CMake complains about "No package 'systemd' found" though I have installed systemd on docker container of Ubuntu 20.04. Why cmake is not able to detect the installed pkg
root@e8208b70072e:/opt/dev/sysrepo/build# cmake ..
-- ietf-yang-library revision: 2019-01-04
-- Sysrepo repository: /etc/sysrepo
-- Startup data path: /etc/sysrepo/data
-- Notification path: /etc/sysrepo/data/notif
-- YANG module path: /etc/sysrepo/yang
-- SR plugins path: /usr/local/lib/sysrepo/plugins
-- SRPD plugins path: /usr/local/lib/sysrepo-plugind/plugins
Package systemd was not found in the pkg-config search path.
Perhaps you should add the directory containing `systemd.pc'
to the PKG_CONFIG_PATH environment variable
No package 'systemd' found
-- Could NOT find LibSystemd (missing: SYSTEMD_UNIT_DIR)
CMake Warning at CMakeLists.txt:349 (message):
Disabling sysrepo-plugind systemd support because libsystemd was not found.
-- Configuring done
-- Generating done
-- Build files have been written to: /opt/dev/sysrepo/build
Installed files can be seen below
root@e8208b70072e:/opt/dev# find / -name *libsystemd*
/var/lib/dpkg/info/libsystemd0:amd64.md5sums
/var/lib/dpkg/info/libsystemd0:amd64.shlibs
/var/lib/dpkg/info/libsystemd0:amd64.symbols
/var/lib/dpkg/info/libsystemd0:amd64.list
/var/lib/dpkg/info/libsystemd0:amd64.triggers
/var/lib/dpkg/info/libsystemd-dev:amd64.md5sums
/var/lib/dpkg/info/libsystemd-dev:amd64.list
/usr/share/doc/libsystemd0
/usr/share/doc/libsystemd-dev
/usr/lib/x86_64-linux-gnu/libsystemd.so.0
/usr/lib/x86_64-linux-gnu/libsystemd.so.0.28.0
/usr/lib/x86_64-linux-gnu/libsystemd.so
/usr/lib/x86_64-linux-gnu/pkgconfig/libsystemd.pc