Config.in

   1 # Copyright (C) 2006-2012 OpenWrt.org
   2 #
   3 # This is free software, licensed under the GNU General Public License v2.
   4 # See /LICENSE for more information.
   5 #
   6
   7 mainmenu "OpenWrt Configuration"
   8
   9 config MODULES
  10         bool
  11         default y
  12
  13 config HAVE_DOT_CONFIG
  14         bool
  15         default y
  16
  17 source "target/Config.in"
  18
  19 menu "Target Images"
  20
  21         menuconfig TARGET_ROOTFS_INITRAMFS
  22                 bool "ramdisk"
  23                 default y if USES_INITRAMFS
  24                 help
  25                   Embed the rootfs into the kernel (initramfs)
  26
  27                 choice
  28                         prompt "Compression"
  29                         default TARGET_INITRAMFS_COMPRESSION_LZMA if TARGET_ar71xx
  30                         default TARGET_INITRAMFS_COMPRESSION_LZMA if TARGET_ramips
  31                         default TARGET_INITRAMFS_COMPRESSION_NONE
  32                         depends on TARGET_ROOTFS_INITRAMFS
  33                         help
  34                           Select ramdisk compression.
  35
  36                         config TARGET_INITRAMFS_COMPRESSION_NONE
  37                                 bool "none"
  38
  39                         config TARGET_INITRAMFS_COMPRESSION_GZIP
  40                                 bool "gzip"
  41
  42                         config TARGET_INITRAMFS_COMPRESSION_BZIP2
  43                                 bool "bzip2"
  44
  45                         config TARGET_INITRAMFS_COMPRESSION_LZMA
  46                                 bool "lzma"
  47
  48                         config TARGET_INITRAMFS_COMPRESSION_LZO
  49                                 bool "lzo"
  50
  51                         config TARGET_INITRAMFS_COMPRESSION_XZ
  52                                 bool "xz"
  53                 endchoice
  54
  55                 config EXTERNAL_CPIO
  56                         string
  57                         prompt "Use external cpio" if TARGET_ROOTFS_INITRAMFS
  58                         default ""
  59                         help
  60                           Kernel uses specified external cpio as INITRAMFS_SOURCE
  61
  62         comment "Root filesystem archives"
  63
  64         config TARGET_ROOTFS_CPIOGZ
  65                 bool "cpio.gz"
  66                 default y if USES_CPIOGZ
  67                 help
  68                   Build a compressed cpio archive of the the root filesystem
  69
  70         config TARGET_ROOTFS_TARGZ
  71                 bool "tar.gz"
  72                 default y if USES_TARGZ
  73                 help
  74                   Build a compressed tar archive of the the root filesystem
  75
  76         comment "Root filesystem images"
  77
  78         config TARGET_ROOTFS_EXT4FS
  79                 bool "ext4"
  80                 default y if USES_EXT4
  81                 depends on !TARGET_ROOTFS_INITRAMFS
  82                 help
  83                   Ext4 file system with some free space for uml images
  84
  85         config TARGET_ROOTFS_ISO
  86                 bool "iso"
  87                 default n
  88                 depends on TARGET_x86_generic
  89                 depends on !TARGET_ROOTFS_INITRAMFS
  90                 help
  91                   Create some bootable ISO image
  92
  93         config TARGET_ROOTFS_JFFS2
  94                 bool "jffs2"
  95                 default y if USES_JFFS2
  96                 depends on !TARGET_ROOTFS_INITRAMFS
  97                 help
  98                   Build a jffs2 root filesystem
  99
 100         config TARGET_ROOTFS_SQUASHFS
 101                 bool "squashfs"
 102                 default y if USES_SQUASHFS
 103                 depends on !TARGET_ROOTFS_INITRAMFS
 104                 help
 105                   Build a squashfs-lzma root filesystem
 106
 107         config TARGET_ROOTFS_UBIFS
 108                 bool "ubifs"
 109                 default y if USES_UBIFS
 110                 depends on !TARGET_ROOTFS_INITRAMFS && USES_UBIFS
 111                 help
 112                   Build a ubifs root filesystem
 113
 114         comment "Image Options"
 115
 116         source "target/linux/*/image/Config.in"
 117
 118         config TARGET_ROOTFS_PARTSIZE
 119                 int "Root filesystem partition size (in MB)"
