1 files changed, 5 insertions, 3 deletions

diff --git a/gl/m4/sha1.m4 b/gl/m4/sha1.m4
index 21c775e..fdba7a6 100644
--- a/gl/m4/sha1.m4
+++ b/gl/m4/sha1.m4
@@ -1,5 +1,5 @@
-# sha1.m4 serial 11
-dnl Copyright (C) 2002-2006, 2008-2013 Free Software Foundation, Inc.
+# sha1.m4 serial 12
+dnl Copyright (C) 2002-2006, 2008-2021 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -8,5 +8,7 @@ AC_DEFUN([gl_SHA1],
 [
   dnl Prerequisites of lib/sha1.c.
   AC_REQUIRE([gl_BIGENDIAN])
-  :
+
+  dnl Determine HAVE_OPENSSL_SHA1 and LIB_CRYPTO
+  gl_CRYPTO_CHECK([SHA1])
 ])