From 3dcc37f539eff1111604bb6e3e8b309f2e9a1921 Mon Sep 17 00:00:00 2001
From: Matthias Andree <matthias.andree@gmx.de>
Date: Fri, 3 Dec 2021 01:07:34 +0100
Subject: Require C99 compiler for wolfSSL

---
 INSTALL | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'INSTALL')

diff --git a/INSTALL b/INSTALL
index 298d1694..937e9560 100644
--- a/INSTALL
+++ b/INSTALL
@@ -29,7 +29,8 @@ This affects, f.i., LibreSSL.
 
 Since 6.4.25, there is experimental support for wolfSSL 5.0.0 or newer,
 which is under GNU GPL v2 or later license and hence may be easier for
-a consistent GPLv2+ licensing of fetchmail.
+a consistent GPLv2+ licensing of fetchmail.  This support requires a C99
+or newer compiler.
 
 Choose between OpenSSL or wolfSSL.
 
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