel build options" config KERNEL_DEBUG_FS bool "Compile the kernel with Debug FileSystem enabled" default y help debugfs is a virtual file system that kernel developers use to put 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 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_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 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 config KERNEL_EARLY_PRINTK bool "Compile the kernel with early printk" default n depends on arm select KERNEL_DEBUG_KERNEL select KERNEL_DEBUG_LL if arm help Compile the kernel with early printk support. This is only useful for debugging purposes to send messages over the serial console in early boot. Enable this to debug early boot problems. config KERNEL_AIO 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 bool "Enable kernel lock checking" select KERNEL_DEBUG_KERNEL default n config KERNEL_PRINTK_TIME bool "Enable printk timestamps" default y config KERNEL_RELAY bool # # 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_PERF_EVENTS bool default y if KERNEL_CGROUP_PERF config KERNEL_CGROUP_PERF bool "Enable perf_event per-cpu per-container group (cgroup) monitoring" default n 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 bool prompt "Compile packages with debugging info" default n help Adds -g3 to the CFLAGS config IPV6 bool prompt "Enable IPv6 support in packages" default y help Enable IPV6 support in packages (passes --enable-ipv6 to configure scripts). config PKG_BUILD_PARALLEL bool prompt "Compile certain packages parallelized" default y help This adds a -jX option to certain packages that are known to 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 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. config PKG_BUILD_JOBS int prompt "Number of package submake jobs (2-512)" range 2 512 default 2 depends on PKG_BUILD_PARALLEL && !PKG_BUILD_USE_JOBSERVER help The number of jobs (-jX) to pass to packages submake. config PKG_DEFAULT_PARALLEL 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. WARNING: This may break build or kill your cat, as it builds packages with multiple jobs that are probably not tested in a parallel build environment. Only say Y, if you don't mind fixing broken packages. 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 || USE_MUSL default USE_SSTRIP help Select the binary stripping method you wish to use. config NO_STRIP bool "none" help This will install unstripped binaries (useful for native compiling/debugging) config USE_STRIP bool "strip" help This will install binaries stripped using strip from binutils config USE_SSTRIP bool "sstrip" depends on !DEBUG depends on !USE_GLIBC depends on !USE_EGLIBC help This will install binaries stripped using sstrip endchoice config STRIP_ARGS string prompt "Strip arguments" depends on USE_STRIP default "--strip-unneeded --remove-section=.comment --remove-section=.note" if DEBUG default "--strip-all" help Specifies arguments passed to the strip command when stripping binaries config STRIP_KERNEL_EXPORTS bool "Strip unnecessary exports from the kernel image" help Reduces kernel size by stripping unused kernel exports from the kernel image Note that this might make the kernel incompatible with any kernel modules that were not selected at the time the kernel image was created config USE_MKLIBS bool "Strip unnecessary functions from libraries" help Reduces libraries to only those functions that are necessary for using all selected packages (including those selected as <M>) 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 bool "Advanced configuration options (for developers)" default n config BROKEN bool "Show broken platforms / packages" if DEVEL default n config DOWNLOAD_FOLDER string "Download folder" if DEVEL default "" config LOCALMIRROR string "Local mirror for source packages" if DEVEL default "" config AUTOREBUILD bool "Automatic rebuild of packages" if DEVEL default y help Automatically rebuild packages when their files change config BUILD_SUFFIX string "Build suffix to append to the BUILD_DIR variable" if DEVEL default "" help Build suffix to append to the BUILD_DIR variable, i.e: build_dir_suffix config TARGET_ROOTFS_DIR string "Override the default TARGET_ROOTFS_DIR variable" if DEVEL default "" help Override the default TARGET_ROOTFS_DIR variable content $(BUILD_DIR) with custom path. Use this option to re-define the location of the target root file system directory. config CCACHE bool "Use ccache" if DEVEL default n help Compiler cache; see http://ccache.samba.org/ config EXTERNAL_KERNEL_TREE string "Use external kernel tree" if DEVEL default "" config KERNEL_GIT_CLONE_URI string "Enter git repository to clone" if DEVEL default "" help Enter the full git repository path i.e.: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git This will create a git clone of the kernel in your build directory. config KERNEL_GIT_LOCAL_REPOSITORY string "Enter path to local reference repository" if DEVEL default "" help Enter a full pathname to a local reference git repository. In this instance, the --refererence option of git clone will be used thus creating a quick local clone of your repo. config BUILD_LOG bool "Enable log files during build process" if DEVEL help If enabled log files will be written to the ./log directory config SRC_TREE_OVERRIDE bool "Enable package source tree override" if DEVEL help If enabled, you can force a package to use a git tree as source code instead of the normal tarball. Create a symlink 'git-src' in the package directory, pointing to the .git tree that you want to pull the source code from menuconfig TARGET_OPTIONS bool "Target Options" if DEVEL config TARGET_OPTIMIZATION string "Target Optimizations" if TARGET_OPTIONS default DEFAULT_TARGET_OPTIMIZATION help Optimizations to use when building for the target host. config SOFT_FLOAT bool "Use software floating point by default" if TARGET_OPTIONS default y 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 functions, then everything will need to be compiled with soft floating point support (-msoft-float). Most people will answer N. config USE_MIPS16 bool "Build packages with MIPS16 instructions" if TARGET_OPTIONS depends on HAS_MIPS16 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" source "target/sdk/Config.in" source "target/toolchain/Config.in" source "tmp/.config-package.in"