From a2d648992a1d0510bf1dd160c320ec210fd285c2 Mon Sep 17 00:00:00 2001
From: Ludovic Courtès <ludo@gnu.org>
Date: Tue, 18 Apr 2017 23:39:03 +0200
Subject: gnu: libressl: Do not use 'getentropy'.

* gnu/packages/tls.scm (libressl)[arguments]: New field.
---
 gnu/packages/tls.scm | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/gnu/packages/tls.scm b/gnu/packages/tls.scm
index 1c99a3ad75..50e9de4806 100644
--- a/gnu/packages/tls.scm
+++ b/gnu/packages/tls.scm
@@ -442,6 +442,11 @@ required structures.")
        (base32
         "0c4awq45cl757fv7f7f75i5i0ibc6v7ns13n7xvfak7chv2lrqql"))))
     (build-system gnu-build-system)
+    (arguments
+     ;; Do as if 'getentropy' was missing since older Linux kernels lack it
+     ;; and libc would return ENOSYS, which is not properly handled.
+     ;; See <https://lists.gnu.org/archive/html/guix-devel/2017-04/msg00235.html>.
+     '(#:configure-flags '("ac_cv_func_getentropy=no")))
     (native-search-paths
       ;; FIXME: These two variables must designate a single file or directory
       ;; and are not actually "search paths."  In practice it works OK in
-- 
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