daemon: first code.

Logging code based heavily on pettycoin's.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

daemon/lightningd.c

@@ -0,0 +1,25 @@
+#include "lightningd.h"
+#include "log.h"
+#include <ccan/tal/tal.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+static struct lightningd_state *lightningd_state(void)
+{
+	struct lightningd_state *state = tal(NULL, struct lightningd_state);
+
+	state->log_record = new_log_record(state, 20 * 1024 * 1024, LOG_INFORM);
+	state->base_log = new_log(state, state->log_record,
+				  "lightningd(%u):", (int)getpid());
+
+	return state;
+}
+
+int main(int argc, char *argv[])
+{
+	struct lightningd_state *state = lightningd_state();
+
+	log_info(state->base_log, "Hello world!");
+	tal_free(state);
+	return 0;
+}