Linux 5.9 introduces support for ZSTD ramdisk and initrd compression,
make sure we enable/disable the relevant options when building an
initramfs enabled kernel.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
When we use an external kernel tree which may not have been fully
cleaned, there may be user_headers left which do not match the target
architecture, leading to build failures for packages that do an explicit
inclusion of user_headers (such as iproute2 or iptables). Make sure we
delete them while preparing the directory.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
On non-GNU systems, zcat often does not handle gzip decompression.
Use gzip -dc like the regular unpack command
Signed-off-by: Felix Fietkau <nbd@nbd.name>
