diff --git a/Makefile b/Makefile
new file mode 100644
index 000000000..54ea31ca7
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,10 @@
+SUBFOLDERS := exosphere fusee/fusee-primary fusee/fusee-secondary stratosphere/libstratosphere thermosphere
+
+TOPTARGETS := all clean
+
+$(TOPTARGETS): $(SUBFOLDERS)
+
+$(SUBFOLDERS):
+	$(MAKE) -C $@ $(MAKECMDGOALS)
+
+.PHONY: $(TOPTARGETS) $(SUBFOLDERS)
diff --git a/thermosphere/.gitignore b/thermosphere/.gitignore
new file mode 100644
index 000000000..1fcb1529f
--- /dev/null
+++ b/thermosphere/.gitignore
@@ -0,0 +1 @@
+out