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
  10                 bool "Select all packages by default"
  11                 default n
  12
  13         comment "General build options"
  14
  15         config DISPLAY_SUPPORT
  16                 bool "Show packages that require graphics support (local or remote)"
  17                 default n
  18
  19         config BUILD_PATENTED
  20                 default y
  21                 bool "Compile with support for patented functionality"
  22                 help
  23                   When this option is disabled, software which provides patented functionality
  24                   will not be built.  In case software provides optional support for patented
  25                   functionality, this optional support will get disabled for this package.
  26
  27         config BUILD_NLS
  28                 default n
  29                 bool "Compile with full language support"
  30                 help
  31                   When this option is enabled, packages are built with the full versions of
  32                   iconv and GNU gettext instead of the default OpenWrt stubs. If uClibc is
  33                   used, it is also built with locale support.
  34
  35         config SHADOW_PASSWORDS
  36                 bool
  37                 prompt "Enable shadow password support"
  38                 default y
  39                 help
  40                   Enable shadow password support.
  41
  42         config CLEAN_IPKG
  43                 bool
  44                 prompt "Remove ipkg/opkg status data files in final images"
  45                 default n
  46                 help
  47                   This removes all ipkg/opkg status data files from the target directory
  48                   before building the root filesystem.
  49
  50         config COLLECT_KERNEL_DEBUG
  51                 bool
  52                 prompt "Collect kernel debug information"
  53                 select KERNEL_DEBUG_INFO
  54                 default n
  55                 help
  56                   This collects debugging symbols from the kernel and all compiled modules.
  57                   Useful for release builds, so that kernel issues can be debugged offline
  58                   later.
  59
  60         comment "Kernel build options"
  61
  62         source "config/Config-kernel.in"
  63
  64         comment "Package build options"
  65
  66         config DEBUG
  67                 bool
  68                 prompt "Compile packages with debugging info"
  69                 default n
  70                 help
  71                   Adds -g3 to the CFLAGS.
  72
  73         config IPV6
  74                 bool
  75                 prompt "Enable IPv6 support in packages"
  76                 default y
  77                 help
  78                   Enable IPv6 support in packages (passes --enable-ipv6 to configure scripts).
  79
  80         config PKG_BUILD_PARALLEL
  81                 bool
  82                 prompt "Compile certain packages parallelized"
  83                 default y
  84                 help
  85                   This adds a -jX option to certain packages that are known to behave well
  86                   for parallel build. By default, the package make processes use the main
  87                   jobserver, in which case this option only takes effect when you add -jX
  88                   to the make command.
  89
  90                   If you are unsure, select N.
  91
  92         config PKG_BUILD_USE_JOBSERVER
  93                 bool
  94                 prompt "Use top-level make jobserver for packages"
  95                 depends on PKG_BUILD_PARALLEL
  96                 default y
  97                 help
  98                   This passes the main make process jobserver fds to package builds,
  99                   enabling full parallelization across different packages.
 100
 101                   Note that disabling this may overcommit CPU resources depending on the
 102                   -j level of the main make process, the number of package submake jobs
 103                   selected below and the number of actual CPUs present.
 104                   Example: If the main make is passed a -j4 and the submake -j
 105                   is also set to 4, we may end up with 16 parallel make processes
 106                   in the worst case.
 107
 108         config PKG_BUILD_JOBS
 109                 int
 110                 prompt "Number of package submake jobs (2-512)"
 111                 range 2 512
 112                 default 2
 113                 depends on PKG_BUILD_PARALLEL && !PKG_BUILD_USE_JOBSERVER
 114                 help
 115                   The number of jobs (-jX) to pass to packages submake.
 116
 117         config PKG_DEFAULT_PARALLEL
 118                 bool
 119                 prompt "Parallelize the default package build rule (May break build)"
 120                 depends on PKG_BUILD_PARALLEL
 121                 depends on BROKEN
 122                 default n
 123                 help
 124                   Always set the default package build rules to parallel build.
 125
 126                   WARNING: This may break build or kill your cat, as it builds packages
 127                   with multiple jobs that are probably not tested in a parallel build
 128                   environment.
 129
 130                   Only say Y if you don't mind fixing broken packages.  Before reporting
 131                   build bugs, set this to N and re-run the build.
 132
 133         comment "Stripping options"
 134
 135         choice
 136                 prompt "Binary stripping method"
 137                 default USE_STRIP   if EXTERNAL_TOOLCHAIN
 138                 default USE_STRIP   if USE_GLIBC || USE_EGLIBC || USE_MUSL
 139                 default USE_SSTRIP
 140                 help
 141                   Select the binary stripping method you wish to use.
 142
 143                 config NO_STRIP
 144                         bool "none"
 145                         help
 146                           This will install unstripped binaries (useful for native
 147                           compiling/debugging).
