Package: dkms Version: 2.3-3 Severity: important When I install package wireguard-dkms, it fails to compile the dkms.
I used the following install command: $ echo "deb http://deb.debian.org/debian/ unstable main" > /etc/apt/sources.list.d/unstable.list $ printf 'Package: *\nPin: release a=unstable\nPin-Priority: 150\n' > /etc/apt/preferences.d/limit-unstable $ apt update $ apt install linux-headers-next-sunxi wireguard The relevent dpkg output is: Loading new wireguard-0.0.20180718-1 DKMS files... dpkg: warning: version '3.4.113-sun8i 4.14.18' has bad syntax: invalid character in revision number Building for 4.14.18-sunxi Building initial module for 4.14.18-sunxi Error! Bad return status for module build on kernel: 4.14.18-sunxi (armv7l) Consult /var/lib/dkms/wireguard/0.0.20180718-1/build/make.log for more information. The content of the make.log file is: DKMS make.log for wireguard-0.0.20180718-1 for kernel 4.14.18-sunxi (armv7l) Sun Jul 29 02:31:42 UTC 2018 make: Entering directory '/usr/src/linux-headers-4.14.18-sunxi' Makefile:631: arch//Makefile: No such file or directory make: *** No rule to make target 'arch//Makefile'. Stop. make: Leaving directory '/usr/src/linux-headers-4.14.18-sunxi' However, I can compile and install that dkms module successfully by running `dkms build -m wireguard -v 0.0.20180718-1 -k 4.14.18-sunxi`. Further investigation into the dkms package, I found the following script: # dkms_common.postinst, line 227 if [ -n "$ARCH" ]; then if which lsb_release >/dev/null && [ $(lsb_release -s -i) = "Ubuntu" ]; then case $ARCH in amd64) ARCH="x86_64" ;; lpia|i?86) ARCH="i686" ;; esac fi echo "Building for architecture $ARCH" ARCH="-a $ARCH" fi which means if $ARCH is empty, it is going to be empty through the whole building process, passed into the Makefile, resulting in a build failure. This might be the problem I'm experiencing on an armv7l machine. I suggest that the $ARCH variable be unset if it exists and is empty in the postinst script, so dkms can figure out the arch itself. Also, why dpkg passed an empty string to the 4th argument of dkms_common.postinst (the $ARCH variable at dkms_common.postinst line 140) might need further investigation as it is likely to cause other issues if the installation is an upgrade rather than a new installation. I am using Debian GNU/Linux 9.5 (Armbian_5.38_Orangepipc_Debian_stretch_next_4.14.14), kernel 4.14.18-sunxi.
