config/Config-build.in

   1 # Copyright (C) 2006-2013 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 menu "Global build settings"
   8
   9         config ALL_KMODS
  10                 bool "Select all kernel module packages by default"
  11                 default ALL
  12
  13         config ALL
  14                 bool "Select all userspace packages by default"
  15                 default n
  16
  17         config SIGNED_PACKAGES
  18                 bool "Cryptographically signed package lists"
  19                 default y
  20
  21         comment "General build options"
  22
  23         config DISPLAY_SUPPORT
  24                 bool "Show packages that require graphics support (local or remote)"
  25                 default n
  26
  27         config BUILD_PATENTED
  28                 default y
  29                 bool "Compile with support for patented functionality"
  30                 help
  31                   When this option is disabled, software which provides patented functionality
  32                   will not be built.  In case software provides optional support for patented
  33                   functionality, this optional support will get disabled for this package.
  34
  35         config BUILD_NLS
  36                 default n
  37                 bool "Compile with full language support"
  38                 help
  39                   When this option is enabled, packages are built with the full versions of
  40                   iconv and GNU gettext instead of the default OpenWrt stubs. If uClibc is
  41                   used, it is also built with locale support.
  42
  43         config SHADOW_PASSWORDS
  44                 bool
  45                 prompt "Enable shadow password support"
  46                 default y
  47                 help
  48                   Enable shadow password support.
  49
  50         config CLEAN_IPKG
  51                 bool
  52                 prompt "Remove ipkg/opkg status data files in final images"
  53                 default n
  54                 help
  55                   This removes all ipkg/opkg status data files from the target directory
  56                   before building the root filesystem.
  57
  58         config COLLECT_KERNEL_DEBUG
  59                 bool
  60                 prompt "Collect kernel debug information"
  61                 select KERNEL_DEBUG_INFO
  62                 default n
  63                 help
  64                   This collects debugging symbols from the kernel and all compiled modules.
  65                   Useful for release builds, so that kernel issues can be debugged offline
  66                   later.
  67
  68         comment "Kernel build options"
  69
  70         source "config/Config-kernel.in"
  71
  72         comment "Package build options"
  73
  74         config DEBUG
  75                 bool
  76                 prompt "Compile packages with debugging info"
  77                 default n
  78                 help
  79                   Adds -g3 to the CFLAGS.
  80
  81         config IPV6
  82                 bool
  83                 prompt "Enable IPv6 support in packages"
  84                 default y
  85                 help
  86                   Enables IPv6 support in kernel (builtin) and packages.
  87
  88         config PKG_BUILD_PARALLEL
  89                 bool
  90                 prompt "Compile certain packages parallelized"
  91                 default y
  92                 help
  93                   This adds a -jX option to certain packages that are known to behave well
  94                   for parallel build. By default, the package make processes use the main
  95                   jobserver, in which case this option only takes effect when you add -jX
  96                   to the make command.
  97
  98                   If you are unsure, select N.
  99
 100         config PKG_BUILD_USE_JOBSERVER
 101                 bool
 102                 prompt "Use top-level make jobserver for packages"
 103                 depends on PKG_BUILD_PARALLEL
 104                 default y
 105                 help
 106                   This passes the main make process jobserver fds to package builds,
 107                   enabling full parallelization across different packages.
 108
 109                   Note that disabling this may overcommit CPU resources depending on the
 110                   -j level of the main make process, the number of package submake jobs
 111                   selected below and the number of actual CPUs present.
 112                   Example: If the main make is passed a -j4 and the submake -j
 113                   is also set to 4, we may end up with 16 parallel make processes
 114                   in the worst case.
 115
 116         config PKG_BUILD_JOBS
 117                 int
 118                 prompt "Number of package submake jobs (2-512)"
 119                 range 2 512
 120                 default 2
 121                 depends on PKG_BUILD_PARALLEL && !PKG_BUILD_USE_JOBSERVER
 122                 help
 123                   The number of jobs (-jX) to pass to packages submake.
 124
 125         config PKG_DEFAULT_PARALLEL
 126                 bool
 127                 prompt "Parallelize the default package build rule (May break build)"
 128                 depends on PKG_BUILD_PARALLEL
 129                 depends on BROKEN
 130                 default n
 131                 help
 132                   Always set the default package build rules to parallel build.
 133
 134                   WARNING: This may break build or kill your cat, as it builds packages
 135                   with multiple jobs that are probably not tested in a parallel build
 136                   environment.
 137
 138                   Only say Y if you don't mind fixing broken packages.  Before reporting
 139                   build bugs, set this to N and re-run the build.
 140
 141         comment "Stripping options"
 142
 143         choice
 144                 prompt "Binary stripping method"
 145                 default USE_STRIP   if EXTERNAL_TOOLCHAIN
 146                 default USE_STRIP   if USE_GLIBC
 147                 default USE_SSTRIP
 148                 help
 149                   Select the binary stripping method you wish to use.
 150
 151                 config NO_STRIP
 152                         bool "none"
 153                         help
 154                           This will install unstripped binaries (useful for native
 155                           compiling/debugging).
