I tried to compile the SDK RUT9_R_GPL_00.07.02.7.tar.gz on Ubuntu 20.04 LTS. And I got the error below
Configuring call_utilities.
Collected errors:
* pkg_hash_check_unresolved: cannot find dependency luci-lib-jsonc for vuci-rpc-core
* pkg_hash_check_unresolved: cannot find dependency luci-lib-nixio for vuci-rpc-core
* pkg_hash_check_unresolved: cannot find dependency luci-lib-ip for vuci-rpc-core
* pkg_hash_check_unresolved: cannot find dependency rpcd-mod-rrdns for vuci-rpc-core
* pkg_hash_fetch_best_installation_candidate: Packages for vuci-rpc-core found, but incompatible with the architectures configured
* satisfy_dependencies_for: Cannot satisfy the following dependencies for wireguard:
* luci-lib-jsonc
* luci-lib-nixio
* luci-lib-ip
* rpcd-mod-rrdns
* opkg_install_cmd: Cannot install package wireguard.
make[2]: *** [package/Makefile:69: package/install] Error 255
make[2]: Leaving directory '/data/sdk/RUT9xx_07/rutos-ath79-rut9-gpl'
make[1]: *** [package/Makefile:109: /data/sdk/RUT9xx_07/rutos-ath79-rut9-gpl/staging_dir/target-mips_24kc_musl/stamp/.package_install] Error 2
make[1]: Leaving directory '/data/sdk/RUT9xx_07/rutos-ath79-rut9-gpl'
make: *** [/data/sdk/RUT9xx_07/rutos-ath79-rut9-gpl/include/toplevel.mk:234: world] Error 2
Any help would be appreciated