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Roman Yeryomin 2ca084ccaa build: improve ccache support
Set CCACHE_DIR to $(TOPDIR)/.ccache and CCACHE_BASEDIR to $(TOPDIR).
This allows to do clean and dirclean. Cache hit rate for test build
after dirclean is ~65%.
If CCACHE is enabled stats are printed out at the end of building process.
CCACHE_DIR config variable allows to override default, which could be useful
when sharing cache with many builds.
cacheclean make target allows to clean the cache.

Changes from v1:
- remove ccache directory using CCACHE_DIR variable
- remove ccache leftovers from sdk and toolchain make files
- introduce CONFIG_CCACHE_DIR variable
- introduce cacheclean make target

Signed-off-by: Roman Yeryomin <roman@advem.lv>
2020-07-11 15:19:53 +02:00
.github
config build: improve ccache support 2020-07-11 15:19:53 +02:00
include build: improve ccache support 2020-07-11 15:19:53 +02:00
package ltq-vmmc: update permission handling 2020-07-11 14:49:10 +02:00
scripts scripts/mkits.sh: fix remaining shellcheck warning 2020-07-11 14:42:32 +02:00
target build: improve ccache support 2020-07-11 15:19:53 +02:00
toolchain toolchain/gdb: Don't use gdb-arc 2020-07-11 13:33:28 +02:00
tools firmware-utils: mkfwimage: fix memcpy and strncpy usage 2020-07-11 13:33:28 +02:00
.gitattributes
.gitignore build: improve ccache support 2020-07-11 15:19:53 +02:00
BSDmakefile
Config.in
LICENSE
Makefile build: improve ccache support 2020-07-11 15:19:53 +02:00
README build: switch to Python 3 2019-07-26 08:09:16 +02:00
feeds.conf.default feeds: add freifunk feed 2020-06-24 14:58:17 +02:00
rules.mk build: improve ccache support 2020-07-11 15:19:53 +02:00

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