Commit 114ff6fe authored by Dan Li's avatar Dan Li Committed by Masahiro Yamada
Browse files

Documentation: kbuild: Add description of git for reproducible builds 



The status of git will affect the final compilation result, add it to
the documentation of reproducible builds.

Signed-off-by: default avatarDan Li <ashimida@linux.alibaba.com>
Signed-off-by: default avatarMasahiro Yamada <masahiroy@kernel.org>
parent 5c1df62c

Documentation/kbuild/reproducible-builds.rst

+10 −0
Original line number Diff line number Diff line
@@ -119,6 +119,16 @@ To avoid this, you can make the vDSO different for different 
kernel versions by including an arbitrary string of "salt" in it.

This is specified by the Kconfig symbol ``CONFIG_BUILD_SALT``.



Git

---



Uncommitted changes or different commit ids in git can also lead

to different compilation results. For example, after executing

``git reset HEAD^``, even if the code is the same, the

``include/config/kernel.release`` generated during compilation

will be different, which will eventually lead to binary differences.

See ``scripts/setlocalversion`` for details.



.. _KBUILD_BUILD_TIMESTAMP: kbuild.html#kbuild-build-timestamp

.. _KBUILD_BUILD_USER and KBUILD_BUILD_HOST: kbuild.html#kbuild-build-user-kbuild-build-host

.. _KCFLAGS: kbuild.html#kcflags