From 527ca132e03e7ca319817d70578491b818e3f8b4 2015-01-30 21:57:36
From: Min RK <benjaminrk@gmail.com>
Date: 2015-01-30 21:57:36
Subject: [PATCH] fix xargs call on BSD

`-r` is GNU-only

---

diff --git a/docs/Makefile b/docs/Makefile
index 84716be..cae3a1d 100644
--- a/docs/Makefile
+++ b/docs/Makefile
@@ -40,7 +40,7 @@ clean_api:
 
 clean: clean_api
 	-rm -rf build/* dist/*
-	-cd $(SRCDIR)/config/options; cat generated | xargs -r rm -f
+	-cd $(SRCDIR)/config/options; test -f generated && cat generated | xargs rm -f
 	-rm -rf $(SRCDIR)/config/options/generated
 	-rm -f $(SRCDIR)/interactive/magics-generated.txt