Correct the Windows cross-compiling commands

Author: ykhrustalev

backends/xnnpack/CMakeLists.txt

@@ -59,7 +59,7 @@ foreach(fbs_file ${_xnnpack_schema__srcs})
   )
 endforeach()
 
-if(WIN32)
+if(WIN32 AND NOT CMAKE_CROSSCOMPILING)
   set(MV_COMMAND
       powershell -Command
       "Move-Item -Path ${_xnnpack_flatbuffer__outputs} -Destination ${_xnnpack_schema__outputs}"

third-party/CMakeLists.txt

@@ -49,7 +49,7 @@ ExternalProject_Add(
 ExternalProject_Get_Property(flatbuffers_external_project INSTALL_DIR)
 add_executable(flatc IMPORTED GLOBAL)
 add_dependencies(flatc flatbuffers_external_project)
-if(WIN32)
+if(WIN32 AND NOT CMAKE_CROSSCOMPILING)
   # flatbuffers does not use CMAKE_BUILD_TYPE. Internally, the build forces Release
   # config, but from CMake's perspective the build type is always Debug.
   set_target_properties(flatc PROPERTIES IMPORTED_LOCATION ${INSTALL_DIR}/bin/flatc.exe)
@@ -101,7 +101,7 @@ file(REMOVE_RECURSE ${PROJECT_SOURCE_DIR}/third-party/flatcc/lib)
 ExternalProject_Get_Property(flatcc_external_project INSTALL_DIR)
 add_executable(flatcc_cli IMPORTED GLOBAL)
 add_dependencies(flatcc_cli flatcc_external_project)
-if(WIN32)
+if(WIN32 AND NOT CMAKE_CROSSCOMPILING)
   set_target_properties(flatcc_cli PROPERTIES IMPORTED_LOCATION ${INSTALL_DIR}/bin/flatcc.exe)
 else()
   set_target_properties(flatcc_cli PROPERTIES IMPORTED_LOCATION ${INSTALL_DIR}/bin/flatcc)