get stuck on 'udev'

[foggydude]

Hi,
i have really bighopes for my fingerprintsensor :)

I follow your instructions, but when i do 'meson (setup) build' i get

Run-time dependency udev found: NO (tried pkgconfig and cmake)

Udev is intalled and the latest version, purging it will lead to removing most of my system. This https://askubuntu.com/questions/1097066/how-to-fix-unmet-dependencies-for-udevamd64-error-on-ubuntu-18-04 does not work (there is no udev in /var/cache/apt/archives/

do you have an idea?
thanks a lot?

[MrQubo]

Which ubuntu version? You probably need libudev1 and/or libudev-dev package.

[foggydude]

Hi, thanks for quick reply

i have 24.10. I checked and have both packages, problem persists

here is the full output:

---

r@spectrrrrrrrrrre:~/synaTudor$ meson setup build
The Meson build system
Version: 1.5.1
Source dir: /home/r/synaTudor
Build dir: /home/r/synaTudor/build
Build type: native build
DEPRECATION: Option DBGWDF already exists.
Project name: synaTudor
Project version: 1.0.0
C compiler for the host machine: cc (gcc 14.2.0 "cc (Ubuntu 14.2.0-4ubuntu2) 14.2.0")
C linker for the host machine: cc ld.bfd 2.43.1
Host machine cpu family: x86_64
Host machine cpu: x86_64
Program bash found: YES (/usr/bin/bash)
Program ld found: YES (/usr/bin/ld)
Run-time dependency threads found: YES
Found pkg-config: YES (/usr/bin/pkg-config) 1.8.1
Run-time dependency libcrypto found: YES 3.3.1
Run-time dependency libusb-1.0 found: YES 1.0.27
Dependency threads found: YES unknown (cached)
Dependency libcrypto found: YES 3.3.1 (cached)
Dependency libusb-1.0 found: YES 1.0.27 (cached)
Dependency threads found: YES unknown (cached)
Dependency libcrypto found: YES 3.3.1 (cached)
Dependency libusb-1.0 found: YES 1.0.27 (cached)
Run-time dependency libcap found: YES 2.66
Run-time dependency libseccomp found: YES 2.5.5
Run-time dependency gio-2.0 found: YES 2.82.1
Run-time dependency gio-unix-2.0 found: YES 2.82.1
Run-time dependency dbus-1 found: YES 1.14.10
Configuring net.reactivated.TudorHostLauncher.service using configuration
Run-time dependency libfprint-2-tod-1 found: YES 1.94.8+tod1+tod1
Found CMake: /usr/bin/cmake (3.30.3)
Run-time dependency udev found: NO (tried pkgconfig)

libfprint-tod/meson.build:13:11: ERROR: Dependency "udev" not found, tried pkgconfig

A full log can be found at /home/r/synaTudor/build/meson-logs/meson-log.txt

[MrQubo]

You need systemd-dev package.
https://packages.ubuntu.com/search?suite=oracular&arch=any&mode=exactfilename&searchon=contents&keywords=udev.pc

[foggydude]

thanks, the installer works now

however, it still does not get recognised. am i missing something?

r@spectrrrrrrrrrre:$ fprintd-enroll
Impossible to enroll: GDBus.Error:net.reactivated.Fprint.Error.NoSuchDevice: No devices available
r@spectrrrrrrrrrre:$ sudo fprintd-enroll
[sudo] password for r:
Impossible to enroll: GDBus.Error:net.reactivated.Fprint.Error.NoSuchDevice: No devices available

i do have the fork of libfprint

r@spectrrrrrrrrrre:~$ sudo apt install libfprint-2-tod1
libfprint-2-tod1 is already the newest version (1:1.94.8+tod1-0ubuntu1).
libfprint-2-tod1 set to manually installed.
Summary:
Upgrading: 0, Installing: 0, Removing: 0, Not Upgrading: 1