 120                 depends on X86_GRUB_IMAGES || TARGET_ROOTFS_EXT4FS || TARGET_rb532
 121                 default 48
 122                 help
 123                   Allows you to change the root filesystem partition size
 124
 125         config TARGET_ROOTFS_MAXINODE
 126                 int "Maximum number of inodes in root filesystem"
 127                 depends on TARGET_ROOTFS_EXT4FS
 128                 default 6000
 129                 help
 130                   Allows you to change the maximum number of inodes in the root filesystem
 131
 132         config TARGET_ROOTFS_RESERVED_PCT
 133                 int "Percentage of reserved blocks in root filesystem"
 134                 depends on TARGET_ROOTFS_EXT4FS
 135                 default 0
 136                 help
 137                   Allows you to change the percentage of reserved blocks in the root filesystem
 138
 139 endmenu
 140
 141 menu "Global build settings"
 142
 143         config ALL
 144                 bool "Select all packages by default"
 145                 default n
 146
 147         comment "General build options"
 148
 149         config DISPLAY_SUPPORT
 150                 bool "Show packages that require graphics support (local or remote)"
 151                 default n
 152
 153         config BUILD_PATENTED
 154                 default y
 155                 bool "Compile with support for patented functionality"
 156                 help
 157                   When this option is disabled, software which provides patented functionality will not be built.
 158                   In case software provides optional support for patented functionality,
 159                   this optional support will get disabled for this package.
 160
 161         config BUILD_NLS
 162                 default n
 163                 bool "Compile with full language support"
 164                 help
 165                   When this option is enabled, packages are built with the full versions of iconv and GNU gettext
 166                   instead of the default OpenWrt stubs. If uClibc is used, it is also built with locale support.
 167
 168         config BUILD_STATIC_TOOLS
 169                 default n
 170                 bool "Attempt to link host utilities statically"
 171                 help
 172                   Linking host utilities like sed or firmware-utils statically increases the portability of the
 173                   generated ImageBuilder and SDK tarballs, however it may fail on some Linux distributions.
 174
 175         config SHADOW_PASSWORDS
 176                 bool
 177                 prompt "Enable shadow password support"
 178                 default y
 179                 help
 180                   Enable shadow password support.
 181
 182         config CLEAN_IPKG
 183                 bool
 184                 prompt "Remove ipkg/opkg status data files in final images"
 185                 default n
 186                 help
 187                   This removes all ipkg/opkg status data files from the target directory before building the root fs
 188
 189         config COLLECT_KERNEL_DEBUG
 190                 bool
 191                 prompt "Collect kernel debug information"
 192                 select KERNEL_DEBUG_INFO
 193                 default n
 194                 help
 195                   This collects debugging symbols from the kernel and all compiled modules.
 196                   Useful for release builds, so that kernel issues can be debugged offline later.
 197
 198         comment "Kernel build options"
 199
 200         config KERNEL_DEBUG_FS
 201                 bool "Compile the kernel with Debug FileSystem enabled"
 202                 default y
 203                 help
 204                   debugfs is a virtual file system that kernel developers use to put
 205                   debugging files into. Enable this option to be able to read and
 206                   write to these files.
 207
 208         config KERNEL_PERF_EVENTS
 209                 bool
 210                 default n
 211
 212         config KERNEL_PROFILING
 213                 bool "Compile the kernel with profiling enabled"
 214                 default n
 215                 select KERNEL_PERF_EVENTS
 216                 help
 217                   Enable the extended profiling support mechanisms used by profilers such
 218                   as OProfile.
