add build rule to makefile

diff --git a/Makefile b/Makefile
index b119c245d554276ced2300e3083c51ace4c20625..c4a48a497039f74ce8a9f27fe84dafd6456049ca 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -3,6 +3,9 @@
 R ?= R
 ROPTS=-q --no-save --no-restore-data
 
+build:
+       $(R) CMD build .
+
 update_docs:
        $(R) $(ROPTS) -e "devtools::document()"