config/Config-build.in

   1 # Copyright (C) 2006-2013 OpenWrt.org
   2 # Copyright (C) 2016 LEDE Project
   3 #
   4 # This is free software, licensed under the GNU General Public License v2.
   5 # See /LICENSE for more information.
   6 #
   7
   8 menu "Global build settings"
   9
  10         config JSON_OVERVIEW_IMAGE_INFO
  11                 bool "Create JSON info file overview per target"
  12                 default BUILDBOT
  13                 help
  14                   Create a JSON info file called profiles.json in the target
  15                   directory containing machine readable list of built profiles
  16                   and resulting images.
  17
  18         config ALL_NONSHARED
  19                 bool "Select all target specific packages by default"
  20                 select ALL_KMODS
  21                 default BUILDBOT
  22
  23         config ALL_KMODS
  24                 bool "Select all kernel module packages by default"
  25
  26         config ALL
  27                 bool "Select all userspace packages by default"
  28                 select ALL_KMODS
  29                 select ALL_NONSHARED
  30
  31         config BUILDBOT
  32                 bool "Set build defaults for automatic builds (e.g. via buildbot)"
  33                 default n
  34                 help
  35                   This option changes several defaults to be more suitable for
  36                   automatic builds. This includes the following changes:
  37                   - Deleting build directories after compiling (to save space)
  38                   - Enabling per-device rootfs support
  39                   ...
  40
  41         config SIGNED_PACKAGES
  42                 bool "Cryptographically signed package lists"
  43                 default y
  44
  45         config SIGNATURE_CHECK
  46                 bool "Enable signature checking in opkg"
  47                 default SIGNED_PACKAGES
  48
  49         comment "General build options"
  50
  51         config TESTING_KERNEL
  52                 bool "Use the testing kernel version"
  53                 depends on HAS_TESTING_KERNEL
  54                 default n
  55                 help
  56                   If the target supports a newer kernel version than the default,
  57                   you can use this config option to enable it
  58
  59
  60         config DISPLAY_SUPPORT
  61                 bool "Show packages that require graphics support (local or remote)"
  62                 default n
  63
  64         config BUILD_PATENTED
  65                 default n
  66                 bool "Compile with support for patented functionality"
  67                 help
  68                   When this option is disabled, software which provides patented functionality
  69                   will not be built.  In case software provides optional support for patented
  70                   functionality, this optional support will get disabled for this package.
  71
  72         config BUILD_NLS
  73                 default n
  74                 bool "Compile with full language support"
  75                 help
  76                   When this option is enabled, packages are built with the full versions of
  77                   iconv and GNU gettext instead of the default OpenWrt stubs. If uClibc is
  78                   used, it is also built with locale support.
  79
  80         config SHADOW_PASSWORDS
  81                 bool
  82                 default y
  83
  84         config CLEAN_IPKG
  85                 bool
  86                 prompt "Remove ipkg/opkg status data files in final images"
  87                 default n
  88                 help
  89                   This removes all ipkg/opkg status data files from the target directory
  90                   before building the root filesystem.
  91
  92         config IPK_FILES_CHECKSUMS
  93                 bool
  94                 prompt "Record files checksums in package metadata"
  95                 default n
  96                 help
  97                   This makes file checksums part of package metadata. It increases size
  98                   but provides you with pkg_check command to check for flash coruptions.
  99
 100         config INCLUDE_CONFIG
 101                 bool "Include build configuration in firmware" if DEVEL
 102                 default n
 103                 help
 104                   If enabled, buildinfo files will be stored in /etc/build.* of firmware.
 105
 106         config REPRODUCIBLE_DEBUG_INFO
 107                 bool "Make debug information reproducible"
 108                 default BUILDBOT
 109                 help
 110                   This strips the local build path out of debug information. This has the
 111                   advantage of making it reproducible, but the disadvantage of making local
 112                   debugging using ./scripts/remote-gdb harder, since the debug data will
 113                   no longer point to the full path on the build host.
 114
 115         config COLLECT_KERNEL_DEBUG
 116                 bool
 117                 prompt "Collect kernel debug information"
 118                 select KERNEL_DEBUG_INFO
 119                 default BUILDBOT
 120                 help
 121                   This collects debugging symbols from the kernel and all compiled modules.
 122                   Useful for release builds, so that kernel issues can be debugged offline
 123                   later.
 124
 125         menu "Kernel build options"
 126
 127         source "config/Config-kernel.in"
 128
 129         endmenu
 130
 131         comment "Package build options"
 132
 133         config DEBUG
 134                 bool
 135                 prompt "Compile packages with debugging info"
 136                 default n
 137                 help
 138                   Adds -g3 to the CFLAGS.
 139
 140         config IPV6
 141                 bool
 142                 prompt "Enable IPv6 support in packages"
 143                 default y
 144                 help
 145                   Enables IPv6 support in kernel (builtin) and packages.
 146
 147         comment "Stripping options"
 148
 149         choice
 150                 prompt "Binary stripping method"
 151                 default USE_STRIP   if EXTERNAL_TOOLCHAIN
 152                 default USE_STRIP   if USE_GLIBC
 153                 default USE_SSTRIP
 154                 help
 155                   Select the binary stripping method you wish to use.
 156
 157                 config NO_STRIP
 158                         bool "none"
 159                         help
 160                           This will install unstripped binaries (useful for native
 161                           compiling/debugging).