 219
 220         config KERNEL_KALLSYMS
 221                 bool "Compile the kernel with symbol table information"
 222                 default y
 223                 help
 224                   This will give you more information in stack traces from kernel oopses
 225
 226         config KERNEL_FTRACE
 227                 bool "Compile the kernel with tracing support"
 228                 default n
 229
 230         config KERNEL_ENABLE_DEFAULT_TRACERS
 231                 bool "Trace process context switches and events"
 232                 depends on KERNEL_FTRACE
 233                 default n
 234
 235         config KERNEL_DEBUG_KERNEL
 236                 bool
 237                 default n
 238
 239         config KERNEL_DEBUG_INFO
 240                 bool "Compile the kernel with debug information"
 241                 default y
 242                 select KERNEL_DEBUG_KERNEL
 243                 help
 244                   This will compile your kernel and modules with debug information.
 245
 246         config KERNEL_DEBUG_LL_UART_NONE
 247                 bool
 248                 default n
 249                 depends on arm
 250
 251         config KERNEL_DEBUG_LL
 252                 bool
 253                 default n
 254                 depends on arm
 255                 select KERNEL_DEBUG_LL_UART_NONE
 256                 help
 257                   ARM low level debugging
 258
 259         config KERNEL_EARLY_PRINTK
 260                 bool "Compile the kernel with early printk"
 261                 default n
 262                 depends on arm
 263                 select KERNEL_DEBUG_KERNEL
 264                 select KERNEL_DEBUG_LL if arm
 265                 help
 266                   Compile the kernel with early printk support.
 267                   This is only useful for debugging purposes to send messages
 268                   over the serial console in early boot.
 269                   Enable this to debug early boot problems.
 270
 271         config KERNEL_AIO
 272                 bool "Compile the kernel with asynchronous IO support"
 273                 default n
 274
 275         config KERNEL_DIRECT_IO
 276                 bool "Compile the kernel with direct IO support"
 277                 default n
 278
 279         config KERNEL_MAGIC_SYSRQ
 280                 bool "Compile the kernel with SysRq support"
 281                 default y
 282
 283         config KERNEL_COREDUMP
 284                 bool
 285
 286         config KERNEL_ELF_CORE
 287                 bool "Enable process core dump support"
 288                 select KERNEL_COREDUMP
 289                 default y
 290
 291         config KERNEL_PROVE_LOCKING
 292                 bool "Enable kernel lock checking"
 293                 select KERNEL_DEBUG_KERNEL
 294                 default n
 295
 296         config KERNEL_PRINTK_TIME
 297                 bool "Enable printk timestamps"
 298                 default y
 299
 300         config KERNEL_RELAY
 301                 bool
 302
 303         #
 304         # CGROUP support symbols
 305         #
 306
 307         config KERNEL_CGROUPS
 308                 bool "Enable kernel cgroups"
 309                 default n
 310
 311         if KERNEL_CGROUPS
 312
 313                 config KERNEL_CGROUP_DEBUG
 314                         bool "Example debug cgroup subsystem"
 315                         default n
 316                         help
 317                           This option enables a simple cgroup subsystem that
 318                           exports useful debugging information about the cgroups
 319                           framework.
 320
 321                 config KERNEL_FREEZER
 322                         bool
 323                         default y if KERNEL_CGROUP_FREEZER
 324
 325                 config KERNEL_CGROUP_FREEZER
 326                         bool "Freezer cgroup subsystem"
 327                         default n
 328                         help
 329                           Provides a way to freeze and unfreeze all tasks in a
 330                           cgroup.
 331
 332                 config KERNEL_CGROUP_DEVICE
 333                         bool "Device controller for cgroups"
 334                         default y
 335                         help
 336                           Provides a cgroup implementing whitelists for devices which
 337                           a process in the cgroup can mknod or open.
