[开发杂项][编译]linux driver dkms

Posted 2021-09-10 xcy6666

what is dkms

• Dynamic Kernel Module Support (DKMS) is a program/framework that enables generating Linux kernel modules whose sources generally reside outside the kernel source tree.
• written by the Linux Engineering Team at Dell in 2003
• included in many distributions, such as Ubuntu, Debian, Fedora, SUSE, Mageia and Arch
• supports both the rpm and deb package
• GNU General Public License (GPL) v2

source required

source code + out-of-tree Makefile + dkms.conf

PACKAGE_NAME="v4l2loopback"
PACKAGE_VERSION="0.12.5"

# Items below here should not have to change with each driver version
MAKE[0]="make KERNEL_DIR=${kernel_source_dir} all"
CLEAN="make clean"

BUILT_MODULE_NAME[0]="$PACKAGE_NAME"
DEST_MODULE_LOCATION[0]="/extra"

REMAKE_INITRD="no"
AUTOINSTALL="yes"

usage

version=0.12.5
# download and extract the tarball (tar requires superuser privileges)
curl -L https://github.com/umlaeute/v4l2loopback/archive/v${version}.tar.gz | tar xvz -C /usr/src #ls /usr/src/v4l2loopback-0.12.5/
# build and install the DKMS-module (requires superuser privileges)
dkms add -m v4l2loopback -v ${version}
dkms build -m v4l2loopback -v ${version}
dkms install -m v4l2loopback -v ${version}

more links

https://help.ubuntu.com/community/DKMS

https://help.ubuntu.com/community/Kernel/DkmsDriverPackage#Configure_DKMS

https://wiki.kubuntu.org/Kernel/Dev/DKMSPackaging

https://docs.01.org/clearlinux/latest/guides/kernel/kernel-modules-dkms.html#build-install-and-load-an-out-of-tree-module