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>

Highlight the packages which need to be installed in order to build the
docs.

Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.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>