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John Beckett 36e0268aa6 build: find_md5 list with mod time and sorted
It was observed that the MD5 would not change after source files had been
modified, looking deeper into the build process it was discovered that
find_md5 build function makes a list of the files being built and then
passes the list to a summing utility on stdin.  The resultant MD5 is of
the file list, not the contents of the files.

The MD5 would change if the ordering of the list changed, or items were
removed or deleted.

The proposed fix is to add the modification time after the filename and
then sort the list to prevent find returning files in a different order
falsely re-triggering a rebuild. The MD5 will now change when a file is
modified or files are added/removed from the list.

Using 'T@' to show time in epoch for timezone independent behaviour.

Signed-off-by: John Beckett <john.beckett@net2edge.com>
2020-12-07 10:55:59 -10:00
.github
config libcxx[abi]: remove 2020-12-07 10:46:43 -10:00
include build: find_md5 list with mod time and sorted 2020-12-07 10:55:59 -10:00
package libcxx[abi]: remove 2020-12-07 10:46:43 -10:00
scripts build: mkhash on FreeBSD 2020-11-27 18:01:22 -10:00
target ramips: remove redundant status for USB controllers 2020-12-07 14:22:00 +01:00
toolchain glibc: update to latest 2.32 commit (BZ# 26224) 2020-12-05 20:56:44 +01:00
tools firmware-utils: tplink-safeloader: refactor meta-partition padding 2020-12-07 01:57:19 +01:00
.gitattributes
.gitignore build: improve ccache support 2020-07-11 15:19:53 +02:00
BSDmakefile
Config.in
LICENSE LICENSE: use updated GNU copy 2020-08-02 15:54:43 +02:00
Makefile build: improve ccache support 2020-07-11 15:19:53 +02:00
README.md build: require rsync 2020-12-07 18:23:13 +02:00
feeds.conf.default
rules.mk rules.mk: use -fPIC instead of -fpic on arm64 2020-12-07 18:23:13 +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 rsync

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.

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