1 files changed, 4 insertions, 1 deletions

diff --git a/gl/sha1.h b/gl/sha1.h
index e12a23c..bc3470a 100644
--- a/gl/sha1.h
+++ b/gl/sha1.h
@@ -1,6 +1,6 @@
 /* Declarations of functions and data types used for SHA1 sum
    library functions.
-   Copyright (C) 2000-2001, 2003, 2005-2006, 2008-2021 Free Software
+   Copyright (C) 2000-2001, 2003, 2005-2006, 2008-2022 Free Software
    Foundation, Inc.
 
    This file is free software: you can redistribute it and/or modify
@@ -23,6 +23,9 @@
 # include <stdint.h>
 
 # if HAVE_OPENSSL_SHA1
+#  ifndef OPENSSL_API_COMPAT
+#   define OPENSSL_API_COMPAT 0x10101000L /* FIXME: Use OpenSSL 1.1+ API.  */
+#  endif
 #  include <openssl/sha.h>
 # endif