Editing Kernel Manual Build (section)

=== Using your current Debian kernel configuration as a starting point ===

Alternatively, you can use the configuration from a Debian-built kernel that you already have installed by copying the `/boot/config-*` file to `.config` and then running `make oldconfig` to only answer new questions.

If you do this, ensure that you modify the configuration to set:

{{{
CONFIG_SYSTEM_TRUSTED_KEYS = ""
}}}

otherwise the build may fail:

{{{
make[4]: *** No rule to make target 'debian/certs/test-signing-certs.pem', needed by 'certs/x509_certificate_list'.  Stop.
make[4]: *** Waiting for unfinished jobs....
}}}