[buildroot-mgba.git] / README

To build and use the buildroot stuff, do the following:

1) run 'make menuconfig'
2) select the packages you wish to compile
3) run 'make'
4) wait while it compiles
5) Use your shiny new root filesystem. Depending on which sort of
    root filesystem you selected, you may want to loop mount it,
    chroot into it, nfs mount it on your target device, burn it
    to flash, or whatever is appropriate for your target system.

You do not need to be root to build or run buildroot.  Have fun!

Offline build:
==============

In order to do an offline-build (not connected to the net), fetch all
selected source by issuing a
$ make source

before you disconnect.
If your build-host is never connected, then you have to copy buildroot
and your toplevel .config to a machine that has an internet-connection
and issue "make source" there, then copy the content of your dl/ dir to
the build-host.

Building out-of-tree:
=====================

Buildroot supports building out of tree with a syntax similar
to the Linux kernel. To use it, add O=<directory> to the
make command line, E.G.:

$ make O=/tmp/build

And all the output files (including .config) will be located under /tmp/build.

More finegrained configuration:
===============================

You can specify a config-file for uClibc:
$ make UCLIBC_CONFIG_FILE=/my/uClibc.config

And you can specify a config-file for busybox:
$ make BUSYBOX_CONFIG_FILE=/my/busybox.config

To use a non-standard host-compiler (if you do not have 'gcc'),
make sure that the compiler is in your PATH and that the library paths are
setup properly, if your compiler is built dynamically:
$ make HOSTCC=gcc-4.3.orig HOSTCXX=gcc-4.3-mine

Depending on your configuration, there are some targets you can use to
use menuconfig of certain packages. This includes:
$ make HOSTCC=gcc-4.3 linux-menuconfig
$ make HOSTCC=gcc-4.3 uclibc-menuconfig
$ make HOSTCC=gcc-4.3 busybox-menuconfig

Please feed suggestions, bug reports, insults, and bribes back to the
buildroot mailing list: [email protected]
Commit	Line	Data
ffde94bd EA	1	To build and use the buildroot stuff, do the following:
ffde94bd EA	2
2a7d563e	3	1) run 'make menuconfig'
957a598c	4	2) select the packages you wish to compile
c7af927d EA	5	3) run 'make'
c7af927d EA	6	4) wait while it compiles
f55d8dff	7	5) Use your shiny new root filesystem. Depending on which sort of
957a598c EA	8	root filesystem you selected, you may want to loop mount it,
	9	chroot into it, nfs mount it on your target device, burn it
	10	to flash, or whatever is appropriate for your target system.
c7af927d EA	11
c7af927d EA	12	You do not need to be root to build or run buildroot. Have fun!
ffde94bd	13
1d9fa600 BRF	14	Offline build:
	15	==============
	16
	17	In order to do an offline-build (not connected to the net), fetch all
	18	selected source by issuing a
	19	$ make source
	20
	21	before you disconnect.
	22	If your build-host is never connected, then you have to copy buildroot
	23	and your toplevel .config to a machine that has an internet-connection
	24	and issue "make source" there, then copy the content of your dl/ dir to
	25	the build-host.
	26
d1b1b4ee PK	27	Building out-of-tree:
	28	=====================
	29
	30	Buildroot supports building out of tree with a syntax similar
	31	to the Linux kernel. To use it, add O=<directory> to the
	32	make command line, E.G.:
	33
	34	$ make O=/tmp/build
	35
cd7459b4	36	And all the output files (including .config) will be located under /tmp/build.
d1b1b4ee	37
05a2211c BRF	38	More finegrained configuration:
	39	===============================
	40
	41	You can specify a config-file for uClibc:
	42	$ make UCLIBC_CONFIG_FILE=/my/uClibc.config
	43
673ee97c BRF	44	And you can specify a config-file for busybox:
	45	$ make BUSYBOX_CONFIG_FILE=/my/busybox.config
	46
fccd6603	47	To use a non-standard host-compiler (if you do not have 'gcc'),
05a2211c BRF	48	make sure that the compiler is in your PATH and that the library paths are
	49	setup properly, if your compiler is built dynamically:
	50	$ make HOSTCC=gcc-4.3.orig HOSTCXX=gcc-4.3-mine
	51
	52	Depending on your configuration, there are some targets you can use to
	53	use menuconfig of certain packages. This includes:
176afdb3	54	$ make HOSTCC=gcc-4.3 linux-menuconfig
05a2211c BRF	55	$ make HOSTCC=gcc-4.3 uclibc-menuconfig
	56	$ make HOSTCC=gcc-4.3 busybox-menuconfig
	57
9d40356a	58	Please feed suggestions, bug reports, insults, and bribes back to the
2f78767b	59	buildroot mailing list: [email protected]