Add --with-initscript to allow us to omit the initscript.

Makefile.am

@@ -38,6 +38,9 @@ if USE_DNS_SD
 shairport_sync_SOURCES += mdns_dns_sd.c
 endif
 
+if INSTALL_INITSCRIPT
 install-exec-hook:
 	[ -f /etc/init.d/shairport-sync ] || cp scripts/shairport-sync /etc/init.d/
 	update-rc.d shairport-sync defaults 90 10
+endif
+

configure.ac

@@ -39,6 +39,12 @@ PKG_CHECK_MODULES(
     [LIBCONFIG], [libconfig],
     [LIBS="${LIBCONFIG_LIBS} ${LIBS}"
      AC_DEFINE([HAVE_LIBCONFIG],[1],[Define to 1 if you have libconfig])])
+     
+# Check to see if we should include the initscript
+
+AC_ARG_WITH([initscript],
+[  --with-initscript = include a startup script], ,[with_initscript=1])
+AM_CONDITIONAL([INSTALL_INITSCRIPT], [test "x$with_initscript" = "x1"])
 
 # Look for piddir flag
 AC_ARG_WITH(piddir, [ --with-piddir=<pathname> Specify a pathname to a directory in which to write the PID file.], [