OpenWRT firmware for routers
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Julien Dusser df0bd42fde build: add hardened builds with PIE (ASLR) support
Introduce a configuration option to build a "hardened" OpenWrt with
ASLR PIE support.

Add new option PKG_ASLR_PIE to enable Address Space Layout Randomization (ASLR)
by building Position Independent Executables (PIE). This new option protects
against "return-to-text" attacks.

Busybox need a special care, link is done with ld, not gcc, leading to
unknown flags. Set BUSYBOX_DEFAULT_PIE instead and disable PKG_ASLR_PIE.

If other failing packages were found, PKG_ASLR_PIE:=0 should be added to
their Makefiles.

Original Work by: Yongkui Han <yonhan@cisco.com>
Signed-off-by: Julien Dusser <julien.dusser@free.fr>
6 years ago
.github merge: github: use OpenWrt in issue/pr templates 6 years ago
config build: add hardened builds with PIE (ASLR) support 6 years ago
include build: add hardened builds with PIE (ASLR) support 6 years ago
package build: add hardened builds with PIE (ASLR) support 6 years ago
scripts metadata: do not emit broken kconfig dependency statements 6 years ago
target ar71xx: add ew-balin platform from Embedded Wireless 6 years ago
toolchain kernel-headers: adjust PKG_ variables when using git clone method 6 years ago
tools tools/tar: update to 1.30 6 years ago
.gitattributes add .gitattributes to prevent the git autocrlf option from messing with CRLF/LF in files 12 years ago
.gitignore .gitignore: add .project & .cproject for eclipse users 6 years ago
BSDmakefile add missing copyright header 17 years ago
Config.in merge: base: update base-files and basic config 6 years ago
LICENSE finally move buildroot-ng to trunk 8 years ago
Makefile merge: base: update base-files and basic config 6 years ago
README merge: base: update base-files and basic config 6 years ago
feeds.conf.default feeds: switch git.lede-project.org URLs to git.openwrt.org 6 years ago
rules.mk rules.mk: drop `include_mk` build rule 6 years ago

README

This is the buildsystem for the OpenWrt Linux distribution.

Please use "make menuconfig" to choose your preferred
configuration for the toolchain and firmware.

You need to have installed gcc, binutils, bzip2, flex, python, perl, make,
find, grep, diff, unzip, gawk, getopt, subversion, libz-dev and libc headers.

Run "./scripts/feeds update -a" to get all the latest package definitions
defined in feeds.conf / feeds.conf.default respectively
and "./scripts/feeds install -a" to install symlinks of all of them into
package/feeds/.

Use "make menuconfig" to configure your image.

Simply running "make" will build your firmware.
It will download all sources, build the cross-compile toolchain, 
the kernel and all choosen applications.

To build your own firmware you need to have access to a Linux, BSD or MacOSX system
(case-sensitive filesystem required). Cygwin will not be supported because of
the lack of case sensitiveness in the file system.


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