$ tce-load -wi compiletc perl5 bash ncursesw-dev bc glibc_apps elfutils-dev gettext git

$ mkdir $HOME/Downloads
$ cd $HOME/Downloads
$ wget http://repo.tinycorelinux.net/15.x/x86_64/release/src/kernel/linux-6.6.8-patched.txz
$ wget http://repo.tinycorelinux.net/15.x/x86_64/release/src/kernel/config-6.6.8-tinycore64
$ wget http://tinycorelinux.net/15.x/x86_64/release/src/kernel/Module.symvers-6.6.8-tinycore64.gz
$ wget http://tinycorelinux.net/15.x/x86_64/release/src/kernel/System.map-6.6.8-tinycore64.gz
$ gzip -d *.gz
$ tar -xvf linux-6.6.8-patched.txz 
$ cd linux-6.6.8
$ make mrproper
$ cp ../config-6.6.8-tinycore64 .config
$ cp ../Module.symvers-6.6.8-tinycore64 Module.symvers
$ cp ../System.map-6.6.8-tinycore64 System.map
$ make oldconfig
$ make prepare
$ make modules_prepare
$ sudo ln -s /home/bruno/Downloads/linux-6.6.8 /lib/modules/6.6.8-tinycore64/build
$ cd .. [back to $HOME/Downloads]
$ git clone https://github.com/morrownr/88x2bu-20210702.git
$ cd 88x2bu-20210702
$ make clean
$ make [3m 28.19s]
$ gzip 88x2bu.ko
the prize is $HOME/Downloads/88x2bu-20210702/88x2bu.ko.gz