config/Config-build.in

   1 # SPDX-License-Identifier: GPL-2.0-only
   2 #
   3 # Copyright (C) 2006-2013 OpenWrt.org
   4 # Copyright (C) 2016 LEDE Project
   5
   6 config EXPERIMENTAL
   7         bool "Enable experimental features by default"
   8         default n
   9         help
  10           Set this option to build with latest bleeding edge features
  11           which may or may not work as expected.
  12           If you would like to help the development of OpenWrt, you are
  13           encouraged to set this option and provide feedback (both
  14           positive and negative). But do so only if you know how to
  15           recover your device in case of flashing potentially non-working
  16           firmware.
  17
  18           If you plan to use this build in production, say NO!
  19
  20 menu "Global build settings"
  21
  22         config JSON_OVERVIEW_IMAGE_INFO
  23                 bool "Create JSON info file overview per target"
  24                 default y
  25                 help
  26                   Create a JSON info file called profiles.json in the target
  27                   directory containing machine readable list of built profiles
  28                   and resulting images.
  29
  30         config ALL_NONSHARED
  31                 bool "Select all target specific packages by default"
  32                 select ALL_KMODS
  33                 default BUILDBOT
  34
  35         config ALL_KMODS
  36                 bool "Select all kernel module packages by default"
  37
  38         config ALL
  39                 bool "Select all userspace packages by default"
  40                 select ALL_KMODS
  41                 select ALL_NONSHARED
  42
  43         config BUILDBOT
  44                 bool "Set build defaults for automatic builds (e.g. via buildbot)"
  45                 default n
  46                 help
  47                   This option changes several defaults to be more suitable for
  48                   automatic builds. This includes the following changes:
  49                   - Deleting build directories after compiling (to save space)
  50                   - Enabling per-device rootfs support
  51                   ...
  52
  53         config SIGNED_PACKAGES
  54                 bool "Cryptographically signed package lists"
  55                 default y
  56
  57         config SIGNATURE_CHECK
  58                 bool "Enable signature checking in opkg"
  59                 default SIGNED_PACKAGES
  60
  61         config DOWNLOAD_CHECK_CERTIFICATE
  62                 bool "Enable TLS certificate verification during package download"
  63                 default y
  64
  65         comment "General build options"
  66
  67         config TESTING_KERNEL
  68                 bool "Use the testing kernel version"
  69                 depends on HAS_TESTING_KERNEL
  70                 default EXPERIMENTAL
  71                 help
  72                   If the target supports a newer kernel version than the default,
  73                   you can use this config option to enable it
  74
  75
  76         config DISPLAY_SUPPORT
  77                 bool "Show packages that require graphics support (local or remote)"
  78                 default n
  79
  80         config BUILD_PATENTED
  81                 default n
  82                 bool "Compile with support for patented functionality"
  83                 help
  84                   When this option is disabled, software which provides patented functionality
  85                   will not be built.  In case software provides optional support for patented
  86                   functionality, this optional support will get disabled for this package.
  87
  88         config BUILD_NLS
  89                 default n
  90                 bool "Compile with full language support"
  91                 help
  92                   When this option is enabled, packages are built with the full versions of
  93                   iconv and GNU gettext instead of the default OpenWrt stubs. If uClibc is
  94                   used, it is also built with locale support.
  95
  96         config SHADOW_PASSWORDS
  97                 bool
  98                 default y
  99
 100         config CLEAN_IPKG
 101                 bool
 102                 prompt "Remove ipkg/opkg status data files in final images"
 103                 default n
 104                 help
 105                   This removes all ipkg/opkg status data files from the target directory
 106                   before building the root filesystem.
 107
 108         config IPK_FILES_CHECKSUMS
 109                 bool
 110                 prompt "Record files checksums in package metadata"
 111                 default n
 112                 help
 113                   This makes file checksums part of package metadata. It increases size
 114                   but provides you with pkg_check command to check for flash corruptions.
 115
 116         config INCLUDE_CONFIG
 117                 bool "Include build configuration in firmware" if DEVEL
 118                 default n
 119                 help
 120                   If enabled, buildinfo files will be stored in /etc/build.* of firmware.
 121
 122         config REPRODUCIBLE_DEBUG_INFO
 123                 bool "Make debug information reproducible"
 124                 default BUILDBOT
 125                 help
 126                   This strips the local build path out of debug information. This has the
 127                   advantage of making it reproducible, but the disadvantage of making local
 128                   debugging using ./scripts/remote-gdb harder, since the debug data will
 129                   no longer point to the full path on the build host.
 130
 131         config COLLECT_KERNEL_DEBUG
 132                 bool
 133                 prompt "Collect kernel debug information"
 134                 select KERNEL_DEBUG_INFO
 135                 default BUILDBOT
 136                 help
 137                   This collects debugging symbols from the kernel and all compiled modules.
 138                   Useful for release builds, so that kernel issues can be debugged offline
 139                   later.
