At this point, clang can be used on both 32bit and 64bit targets without
issue. Make note of logic we have that will inform clang of the
architecture to build for.
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Signed-off-by: Milan P. Stanić <mps@arvanta.net>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Title underlines should match the length of the title. Unfortunately
docutils only catches underlines that are too short.
Add some missing empty lines after titles.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Signed-off-by: Milan P. Stanić <mps@arvanta.net>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reformat and keep ncurses-dev needed for 'make menuconfig'
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
This documentation briefly explains what is a compilation database,
and how to use the script to generate one.
This is not a portage, as there was no original documentation in the
Linux sources.
Acknowledge the documentation in the script's header and in doc/build
index.
Signed-off-by: Joao Marcos Costa <jmcosta944@gmail.com>
Tested-by: Joao Paulo Goncalves <joao.goncalves@toradex.com>
When building in a portage chroot, we do not have the environment needed
to build pylibfdt. It is instead build as a separate package.
Provide a build option to tell U-Boot to skip this part of the build. We
still need it to use binman, etc. but don't need it to build its
dependencies.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
[s/build bytes/builds bytes in tools.rst]
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
When build Xen target with Clang, the linker reports failure.
This patch adds the related info in the documentation as a known issue
and gives details for how to dismiss the building failure with Clang.
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Mention that HTML pages are published at https://u-boot.readthedocs.io/
and that the file .readthedocs.yml controls the build process.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This is quite a useful thing to use when building since it avoids small
size changes between commits. Add a -r flag for it.
Also undefine CONFIG_LOCALVERSION_AUTO since this appends the git hash
to the version string, causing every build to be slightly different.
Signed-off-by: Simon Glass <sjg@chromium.org>
Move the README section to the HTML documentation.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Given that we can use Kconfig logic directly to see if we have a program
available on the host or not, change from passing NO_SDL to instead
controlling CONFIG_SANDBOX_SDL in Kconfig directly. Introduce
CONFIG_HOST_HAS_SDL as the way to test for sdl2-config and default
CONFIG_SANDBOX_SDL on if we have that, or not.
Cc: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Convert the buildman documentation to rST format and include it in the
'build' section.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Quentin Schulz <foss+uboot@0leil.net>
Packages python3-filelock python3-pytest-xdist as required to run
'make tests'. Add them to the required packages list in the documentation.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
LTO (Link-Time Optimisation) is an very useful feature which can
significantly reduce the size of U-Boot binaries. So far it has been
made available for selected ARM boards and sandbox.
However, incremental builds are much slower when LTO is used. For example,
an incremental build of sandbox takes 2.1 seconds on my machine, but 6.7
seconds with LTO enabled.
Add a NO_LTO parameter to the build, similar to NO_SDL, so it can be
disabled during development if needed, for faster builds.
Add some documentation about LTO while we are here.
Signed-off-by: Simon Glass <sjg@chromium.org>
The following Python packages are used by U-Boot, too:
* python3-asteval
* python3-subunit
* python3-testtools
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
At present U-Boot always builds dtc if CONFIG_OF_CONTROL is defined, even
when DTC is provided. The built dtc is not actually used, so this is a
waste of time.
Update the Makefile logic to build dtc only if one is not provided to the
build with the DTC variable. Add documentation to explain this.
This saves about 3.5 seconds of elapsed time on a clean build of
sandbox_spl for me.
Signed-off-by: Simon Glass <sjg@chromium.org>
These are out of date. Update them and point to the existing build
instructions to avoid duplication. Add a few that are missing.
Signed-off-by: Simon Glass <sjg@chromium.org>
Integrate the Dockerfile from
https://source.denx.de/u-boot/gitlab-ci-runner.git as of
commit bc6130d572f1 ("Dockerfile: Remove high UID/GID") and introduce a
short rST on how to build the container.
Cc: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Tom Rini <trini@konsulko.com>
* Move README.clang to doc/build/clang.rst and reformat as
reStructeredText.
* Indicate that -ffixed-r9 and -ffixed-x18 are used to reserve registers
for gd.
* Minor editing.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This adds a reST document for how to build U-Boot host tools,
including information for both Linux and Windows.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
