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Thomas Petazzoni 4a9a21b95c Makefile: remove the graphs/ dir on 'make clean'
Currently, a 'make clean' leaves the graphs/ subdirectory in the
output directory. This commit defines a GRAPHS_DIR variable, used by
the different graph-generating targets, and which gets cleaned up in
the 'clean' target.

[Thomas: use the new GRAPHS_DIR variable in more places, as suggested
by Yann.]

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2015-04-03 14:19:18 +02:00
arch arch/sparc: doesn't have atomics 2015-03-30 23:30:28 +02:00
board configs: add Freescale SABRE Auto board support 2015-04-01 23:34:17 +02:00
boot boot/gummiboot: drop largefile depends 2015-04-01 22:44:15 +02:00
configs configs: add Freescale SABRE Auto board support 2015-04-01 23:34:17 +02:00
docs support/download: always fail when there's no hash 2015-04-03 14:08:54 +02:00
fs fs/common: build host-xz when xz compression is used 2015-03-09 14:10:13 +01:00
linux packages: indentation cleanup 2015-03-31 13:57:41 +02:00
package Makefile: remove the graphs/ dir on 'make clean' 2015-04-03 14:19:18 +02:00
support support/download: warn when there's no .hash file 2015-04-03 14:08:54 +02:00
system system: drop largefile depends 2015-04-01 22:44:06 +02:00
toolchain toolchain-common: drop BR2_LARGEFILE 2015-04-01 22:53:41 +02:00
.defconfig arch: kill avr32 2015-02-14 17:39:50 +01:00
.gitignore update gitignore 2013-05-04 12:41:55 +02:00
CHANGES Update for 2015.02 2015-03-01 22:26:12 +01:00
Config.in Config.in: remove BR2_DEPRECATED_SINCE_2014_02 2015-03-04 22:13:40 +01:00
Config.in.legacy package/gtk2-themes: remove 2015-04-01 22:39:02 +02:00
COPYING clarify license and fix website license link 2009-05-08 09:29:41 +02:00
Makefile Makefile: remove the graphs/ dir on 'make clean' 2015-04-03 14:19:18 +02:00
Makefile.legacy Makefile.legacy: fix recursive invocation with BUILDROOT_DL_DIR and _CONFIG 2014-02-11 08:14:57 +01:00
README docs: Move README file to root 2014-03-03 21:28:39 +01:00

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

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