Not compiling copy because of a silly linker problem on the mac

priv/erl_comm.h

@@ -0,0 +1,8 @@
+#ifndef _ERL_COMM_H
+#define _ERL_COMM_H
+typedef unsigned char byte;
+
+int read_cmd(byte *buf);
+int write_cmd(byte *buf, int len);
+
+#endif