Merge pull request #1032 from bubba/recursive-submodules-makefile

Recursively sync and update submodules in Makefile

Author: Anrock

Makefile

@@ -37,8 +37,8 @@ hie-%: submodules cabal
 
 ## Updates local git submodules
 submodules:
-	git submodule sync
-	git submodule update --init
+	git submodule sync --recursive
+	git submodule update --init --recursive
 .PHONY: submodules
 
 # ------------------------------------------------------