From a87ea20b7c649d79b77d3bd2c303f059de5f1589 Mon Sep 17 00:00:00 2001
From: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com>
Date: Tue, 31 Aug 2021 16:49:14 +0900
Subject: [PATCH] configure: Avoid compile failure

---
 configure.ac | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/configure.ac b/configure.ac
index a5e106f4..b4b1e605 100644
--- a/configure.ac
+++ b/configure.ac
@@ -267,6 +267,7 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
 ]],
 [[
 std::vector<std::future<int>> v;
+(void)v;
 ]])],
     [AC_DEFINE([HAVE_STD_FUTURE], [1],
                [Define to 1 if you have the `std::future`.])
@@ -570,6 +571,7 @@ if test "x${request_libbpf}" != "xno"; then
     ]],
     [[
     enum bpf_stats_type foo;
+    (void)foo;
     ]])],
     [have_bpf_stats_type=yes],
     [have_bpf_stats_type=no])