diff --git a/simgear/Makefile.am b/simgear/Makefile.am
new file mode 100644
index 00000000..b36ab91e
--- /dev/null
+++ b/simgear/Makefile.am
@@ -0,0 +1,27 @@
+if ENABLE_UNIX_SERIAL
+SERIAL_DIRS = serial
+else
+SERIAL_DIRS =
+endif
+
+if HAVE_ZLIB
+ZLIB_DIRS =
+else
+ZLIB_DIRS = zlib
+endif
+
+METAR_DIRS =
+# METAR_DIRS = metar
+
+SUBDIRS = \
+	include \
+	bucket \
+	debug \
+	math \
+	$(METAR_DIRS) \
+	misc \
+	screen \
+	$(SERIAL_DIRS) \
+	xgl \
+	$(ZLIB_DIRS)
+