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         comment "General build options"
  18
  19         config DISPLAY_SUPPORT
  20                 bool "Show packages that require graphics support (local or remote)"
  21                 default n
  22
  23         config BUILD_PATENTED
  24                 default y
  25                 bool "Compile with support for patented functionality"
  26                 help
  27                   When this option is disabled, software which provides patented functionality
  28                   will not be built.  In case software provides optional support for patented
  29                   functionality, this optional support will get disabled for this package.
  30
  31         config BUILD_NLS
  32                 default n
  33                 bool "Compile with full language support"
  34                 help
  35                   When this option is enabled, packages are built with the full versions of
  36                   iconv and GNU gettext instead of the default OpenWrt stubs. If uClibc is
  37                   used, it is also built with locale support.
  38
  39         config SHADOW_PASSWORDS
  40                 bool
  41                 prompt "Enable shadow password support"
  42                 default y
  43                 help
  44                   Enable shadow password support.
  45
  46         config CLEAN_IPKG
  47                 bool
  48                 prompt "Remove ipkg/opkg status data files in final images"
  49                 default n
  50                 help
  51                   This removes all ipkg/opkg status data files from the target directory
  52                   before building the root filesystem.
  53
  54         config COLLECT_KERNEL_DEBUG
  55                 bool
  56                 prompt "Collect kernel debug information"
  57                 select KERNEL_DEBUG_INFO
  58                 default n
  59                 help
  60                   This collects debugging symbols from the kernel and all compiled modules.
  61                   Useful for release builds, so that kernel issues can be debugged offline
  62                   later.
  63
  64         comment "Kernel build options"
  65
  66         source "config/Config-kernel.in"
  67
  68         comment "Package build options"
  69
  70         config DEBUG
  71                 bool
  72                 prompt "Compile packages with debugging info"
  73                 default n
  74                 help
  75                   Adds -g3 to the CFLAGS.
  76
  77         config IPV6
  78                 bool
  79                 prompt "Enable IPv6 support in packages"
  80                 default y
  81                 help
  82                   Enable IPv6 support in packages (passes --enable-ipv6 to configure scripts).
  83
  84         config PKG_BUILD_PARALLEL
  85                 bool
  86                 prompt "Compile certain packages parallelized"
  87                 default y
  88                 help
  89                   This adds a -jX option to certain packages that are known to behave well
  90                   for parallel build. By default, the package make processes use the main
  91                   jobserver, in which case this option only takes effect when you add -jX
  92                   to the make command.
  93
  94                   If you are unsure, select N.
  95
  96         config PKG_BUILD_USE_JOBSERVER
  97                 bool
  98                 prompt "Use top-level make jobserver for packages"
  99                 depends on PKG_BUILD_PARALLEL
 100                 default y
 101                 help
 102                   This passes the main make process jobserver fds to package builds,
 103                   enabling full parallelization across different packages.
 104
 105                   Note that disabling this may overcommit CPU resources depending on the
 106                   -j level of the main make process, the number of package submake jobs
 107                   selected below and the number of actual CPUs present.
 108                   Example: If the main make is passed a -j4 and the submake -j
 109                   is also set to 4, we may end up with 16 parallel make processes
 110                   in the worst case.
 111
 112         config PKG_BUILD_JOBS
 113                 int
 114                 prompt "Number of package submake jobs (2-512)"
 115                 range 2 512
 116                 default 2
 117                 depends on PKG_BUILD_PARALLEL && !PKG_BUILD_USE_JOBSERVER
 118                 help
 119                   The number of jobs (-jX) to pass to packages submake.
 120
 121         config PKG_DEFAULT_PARALLEL
 122                 bool
 123                 prompt "Parallelize the default package build rule (May break build)"
 124                 depends on PKG_BUILD_PARALLEL
 125                 depends on BROKEN
 126                 default n
 127                 help
 128                   Always set the default package build rules to parallel build.
 129
 130                   WARNING: This may break build or kill your cat, as it builds packages
 131                   with multiple jobs that are probably not tested in a parallel build
 132                   environment.
 133
 134                   Only say Y if you don't mind fixing broken packages.  Before reporting
 135                   build bugs, set this to N and re-run the build.
 136
 137         comment "Stripping options"
 138
 139         choice
 140                 prompt "Binary stripping method"
 141                 default USE_STRIP   if EXTERNAL_TOOLCHAIN
 142                 default USE_STRIP   if USE_GLIBC || USE_MUSL
 143                 default USE_SSTRIP
 144                 help
 145                   Select the binary stripping method you wish to use.
 146
 147                 config NO_STRIP
 148                         bool "none"
 149                         help
 150                           This will install unstripped binaries (useful for native
 151                           compiling/debugging).
