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
  20         comment "General build options"
  21
  22         config DISPLAY_SUPPORT
  23                 bool "Show packages that require graphics support (local or remote)"
  24                 default n
  25
  26         config BUILD_PATENTED
  27                 default y
  28                 bool "Compile with support for patented functionality"
  29                 help
  30                   When this option is disabled, software which provides patented functionality
  31                   will not be built.  In case software provides optional support for patented
  32                   functionality, this optional support will get disabled for this package.
  33
  34         config BUILD_NLS
  35                 default n
  36                 bool "Compile with full language support"
  37                 help
  38                   When this option is enabled, packages are built with the full versions of
  39                   iconv and GNU gettext instead of the default OpenWrt stubs. If uClibc is
  40                   used, it is also built with locale support.
  41
  42         config SHADOW_PASSWORDS
  43                 bool
  44                 prompt "Enable shadow password support"
  45                 default y
  46                 help
  47                   Enable shadow password support.
  48
  49         config CLEAN_IPKG
  50                 bool
  51                 prompt "Remove ipkg/opkg status data files in final images"
  52                 default n
  53                 help
  54                   This removes all ipkg/opkg status data files from the target directory
  55                   before building the root filesystem.
  56
  57         config COLLECT_KERNEL_DEBUG
  58                 bool
  59                 prompt "Collect kernel debug information"
  60                 select KERNEL_DEBUG_INFO
  61                 default n
  62                 help
  63                   This collects debugging symbols from the kernel and all compiled modules.
  64                   Useful for release builds, so that kernel issues can be debugged offline
  65                   later.
  66
  67         comment "Kernel build options"
  68
  69         source "config/Config-kernel.in"
  70
  71         comment "Package build options"
  72
  73         config DEBUG
  74                 bool
  75                 prompt "Compile packages with debugging info"
  76                 default n
  77                 help
  78                   Adds -g3 to the CFLAGS.
  79
  80         config IPV6
  81                 bool
  82                 prompt "Enable IPv6 support in packages"
  83                 default y
  84                 help
  85                   Enable IPv6 support in packages (passes --enable-ipv6 to configure scripts).
  86
  87         config PKG_BUILD_PARALLEL
  88                 bool
  89                 prompt "Compile certain packages parallelized"
  90                 default y
  91                 help
  92                   This adds a -jX option to certain packages that are known to behave well
  93                   for parallel build. By default, the package make processes use the main
  94                   jobserver, in which case this option only takes effect when you add -jX
  95                   to the make command.
  96
  97                   If you are unsure, select N.
  98
  99         config PKG_BUILD_USE_JOBSERVER
 100                 bool
 101                 prompt "Use top-level make jobserver for packages"
 102                 depends on PKG_BUILD_PARALLEL
 103                 default y
 104                 help
 105                   This passes the main make process jobserver fds to package builds,
 106                   enabling full parallelization across different packages.
 107
 108                   Note that disabling this may overcommit CPU resources depending on the
 109                   -j level of the main make process, the number of package submake jobs
 110                   selected below and the number of actual CPUs present.
 111                   Example: If the main make is passed a -j4 and the submake -j
 112                   is also set to 4, we may end up with 16 parallel make processes
 113                   in the worst case.
 114
 115         config PKG_BUILD_JOBS
 116                 int
 117                 prompt "Number of package submake jobs (2-512)"
 118                 range 2 512
 119                 default 2
 120                 depends on PKG_BUILD_PARALLEL && !PKG_BUILD_USE_JOBSERVER
 121                 help
 122                   The number of jobs (-jX) to pass to packages submake.
 123
 124         config PKG_DEFAULT_PARALLEL
 125                 bool
 126                 prompt "Parallelize the default package build rule (May break build)"
 127                 depends on PKG_BUILD_PARALLEL
 128                 depends on BROKEN
 129                 default n
 130                 help
 131                   Always set the default package build rules to parallel build.
 132
 133                   WARNING: This may break build or kill your cat, as it builds packages
 134                   with multiple jobs that are probably not tested in a parallel build
 135                   environment.
 136
 137                   Only say Y if you don't mind fixing broken packages.  Before reporting
 138                   build bugs, set this to N and re-run the build.
 139
 140         comment "Stripping options"
 141
 142         choice
 143                 prompt "Binary stripping method"
 144                 default USE_STRIP   if EXTERNAL_TOOLCHAIN
 145                 default USE_STRIP   if USE_GLIBC || USE_MUSL
 146                 default USE_SSTRIP
 147                 help
 148                   Select the binary stripping method you wish to use.
 149
 150                 config NO_STRIP
 151                         bool "none"
 152                         help
 153                           This will install unstripped binaries (useful for native
 154                           compiling/debugging).
