mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-12 16:07:30 +00:00
2042365acf
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>
25 lines
601 B
ReStructuredText
25 lines
601 B
ReStructuredText
Reproducible builds
|
|
===================
|
|
|
|
In order to achieve reproducible builds, timestamps used in the U-Boot build
|
|
process have to be set to a fixed value.
|
|
|
|
This is done using the SOURCE_DATE_EPOCH environment variable which specifies
|
|
the number of seconds since 1970-01-01T00:00:00Z.
|
|
|
|
Example
|
|
-------
|
|
|
|
To build the sandbox with 2023-01-01T00:00:00Z as timestamp we can use:
|
|
|
|
.. code-block:: bash
|
|
|
|
make sandbox_defconfig
|
|
SOURCE_DATE_EPOCH=1672531200 make
|
|
|
|
This date is shown when we launch U-Boot:
|
|
|
|
.. code-block:: console
|
|
|
|
./u-boot -T
|
|
U-Boot 2023.01 (Jan 01 2023 - 00:00:00 +0000)
|