Building with systemd support should not depend on systemd itself.
Why do we care if systemd is installed? We shouldn't.
Trying to build 0.2.6.8 with --enable-systemd blows up with:
checking for SYSTEMD... yes
checking for SYSTEMD209... no
configure: error: Package requirements (systemd >= 209) were not met:
No package 'systemd' found
cf. https://buildd.debian.org/status/fetch.php?pkg=tor&arch=s390x&ver=0.2.6.8-1&stamp=1432377274
--- a/configure.ac
+++ b/configure.ac
@@ -131,7 +131,7 @@ if test x$have_systemd = xyes; then
AC_DEFINE(HAVE_SYSTEMD,1,[Have systemd])
TOR_SYSTEMD_CFLAGS="${SYSTEMD_CFLAGS}"
TOR_SYSTEMD_LIBS="${SYSTEMD_LIBS}"
- PKG_CHECK_MODULES(SYSTEMD209, [systemd >= 209],
+ PKG_CHECK_MODULES(LIBSYSTEMD209, [libsystemd >= 209],
[AC_DEFINE(HAVE_SYSTEMD_209,1,[Have systemd v209 or more])], [])
fi
AC_SUBST(TOR_SYSTEMD_CFLAGS)