Created library "libltrace.a" and a simple program that calls it
diff --git a/proc.c b/proc.c
index 31ade78..c430e0c 100644
--- a/proc.c
+++ b/proc.c
@@ -8,7 +8,7 @@
 #include <errno.h>
 #include <stdlib.h>
 
-#include "ltrace.h"
+#include "main.h"
 #include "options.h"
 #include "elf.h"