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From a7da5a3981d8fd2fadc5146da4ab5ad33de5482e Mon Sep 17 00:00:00 2001
From: Rosen Penev <rosenp@gmail.com>
Date: Tue, 6 May 2025 13:53:04 -0700
Subject: [PATCH] add support for external libatomic
Needed on some 32-bit platforms where 64-bit atomics are provided by
libatomic.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
----
--- a/scripts/check_atomic.m4
+++ b/scripts/check_atomic.m4
@@ -30,15 +30,7 @@ AC_DEFUN([CHECK_ATOMIC], [
AC_LINK_IFELSE([AC_LANG_SOURCE([_CHECK_ATOMIC_testbody])],[
AC_MSG_RESULT([yes])
],[
- AC_MSG_RESULT([no])
ATOMIC_LIBS=-latomic
- AC_MSG_CHECKING([whether std::atomic needs -latomic])
- AC_LINK_IFELSE([AC_LANG_SOURCE([_CHECK_ATOMIC_testbody])],[
- AC_MSG_RESULT([yes])
- ],[
- AC_MSG_RESULT([no])
- AC_MSG_FAILURE([cannot figure out how to use std::atomic])
- ])
])
AC_LANG_POP
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