 162
 163                 config USE_STRIP
 164                         bool "strip"
 165                         help
 166                           This will install binaries stripped using strip from binutils.
 167
 168
 169                 config USE_SSTRIP
 170                         bool "sstrip"
 171                         depends on !USE_GLIBC
 172                         help
 173                           This will install binaries stripped using sstrip.
 174         endchoice
 175
 176         config STRIP_ARGS
 177                 string
 178                 prompt "Strip arguments"
 179                 depends on USE_STRIP
 180                 default "--strip-unneeded --remove-section=.comment --remove-section=.note" if DEBUG
 181                 default "--strip-all"
 182                 help
 183                   Specifies arguments passed to the strip command when stripping binaries.
 184
 185         config SSTRIP_ARGS
 186                 string
 187                 prompt "Sstrip arguments"
 188                 depends on USE_SSTRIP
 189                 default "-z"
 190                 help
 191                   Specifies arguments passed to the sstrip command when stripping binaries.
 192
 193         config STRIP_KERNEL_EXPORTS
 194                 bool "Strip unnecessary exports from the kernel image"
 195                 help
 196                   Reduces kernel size by stripping unused kernel exports from the kernel
 197                   image.  Note that this might make the kernel incompatible with any kernel
 198                   modules that were not selected at the time the kernel image was created.
 199
 200         config USE_MKLIBS
 201                 bool "Strip unnecessary functions from libraries"
 202                 help
 203                   Reduces libraries to only those functions that are necessary for using all
 204                   selected packages (including those selected as <M>).  Note that this will
 205                   make the system libraries incompatible with most of the packages that are
 206                   not selected during the build process.
 207
 208         choice
 209                 prompt "Preferred standard C++ library"
 210                 default USE_LIBSTDCXX if USE_GLIBC
 211                 default USE_UCLIBCXX
 212                 help
 213                   Select the preferred standard C++ library for all packages that support this.
 214
 215                 config USE_UCLIBCXX
 216                         bool "uClibc++"
 217
 218                 config USE_LIBCXX
 219                         bool "libc++"
 220                         depends on !USE_UCLIBC
 221
 222                 config USE_LIBSTDCXX
 223                         bool "libstdc++"
 224         endchoice
 225
 226         comment "Hardening build options"
 227
 228         config PKG_CHECK_FORMAT_SECURITY
 229                 bool
 230                 prompt "Enable gcc format-security"
 231                 default y
 232                 help
 233                   Add -Wformat -Werror=format-security to the CFLAGS.  You can disable
 234                   this per package by adding PKG_CHECK_FORMAT_SECURITY:=0 in the package
 235                   Makefile.
 236
 237         choice
 238                 prompt "User space ASLR PIE compilation"
 239                 default PKG_ASLR_PIE_NONE if ((SMALL_FLASH || LOW_MEMORY_FOOTPRINT) && !SDK)
 240                 default PKG_ASLR_PIE_REGULAR
 241                 help
 242                   Add -fPIC to CFLAGS and -specs=hardened-build-ld to LDFLAGS.
 243                   This enables package build as Position Independent Executables (PIE)
 244                   to protect against "return-to-text" attacks. This belongs to the
 245                   feature of Address Space Layout Randomisation (ASLR), which is
 246                   implemented by the kernel and the ELF loader by randomising the
 247                   location of memory allocations. This makes memory addresses harder
 248                   to predict when an attacker is attempting a memory-corruption exploit.