 140
 141         menu "Kernel build options"
 142
 143         source "config/Config-kernel.in"
 144
 145         endmenu
 146
 147         comment "Package build options"
 148
 149         config DEBUG
 150                 bool
 151                 prompt "Compile packages with debugging info"
 152                 default n
 153                 help
 154                   Adds -g3 to the CFLAGS.
 155
 156         config IPV6
 157                 def_bool y
 158
 159         comment "Stripping options"
 160
 161         choice
 162                 prompt "Binary stripping method"
 163                 default USE_STRIP   if USE_GLIBC
 164                 default USE_SSTRIP
 165                 help
 166                   Select the binary stripping method you wish to use.
 167
 168                 config NO_STRIP
 169                         bool "none"
 170                         help
 171                           This will install unstripped binaries (useful for native
 172                           compiling/debugging).
 173
 174                 config USE_STRIP
 175                         bool "strip"
 176                         help
 177                           This will install binaries stripped using strip from binutils.
 178
 179
 180                 config USE_SSTRIP
 181                         bool "sstrip"
 182                         depends on !USE_GLIBC
 183                         help
 184                           This will install binaries stripped using sstrip.
 185         endchoice
 186
 187         config STRIP_ARGS
 188                 string
 189                 prompt "Strip arguments"
 190                 depends on USE_STRIP
 191                 default "--strip-unneeded --remove-section=.comment --remove-section=.note" if DEBUG
 192                 default "--strip-all"
 193                 help
 194                   Specifies arguments passed to the strip command when stripping binaries.
 195
 196         config SSTRIP_ARGS
 197                 string
 198                 prompt "Sstrip arguments"
 199                 depends on USE_SSTRIP
 200                 default "-z"
 201                 help
 202                   Specifies arguments passed to the sstrip command when stripping binaries.
 203
 204         config STRIP_KERNEL_EXPORTS
 205                 bool "Strip unnecessary exports from the kernel image"
 206                 help
 207                   Reduces kernel size by stripping unused kernel exports from the kernel
 208                   image.  Note that this might make the kernel incompatible with any kernel
 209                   modules that were not selected at the time the kernel image was created.
 210
 211         config USE_MKLIBS
 212                 bool "Strip unnecessary functions from libraries"
 213                 help
 214                   Reduces libraries to only those functions that are necessary for using all
 215                   selected packages (including those selected as <M>).  Note that this will
 216                   make the system libraries incompatible with most of the packages that are
 217                   not selected during the build process.
 218
 219         comment "Hardening build options"
 220
 221         config PKG_CHECK_FORMAT_SECURITY
 222                 bool
 223                 prompt "Enable gcc format-security"
 224                 default y
 225                 help
 226                   Add -Wformat -Werror=format-security to the CFLAGS.  You can disable
 227                   this per package by adding PKG_CHECK_FORMAT_SECURITY:=0 in the package
 228                   Makefile.
 229
 230         choice
 231                 prompt "User space ASLR PIE compilation"
 232                 default PKG_ASLR_PIE_NONE if ((SMALL_FLASH || LOW_MEMORY_FOOTPRINT) && !SDK)
 233                 default PKG_ASLR_PIE_REGULAR
 234                 help
 235                   Add -fPIC to CFLAGS and -specs=hardened-build-ld to LDFLAGS.
 236                   This enables package build as Position Independent Executables (PIE)
 237                   to protect against "return-to-text" attacks. This belongs to the
 238                   feature of Address Space Layout Randomisation (ASLR), which is
 239                   implemented by the kernel and the ELF loader by randomising the
 240                   location of memory allocations. This makes memory addresses harder
 241                   to predict when an attacker is attempting a memory-corruption exploit.
