# Copyright (C) 2006-2013 OpenWrt.org
+# Copyright (C) 2016 LEDE Project
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
menu "Global build settings"
+ config ALL_NONSHARED
+ bool "Select all target specific packages by default"
+ select ALL_KMODS
+ default BUILDBOT
+
+ config ALL_KMODS
+ bool "Select all kernel module packages by default"
+
config ALL
- bool "Select all packages by default"
+ bool "Select all userspace packages by default"
+ select ALL_KMODS
+ select ALL_NONSHARED
+
+ config BUILDBOT
+ bool "Set build defaults for automatic builds (e.g. via buildbot)"
default n
+ help
+ This option changes several defaults to be more suitable for
+ automatic builds. This includes the following changes:
+ - Deleting build directories after compiling (to save space)
+ - Enabling per-device rootfs support
+ ...
+
+ config SIGNED_PACKAGES
+ bool "Cryptographically signed package lists"
+ default y
comment "General build options"
default n
config BUILD_PATENTED
- default y
+ default n
bool "Compile with support for patented functionality"
help
When this option is disabled, software which provides patented functionality
iconv and GNU gettext instead of the default OpenWrt stubs. If uClibc is
used, it is also built with locale support.
- config BUILD_STATIC_TOOLS
- default n
- bool "Attempt to link host utilities statically"
- help
- Linking host utilities like sed or firmware-utils statically increases the
- portability of the generated ImageBuilder and SDK tarballs; however, it may
- fail on some Linux distributions.
-
config SHADOW_PASSWORDS
bool
- prompt "Enable shadow password support"
default y
- help
- Enable shadow password support.
config CLEAN_IPKG
bool
This removes all ipkg/opkg status data files from the target directory
before building the root filesystem.
+ config IPK_FILES_CHECKSUMS
+ bool
+ prompt "Record files checksums in package metadata"
+ default n
+ help
+ This makes file checksums part of package metadata. It increases size
+ but provides you with pkg_check command to check for flash coruptions.
+
+ config INCLUDE_CONFIG
+ bool "Include build configuration in firmware" if DEVEL
+ default n
+ help
+ If enabled, config.seed will be stored in /etc/build.config of firmware.
+
config COLLECT_KERNEL_DEBUG
bool
prompt "Collect kernel debug information"
select KERNEL_DEBUG_INFO
- default n
+ default BUILDBOT
help
This collects debugging symbols from the kernel and all compiled modules.
Useful for release builds, so that kernel issues can be debugged offline
later.
- comment "Kernel build options"
+ menu "Kernel build options"
source "config/Config-kernel.in"
+ endmenu
+
comment "Package build options"
config DEBUG
prompt "Enable IPv6 support in packages"
default y
help
- Enable IPv6 support in packages (passes --enable-ipv6 to configure scripts).
-
- config PKG_BUILD_PARALLEL
- bool
- prompt "Compile certain packages parallelized"
- default y
- help
- This adds a -jX option to certain packages that are known to behave well
- for parallel build. By default, the package make processes use the main
- jobserver, in which case this option only takes effect when you add -jX
- to the make command.
-
- If you are unsure, select N.
-
- config PKG_BUILD_USE_JOBSERVER
- bool
- prompt "Use top-level make jobserver for packages"
- depends on PKG_BUILD_PARALLEL
- default y
- help
- This passes the main make process jobserver fds to package builds,
- enabling full parallelization across different packages.
-
- Note that disabling this may overcommit CPU resources depending on the
- -j level of the main make process, the number of package submake jobs
- selected below and the number of actual CPUs present.
- Example: If the main make is passed a -j4 and the submake -j
- is also set to 4, we may end up with 16 parallel make processes
- in the worst case.
-
- config PKG_BUILD_JOBS
- int
- prompt "Number of package submake jobs (2-512)"
- range 2 512
- default 2
- depends on PKG_BUILD_PARALLEL && !PKG_BUILD_USE_JOBSERVER
- help
- The number of jobs (-jX) to pass to packages submake.
-
- config PKG_DEFAULT_PARALLEL
- bool
- prompt "Parallelize the default package build rule (May break build)"
- depends on PKG_BUILD_PARALLEL
- depends on BROKEN
- default n
- help
- Always set the default package build rules to parallel build.
-
- WARNING: This may break build or kill your cat, as it builds packages
- with multiple jobs that are probably not tested in a parallel build
- environment.
-
- Only say Y if you don't mind fixing broken packages. Before reporting
- build bugs, set this to N and re-run the build.
