Hello!
I have a question about the compilation and installation of the PCSCD.
My Host system (Mageia) ships with the 1.9.9-1.1 version and the latest version is 2.4.1. I downloaded the latest version and try to install it.
So I followed the instructions and everything was fine, except that the installation path was
/usr/sbin/pcscd
which differs from the path my system stored the old version.
Is this a problem? The following status information may indicate that exactly the new version is used for pcscd isn’t it?
[root@localhost ~]# systemctl status pcscd
●pcscd.service - PC/SC Smart Card Daemon
Loaded: loaded (/usr/lib/systemd/system/pcscd.service; indirect; preset:disabled)
Active:active (running)since Fri 2026-05-15 02:30:44 EDT; 57min ago
TriggeredBy: ●pcscd.socket
Docs: man:pcscd(8)
Main PID: 862895 (pcscd)
Tasks: 7 (limit: 38334)
Memory: 1.4M
CPU: 18ms
CGroup: /system.slice/pcscd.service
└─862895 /usr/sbin/pcscd --foreground --auto-exit
Mai 15 02:30:44 localhost systemd[1]: Started pcscd.service.
Mai 15 02:30:44 localhost pcscd[862895]: 00000000 winscard_svc.c:382:ContextThread() Communication protocol mismatch!
Mai 15 02:30:44 localhost pcscd[862895]: 00000075 winscard_svc.c:384:ContextThread() Client protocol is 4:5
Mai 15 02:30:44 localhost pcscd[862895]: 00000003 winscard_svc.c:386:ContextThread() Server protocol is 4:4
Is there a way to figure out which version pcscd use?
What may the line
Mai 15 02:30:44 localhost pcscd[862895]: 00000000 winscard_svc.c:382:ContextThread() Communication protocol mismatch!
tell us?
I then I stumbled about this code (a file called c.sh)
#!/bin/sh
set -x
set -e
BUILD_DIR=builddir
TMP_DIR=/tmp/pcsc
rm -rf "$BUILD_DIR"
meson setup "$BUILD_DIR" \
--prefix /usr \
-Dsystemdunit=system \
"$@"
cd "$BUILD_DIR"
meson compile
rm -rf "$TMP_DIR"
DESTDIR="$TMP_DIR" meson install
find "$TMP_DIR"
which is part of the pcscd archive.
I just run this code and again everything works.
Can someone please explain what
meson setup "$BUILD_DIR" \
--prefix /usr \
-Dsystemdunit=system \
"$@"
Does?
Many regards!
T.L.