diff --git a/Makefile.am b/Makefile.am
index 8289c65..830311e 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -51,7 +51,9 @@ libtmplrzip_la_SOURCES = \
   aes.c \
   aes.h \
   sha4.c \
-  sha4.h
+  sha4.h \
+  libzpaq/libzpaq.cpp \
+  libzpaq/libzpaq.h
 libtmplrzip_la_LIBADD = lzma/C/liblzma.la
 
 
diff --git a/libzpaq/libzpaq.cpp b/libzpaq/libzpaq.cpp
index f0c35d5..85d1605 100644
--- a/libzpaq/libzpaq.cpp
+++ b/libzpaq/libzpaq.cpp
@@ -15,6 +15,7 @@ conforming to the ZPAQ level 2 standard. See http://mattmahoney.net/zpaq/
 */
 
 #include "libzpaq.h"
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <math.h>
@@ -57,6 +58,10 @@ void Writer::write(const char* buf, int n) {
     put(U8(buf[i]));
 }
 
+void error(const char* msg) {
+  fprintf(stderr, "zpipe error: %s\n", msg);
+  exit(1);
+}
 ///////////////////////// allocx //////////////////////
 
 // Allocate newsize > 0 bytes of executable memory and update