 156
 157                 config USE_STRIP
 158                         bool "strip"
 159                         help
 160                           This will install binaries stripped using strip from binutils.
 161
 162
 163                 config USE_SSTRIP
 164                         bool "sstrip"
 165                         depends on !DEBUG
 166                         depends on !USE_GLIBC
 167                         help
 168                           This will install binaries stripped using sstrip.
 169         endchoice
 170
 171         config STRIP_ARGS
 172                 string
 173                 prompt "Strip arguments"
 174                 depends on USE_STRIP
 175                 default "--strip-unneeded --remove-section=.comment --remove-section=.note" if DEBUG
 176                 default "--strip-all"
 177                 help
 178                   Specifies arguments passed to the strip command when stripping binaries.
 179
 180         config STRIP_KERNEL_EXPORTS
 181                 bool "Strip unnecessary exports from the kernel image"
 182                 help
 183                   Reduces kernel size by stripping unused kernel exports from the kernel
 184                   image.  Note that this might make the kernel incompatible with any kernel
 185                   modules that were not selected at the time the kernel image was created.
 186
 187         config USE_MKLIBS
 188                 bool "Strip unnecessary functions from libraries"
 189                 help
 190                   Reduces libraries to only those functions that are necessary for using all
 191                   selected packages (including those selected as <M>).  Note that this will
 192                   make the system libraries incompatible with most of the packages that are
 193                   not selected during the build process.
 194
 195         choice
 196                 prompt "Preferred standard C++ library"
 197                 default USE_LIBSTDCXX if USE_GLIBC
 198                 default USE_UCLIBCXX
 199                 help
 200                   Select the preferred standard C++ library for all packages that support this.
 201
 202                 config USE_UCLIBCXX
 203                         bool "uClibc++"
 204
 205                 config USE_LIBSTDCXX
 206                         bool "libstdc++"
 207         endchoice
 208
 209         comment "Hardening build options"
 210
 211         config PKG_CHECK_FORMAT_SECURITY
 212                 bool
 213                 prompt "Enable gcc format-security"
 214                 default y
 215                 help
 216                   Add -Wformat -Werror=format-security to the CFLAGS.  You can disable
 217                   this per package by adding PKG_CHECK_FORMAT_SECURITY:=0 in the package
 218                   Makefile.
 219
 220         choice
 221                 prompt "User space Stack-Smashing Protection"
 222                 depends on USE_MUSL
 223                 default PKG_CC_STACKPROTECTOR_REGULAR
 224                 help
 225                   Enable GCC Stack Smashing Protection (SSP) for userspace applications
 226                 config PKG_CC_STACKPROTECTOR_NONE
 227                         bool "None"
 228                 config PKG_CC_STACKPROTECTOR_REGULAR
 229                         bool "Regular"
 230                         select SSP_SUPPORT if !USE_MUSL
 231                         depends on KERNEL_CC_STACKPROTECTOR_REGULAR
 232                 config PKG_CC_STACKPROTECTOR_STRONG
 233                         bool "Strong"
 234                         select SSP_SUPPORT if !USE_MUSL
 235                         depends on GCC_VERSION_5
 236                         depends on KERNEL_CC_STACKPROTECTOR_STRONG
 237         endchoice
 238
 239         choice
 240                 prompt "Kernel space Stack-Smashing Protection"
 241                 default KERNEL_CC_STACKPROTECTOR_REGULAR
 242                 depends on USE_MUSL || !(x86_64 || i386)
 243                 help
 244                   Enable GCC Stack-Smashing Protection (SSP) for the kernel
 245                 config KERNEL_CC_STACKPROTECTOR_NONE
 246                         bool "None"
 247                 config KERNEL_CC_STACKPROTECTOR_REGULAR
 248                         bool "Regular"
 249                 config KERNEL_CC_STACKPROTECTOR_STRONG
 250                         depends on GCC_VERSION_5
 251                         bool "Strong"
 252         endchoice
 253
 254         choice
 255                 prompt "Enable buffer-overflows detection (FORTIFY_SOURCE)"
 256                 default PKG_FORTIFY_SOURCE_1
 257                 help
 258                   Enable the _FORTIFY_SOURCE macro which introduces additional
 259                   checks to detect buffer-overflows in the following standard library
 260                   functions: memcpy, mempcpy, memmove, memset, strcpy, stpcpy,
 261                   strncpy, strcat, strncat, sprintf, vsprintf, snprintf, vsnprintf,
 262                   gets.  "Conservative" (_FORTIFY_SOURCE set to 1) only introduces
 263                   checks that shouldn't change the behavior of conforming programs,
 264                   while "aggressive" (_FORTIFY_SOURCES set to 2) some more checking is
 265                   added, but some conforming programs might fail.
 266                 config PKG_FORTIFY_SOURCE_NONE
 267                         bool "None"
 268                 config PKG_FORTIFY_SOURCE_1
 269                         bool "Conservative"
 270                 config PKG_FORTIFY_SOURCE_2
 271                         bool "Aggressive"
 272         endchoice
 273
 274         choice
 275                 prompt "Enable RELRO protection"
 276                 default PKG_RELRO_FULL
 277                 help
 278                   Enable a link-time protection known as RELRO (Relocation Read Only)
 279                   which helps to protect from certain type of exploitation techniques
 280                   altering the content of some ELF sections. "Partial" RELRO makes the
 281                   .dynamic section not writeable after initialization, introducing
 282                   almost no performance penalty, while "full" RELRO also marks the GOT
 283                   as read-only at the cost of initializing all of it at startup.
 284                 config PKG_RELRO_NONE
 285                         bool "None"
 286                 config PKG_RELRO_PARTIAL
 287                         bool "Partial"
 288                 config PKG_RELRO_FULL
 289                         bool "Full"
 290         endchoice
 291
 292 endmenu