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Mike Frysinger 0df02e1233 hostcc/hostcxx: fix noccache variant setting
The current code accidentally sets up HOSTCC_NOCCACHE and HOSTCXX_NOCCACHE
only when the respective HOSTCC or HOSTCXX values are not set.  So if you
do something like:
	make HOSTCC=gcc menuconfig
The build fails because HOSTCC_NOCCACHE is not set anywhere.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2011-03-28 10:29:35 +02:00
board
boot grub: fix download URL 2011-03-13 21:42:06 +01:00
configs
docs website: add google analytics for statistics 2011-03-01 23:20:16 +01:00
fs squashfs: re-add legacy lzma support 2011-03-05 15:04:03 +01:00
linux linux: use 2.6.38 by default 2011-03-15 09:11:23 +01:00
package external toolchain: Only prefix path if specified 2011-03-28 10:00:37 +02:00
scripts pkg-stats: add statistics about number of patches per package 2011-02-28 23:04:16 +01:00
target initial support for Blackfin processors 2011-02-07 14:29:19 +01:00
toolchain kernel-headers: bump 2.6.37.x / 2.6.38.x stable versions 2011-03-24 13:11:52 +01:00
.defconfig
.gitignore
CHANGES CHANGES: update with recent changes 2011-03-28 00:13:28 +02:00
Config.in Config.in: use kent.dl.sourceforge.net by default 2011-02-09 23:09:48 +01:00
COPYING
Makefile hostcc/hostcxx: fix noccache variant setting 2011-03-28 10:29:35 +02:00

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

Please feed suggestions, bug reports, insults, and bribes back to the
buildroot mailing list: buildroot@uclibc.org