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