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Hauke Mehrtens 19cbac7d26 buildsystem: Make PIE ASLR option tristate
This tristate choose allows to select to build only some applications
with PIE enabled. On MIPS binaries are getting about 30% bigger when PIE
is activated for the, which is a huge increase.

Network exposed applications like dnsmasq should then be build with PIE
enabled, but some applications which are normally not parsing data from
the network do not have it activated. The regular option should give a
good trade off between extra flash and RAM memory usage and security.

This changes the default from building no applications with PIE to build
some specifically marked applications with PIE enabled. This option is
only activated for targets with bigger flash and RAM to not consume
extra memory on the very small targets. On SDK builds the Regular option
should always be selected, because some tiny targets share the
applications with big targets and only the images for the tiny targets
should contain the none PIE applications, but the images for the normal
targets should use PIE. The shared packages should always use PIE when
it should be normally activated.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Acked-by: Petr Štetiar <ynezz@true.cz>
2020-01-13 15:34:36 +01:00
.github build: Update README & github help 2018-07-08 09:41:53 +01:00
config buildsystem: Make PIE ASLR option tristate 2020-01-13 15:34:36 +01:00
include buildsystem: Make PIE ASLR option tristate 2020-01-13 15:34:36 +01:00
package ethtool: bump to 5.4 2020-01-12 22:19:37 +01:00
scripts scripts/arm-magic.sh: switch to /bin/sh 2020-01-02 23:59:20 +01:00
target generic: update config-4.14 2020-01-12 16:27:33 +01:00
toolchain toolchain/gcc: Backport patch to fix unconditional MULTIARCH_DIRNAME 2019-12-23 00:04:18 +01:00
tools firmware-utils: mkfwimage: add support for Ubiquiti SW devices 2020-01-12 14:12:50 +01:00
.gitattributes add .gitattributes to prevent the git autocrlf option from messing with CRLF/LF in files 2012-05-08 13:30:49 +00:00
.gitignore gitignore: ignore patches in OpenWrt root directory 2019-11-06 00:27:55 +01:00
BSDmakefile add missing copyright header 2007-02-26 01:05:09 +00:00
Config.in merge: base: update base-files and basic config 2017-12-08 19:41:18 +01:00
LICENSE
Makefile build: add buildinfo as single Makefile target 2019-10-17 14:01:33 +02:00
README build: switch to Python 3 2019-07-26 08:09:16 +02:00
feeds.conf.default feeds: switch git.lede-project.org URLs to git.openwrt.org 2018-01-16 16:59:22 +01:00
rules.mk rules.mk: remove "$(STAGING_DIR)/include" 2019-11-02 20:51:56 +01:00

README

  _______                     ________        __
 |       |.-----.-----.-----.|  |  |  |.----.|  |_
 |   -   ||  _  |  -__|     ||  |  |  ||   _||   _|
 |_______||   __|_____|__|__||________||__|  |____|
          |__| W I R E L E S S   F R E E D O M
 -----------------------------------------------------

This is the buildsystem for the OpenWrt Linux distribution.

To build your own firmware you need a Linux, BSD or MacOSX system (case
sensitive filesystem required). Cygwin is unsupported because of the lack
of a case sensitive file system.

You need gcc, binutils, bzip2, flex, python3.5+, perl, make, find, grep, diff,
unzip, gawk, getopt, subversion, libz-dev and libc headers installed.

1. Run "./scripts/feeds update -a" to obtain all the latest package definitions
defined in feeds.conf / feeds.conf.default

2. Run "./scripts/feeds install -a" to install symlinks for all obtained
packages into package/feeds/

3. Run "make menuconfig" to select your preferred configuration for the
toolchain, target system & firmware packages.

4. Run "make" to build your firmware. This will download all sources, build
the cross-compile toolchain and then cross-compile the Linux kernel & all
chosen applications for your target system.

Sunshine!
	Your OpenWrt Community
	http://www.openwrt.org