diff --git a/.github/workflows/dawn-ci.cmake b/.github/workflows/dawn-ci.cmake
index d4b591a..9d0f0a6 100644
--- a/.github/workflows/dawn-ci.cmake
+++ b/.github/workflows/dawn-ci.cmake
@@ -8,16 +8,21 @@ set(TINT_BUILD_TESTS OFF CACHE BOOL "" FORCE)
 set(TINT_BUILD_CMD_TOOLS OFF CACHE BOOL "" FORCE)
 set(TINT_BUILD_IR_BINARY OFF CACHE BOOL "" FORCE)
 
-if (CMAKE_SYSTEM_NAME STREQUAL "Windows")
+set(_system_name "${CMAKE_HOST_SYSTEM_NAME}")
+if (DEFINED CMAKE_SYSTEM_NAME AND NOT CMAKE_SYSTEM_NAME STREQUAL "")
+  set(_system_name "${CMAKE_SYSTEM_NAME}")
+endif ()
+
+if (_system_name STREQUAL "Windows")
   set(CMAKE_MSVC_DEBUG_INFORMATION_FORMAT "Embedded" CACHE STRING "" FORCE)
   set(CMAKE_POLICY_CMP0141 NEW CACHE STRING "" FORCE)
   set(DAWN_BUILD_MONOLITHIC_LIBRARY SHARED CACHE STRING "" FORCE)
-elseif (CMAKE_SYSTEM_NAME STREQUAL "Linux")
+elseif (_system_name STREQUAL "Linux")
   set(CMAKE_C_COMPILER clang CACHE FILEPATH "" FORCE)
   set(CMAKE_CXX_COMPILER clang++ CACHE FILEPATH "" FORCE)
   set(CMAKE_LINKER_TYPE LLD CACHE STRING "" FORCE)
   set(DAWN_USE_WAYLAND ON CACHE BOOL "" FORCE)
-elseif (CMAKE_SYSTEM_NAME MATCHES "^(Android|iOS)$")
+elseif (_system_name MATCHES "^(Android|iOS)$")
   set(DAWN_BUILD_MONOLITHIC_LIBRARY STATIC CACHE STRING "" FORCE)
   set(BUILD_SHARED_LIBS OFF CACHE BOOL "" FORCE)
 endif ()