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OpenWRT firmware for routers
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Felix Fietkau 3bbb927728 build: Allow kernel modules to set build ID debug symbol 
This change adds support for specifying a build ID for kernel modules.
This is done by setting PKG_BUILD_ID to a hexadecimal string, which will
then be passed to the kernel linker. In addition, when this flag is set,
the build ID debug symbol (.note.gnu.build-id) will not be stripped from
the kernel module. This symbol is exported in sysfs by the kernel (if
the kernel is compiled with CONFIG_KALLSYMS) and so can be used to
uniquely identify a version of a kernel module in a running kernel. This
is useful for keeping track of different versions of a module when doing
experiments and development.

Modules that specify the build ID will be ~100 bytes larger (depending
on the length of the build ID specified). There is no size difference
for kernel modules that do not set this variable.

Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>

SVN-Revision: 47290
 		9 years ago
config kernel: add support for KERNEL_CGROUP_PIDS 9 years ago
docs build: Prevent more gzip timestamps 9 years ago
include build: Allow kernel modules to set build ID debug symbol 9 years ago
package busybox: fix non-portable invocation of mktemp 9 years ago
scripts build: Allow kernel modules to set build ID debug symbol 9 years ago
target kernel: backport some bcma header file definitions from wireless-testing 9 years ago
toolchain uClibc: enable xattr support to make feature sets of libc implementations closer to each other 9 years ago
tools tools: quilt: fix perl interpreter line (#20802) 9 years ago
.gitattributes add .gitattributes to prevent the git autocrlf option from messing with CRLF/LF in files 12 years ago
.gitignore build: add integration for managing opkg package feed keys 9 years ago
BSDmakefile add missing copyright header 17 years ago
Config.in scripts/config: sync with linux upstream 9 years ago
LICENSE finally move buildroot-ng to trunk 8 years ago
Makefile Makefile: move the cleaning of staging_dir/target* from dirclean to clean 9 years ago
README Add 'subversion' build dependency to README 10 years ago
feeds.conf.default feeds.conf.default: add new targets feed 9 years ago
rules.mk build: Allow kernel modules to set build ID debug symbol 9 years ago

README 

This is the buildsystem for the OpenWrt Linux distribution.

Please use "make menuconfig" to configure your appreciated
configuration for the toolchain and firmware.

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

Run "./scripts/feeds update -a" to get all the latest package definitions
defined in feeds.conf / feeds.conf.default respectively
and "./scripts/feeds install -a" to install symlinks of all of them into
package/feeds/.

Use "make menuconfig" to configure your image.

Simply running "make" will build your firmware.
It will download all sources, build the cross-compile toolchain, 
the kernel and all choosen applications.

You can use "scripts/flashing/flash.sh" for remotely updating your embedded
system via tftp.

The OpenWrt system is documented in docs/. You will need a LaTeX distribution
and the tex4ht package to build the documentation. Type "make -C docs/" to build it.

To build your own firmware you need to have access to a Linux, BSD or MacOSX system
(case-sensitive filesystem required). Cygwin will not be supported because of
the lack of case sensitiveness in the file system.


Sunshine!
	Your OpenWrt Project
	http://openwrt.org