dac32e95d6
Change-Id: I0321883f762460b146666bfbad0d8b27c3fdeadd Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
38 lines
1.1 KiB
CMake
38 lines
1.1 KiB
CMake
include(CheckCXXSourceCompiles)
|
|
|
|
set (atomic_test_sources "#include <atomic>
|
|
#include <cstdint>
|
|
|
|
void test(volatile std::atomic<std::int64_t> &a)
|
|
{
|
|
std::int64_t v = a.load(std::memory_order_acquire);
|
|
while (!a.compare_exchange_strong(v, v + 1,
|
|
std::memory_order_acq_rel,
|
|
std::memory_order_acquire)) {
|
|
v = a.exchange(v - 1);
|
|
}
|
|
a.store(v + 1, std::memory_order_release);
|
|
}
|
|
|
|
int main(int, char **)
|
|
{
|
|
void *ptr = (void*)0xffffffc0; // any random pointer
|
|
test(*reinterpret_cast<std::atomic<std::int64_t> *>(ptr));
|
|
return 0;
|
|
}")
|
|
|
|
check_cxx_source_compiles("${atomic_test_sources}" HAVE_STDATOMIC)
|
|
if(NOT HAVE_STDATOMIC)
|
|
set(_req_libraries "${CMAKE_REQUIRE_LIBRARIES}")
|
|
set(CMAKE_REQUIRE_LIBRARIES "atomic")
|
|
check_cxx_source_compiles("${atomic_test_sources}" HAVE_STDATOMIC_WITH_LIB)
|
|
set(CMAKE_REQUIRE_LIBRARIES "${_req_libraries}")
|
|
endif()
|
|
|
|
add_library(Atomic INTERFACE IMPORTED)
|
|
if(HAVE_STDATOMIC_WITH_LIB)
|
|
target_link_libraries(Atomic INTERFACE atomic)
|
|
endif()
|
|
|
|
set(Atomic_FOUND 1)
|