--- a/cmake/MirCommon.cmake	2026-10-19 15:29:59.222557533 +0200
+++ b/cmake/MirCommon.cmake	2026-10-19 15:29:59.230595127 +0200
@@ -347,6 +347,9 @@ function (mir_check_no_unreleased_symbol
   add_dependencies(${DEPENDENT_TARGET} ${TARGET_NAME})
 endfunction()
 
+set(MIR_WAYLAND_GENERATOR "${CMAKE_BINARY_DIR}/bin/mir_wayland_generator" CACHE FILEPATH
+    "Wayland wrapper generator, a build host one when cross compiling")
+
 function (mir_generate_protocol_wrapper TARGET_NAME NAME_PREFIX PROTOCOL_FILE)
   if (NAME_PREFIX STREQUAL "")
     set(NAME_PREFIX "@") # won't match anything
@@ -359,9 +362,9 @@ function (mir_generate_protocol_wrapper
     OUTPUT "${OUTPUT_PATH_HEADER}" "${OUTPUT_PATH_SRC}"
     VERBATIM
     COMMAND "sh" "-c"
-    "${CMAKE_BINARY_DIR}/bin/mir_wayland_generator ${NAME_PREFIX} ${PROTOCOL_PATH} header > ${OUTPUT_PATH_HEADER}"
+    "${MIR_WAYLAND_GENERATOR} ${NAME_PREFIX} ${PROTOCOL_PATH} header > ${OUTPUT_PATH_HEADER}"
     COMMAND "sh" "-c"
-    "${CMAKE_BINARY_DIR}/bin/mir_wayland_generator ${NAME_PREFIX} ${PROTOCOL_PATH} source > ${OUTPUT_PATH_SRC}"
+    "${MIR_WAYLAND_GENERATOR} ${NAME_PREFIX} ${PROTOCOL_PATH} source > ${OUTPUT_PATH_SRC}"
     DEPENDS mir_wayland_generator "${PROTOCOL_PATH}"
   )
   target_sources("${TARGET_NAME}" PRIVATE "${OUTPUT_PATH_HEADER}" "${OUTPUT_PATH_SRC}")