 338
 339                 config KERNEL_CPUSETS
 340                         bool "Cpuset support"
 341                         default n
 342                         help
 343                           This option will let you create and manage CPUSETs which
 344                           allow dynamically partitioning a system into sets of CPUs and
 345                           Memory Nodes and assigning tasks to run only within those sets.
 346                           This is primarily useful on large SMP or NUMA systems.
 347
 348                 config KERNEL_PROC_PID_CPUSET
 349                         bool "Include legacy /proc/<pid>/cpuset file"
 350                         default n
 351                         depends on KERNEL_CPUSETS
 352
 353                 config KERNEL_CGROUP_CPUACCT
 354                         bool "Simple CPU accounting cgroup subsystem"
 355                         default n
 356                         help
 357                           Provides a simple Resource Controller for monitoring the
 358                           total CPU consumed by the tasks in a cgroup.
 359
 360                 config KERNEL_RESOURCE_COUNTERS
 361                         bool "Resource counters"
 362                         default n
 363                         help
 364                           This option enables controller independent resource accounting
 365                           infrastructure that works with cgroups.
 366
 367                 config KERNEL_MM_OWNER
 368                         bool
 369                         default y if KERNEL_MEMCG
 370
 371                 config KERNEL_MEMCG
 372                         bool "Memory Resource Controller for Control Groups"
 373                         default n
 374                         depends on KERNEL_RESOURCE_COUNTERS
 375                         help
 376                           Provides a memory resource controller that manages both anonymous
 377                           memory and page cache. (See Documentation/cgroups/memory.txt)
 378
 379                           Note that setting this option increases fixed memory overhead
 380                           associated with each page of memory in the system. By this,
 381                           20(40)bytes/PAGE_SIZE on 32(64)bit system will be occupied by memory
 382                           usage tracking struct at boot. Total amount of this is printed out
 383                           at boot.
 384
 385                           Only enable when you're ok with these trade offs and really
 386                           sure you need the memory resource controller. Even when you enable
 387                           this, you can set "cgroup_disable=memory" at your boot option to
 388                           disable memory resource controller and you can avoid overheads.
 389                           (and lose benefits of memory resource controller)
 390
 391                           This config option also selects MM_OWNER config option, which
 392                           could in turn add some fork/exit overhead.
 393
 394                 config KERNEL_MEMCG_SWAP
 395                         bool "Memory Resource Controller Swap Extension"
 396                         default n
 397                         depends on KERNEL_MEMCG
 398                         help
 399                           Add swap management feature to memory resource controller. When you
 400                           enable this, you can limit mem+swap usage per cgroup. In other words,
 401                           when you disable this, memory resource controller has no cares to
 402                           usage of swap...a process can exhaust all of the swap. This extension
 403                           is useful when you want to avoid exhaustion swap but this itself
 404                           adds more overheads and consumes memory for remembering information.
 405                           Especially if you use 32bit system or small memory system, please
 406                           be careful about enabling this. When memory resource controller
 407                           is disabled by boot option, this will be automatically disabled and
 408                           there will be no overhead from this. Even when you set this config=y,
 409                           if boot option "swapaccount=0" is set, swap will not be accounted.
 410                           Now, memory usage of swap_cgroup is 2 bytes per entry. If swap page
 411                           size is 4096bytes, 512k per 1Gbytes of swap.
 412
 413                 config KERNEL_MEMCG_SWAP_ENABLED
 414                         bool "Memory Resource Controller Swap Extension enabled by default"
 415                         default n
 416                         depends on KERNEL_MEMCG_SWAP
 417                         help
 418                           Memory Resource Controller Swap Extension comes with its price in
 419                           a bigger memory consumption. General purpose distribution kernels
 420                           which want to enable the feature but keep it disabled by default
 421                           and let the user enable it by swapaccount boot command line
 422                           parameter should have this option unselected.
