diff --git a/third_party/chrony/config.h.in b/third_party/chrony/config.h.in
new file mode 100644
index 0000000..5be1b28
--- /dev/null
+++ b/third_party/chrony/config.h.in
@@ -0,0 +1,19 @@
+#define LINUX
+#define DEBUG 0
+#define USE_PTHREAD_ASYNCDNS
+
+#define CHRONY_VERSION "%CHRONY_VERSION%"
+#define CHRONYD_FEATURES "NTP RTC SCFILTER ASYNCDNS"
+#define FEAT_NTP
+#define FEAT_RTC
+#define FEAT_SCFILTER
+#define FEAT_ASYNCDNS
+
+#define DEFAULT_COMMAND_SOCKET "/todo/chronyd.sock"
+#define DEFAULT_CONF_FILE "/todo/chrony.conf"
+#define DEFAULT_HWCLOCK_FILE ""
+#define DEFAULT_PID_FILE "/todo/chronyd.pid"
+#define DEFAULT_RTC_DEVICE "/dev/rtc"
+#define DEFAULT_USER "root"
+
+#define MAIL_PROGRAM "/todo/sendmail"