Checking for ARM64 on Windows

Author: jowr

.github/workflows/python_cibuildwheel.yml

@@ -58,7 +58,7 @@ jobs:
         CIBW_ENVIRONMENT_LINUX: COOLPROP_CMAKE=default,NATIVE
         CIBW_BUILD: cp${{ matrix.python-version }}-*
         CIBW_ARCHS_MACOS: x86_64 arm64 # universal2 is redundant
-        CIBW_ARCHS_WINDOWS: AMD64 x86 # ARM64 does not build properly due to msgpack-c (MSVC error C1189)
+        CIBW_ARCHS_WINDOWS: AMD64 x86 ARM64
         CIBW_ARCHS_LINUX: x86_64 aarch64 ppc64le s390x
         CIBW_MANYLINUX_X86_64_IMAGE: manylinux2014
         CIBW_MANYLINUX_I686_IMAGE: manylinux2014

CMakeLists.txt

@@ -257,6 +257,14 @@ list(APPEND APP_INCLUDE_DIRS "${CMAKE_CURRENT_SOURCE_DIR}/externals/fmtlib"
 list(APPEND APP_INCLUDE_DIRS "${CMAKE_CURRENT_SOURCE_DIR}/include")
 list(APPEND APP_INCLUDE_DIRS "${CMAKE_CURRENT_SOURCE_DIR}/src")
 
+# Set endianess for msgpack on ARM64 with MSVC
+if(MSVC)
+  if("${CMAKE_GENERATOR_PLATFORM}" STREQUAL "ARM64")
+    message(STATUS "Forcing msgpack-c to use little endian configuration")
+	add_compile_definitions(MSGPACK_ENDIAN_LITTLE_BYTE)
+  endif()
+endif()
+
 include_directories(${APP_INCLUDE_DIRS})
 
 set(SWIG_DEPENDENCIES