 152
 153                 config USE_STRIP
 154                         bool "strip"
 155                         help
 156                           This will install binaries stripped using strip from binutils.
 157
 158
 159                 config USE_SSTRIP
 160                         bool "sstrip"
 161                         depends on !DEBUG
 162                         depends on !USE_GLIBC
 163                         help
 164                           This will install binaries stripped using sstrip.
 165         endchoice
 166
 167         config STRIP_ARGS
 168                 string
 169                 prompt "Strip arguments"
 170                 depends on USE_STRIP
 171                 default "--strip-unneeded --remove-section=.comment --remove-section=.note" if DEBUG
 172                 default "--strip-all"
 173                 help
 174                   Specifies arguments passed to the strip command when stripping binaries.
 175
 176         config STRIP_KERNEL_EXPORTS
 177                 bool "Strip unnecessary exports from the kernel image"
 178                 help
 179                   Reduces kernel size by stripping unused kernel exports from the kernel
 180                   image.  Note that this might make the kernel incompatible with any kernel
 181                   modules that were not selected at the time the kernel image was created.
 182
 183         config USE_MKLIBS
 184                 bool "Strip unnecessary functions from libraries"
 185                 help
 186                   Reduces libraries to only those functions that are necessary for using all
 187                   selected packages (including those selected as <M>).  Note that this will
 188                   make the system libraries incompatible with most of the packages that are
 189                   not selected during the build process.
 190
 191         choice
 192                 prompt "Preferred standard C++ library"
 193                 default USE_LIBSTDCXX if USE_GLIBC
 194                 default USE_UCLIBCXX
 195                 help
 196                   Select the preferred standard C++ library for all packages that support this.
 197
 198                 config USE_UCLIBCXX
 199                         bool "uClibc++"
 200
 201                 config USE_LIBSTDCXX
 202                         bool "libstdc++"
 203         endchoice
 204
 205         comment "Hardening build options"
 206
 207         config PKG_CHECK_FORMAT_SECURITY
 208                 bool
 209                 prompt "Enable gcc format-security"
 210                 default n
 211                 help
 212                   Add -Wformat -Werror=format-security to the CFLAGS.  You can disable
 213                   this per package by adding PKG_CHECK_FORMAT_SECURITY:=0 in the package
 214                   Makefile.
 215
 216         choice
 217                 prompt "User space Stack-Smashing Protection"
 218                 default PKG_CC_STACKPROTECTOR_NONE
 219                 help
 220                   Enable GCC Stack Smashing Protection (SSP) for userspace applications
 221                 config PKG_CC_STACKPROTECTOR_NONE
 222                         bool "None"
 223                 config PKG_CC_STACKPROTECTOR_REGULAR
 224                         bool "Regular"
 225                         select SSP_SUPPORT
 226                         depends on KERNEL_CC_STACKPROTECTOR_REGULAR
 227                 config PKG_CC_STACKPROTECTOR_STRONG
 228                         bool "Strong"
 229                         select SSP_SUPPORT
 230                         depends on GCC_VERSION_4_9_LINARO
 231                         depends on KERNEL_CC_STACKPROTECTOR_STRONG
 232         endchoice
 233
 234         choice
 235                 prompt "Kernel space Stack-Smashing Protection"
 236                 default KERNEL_CC_STACKPROTECTOR_NONE
 237                 help
 238                   Enable GCC Stack-Smashing Protection (SSP) for the kernel
 239                 config KERNEL_CC_STACKPROTECTOR_NONE
 240                         bool "None"
 241                 config KERNEL_CC_STACKPROTECTOR_REGULAR
 242                         bool "Regular"
 243                 config KERNEL_CC_STACKPROTECTOR_STRONG
 244                         depends on GCC_VERSION_4_9_LINARO
 245                         bool "Strong"
 246         endchoice
 247
 248         choice
 249                 prompt "Enable buffer-overflows detection (FORTIFY_SOURCE)"
 250                 help
 251                   Enable the _FORTIFY_SOURCE macro which introduces additional
 252                   checks to detect buffer-overflows in the following standard library
 253                   functions: memcpy, mempcpy, memmove, memset, strcpy, stpcpy,
 254                   strncpy, strcat, strncat, sprintf, vsprintf, snprintf, vsnprintf,
 255                   gets.  "Conservative" (_FORTIFY_SOURCE set to 1) only introduces
 256                   checks that shouldn't change the behavior of conforming programs,
 257                   while "aggressive" (_FORTIFY_SOURCES set to 2) some more checking is
 258                   added, but some conforming programs might fail.
 259                 config PKG_FORTIFY_SOURCE_NONE
 260                         bool "None"
 261                 config PKG_FORTIFY_SOURCE_1
 262                         bool "Conservative"
 263                 config PKG_FORTIFY_SOURCE_2
 264                         bool "Aggressive"
 265         endchoice
 266
 267         choice
 268                 prompt "Enable RELRO protection"
 269                 help
 270                   Enable a link-time protection known as RELRO (Relocation Read Only)
 271                   which helps to protect from certain type of exploitation techniques
 272                   altering the content of some ELF sections. "Partial" RELRO makes the
 273                   .dynamic section not writeable after initialization, introducing
 274                   almost no performance penalty, while "full" RELRO also marks the GOT
 275                   as read-only at the cost of initializing all of it at startup.
 276                 config PKG_RELRO_NONE
 277                         bool "None"
 278                 config PKG_RELRO_PARTIAL
 279                         bool "Partial"
 280                 config PKG_RELRO_FULL
 281                         bool "Full"
 282         endchoice
 283
 284 endmenu