 148
 149                 config USE_STRIP
 150                         bool "strip"
 151                         help
 152                           This will install binaries stripped using strip from binutils.
 153
 154
 155                 config USE_SSTRIP
 156                         bool "sstrip"
 157                         depends on !DEBUG
 158                         depends on !USE_GLIBC
 159                         depends on !USE_EGLIBC
 160                         help
 161                           This will install binaries stripped using sstrip.
 162         endchoice
 163
 164         config STRIP_ARGS
 165                 string
 166                 prompt "Strip arguments"
 167                 depends on USE_STRIP
 168                 default "--strip-unneeded --remove-section=.comment --remove-section=.note" if DEBUG
 169                 default "--strip-all"
 170                 help
 171                   Specifies arguments passed to the strip command when stripping binaries.
 172
 173         config STRIP_KERNEL_EXPORTS
 174                 bool "Strip unnecessary exports from the kernel image"
 175                 help
 176                   Reduces kernel size by stripping unused kernel exports from the kernel
 177                   image.  Note that this might make the kernel incompatible with any kernel
 178                   modules that were not selected at the time the kernel image was created.
 179
 180         config USE_MKLIBS
 181                 bool "Strip unnecessary functions from libraries"
 182                 help
 183                   Reduces libraries to only those functions that are necessary for using all
 184                   selected packages (including those selected as <M>).  Note that this will
 185                   make the system libraries incompatible with most of the packages that are
 186                   not selected during the build process.
 187
 188         choice
 189                 prompt "Preferred standard C++ library"
 190                 default USE_LIBSTDCXX if USE_EGLIBC
 191                 default USE_UCLIBCXX
 192                 help
 193                   Select the preferred standard C++ library for all packages that support this.
 194
 195                 config USE_UCLIBCXX
 196                         bool "uClibc++"
 197
 198                 config USE_LIBSTDCXX
 199                         bool "libstdc++"
 200         endchoice
 201
 202         comment "Hardening build options"
 203
 204         config PKG_CHECK_FORMAT_SECURITY
 205                 bool
 206                 prompt "Enable gcc format-security"
 207                 default n
 208                 help
 209                   Add -Wformat -Werror=format-security to the CFLAGS.  You can disable
 210                   this per package by adding PKG_CHECK_FORMAT_SECURITY:=0 in the package
 211                   Makefile.
 212
 213         choice
 214                 prompt "User space Stack-Smashing Protection"
 215                 default PKG_CC_STACKPROTECTOR_NONE
 216                 help
 217                   Enable GCC Stack Smashing Protection (SSP) for userspace applications
 218                 config PKG_CC_STACKPROTECTOR_NONE
 219                         bool "None"
 220                 config PKG_CC_STACKPROTECTOR_REGULAR
 221                         bool "Regular"
 222                         select SSP_SUPPORT
 223                         depends on KERNEL_CC_STACKPROTECTOR_REGULAR
 224                 config PKG_CC_STACKPROTECTOR_STRONG
 225                         bool "Strong"
 226                         select SSP_SUPPORT
 227                         depends on GCC_VERSION_4_9_LINARO
 228                         depends on KERNEL_CC_STACKPROTECTOR_STRONG
 229         endchoice
 230
 231         choice
 232                 prompt "Kernel space Stack-Smashing Protection"
 233                 default KERNEL_CC_STACKPROTECTOR_NONE
 234                 help
 235                   Enable GCC Stack-Smashing Protection (SSP) for the kernel
 236                 config KERNEL_CC_STACKPROTECTOR_NONE
 237                         bool "None"
 238                 config KERNEL_CC_STACKPROTECTOR_REGULAR
 239                         bool "Regular"
 240                 config KERNEL_CC_STACKPROTECTOR_STRONG
 241                         depends on GCC_VERSION_4_9_LINARO
 242                         bool "Strong"
 243         endchoice
 244
 245         choice
 246                 prompt "Enable buffer-overflows detection (FORTIFY_SOURCE)"
 247                 help
 248                   Enable the _FORTIFY_SOURCE macro which introduces additional
 249                   checks to detect buffer-overflows in the following standard library
 250                   functions: memcpy, mempcpy, memmove, memset, strcpy, stpcpy,
 251                   strncpy, strcat, strncat, sprintf, vsprintf, snprintf, vsnprintf,
 252                   gets.  "Conservative" (_FORTIFY_SOURCE set to 1) only introduces
 253                   checks that shouldn't change the behavior of conforming programs,
 254                   while "aggressive" (_FORTIFY_SOURCES set to 2) some more checking is
 255                   added, but some conforming programs might fail.
 256                 config PKG_FORTIFY_SOURCE_NONE
 257                         bool "None"
 258                 config PKG_FORTIFY_SOURCE_1
 259                         bool "Conservative"
 260                 config PKG_FORTIFY_SOURCE_2
 261                         bool "Aggressive"
 262         endchoice
 263
 264         choice
 265                 prompt "Enable RELRO protection"
 266                 help
 267                   Enable a link-time protection known as RELRO (Relocation Read Only)
 268                   which helps to protect from certain type of exploitation techniques
 269                   altering the content of some ELF sections. "Partial" RELRO makes the
 270                   .dynamic section not writeable after initialization, introducing
 271                   almost no performance penalty, while "full" RELRO also marks the GOT
 272                   as read-only at the cost of initializing all of it at startup.
 273                 config PKG_RELRO_NONE
 274                         bool "None"
 275                 config PKG_RELRO_PARTIAL
 276                         bool "Partial"
 277                 config PKG_RELRO_FULL
 278                         bool "Full"
 279         endchoice
 280
 281 endmenu