1 files changed, 6 insertions, 3 deletions

diff --git a/Makefile b/Makefile
index 6bcd90a..e796ed8 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,7 @@
-.PHONY: all
+dirs = src doc
 
-all:
-	$(MAKE) -C src/
+.PHONY: all $(dirs)
+
+all: $(dirs)
+$(dirs):
+	$(MAKE) -C $@