Conditionalize the cassandane stuff.

To facilitate building for EL7 and maybe F25 and older, conditionalize
the build dependencies and calls to Cassandane.

cyrus-imapd.spec

@@ -2,6 +2,9 @@
 %global cmt1 b97ba9cbe78e48d10ee0cbdb1f43a73b907e3460
 %define scmt(l:) %(c=%1; echo ${c:0:%{-l:%{-l*}}%{!-l:7}})
 
+# Cassandane run by default.  '--without cassandane' disables.
+%bcond_without cassandane
+
 Name: cyrus-imapd
 Version: 3.0.1
 Release: 1%{?dist}
@@ -84,6 +87,7 @@ BuildRequires: cyrus-sasl-plain cyrus-sasl-md5
 BuildRequires: net-tools words
 #BuildRequires: imaptest
 
+%if %{with cassandane}
 # Perl modules required for cassandane to function
 BuildRequires: perl(AnyEvent) perl(BSD::Resource) perl(Clone)
 BuildRequires: perl(File::chdir) perl(IO::Socket::INET6) perl(Mail::IMAPTalk)
@@ -92,6 +96,7 @@ BuildRequires: perl(Net::CalDAVTalk) perl(Net::CardDAVTalk)
 BuildRequires: perl(Net::Server) perl(News::NNTPClient) perl(String::CRC32)
 BuildRequires: perl(Sys::Syslog) perl(Test::Unit::TestRunner) perl(Time::HiRes)
 BuildRequires: perl(Unix::Syslog) perl(XML::DOM) perl(XML::Generator)
+%endif
 
 Requires(pre): shadow-utils
 Requires(post): /sbin/ldconfig
@@ -207,9 +212,11 @@ popd
 # This is the test suite, which doesn't build much but does verify its dependencies.
 # If this is done after the configure call, the one thing it does build fails
 # because the configure macro puts some hardening flags into the environment.
+%if %{with cassandane}
 pushd cassandane
 make
 popd
+%endif
 
 # Options not enabled:
 # --enable-objectstore
@@ -398,6 +405,7 @@ find %buildroot -name ".packlist" -exec rm {} \;
 %check
 make %{?_smp_mflags} check || exit 1
 
+%if %{with cassandane}
 pushd cassandane
 
 # Build the syslog interposer
@@ -448,6 +456,7 @@ export LD_LIBRARY_PATH=%buildroot/%_libdir
 # current UID to Cassandane::AnnotatorDaemon->run.
 # (getpwuid($<))[0]
 # Also override group
+%endif
 
 
 %pre