diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..5125f60
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,8 @@
+EXTENSION = suncalc_postgres
+
+DATA = suncalc_postgres--0.0.1.sql
+#TESTS = $(wildcard test/sql/*.sql)
+
+PG_CONFIG = pg_config
+PGXS := $(shell $(PG_CONFIG) --pgxs)
+include $(PGXS)
diff --git a/suncalc/suncalc.sql b/suncalc_postgres--0.0.1.sql
similarity index 99%
rename from suncalc/suncalc.sql
rename to suncalc_postgres--0.0.1.sql
index 338d435..3f123d6 100644
--- a/suncalc/suncalc.sql
+++ b/suncalc_postgres--0.0.1.sql
@@ -1,3 +1,5 @@
+\echo Use "CREATE EXTENSION suncalc_postgres" to load this file. \quit
+
 CREATE OR REPLACE FUNCTION sc_fmod(
     dividend double precision,
     divisor double precision
@@ -336,4 +338,4 @@ BEGIN
             RETURN NEXT;
         END LOOP;
 END ;
-$$ LANGUAGE plpgsql IMMUTABLE;
\ No newline at end of file
+$$ LANGUAGE plpgsql IMMUTABLE;
diff --git a/suncalc_postgres.control b/suncalc_postgres.control
new file mode 100644
index 0000000..7de65f3
--- /dev/null
+++ b/suncalc_postgres.control
@@ -0,0 +1,5 @@
+comment = 'Solar event calculations for Postgres'
+default_version = '0.0.1'
+module_pathname = '$libdir/suncalc_postgres'
+relocatable = true
+requires = ''