From 3f347c46272886a099852a4cd303ecf37a054de8 Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Mon, 18 May 2020 10:23:50 -0700
Subject: Fix build on riscv32 (#675)

---
 absl/synchronization/internal/waiter.cc | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'absl/synchronization/internal/waiter.cc')

diff --git a/absl/synchronization/internal/waiter.cc b/absl/synchronization/internal/waiter.cc
index 2949f5a8..b6150b9b 100644
--- a/absl/synchronization/internal/waiter.cc
+++ b/absl/synchronization/internal/waiter.cc
@@ -86,6 +86,14 @@ static void MaybeBecomeIdle() {
 #endif
 #endif
 
+#if defined(__NR_futex_time64) && !defined(SYS_futex_time64)
+#define SYS_futex_time64 __NR_futex_time64
+#endif
+
+#if defined(SYS_futex_time64) && !defined(SYS_futex)
+#define SYS_futex SYS_futex_time64
+#endif
+
 class Futex {
  public:
   static int WaitUntil(std::atomic<int32_t> *v, int32_t val,
-- 
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