 423                           For those who want to have the feature enabled by default should
 424                           select this option (if, for some reason, they need to disable it
 425                           then swapaccount=0 does the trick).
 426
 427
 428                 config KERNEL_MEMCG_KMEM
 429                         bool "Memory Resource Controller Kernel Memory accounting (EXPERIMENTAL)"
 430                         default n
 431                         depends on KERNEL_MEMCG
 432                         help
 433                           The Kernel Memory extension for Memory Resource Controller can limit
 434                           the amount of memory used by kernel objects in the system. Those are
 435                           fundamentally different from the entities handled by the standard
 436                           Memory Controller, which are page-based, and can be swapped. Users of
 437                           the kmem extension can use it to guarantee that no group of processes
 438                           will ever exhaust kernel resources alone.
 439
 440                 config KERNEL_PERF_EVENTS
 441                         bool
 442                         default y if KERNEL_CGROUP_PERF
 443
 444                 config KERNEL_CGROUP_PERF
 445                         bool "Enable perf_event per-cpu per-container group (cgroup) monitoring"
 446                         default n
 447                         help
 448                           This option extends the per-cpu mode to restrict monitoring to
 449                           threads which belong to the cgroup specified and run on the
 450                           designated cpu.
 451
 452                 menuconfig KERNEL_CGROUP_SCHED
 453                         bool "Group CPU scheduler"
 454                         default n
 455                         help
 456                           This feature lets CPU scheduler recognize task groups and control CPU
 457                           bandwidth allocation to such task groups. It uses cgroups to group
 458                           tasks.
 459
 460                 if KERNEL_CGROUP_SCHED
 461
 462                         config KERNEL_FAIR_GROUP_SCHED
 463                                 bool "Group scheduling for SCHED_OTHER"
 464                                 default n
 465
 466                         config KERNEL_CFS_BANDWIDTH
 467                                 bool "CPU bandwidth provisioning for FAIR_GROUP_SCHED"
 468                                 default n
 469                                 depends on KERNEL_FAIR_GROUP_SCHED
 470                                 help
 471                                   This option allows users to define CPU bandwidth rates (limits) for
 472                                   tasks running within the fair group scheduler.  Groups with no limit
 473                                   set are considered to be unconstrained and will run with no
 474                                   restriction.
 475                                   See tip/Documentation/scheduler/sched-bwc.txt for more information.
 476
 477                         config KERNEL_RT_GROUP_SCHED
 478                                 bool "Group scheduling for SCHED_RR/FIFO"
 479                                 default n
 480                                 help
 481                                   This feature lets you explicitly allocate real CPU bandwidth
 482                                   to task groups. If enabled, it will also make it impossible to
 483                                   schedule realtime tasks for non-root users until you allocate
 484                                   realtime bandwidth for them.
 485
 486                 endif
 487
 488                 config KERNEL_BLK_CGROUP
 489                         bool "Block IO controller"
 490                         default y
 491                         help
 492                           Generic block IO controller cgroup interface. This is the common
 493                           cgroup interface which should be used by various IO controlling
 494                           policies.
 495
 496                           Currently, CFQ IO scheduler uses it to recognize task groups and
 497                           control disk bandwidth allocation (proportional time slice allocation)
 498                           to such task groups. It is also used by bio throttling logic in
 499                           block layer to implement upper limit in IO rates on a device.
 500
 501                           This option only enables generic Block IO controller infrastructure.
 502                           One needs to also enable actual IO controlling logic/policy. For
 503                           enabling proportional weight division of disk bandwidth in CFQ, set
 504                           CONFIG_CFQ_GROUP_IOSCHED=y; for enabling throttling policy, set
 505                           CONFIG_BLK_DEV_THROTTLING=y.
 506
 507                 config KERNEL_DEBUG_BLK_CGROUP
 508                         bool "Enable Block IO controller debugging"
 509                         default n
 510                         depends on KERNEL_BLK_CGROUP
 511                         help
 512                           Enable some debugging help. Currently it exports additional stat
 513                           files in a cgroup which can be useful for debugging.
