And BTW, the actual systemd code (> 209) has no more package for libsystemd-daemon and this does not work on debian unstable for example. It should be replaced by libsystemd as a package search name.
dpkg -s libsystemd-dev <================
Package: libsystemd-dev
Status: install ok installed
Priority: optional
Section: libdevel
Installed-Size: 612
Maintainer: Debian systemd Maintainers <pkg-systemd-maintainers@lists.alioth.debian.org>
Architecture: amd64
Multi-Arch: same
Source: systemd
Version: 229-5
Replaces: libsystemd-daemon-dev (<< 209), libsystemd-id128-dev (<< 209), libsystemd-journal-dev (<< 209), libsystemd-login-dev (<< 209), systemd (<< 204-8)
Depends: libsystemd0 (= 229-5)
Breaks: libsystemd-daemon-dev (<< 209), libsystemd-id128-dev (<< 209), libsystemd-journal-dev (<< 209), libsystemd-login-dev (<< 209), systemd (<< 204-8)
Description: systemd utility library - development files
The libsystemd0 library provides interfaces to various systemd components.
.
This package contains the development files.
Homepage:
http://www.freedesktop.org/wiki/Software/systemd
