062b50abff
CMake IMPORTED targets should be namespaced so that CMake knows that the name refers to a target and not a file. Use the existing WrapXXX naming scheme where applicable. Fixes: QTBUG-83773 Change-Id: I5b0b722c811200c56c260c69e76940a625228769 Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
45 lines
1.4 KiB
CMake
45 lines
1.4 KiB
CMake
# We can't create the same interface imported target multiple times, CMake will complain if we do
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# that. This can happen if the find_package call is done in multiple different subdirectories.
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if(TARGET WrapAtomic::WrapAtomic)
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set(WrapAtomic_FOUND ON)
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return()
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endif()
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include(CheckCXXSourceCompiles)
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set (atomic_test_sources "#include <atomic>
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#include <cstdint>
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void test(volatile std::atomic<std::int64_t> &a)
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{
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std::int64_t v = a.load(std::memory_order_acquire);
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while (!a.compare_exchange_strong(v, v + 1,
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std::memory_order_acq_rel,
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std::memory_order_acquire)) {
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v = a.exchange(v - 1);
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}
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a.store(v + 1, std::memory_order_release);
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}
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int main(int, char **)
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{
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void *ptr = (void*)0xffffffc0; // any random pointer
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test(*reinterpret_cast<std::atomic<std::int64_t> *>(ptr));
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return 0;
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}")
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check_cxx_source_compiles("${atomic_test_sources}" HAVE_STDATOMIC)
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if(NOT HAVE_STDATOMIC)
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set(_req_libraries "${CMAKE_REQUIRE_LIBRARIES}")
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set(CMAKE_REQUIRE_LIBRARIES "atomic")
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check_cxx_source_compiles("${atomic_test_sources}" HAVE_STDATOMIC_WITH_LIB)
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set(CMAKE_REQUIRE_LIBRARIES "${_req_libraries}")
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endif()
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add_library(WrapAtomic::WrapAtomic INTERFACE IMPORTED)
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if(HAVE_STDATOMIC_WITH_LIB)
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target_link_libraries(WrapAtomic::WrapAtomic INTERFACE atomic)
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endif()
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set(WrapAtomic_FOUND 1)
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