diff --git a/ChangeLog b/ChangeLog
index 72143014ab7b41c196902bcf90fd81a86e8b9c63..27bf86ab5580fb96367d42b2f1cd1913ccddf7eb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2000-10-18  Niels Möller  <nisse@lysator.liu.se>
+
+	* configure.in: Check for endianness (needed by memcmp.c).
+
 2000-10-18  Niels Möller  <nisse@cuckoo.localdomain>
 
 	* src/abstract_crypto.h, src/dsa.c, src/dsa.h, src/rsa.c: Cleanup. 
diff --git a/configure.in b/configure.in
index 9c0e132865f154829a869f26f2b2fee3ea818dfa..e5f8bb7c8cfe2c1bb5b9ec5c864c3a6514347119 100644
--- a/configure.in
+++ b/configure.in
@@ -395,6 +395,9 @@ AC_TYPE_UID_T
 AC_TYPE_SIZE_T
 AC_HEADER_TIME
 
+dnl Needed by the supplied memcmp.c
+AC_C_BIGENDIAN
+
 AC_CHECK_SIZEOF(short, 2)
 AC_CHECK_SIZEOF(int, 4)
 AC_CHECK_SIZEOF(long, 4)