message: Build OpenImageDenoise only in host builds.
  Fixes
diff: @@ -71,7 +71,7 @@ endif()
  # ==================================================================================================
  find_package(embree 3.0 QUIET PATHS /usr/lib64/cmake)
  -if (embree_FOUND AND NOT ANDROID)
  +if (embree_FOUND AND NOT ANDROID AND NOT IOS)
  message("Found embree in ${embree_DIR}")
  set(MKLDNN_THREADING "TBB")
  include(third_party/OpenImageDenoise/cmake/resource.cmake)
  @@ -488,12 +488,13 @@ if (NOT ANDROID AND NOT WEBGL AND NOT IOS)
  add_subdirectory(${TOOLS}/roughness-prefilter)
  add_subdirectory(${TOOLS}/skygen)
  add_subdirectory(${TOOLS}/specular-color)
  -endif()
  if (DENOISE_LIBRARY)
  add_subdirectory(${EXTERNAL}/OpenImageDenoise/tnt)
  endif()
  +endif()
  +
  # Generate exported executables for cross-compiled builds (Android, WebGL, and iOS)
  if (NOT CMAKE_CROSSCOMPILING)
  export(TARGETS matc cmgen filamesh mipgen resgen glslminifier FILE ${IMPORT_EXECUTABLES})
  