3 files changed, 10 insertions, 4 deletions

diff --git a/Makefile b/Makefile
index f00bcd4..d87dd9b 100644
--- a/Makefile
+++ b/Makefile
@@ -1,13 +1,15 @@
-CFLAGS=-Wall -g
+CFLAGS=-Wall -g -Iinclude/
 CPPFLAGS=-Wall -g
 
+vpath %.h include/
+vpath %.c src/
+
 .PHONY: clean
 
 all: ftcat
 
-
 ftcat: ftcat.o
-        cc -o ftcat ftcat.o
+        ${CC} -o ftcat ftcat.o
 
 clean: 
         rm -rf *.o ftcat
diff --git a/timestamp.h b/include/timestamp.h
index ae50ae1..ae50ae1 100644
--- a/timestamp.h
+++ b/include/timestamp.h
diff --git a/ftcat.c b/src/ftcat.c
index f706ef5..bb7b3e6 100644
--- a/ftcat.c
+++ b/src/ftcat.c
@@ -41,7 +41,11 @@ static void cat2stdout(int fd)
 
 static void usage(void)
 {
-        fprintf(stderr, "Usage: ftcat <ft device> TS1 TS2 ....\n\n");
+        fprintf(stderr, 
+                "Usage: ftcat <ft device> TS1 TS2 ....\n\n"
+                "where TS1, TS2, ... is one of "
+                " sched, tick, plug_tick, plug_sched"
+                "\n");
         exit(1);
 }