 155
 156                 config USE_STRIP
 157                         bool "strip"
 158                         help
 159                           This will install binaries stripped using strip from binutils.
 160
 161
 162                 config USE_SSTRIP
 163                         bool "sstrip"
 164                         depends on !DEBUG
 165                         depends on !USE_GLIBC
 166                         help
 167                           This will install binaries stripped using sstrip.
 168         endchoice
 169
 170         config STRIP_ARGS
 171                 string
 172                 prompt "Strip arguments"
 173                 depends on USE_STRIP
 174                 default "--strip-unneeded --remove-section=.comment --remove-section=.note" if DEBUG
 175                 default "--strip-all"
 176                 help
 177                   Specifies arguments passed to the strip command when stripping binaries.
 178
 179         config STRIP_KERNEL_EXPORTS
 180                 bool "Strip unnecessary exports from the kernel image"
 181                 help
 182                   Reduces kernel size by stripping unused kernel exports from the kernel
 183                   image.  Note that this might make the kernel incompatible with any kernel
 184                   modules that were not selected at the time the kernel image was created.
 185
 186         config USE_MKLIBS
 187                 bool "Strip unnecessary functions from libraries"
 188                 help
 189                   Reduces libraries to only those functions that are necessary for using all
 190                   selected packages (including those selected as <M>).  Note that this will
 191                   make the system libraries incompatible with most of the packages that are
 192                   not selected during the build process.
 193
 194         choice
 195                 prompt "Preferred standard C++ library"
 196                 default USE_LIBSTDCXX if USE_GLIBC
 197                 default USE_UCLIBCXX
 198                 help
 199                   Select the preferred standard C++ library for all packages that support this.
 200
 201                 config USE_UCLIBCXX
 202                         bool "uClibc++"
 203
 204                 config USE_LIBSTDCXX
 205                         bool "libstdc++"
 206         endchoice
 207
 208         comment "Hardening build options"
 209
 210         config PKG_CHECK_FORMAT_SECURITY
 211                 bool
 212                 prompt "Enable gcc format-security"
 213                 default n
 214                 help
 215                   Add -Wformat -Werror=format-security to the CFLAGS.  You can disable
 216                   this per package by adding PKG_CHECK_FORMAT_SECURITY:=0 in the package
 217                   Makefile.
 218
 219         choice
 220                 prompt "User space Stack-Smashing Protection"
 221                 default PKG_CC_STACKPROTECTOR_NONE
 222                 help
 223                   Enable GCC Stack Smashing Protection (SSP) for userspace applications
 224                 config PKG_CC_STACKPROTECTOR_NONE
 225                         bool "None"
 226                 config PKG_CC_STACKPROTECTOR_REGULAR
 227                         bool "Regular"
 228                         select SSP_SUPPORT
 229                         depends on KERNEL_CC_STACKPROTECTOR_REGULAR
 230                 config PKG_CC_STACKPROTECTOR_STRONG
 231                         bool "Strong"
 232                         select SSP_SUPPORT
 233                         depends on GCC_VERSION_4_9_LINARO
 234                         depends on KERNEL_CC_STACKPROTECTOR_STRONG
 235         endchoice
 236
 237         choice
 238                 prompt "Kernel space Stack-Smashing Protection"
 239                 default KERNEL_CC_STACKPROTECTOR_NONE
 240                 help
 241                   Enable GCC Stack-Smashing Protection (SSP) for the kernel
 242                 config KERNEL_CC_STACKPROTECTOR_NONE
 243                         bool "None"
 244                 config KERNEL_CC_STACKPROTECTOR_REGULAR
 245                         bool "Regular"
 246                 config KERNEL_CC_STACKPROTECTOR_STRONG
 247                         depends on GCC_VERSION_4_9_LINARO
 248                         bool "Strong"
 249         endchoice
 250
 251         choice
 252                 prompt "Enable buffer-overflows detection (FORTIFY_SOURCE)"
 253                 help
 254                   Enable the _FORTIFY_SOURCE macro which introduces additional
 255                   checks to detect buffer-overflows in the following standard library
 256                   functions: memcpy, mempcpy, memmove, memset, strcpy, stpcpy,
 257                   strncpy, strcat, strncat, sprintf, vsprintf, snprintf, vsnprintf,
 258                   gets.  "Conservative" (_FORTIFY_SOURCE set to 1) only introduces
 259                   checks that shouldn't change the behavior of conforming programs,
 260                   while "aggressive" (_FORTIFY_SOURCES set to 2) some more checking is
 261                   added, but some conforming programs might fail.
 262                 config PKG_FORTIFY_SOURCE_NONE
 263                         bool "None"
 264                 config PKG_FORTIFY_SOURCE_1
 265                         bool "Conservative"
 266                 config PKG_FORTIFY_SOURCE_2
 267                         bool "Aggressive"
 268         endchoice
 269
 270         choice
 271                 prompt "Enable RELRO protection"
 272                 help
 273                   Enable a link-time protection known as RELRO (Relocation Read Only)
 274                   which helps to protect from certain type of exploitation techniques
 275                   altering the content of some ELF sections. "Partial" RELRO makes the
 276                   .dynamic section not writeable after initialization, introducing
 277                   almost no performance penalty, while "full" RELRO also marks the GOT
 278                   as read-only at the cost of initializing all of it at startup.
 279                 config PKG_RELRO_NONE
 280                         bool "None"
 281                 config PKG_RELRO_PARTIAL
 282                         bool "Partial"
 283                 config PKG_RELRO_FULL
 284                         bool "Full"
 285         endchoice
 286
 287 endmenu