+# Architecture specifics
+# - Log the target architecture
+# - ARM needs to link against atomic
+if(NOT MSVC)
+ # inspired by https://github.com/civetweb/civetweb/blob/master/cmake/DetermineTargetArchitecture.cmake
+ execute_process(
+ COMMAND ${CMAKE_C_COMPILER} -dumpmachine
+ RESULT_VARIABLE RESULT
+ OUTPUT_VARIABLE ARCH
+ ERROR_QUIET
+ )
+
+ if (RESULT)
+ message(STATUS "Failed to detect target architecture with compiler ${CMAKE_C_COMPILER}: ${RESULT}")
+ endif()
+
+ string(REGEX MATCH "([^-]+).*" ARCH_MATCH "${ARCH}")
+ if (NOT CMAKE_MATCH_1 OR NOT ARCH_MATCH)
+ message(STATUS "Failed to match the target architecture: ${ARCH}")
+ endif()
+
+ set(ARCH ${CMAKE_MATCH_1})
+
+ message(STATUS "Target architecture - ${ARCH}")
+
+ # ARM settings
+ if("${ARCH}" STREQUAL "arm")
+ check_cxx_source_compiles( "include <atomic>; int main(){ std::atomic<uint_fast64_t> x; x.fetch_add(1); x.sub_add(1); }" CXX_ATOMIC)
+
+ set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -latomic")
+ set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -latomic")
+ set(CMAKE_STATIC_LINKER_FLAGS "${CMAKE_STATIC_LINKER_FLAGS} -latomic")
+ endif()
+
+else()
+ if("${MSVC_C_ARCHITECTURE_ID}" STREQUAL "X86")
+ set(ARCH "i686")
+ elseif("${MSVC_C_ARCHITECTURE_ID}" STREQUAL "x64")
+ set(ARCH "x86_64")
+ elseif("${MSVC_C_ARCHITECTURE_ID}" STREQUAL "ARM")
+ set(ARCH "arm")
+ else()
+ message(FATAL_ERROR "Failed to determine the MSVC target architecture: ${MSVC_C_ARCHITECTURE_ID}")
+ endif()
+
+ message(STATUS "Target architecture - ${ARCH}")
+endif()
+