 242                   You can disable this per package by adding PKG_ASLR_PIE:=0 in the package
 243                   Makefile.
 244                   Be ware that ASLR increases the binary size.
 245                 config PKG_ASLR_PIE_NONE
 246                         bool "None"
 247                         help
 248                           PIE is deactivated for all applications
 249                 config PKG_ASLR_PIE_REGULAR
 250                         bool "Regular"
 251                         help
 252                           PIE is activated for some binaries, mostly network exposed applications
 253                 config PKG_ASLR_PIE_ALL
 254                         bool "All"
 255                         select BUSYBOX_DEFAULT_PIE
 256                         help
 257                           PIE is activated for all applications
 258         endchoice
 259
 260         choice
 261                 prompt "User space Stack-Smashing Protection"
 262                 default PKG_CC_STACKPROTECTOR_REGULAR
 263                 help
 264                   Enable GCC Stack Smashing Protection (SSP) for userspace applications
 265                 config PKG_CC_STACKPROTECTOR_NONE
 266                         bool "None"
 267                 config PKG_CC_STACKPROTECTOR_REGULAR
 268                         bool "Regular"
 269                 config PKG_CC_STACKPROTECTOR_STRONG
 270                         bool "Strong"
 271         endchoice
 272
 273         choice
 274                 prompt "Kernel space Stack-Smashing Protection"
 275                 default KERNEL_CC_STACKPROTECTOR_REGULAR
 276                 help
 277                   Enable GCC Stack-Smashing Protection (SSP) for the kernel
 278                 config KERNEL_CC_STACKPROTECTOR_NONE
 279                         bool "None"
 280                 config KERNEL_CC_STACKPROTECTOR_REGULAR
 281                         bool "Regular"
 282                 config KERNEL_CC_STACKPROTECTOR_STRONG
 283                         bool "Strong"
 284         endchoice
 285
 286         config KERNEL_STACKPROTECTOR
 287                 bool
 288                 default KERNEL_CC_STACKPROTECTOR_REGULAR || KERNEL_CC_STACKPROTECTOR_STRONG
 289
 290         config KERNEL_STACKPROTECTOR_STRONG
 291                 bool
 292                 default KERNEL_CC_STACKPROTECTOR_STRONG
 293
 294         choice
 295                 prompt "Enable buffer-overflows detection (FORTIFY_SOURCE)"
 296                 default PKG_FORTIFY_SOURCE_1
 297                 help
 298                   Enable the _FORTIFY_SOURCE macro which introduces additional
 299                   checks to detect buffer-overflows in the following standard library
 300                   functions: memcpy, mempcpy, memmove, memset, strcpy, stpcpy,
 301                   strncpy, strcat, strncat, sprintf, vsprintf, snprintf, vsnprintf,
 302                   gets.  "Conservative" (_FORTIFY_SOURCE set to 1) only introduces
 303                   checks that shouldn't change the behavior of conforming programs,
 304                   while "aggressive" (_FORTIFY_SOURCES set to 2) some more checking is
 305                   added, but some conforming programs might fail.
 306                 config PKG_FORTIFY_SOURCE_NONE
 307                         bool "None"
 308                 config PKG_FORTIFY_SOURCE_1
 309                         bool "Conservative"
 310                 config PKG_FORTIFY_SOURCE_2
 311                         bool "Aggressive"
 312         endchoice
 313
 314         choice
 315                 prompt "Enable RELRO protection"
 316                 default PKG_RELRO_FULL
 317                 help
 318                   Enable a link-time protection known as RELRO (Relocation Read Only)
 319                   which helps to protect from certain type of exploitation techniques
 320                   altering the content of some ELF sections. "Partial" RELRO makes the
 321                   .dynamic section not writeable after initialization, introducing
 322                   almost no performance penalty, while "full" RELRO also marks the GOT
 323                   as read-only at the cost of initializing all of it at startup.
 324                 config PKG_RELRO_NONE
 325                         bool "None"
 326                 config PKG_RELRO_PARTIAL
 327                         bool "Partial"
 328                 config PKG_RELRO_FULL
 329                         bool "Full"
 330         endchoice
 331
 332         config TARGET_ROOTFS_SECURITY_LABELS
 333                 bool
 334                 select KERNEL_SQUASHFS_XATTR
 335                 select KERNEL_EXT4_FS_SECURITY
 336                 select KERNEL_F2FS_FS_SECURITY
 337                 select KERNEL_UBIFS_FS_SECURITY
 338                 select KERNEL_JFFS2_FS_SECURITY
 339
 340         config SELINUX
 341                 bool "Enable SELinux"
 342                 select KERNEL_SECURITY_SELINUX
 343                 select TARGET_ROOTFS_SECURITY_LABELS
 344                 select PACKAGE_procd-selinux
 345                 select PACKAGE_busybox-selinux
 346                 help
 347                   This option enables SELinux kernel features, applies security labels
 348                   in squashfs rootfs and selects the selinux-variants of busybox and procd.
 349
 350                   Selecting this option results in about 0.5MiB of additional flash space
 351                   usage accounting for increased kernel and rootfs size.
 352
 353         choice
 354                 prompt "default SELinux type"
 355                 depends on TARGET_ROOTFS_SECURITY_LABELS
 356                 default SELINUXTYPE_dssp
 357                 help
 358                   Select SELinux policy to be installed and used for applying rootfs labels.
 359
 360                 config SELINUXTYPE_targeted
 361                         bool "targeted"
 362                         select PACKAGE_refpolicy
 363                         help
 364                           SELinux Reference Policy (refpolicy)
 365
 366                 config SELINUXTYPE_dssp
 367                         bool "dssp"
 368                         select PACKAGE_selinux-policy
 369                         help
 370                           Defensec SELinux Security Policy -- OpenWrt edition
 371
 372         endchoice
 373
 374         config SECCOMP
 375                 bool "Enable SECCOMP"
 376                 select KERNEL_SECCOMP
 377                 select PACKAGE_procd-seccomp
 378                 depends on (aarch64 || arm || armeb || mips || mipsel || mips64 || mips64el || i386 || powerpc || x86_64)
 379                 depends on !TARGET_uml
 380                 default y
 381                 help
 382                   This option enables seccomp kernel features to safely
 383                   execute untrusted bytecode and selects the seccomp-variants
 384                   of procd
 385
 386 endmenu