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From f639ec9b25b2758a07d214f7755f1ae0f764e949 Mon Sep 17 00:00:00 2001
Message-Id: <f639ec9b25b2758a07d214f7755f1ae0f764e949.1597434688.git.mschiffer@universe-factory.net>
From: Ilya Maximets <i.maximets@ovn.org>
Date: Wed, 12 Aug 2020 10:57:07 +0200
Subject: [PATCH] acinclude: Fix build with kernels with prandom* moved to
prandom.h.
Recent commit c0842fbc1b18 ("random32: move the pseudo-random 32-bit
definitions to prandom.h") in upstream kernel moved the definition
of prandom_* functions from random.h to prandom.h. This change was
also backported to stable kernels.
Fixing our configure script to look for these functions in a new
location and avoid build failures:
datapath/linux/compat/include/linux/random.h:11:19:
error: redefinition of 'prandom_u32_max'
Acked-by: Greg Rose <gvrose8192@gmail.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
(cherry picked from commit 0047ca3a0290f1ef954f2c76b31477cf4b9755f5)
---
acinclude.m4 | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/acinclude.m4 b/acinclude.m4
index b474422f52c8..7f028836f54c 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -781,6 +781,10 @@ AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
[prandom_u32[[\(]]],
[OVS_DEFINE([HAVE_PRANDOM_U32])])
OVS_GREP_IFELSE([$KSRC/include/linux/random.h], [prandom_u32_max])
+ OVS_GREP_IFELSE([$KSRC/include/linux/prandom.h],
+ [prandom_u32[[\(]]],
+ [OVS_DEFINE([HAVE_PRANDOM_U32])])
+ OVS_GREP_IFELSE([$KSRC/include/linux/prandom.h], [prandom_u32_max])
OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [get_link_net])
OVS_GREP_IFELSE([$KSRC/include/net/rtnetlink.h], [name_assign_type])
--
2.28.0