From 316ce7f8bee2529fb3bb023104e44bb56dc3ee94 Mon Sep 17 00:00:00 2001
From: Dan Buch <daniel.buch@gmail.com>
Date: Tue, 1 Nov 2011 22:05:27 -0400
Subject: [PATCH] cleaning up makefile stuff for ex22

---
 Makefile |  9 +++------
 ex22.mk  | 10 ++++++++++
 2 files changed, 13 insertions(+), 6 deletions(-)
 create mode 100644 ex22.mk

diff --git a/Makefile b/Makefile
index e690e0e..1ddb5c8 100644
--- a/Makefile
+++ b/Makefile
@@ -3,13 +3,9 @@ CFLAGS=-Wall -g -DNDEBUG
 EXERCISES = $(patsubst %.c,%,$(shell ls ex*.c | egrep -v "ex(19|22)"))
 
 
-all: $(EXERCISES) ex22_main
+all: $(EXERCISES)
 	$(MAKE) -f ex19.mk
-
-
-ex22_main: ex22.c ex22_main.c ex22.h
-	$(CC) $(CFLAGS) -c -o ex22.o ex22.c
-	$(CC) $(CFLAGS) ex22_main.c ex22.o -o $@
+	$(MAKE) -f ex22.mk
 
 
 test: all
@@ -19,6 +15,7 @@ test: all
 clean:
 	rm -f $(EXERCISES)
 	$(MAKE) -f ex19.mk clean
+	$(MAKE) -f ex22.mk clean
 
 
 .PHONY: all test clean
diff --git a/ex22.mk b/ex22.mk
new file mode 100644
index 0000000..4f22c3b
--- /dev/null
+++ b/ex22.mk
@@ -0,0 +1,10 @@
+all: ex22_main
+
+
+ex22_main: ex22_main.o ex22.o
+
+
+clean:
+	rm -f ex22_main ex22.o ex22_main.o
+
+.PHONY: all clean