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include(CheckCXXSourceCompiles)
include(CMakePushCheckState)
cmake_push_check_state()
if(CMAKE_CXX11_STANDARD_COMPILE_OPTION)
set(CMAKE_REQUIRED_FLAGS ${CMAKE_CXX11_STANDARD_COMPILE_OPTION})
endif()
check_cxx_source_compiles("
#include <atomic>
#include <stdint.h>
int main() {
std::atomic<int64_t> x;
x = 1;
x--;
return (int) x;
}"
atomic64)
if(NOT atomic64)
find_library(ATOMIC NAMES atomic libatomic.so.1)
if(ATOMIC)
set(LIBATOMIC ${ATOMIC})
message(STATUS "Found libatomic: ${LIBATOMIC}")
else()
check_cxx_source_compiles("
#include <atomic>
#include <stdint.h>
int main() {
std::atomic<int32_t> x;
x = 1;
x--;
return (int) x;
}"
atomic32)
if(atomic32)
message(FATAL_ERROR "Failed to find libatomic!")
endif()
endif()
endif()
cmake_pop_check_state()
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