[libcxx-commits] [PATCH] D85095: Fix libcxx build on riscv32

[Khem Raj via Phabricator via libcxx-commits]

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RISCV glibc has decided to use 64bit time_t from get go unlike
other 32bit architecture, therefore, aliasing __NR_futex to
__NR_futex_time64 helps avoid the below errors on rv32


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D85095

Files:
  libcxx/src/atomic.cpp


Index: libcxx/src/atomic.cpp
===================================================================
--- libcxx/src/atomic.cpp
+++ libcxx/src/atomic.cpp
@@ -16,6 +16,9 @@
 #include <iostream>
 
 #ifdef __linux__
+#if !defined(__NR_futex) && defined(__riscv) && __riscv_xlen == 32
+# define __NR_futex __NR_futex_time64
+#endif
 
 #include <unistd.h>
 #include <linux/futex.h>


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