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build: Fix check whether -latomic needed

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Hennadii Stepanov committed 2024-01-04 11:47:47 +00:00
1 parent 65c05db660
commit f8ca1357c8
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build-aux/m4/l_atomic.m4
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@@ -4,7 +4,7 @@ dnl permitted in any medium without royalty provided the copyright notice
dnl and this notice are preserved. This file is offered as-is, without any dnl and this notice are preserved. This file is offered as-is, without any
dnl warranty. dnl warranty.
# Clang prior to version 15, when building for 32-bit, # Clang, when building for 32-bit,
# and linking against libstdc++, requires linking with # and linking against libstdc++, requires linking with
# -latomic if using the C++ atomic library. # -latomic if using the C++ atomic library.
# Can be tested with: clang++ test.cpp -m32 # Can be tested with: clang++ test.cpp -m32
@@ -24,6 +24,8 @@ m4_define([_CHECK_ATOMIC_testbody], [[
std::atomic<std::chrono::seconds> t{0s}; std::atomic<std::chrono::seconds> t{0s};
t.store(2s); t.store(2s);
auto t1 = t.load();
t.compare_exchange_strong(t1, 3s);
std::atomic<int64_t> a{}; std::atomic<int64_t> a{};