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OpenWrt Source Repository
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Tony Ambardar 2f0d672088 bpftools: add utility and library packages supporting eBPF usage 
Add support for building bpftool and libbpf from the latest 5.8.3 kernel
sources, ensuring up-to-date functionality and fixes. Both are written to
be backwards compatible, which simplfies build and usage across different
OpenWRT image kernels.

'bpftool' is the primary userspace tool widely used for introspection and
manipulation of eBPF programs and maps. Two variants are built: a 'full'
version which supports object disassembly and depends on libbfd/libopcodes
(total ~500KB); and a 'minimal' version without disassembly functions and
dependencies. The default 'minimal' variant is otherwise fully functional,
and both are compiled using LTO for further (~30KB) size reductions.

'libbpf' provides shared/static libraries and dev files needed for building
userspace programs that perform eBPF interaction.

Several cross-compilation and build-failure problems are addressed by new
patches and ones backported from farther upstream:

  * 001-libbpf-ensure-no-local-symbols-counted-in-ABI-check.patch
  * 002-libbpf-fix-build-failure-from-uninitialized-variable.patch
  * 003-bpftool-allow-passing-BPFTOOL_VERSION-to-make.patch
  * 004-v5.9-bpftool-use-only-ftw-for-file-tree-parsing.patch

Signed-off-by: Tony Ambardar <itugrok@yahoo.com>
2020-08-31 12:23:59 +01:00
.github build: Update README & github help 2018-07-08 09:41:53 +01:00
config kernel: add options needed for SELinux 2020-08-31 01:15:41 +01:00
include build: switch VERSION_REPO to HTTPS 2020-08-31 11:26:10 +01:00
package bpftools: add utility and library packages supporting eBPF usage 2020-08-31 12:23:59 +01:00
scripts build: store granular timestamps in packages 2020-08-31 11:18:06 +01:00
target build: add whatdepends target to imagebuilder 2020-08-31 11:18:24 +01:00
toolchain musl: add common glibc extention for nftw 2020-08-31 12:23:59 +01:00
tools treewide: https for downloads.openwrt.org sources 2020-08-31 11:26:10 +01:00
.gitattributes
.gitignore build: improve ccache support 2020-07-11 15:19:53 +02:00
BSDmakefile
Config.in
feeds.conf.default feeds: add freifunk feed 2020-06-24 14:58:17 +02:00
LICENSE LICENSE: use updated GNU copy 2020-08-02 15:54:43 +02:00
logo.svg README: port to 21st century 2020-08-02 15:44:40 +02:00
Makefile build: improve ccache support 2020-07-11 15:19:53 +02:00
README.md README: port to 21st century 2020-08-02 15:44:40 +02:00
rules.mk tools: add fakeroot 2020-08-10 10:09:55 +02:00

README.md

OpenWrt logo

OpenWrt Project is a Linux operating system targeting embedded devices. Instead of trying to create a single, static firmware, OpenWrt provides a fully writable filesystem with package management. This frees you from the application selection and configuration provided by the vendor and allows you to customize the device through the use of packages to suit any application. For developers, OpenWrt is the framework to build an application without having to build a complete firmware around it; for users this means the ability for full customization, to use the device in ways never envisioned.

Sunshine!

Development

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

Requirements

You need the following tools to compile OpenWrt, the package names vary between distributions. A complete list with distribution specific packages is found in the Build System Setup documentation.

gcc binutils bzip2 flex python3 perl make find grep diff unzip gawk getopt
subversion libz-dev libc-dev

Quickstart

  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 GNU/Linux kernel & all chosen applications for your target system.

Related Repositories

The main repository uses multiple sub-repositories to manage packages of different categories. All packages are installed via the OpenWrt package manager called opkg. If you're looking to develop the web interface or port packages to OpenWrt, please find the fitting repository below.

Support Information

For a list of supported devices see the OpenWrt Hardware Database

Documentation

Support Community

  • Forum: For usage, projects, discussions and hardware advise.
  • Support Chat: Channel #openwrt on freenode.net.

Developer Community

License

OpenWrt is licensed under GPL-2.0