 514
 515                 config KERNEL_NET_CLS_CGROUP
 516                         bool "Control Group Classifier"
 517                         default y
 518
 519                 config KERNEL_NETPRIO_CGROUP
 520                         bool "Network priority cgroup"
 521                         default y
 522
 523         endif
 524
 525         #
 526         # Namespace support symbols
 527         #
 528
 529         config KERNEL_NAMESPACES
 530                 bool "Enable kernel namespaces"
 531                 default n
 532
 533         if KERNEL_NAMESPACES
 534
 535                 config KERNEL_UTS_NS
 536                         bool "UTS namespace"
 537                         default y
 538                         help
 539                           In this namespace tasks see different info provided
 540                           with the uname() system call
 541
 542                 config KERNEL_IPC_NS
 543                         bool "IPC namespace"
 544                         default y
 545                         help
 546                           In this namespace tasks work with IPC ids which correspond to
 547                           different IPC objects in different namespaces.
 548
 549                 config KERNEL_USER_NS
 550                         bool "User namespace (EXPERIMENTAL)"
 551                         default y
 552                         help
 553                           This allows containers, i.e. vservers, to use user namespaces
 554                           to provide different user info for different servers.
 555
 556                 config KERNEL_PID_NS
 557                         bool "PID Namespaces"
 558                         default y
 559                         help
 560                           Support process id namespaces. This allows having multiple
 561                           processes with the same pid as long as they are in different
 562                           pid namespaces. This is a building block of containers.
 563
 564                 config KERNEL_NET_NS
 565                         bool "Network namespace"
 566                         default y
 567                         help
 568                           Allow user space to create what appear to be multiple instances
 569                           of the network stack.
 570
 571                 config KERNEL_DEVPTS_MULTIPLE_INSTANCES
 572                         bool "Support multiple instances of devpts"
 573                         default y
 574                         help
 575                           Enable support for multiple instances of devpts filesystem.
 576                           If you want to have isolated PTY namespaces (eg: in containers),
 577                           say Y here. Otherwise, say N. If enabled, each mount of devpts
 578                           filesystem with the '-o newinstance' option will create an
 579                           independent PTY namespace.
 580
 581         endif
 582
 583         comment "Package build options"
 584
 585         config DEBUG
 586                 bool
 587                 prompt "Compile packages with debugging info"
 588                 default n
 589                 help
 590                   Adds -g3 to the CFLAGS
 591
 592         config IPV6
 593                 bool
 594                 prompt "Enable IPv6 support in packages"
 595                 default y
 596                 help
 597                   Enable IPV6 support in packages (passes --enable-ipv6 to configure scripts).
 598
 599         config PKG_BUILD_PARALLEL
 600                 bool
 601                 prompt "Compile certain packages parallelized"
 602                 default y
 603                 help
 604                   This adds a -jX option to certain packages that are known to
 605                   behave well for parallel build. By default the package make processes
 606                   use the main jobserver, in which case this option only takes effect
 607                   when you add -jX to the make command.
 608
 609                   If you are unsure, select N.
 610
 611         config PKG_BUILD_USE_JOBSERVER
 612                 bool
 613                 prompt "Use top-level make jobserver for packages"
 614                 depends on PKG_BUILD_PARALLEL
 615                 default y
 616                 help
 617                   This passes the main make process jobserver fds to package builds,
 618                   enabling full parallelization across different packages
 619
 620                   Note that disabling this may overcommit CPU resources depending on the
 621                   -j level of the main make process, the number of package
 622                   submake jobs selected below and the number of actual CPUs present.
 623                   Example: If the main make is passed a -j4 and the submake -j
 624                   is also set to 4, we may end up with 16 parallel make processes
 625                   in the worst case.
