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Gustavo Zacarias 8a14dab8bd ltrace: disable libunwind for uClibc toolchains
ltrace requires that libunwind is built with backtrace() support.
For the internal uClibc toolchain we don't enable it, and for external
uClibc toolchains we can't know.
It's also unavailable for static uClibc toolchains.
So just disable libunwind support for uClibc toolchains in general.
Fixes:
http://autobuild.buildroot.net/results/ee0/ee037a19590fb85c64f97f78f74bcfd4d7766706/

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2013-08-13 10:20:48 +02:00
arch arch/arm: add support for thumb(1) mode 2013-07-18 00:25:07 +02:00
board configs/qemu: bump relevant config versions 2013-07-30 23:28:33 +02:00
boot u-boot: remove stale patches and bump to 2013.07 2013-07-31 18:00:26 +02:00
configs configs: lock kernel version for atngw100_defconfig 2013-08-07 17:49:01 +02:00
docs manual: minor typos and formating fixes 2013-08-10 10:25:27 +02:00
fs fix white spaces 2013-07-20 21:13:57 +02:00
linux linux: update help text of BR2_LINUX_KERNEL_INSTALL_TARGET 2013-08-01 18:07:14 +02:00
package ltrace: disable libunwind for uClibc toolchains 2013-08-13 10:20:48 +02:00
support fix white spaces 2013-07-20 21:13:57 +02:00
system group file: define groups expected by udev 2013-08-01 08:06:22 +02:00
toolchain toolchain-external: don't create gdb symlink when building host-gdb 2013-08-10 21:11:12 +02:00
.defconfig buildroot: get rid of s390 support 2009-01-12 14:36:14 +00:00
.gitignore update gitignore 2013-05-04 12:41:55 +02:00
CHANGES CHANGES: update for 2013.08-rc1 2013-08-05 11:35:37 +02:00
Config.in Remove BR2_HAVE_DEVFILES 2013-07-04 09:06:33 +02:00
Config.in.legacy legacy: add a legacy option for BR2_ARM_OABI 2013-08-10 19:20:01 +02:00
COPYING clarify license and fix website license link 2009-05-08 09:29:41 +02:00
Makefile Prepare for 2013.08-rc1 2013-08-05 11:37:42 +02:00
Makefile.legacy legacy: add error target for host-pkg-config 2012-11-30 12:07:09 -08:00

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
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$ 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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