+ Enables IPv6 support in kernel (builtin) and packages.
comment "Stripping options"
choice
prompt "Binary stripping method"
default USE_STRIP if EXTERNAL_TOOLCHAIN
- default USE_STRIP if USE_GLIBC || USE_EGLIBC || USE_MUSL
+ default USE_STRIP if USE_GLIBC
default USE_SSTRIP
help
Select the binary stripping method you wish to use.
bool "none"
help
This will install unstripped binaries (useful for native
- compiling/debugging).
+ compiling/debugging).
config USE_STRIP
bool "strip"
config USE_SSTRIP
bool "sstrip"
- depends on !DEBUG
depends on !USE_GLIBC
- depends on !USE_EGLIBC
help
This will install binaries stripped using sstrip.
endchoice
choice
prompt "Preferred standard C++ library"
- default USE_LIBSTDCXX if USE_EGLIBC
+ default USE_LIBSTDCXX if USE_GLIBC
default USE_UCLIBCXX
help
Select the preferred standard C++ library for all packages that support this.
config PKG_CHECK_FORMAT_SECURITY
bool
prompt "Enable gcc format-security"
- default n
+ default y
help
Add -Wformat -Werror=format-security to the CFLAGS. You can disable
this per package by adding PKG_CHECK_FORMAT_SECURITY:=0 in the package
Makefile.
+ config PKG_ASLR_PIE
+ bool
+ prompt "User space ASLR PIE compilation"
+ select BUSYBOX_DEFAULT_PIE
+ default n
+ help
+ Add -fPIC to CFLAGS and -specs=hardened-build-ld to LDFLAGS.
+ This enables package build as Position Independent Executables (PIE)
+ to protect against "return-to-text" attacks. This belongs to the
+ feature of Address Space Layout Randomisation (ASLR), which is
+ implemented by the kernel and the ELF loader by randomising the
+ location of memory allocations. This makes memory addresses harder
+ to predict when an attacker is attempting a memory-corruption exploit.
+ You can disable this per package by adding PKG_ASLR_PIE:=0 in the package
+ Makefile.
+
choice
prompt "User space Stack-Smashing Protection"
- default PKG_CC_STACKPROTECTOR_NONE
+ depends on USE_MUSL
+ default PKG_CC_STACKPROTECTOR_REGULAR
help
Enable GCC Stack Smashing Protection (SSP) for userspace applications
config PKG_CC_STACKPROTECTOR_NONE
bool "None"
config PKG_CC_STACKPROTECTOR_REGULAR
bool "Regular"
- select SSP_SUPPORT
+ select GCC_LIBSSP if !USE_MUSL
depends on KERNEL_CC_STACKPROTECTOR_REGULAR
config PKG_CC_STACKPROTECTOR_STRONG
bool "Strong"
- select SSP_SUPPORT
- depends on GCC_VERSION_4_9_LINARO
+ select GCC_LIBSSP if !USE_MUSL
+ depends on !GCC_VERSION_4_8
depends on KERNEL_CC_STACKPROTECTOR_STRONG
endchoice
choice
prompt "Kernel space Stack-Smashing Protection"
- default KERNEL_CC_STACKPROTECTOR_NONE
+ default KERNEL_CC_STACKPROTECTOR_REGULAR
+ depends on USE_MUSL || !(x86_64 || i386)
help
Enable GCC Stack-Smashing Protection (SSP) for the kernel
config KERNEL_CC_STACKPROTECTOR_NONE
config KERNEL_CC_STACKPROTECTOR_REGULAR
bool "Regular"
config KERNEL_CC_STACKPROTECTOR_STRONG
- depends on GCC_VERSION_4_9_LINARO
+ depends on !GCC_VERSION_4_8
bool "Strong"
endchoice
+ config KERNEL_STACKPROTECTOR
+ bool
+ default KERNEL_CC_STACKPROTECTOR_REGULAR || KERNEL_CC_STACKPROTECTOR_STRONG
+
+ config KERNEL_STACKPROTECTOR_STRONG
+ bool
+ default KERNEL_CC_STACKPROTECTOR_STRONG
+
choice
prompt "Enable buffer-overflows detection (FORTIFY_SOURCE)"
+ default PKG_FORTIFY_SOURCE_1
help
Enable the _FORTIFY_SOURCE macro which introduces additional
checks to detect buffer-overflows in the following standard library
choice
prompt "Enable RELRO protection"
+ default PKG_RELRO_FULL
help
Enable a link-time protection known as RELRO (Relocation Read Only)
which helps to protect from certain type of exploitation techniques
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