 626
 627
 628         config PKG_BUILD_JOBS
 629                 int
 630                 prompt "Number of package submake jobs (2-512)"
 631                 range 2 512
 632                 default 2
 633                 depends on PKG_BUILD_PARALLEL && !PKG_BUILD_USE_JOBSERVER
 634                 help
 635                   The number of jobs (-jX) to pass to packages submake.
 636
 637         config PKG_DEFAULT_PARALLEL
 638                 bool
 639                 prompt "Parallelize the default package build rule (May break build)"
 640                 depends on PKG_BUILD_PARALLEL
 641                 depends on BROKEN
 642                 default n
 643                 help
 644                   Always set the default package build rules to parallel build.
 645
 646                   WARNING: This may break build or kill your cat, as it builds
 647                   packages with multiple jobs that are probably not tested in
 648                   a parallel build environment.
 649
 650                   Only say Y, if you don't mind fixing broken packages.
 651                   Before reporting build bugs, set this to N and re-run the build.
 652
 653         comment "Stripping options"
 654
 655         choice
 656                 prompt "Binary stripping method"
 657                 default USE_STRIP   if EXTERNAL_TOOLCHAIN
 658                 default USE_STRIP   if USE_GLIBC || USE_EGLIBC || USE_MUSL
 659                 default USE_SSTRIP
 660                 help
 661                   Select the binary stripping method you wish to use.
 662
 663                 config NO_STRIP
 664                         bool "none"
 665                         help
 666                           This will install unstripped binaries (useful for native compiling/debugging)
 667
 668                 config USE_STRIP
 669                         bool "strip"
 670                         help
 671                           This will install binaries stripped using strip from binutils
 672
 673
 674                 config USE_SSTRIP
 675                         bool "sstrip"
 676                         depends on !DEBUG
 677                         depends on !USE_GLIBC
 678                         depends on !USE_EGLIBC
 679                         help
 680                           This will install binaries stripped using sstrip
 681         endchoice
 682
 683         config STRIP_ARGS
 684                 string
 685                 prompt "Strip arguments"
 686                 depends on USE_STRIP
 687                 default "--strip-unneeded --remove-section=.comment --remove-section=.note" if DEBUG
 688                 default "--strip-all"
 689                 help
 690                   Specifies arguments passed to the strip command when stripping binaries
 691
 692         config STRIP_KERNEL_EXPORTS
 693                 bool "Strip unnecessary exports from the kernel image"
 694                 help
 695                   Reduces kernel size by stripping unused kernel exports from the kernel image
 696                   Note that this might make the kernel incompatible with any kernel modules that
 697                   were not selected at the time the kernel image was created
 698
 699         config USE_MKLIBS
 700                 bool "Strip unnecessary functions from libraries"
 701                 help
 702                   Reduces libraries to only those functions that are necessary for using all
 703                   selected packages (including those selected as <M>)
 704                   Note that this will make the system libraries incompatible with most of the packages
 705                   that are not selected during the build process
 706
 707         choice
 708                 prompt "Preferred standard C++ library"