 249                   You can disable this per package by adding PKG_ASLR_PIE:=0 in the package
 250                   Makefile.
 251                   Be ware that ASLR increases the binary size.
 252                 config PKG_ASLR_PIE_NONE
 253                         bool "None"
 254                         help
 255                           PIE is deactivated for all applications
 256                 config PKG_ASLR_PIE_REGULAR
 257                         bool "Regular"
 258                         help
 259                           PIE is activated for some binaries, mostly network exposed applications
 260                 config PKG_ASLR_PIE_ALL
 261                         bool "All"
 262                         select BUSYBOX_DEFAULT_PIE
 263                         help
 264                           PIE is activated for all applications
 265         endchoice
 266
 267         choice
 268                 prompt "User space Stack-Smashing Protection"
 269                 default PKG_CC_STACKPROTECTOR_REGULAR
 270                 help
 271                   Enable GCC Stack Smashing Protection (SSP) for userspace applications
 272                 config PKG_CC_STACKPROTECTOR_NONE
 273                         bool "None"
 274                 config PKG_CC_STACKPROTECTOR_REGULAR
 275                         bool "Regular"
 276                 config PKG_CC_STACKPROTECTOR_STRONG
 277                         bool "Strong"
 278         endchoice
 279
 280         choice
 281                 prompt "Kernel space Stack-Smashing Protection"
 282                 default KERNEL_CC_STACKPROTECTOR_REGULAR
 283                 help
 284                   Enable GCC Stack-Smashing Protection (SSP) for the kernel
 285                 config KERNEL_CC_STACKPROTECTOR_NONE
 286                         bool "None"
 287                 config KERNEL_CC_STACKPROTECTOR_REGULAR
 288                         bool "Regular"
 289                 config KERNEL_CC_STACKPROTECTOR_STRONG
 290                         bool "Strong"
 291         endchoice
 292
 293         config KERNEL_STACKPROTECTOR
 294                 bool
 295                 default KERNEL_CC_STACKPROTECTOR_REGULAR || KERNEL_CC_STACKPROTECTOR_STRONG
 296
 297         config KERNEL_STACKPROTECTOR_STRONG
 298                 bool
 299                 default KERNEL_CC_STACKPROTECTOR_STRONG
 300
 301         choice
 302                 prompt "Enable buffer-overflows detection (FORTIFY_SOURCE)"
 303                 default PKG_FORTIFY_SOURCE_1
 304                 help
 305                   Enable the _FORTIFY_SOURCE macro which introduces additional
 306                   checks to detect buffer-overflows in the following standard library
 307                   functions: memcpy, mempcpy, memmove, memset, strcpy, stpcpy,
 308                   strncpy, strcat, strncat, sprintf, vsprintf, snprintf, vsnprintf,
 309                   gets.  "Conservative" (_FORTIFY_SOURCE set to 1) only introduces
 310                   checks that shouldn't change the behavior of conforming programs,
 311                   while "aggressive" (_FORTIFY_SOURCES set to 2) some more checking is
 312                   added, but some conforming programs might fail.
 313                 config PKG_FORTIFY_SOURCE_NONE
 314                         bool "None"
 315                 config PKG_FORTIFY_SOURCE_1
 316                         bool "Conservative"
 317                 config PKG_FORTIFY_SOURCE_2
 318                         bool "Aggressive"
 319         endchoice
 320
 321         choice
 322                 prompt "Enable RELRO protection"
 323                 default PKG_RELRO_FULL
 324                 help
 325                   Enable a link-time protection known as RELRO (Relocation Read Only)
 326                   which helps to protect from certain type of exploitation techniques
 327                   altering the content of some ELF sections. "Partial" RELRO makes the
 328                   .dynamic section not writeable after initialization, introducing
 329                   almost no performance penalty, while "full" RELRO also marks the GOT
 330                   as read-only at the cost of initializing all of it at startup.
 331                 config PKG_RELRO_NONE
 332                         bool "None"
 333                 config PKG_RELRO_PARTIAL
 334                         bool "Partial"
 335                 config PKG_RELRO_FULL
 336                         bool "Full"
 337         endchoice
 338
 339         config TARGET_ROOTFS_SECURITY_LABELS
 340                 bool
 341                 select KERNEL_SQUASHFS_XATTR
 342                 select KERNEL_EXT4_FS_SECURITY
 343                 select KERNEL_F2FS_FS_SECURITY
 344                 select KERNEL_UBIFS_FS_SECURITY
 345                 select KERNEL_JFFS2_FS_SECURITY
 346
 347         config SELINUX
 348                 bool "Enable SELinux"
 349                 select KERNEL_SECURITY_SELINUX
 350                 select TARGET_ROOTFS_SECURITY_LABELS
 351                 select PACKAGE_procd-selinux
 352                 select PACKAGE_busybox-selinux
 353                 help
 354                   This option enables SELinux kernel features, applies security labels
 355                   in squashfs rootfs and selects the selinux-variants of busybox and procd.
 356
 357                   Selecting this option results in about 0.5MiB of additional flash space
 358                   usage accounting for increased kernel and rootfs size.
 359
 360         choice
 361                 prompt "default SELinux type"
 362                 depends on TARGET_ROOTFS_SECURITY_LABELS
 363                 default SELINUXTYPE_dssp
 364                 help
 365                   Select SELinux policy to be installed and used for applying rootfs labels.
 366
 367                 config SELINUXTYPE_targeted
 368                         bool "targeted"
 369                         select PACKAGE_refpolicy
 370                         help
 371                           SELinux Reference Policy (refpolicy)
 372
 373                 config SELINUXTYPE_dssp
 374                         bool "dssp"
 375                         select PACKAGE_selinux-policy
 376                         help
 377                           Defensec SELinux Security Policy -- OpenWrt edition
 378
 379         endchoice
 380
 381 endmenu