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Paul Spooren 0c87304d2b scripts: add size_compare.sh 
As package size changes are a continuous topic on the mailing list this
scripts helps developers to compare their local package modifications
against latest upstream.

The script downloads the latest package indexes based on env variables
or the `.config` file. The script compares the actual installed size
(data.tar.gz) or the IPK package size.

An example output is found below:

```
user@dawn:~/src/openwrt/openwrt$ ./scripts/size_compare.sh
Compare packages of ath79/tiny/mips_24kc:
dropbear busybox iw ubus

Checking configuration difference
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   554  100   554    0     0    336      0  0:00:01  0:00:01 --:--:--   336

 --- start config diff ---
--- /tmp/config.DDjwVh-LOCAL	2020-11-23 09:08:28.913203068 -1000
+++ /tmp/config.DDjwVh-UPSTREAM	2020-11-23 09:08:36.369240887 -1000
@@ -1,5 +1,9 @@
+CONFIG_ALL_KMODS=y
+CONFIG_ALL_NONSHARED=y
 CONFIG_AUTOREBUILD=y
+CONFIG_AUTOREMOVE=y
--- 8< ---
 CONFIG_BINARY_FOLDER=""
+CONFIG_BUILDBOT=y
+CONFIG_TARGET_ALL_PROFILES=y
 CONFIG_TARGET_ROOTFS_DIR=""
 CONFIG_USE_SSTRIP=y
 CONFIG_USE_UCLIBCXX=y
 --- end config diff ---

Checking installed size

Fetching latest package indexes...
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 80634  100 80634    0     0  33499      0  0:00:02  0:00:02 --:--:-- 33485
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 54082  100 54082    0     0  24252      0  0:00:02  0:00:02 --:--:-- 24252

Comparing package sizes...
Change 	Local	Remote 	Package
+271	51386	51115	base-files
+123	705241	705118	bnx2-firmware
+86	17209	17123	fstools
+22	47989	47967	procd
+21	208311	208290	busybox
+19	67181	67162	netifd

```

I plan to integrate this script into the CI so we have a summary how
sizes change over different architectures.

Signed-off-by: Paul Spooren <mail@aparcar.org>
2020-11-24 18:18:48 -10:00
.github build: Update README & github help 2018-07-08 09:41:53 +01:00
config Revert "refpolicy: add variant that builds modular policy" 2020-11-22 15:20:35 +00:00
include kernel: bump 5.4 to 5.4.79 2020-11-24 15:36:59 +01:00
package ath10k-ct: update to latest version 2020-11-24 17:43:15 +01:00
scripts scripts: add size_compare.sh 2020-11-24 18:18:48 -10:00
target imagebuilder: fix partition signature 2020-11-24 14:46:05 -10:00
toolchain musl: handle wcsnrtombs destination buffer overflow (CVE-2020-28928) 2020-11-20 13:24:48 +01:00
tools treewide: update email address of Tomasz Maciej Nowak 2020-11-24 15:39:07 +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 rules.mk: simplify FAKEROOT command line 2020-10-30 00:39:09 +00:00

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