mirror of
https://git.busybox.net/buildroot.git
synced 2024-12-13 15:23:27 +08:00
32cec3be97
by using this standard extension `adoc`, these files are rendered on gitlab & github Signed-off-by: Francois Perrad <francois.perrad@gadz.org> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
49 lines
2.3 KiB
Plaintext
49 lines
2.3 KiB
Plaintext
// -*- mode:doc; -*-
|
|
// vim: set syntax=asciidoc:
|
|
|
|
==== Using the generated toolchain outside Buildroot
|
|
|
|
You may want to compile, for your target, your own programs or other
|
|
software that are not packaged in Buildroot. In order to do this you
|
|
can use the toolchain that was generated by Buildroot.
|
|
|
|
The toolchain generated by Buildroot is located by default in
|
|
+output/host/+. The simplest way to use it is to add
|
|
+output/host/bin/+ to your PATH environment variable and then to
|
|
use +ARCH-linux-gcc+, +ARCH-linux-objdump+, +ARCH-linux-ld+, etc.
|
|
|
|
Alternatively, Buildroot can also export the toolchain and the development
|
|
files of all selected packages, as an SDK, by running the command
|
|
+make sdk+. This generates a tarball of the content of the host directory
|
|
+output/host/+, named +<TARGET-TUPLE>_sdk-buildroot.tar.gz+ (which can be
|
|
overriden by setting the environment variable +BR2_SDK_PREFIX+) and
|
|
located in the output directory +output/images/+.
|
|
|
|
This tarball can then be distributed to application developers, when
|
|
they want to develop their applications that are not (yet) packaged as
|
|
a Buildroot package.
|
|
|
|
Upon extracting the SDK tarball, the user must run the script
|
|
+relocate-sdk.sh+ (located at the top directory of the SDK), to make
|
|
sure all paths are updated with the new location.
|
|
|
|
Alternatively, if you just want to prepare the SDK without generating
|
|
the tarball (e.g. because you will just be moving the +host+ directory,
|
|
or will be generating the tarball on your own), Buildroot also allows
|
|
you to just prepare the SDK with +make prepare-sdk+ without actually
|
|
generating a tarball.
|
|
|
|
For your convenience, by selecting the option
|
|
+BR2_PACKAGE_HOST_ENVIRONMENT_SETUP+, you can get a
|
|
+environment-setup+ script installed in +output/host/+ and therefore
|
|
in your SDK. This script can be sourced with
|
|
+. your/sdk/path/environment-setup+ to export a number of environment
|
|
variables that will help cross-compile your projects using the
|
|
Buildroot SDK: the +PATH+ will contain the SDK binaries, standard
|
|
_autotools_ variables will be defined with the appropriate values, and
|
|
+CONFIGURE_FLAGS+ will contain basic +./configure+ options to
|
|
cross-compile _autotools_ projects. It also provides some useful
|
|
commands. Note however that once this script is sourced, the
|
|
environment is setup only for cross-compilation, and no longer for
|
|
native compilation.
|