From: Michael R. Crusoe <michael.crusoe@gmail.com>
Subject: don't clean a file that is part of the distribution tarball

--- vg.orig/Makefile
+++ vg/Makefile
@@ -616,7 +616,7 @@
 	$(RM) -r $(UNITTEST_OBJ_DIR)/*.o $(UNITTEST_OBJ_DIR)/*.d
 	$(RM) -r $(SUBCOMMAND_OBJ_DIR)/*.o $(SUBCOMMAND_OBJ_DIR)/*.d
 	$(RM) -r $(OBJ_DIR)/*.o $(OBJ_DIR)/*.d
-	$(RM) -f $(INC_DIR)/vg_git_version.hpp $(INC_DIR)/vg_system_version.hpp
+	$(RM) -f $(INC_DIR)/vg_system_version.hpp
 
 clean: clean-vcflib
 	$(RM) -r $(BIN_DIR)
@@ -626,7 +626,6 @@
 	$(RM) -r $(IO_OBJ_DIR)
 	$(RM) -r $(ALGORITHMS_OBJ_DIR)
 	$(RM) -r $(OBJ_DIR)
-	$(RM) -r $(INC_DIR)
 	$(RM) -r share/
 	cd $(DEP_DIR) && cd sonLib && $(MAKE) clean
 	cd $(DEP_DIR) && cd htslib && $(MAKE) clean
