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-rw-r--r--m4/af_alg.m45
1 files changed, 3 insertions, 2 deletions
diff --git a/m4/af_alg.m4 b/m4/af_alg.m4
index cba09e89d6..601cf67474 100644
--- a/m4/af_alg.m4
+++ b/m4/af_alg.m4
@@ -1,4 +1,4 @@
-# af_alg.m4 serial 5
+# af_alg.m4 serial 6
dnl Copyright 2018-2021 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@@ -35,7 +35,8 @@ AC_DEFUN_ONCE([gl_AF_ALG],
use_af_alg=no
AC_ARG_WITH([linux-crypto],
[AS_HELP_STRING([[--with-linux-crypto]],
- [use Linux kernel cryptographic API (if available)])],
+ [use Linux kernel cryptographic API (if available) for the hash functions
+ MD5, SHA-1, SHA-224, SHA-256, SHA-384, SHA-512 on files])],
[use_af_alg=$withval],
[use_af_alg=no])
dnl We cannot use it if it is not available.