 709                 default USE_LIBSTDCXX if USE_EGLIBC
 710                 default USE_UCLIBCXX
 711                 help
 712                   Select the preferred standard C++ library for all packages that support this.
 713
 714                 config USE_UCLIBCXX
 715                         bool "uClibc++"
 716
 717                 config USE_LIBSTDCXX
 718                         bool "libstdc++"
 719         endchoice
 720
 721 endmenu
 722
 723 menuconfig DEVEL
 724         bool "Advanced configuration options (for developers)"
 725         default n
 726
 727         config BROKEN
 728                 bool "Show broken platforms / packages" if DEVEL
 729                 default n
 730
 731         config DOWNLOAD_FOLDER
 732                 string "Download folder" if DEVEL
 733                 default ""
 734
 735         config LOCALMIRROR
 736                 string "Local mirror for source packages" if DEVEL
 737                 default ""
 738
 739         config AUTOREBUILD
 740                 bool "Automatic rebuild of packages" if DEVEL
 741                 default y
 742                 help
 743                   Automatically rebuild packages when their files change
 744
 745         config BUILD_SUFFIX
 746                 string "Build suffix to append to the BUILD_DIR variable" if DEVEL
 747                 default ""
 748                 help
 749                   Build suffix to append to the BUILD_DIR variable, i.e: build_dir_suffix
 750
 751         config TARGET_ROOTFS_DIR
 752                 string "Override the default TARGET_ROOTFS_DIR variable" if DEVEL
 753                 default ""
 754                 help
 755                   Override the default TARGET_ROOTFS_DIR variable content $(BUILD_DIR) with custom path.
 756                   Use this option to re-define the location of the target root file system directory.
 757
 758         config CCACHE
 759                 bool "Use ccache" if DEVEL
 760                 default n
 761                 help
 762                   Compiler cache; see http://ccache.samba.org/
 763
 764         config EXTERNAL_KERNEL_TREE
 765                 string "Use external kernel tree" if DEVEL
 766                 default ""
 767
 768         config KERNEL_GIT_CLONE_URI
 769                 string "Enter git repository to clone" if DEVEL
 770                 default ""
 771                 help
 772                   Enter the full git repository path i.e.:
 773                   git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
 774                   This will create a git clone of the kernel in your build
 775                   directory.
 776
 777         config KERNEL_GIT_LOCAL_REPOSITORY
 778                 string "Enter path to local reference repository" if DEVEL
 779                 default ""
 780                 help
 781                   Enter a full pathname to a local reference git repository.
 782                   In this instance, the --refererence option of git clone will
 783                   be used thus creating a quick local clone of your repo.
 784
 785         config BUILD_LOG
 786                 bool "Enable log files during build process" if DEVEL
 787                 help
 788                   If enabled log files will be written to the ./log directory
 789
 790         config SRC_TREE_OVERRIDE
 791                 bool "Enable package source tree override" if DEVEL
 792                 help
 793                   If enabled, you can force a package to use a git tree as source
 794                   code instead of the normal tarball. Create a symlink 'git-src'
 795                   in the package directory, pointing to the .git tree that you want
 796                   to pull the source code from
 797
 798 menuconfig TARGET_OPTIONS
 799         bool "Target Options"  if DEVEL
 800
 801         config TARGET_OPTIMIZATION
 802                 string "Target Optimizations" if TARGET_OPTIONS
 803                 default DEFAULT_TARGET_OPTIMIZATION
 804                 help
 805                   Optimizations to use when building for the target host.
 806
 807         config SOFT_FLOAT
 808                 bool "Use software floating point by default" if TARGET_OPTIONS
 809                 default y
 810                 depends on (arm || armeb || powerpc || mipsel || mips || mips64el || mips64) && !HAS_FPU
 811                 help
 812                   If your target CPU does not have a Floating Point Unit (FPU) or a
 813                   kernel FPU emulator, but you still wish to support floating point
 814                   functions, then everything will need to be compiled with soft floating
 815                   point support (-msoft-float).
 816
 817                   Most people will answer N.
 818
 819         config USE_MIPS16
 820                 bool "Build packages with MIPS16 instructions" if TARGET_OPTIONS
 821                 depends on HAS_MIPS16
 822                 help
 823                   If your target CPU does support the MIPS16 instruction set
 824                   and you want to use it for packages, enable this option.
 825                   MIPS16 produces smaller binaries thus reducing pressure on
 826                   caches and TLB.
 827
 828                   Most people will answer N.
 829
 830 source "toolchain/Config.in"
 831
 832 source "target/imagebuilder/Config.in"
 833 source "target/sdk/Config.in"
 834 source "target/toolchain/Config.in"
 835
 836 source "tmp/.config-package.in"