message: Temporarily fix the makefile build breakage by excluding ruy/prepare_packed_matrices.cc
  Currently, the lite/tools/make/build_lib.sh fails with the following error.
  tensorflow/lite/tools/make/downloads/ruy/ruy/prepare_packed_matrices.cc:16:41: fatal error: ruy/prepare_packed_matrices.h: No such file or directory
  compilation terminated.
diff: @@ -221,6 +221,10 @@ else
  CORE_CC_EXCLUDE_SRCS += tensorflow/lite/minimal_logging_ios.cc
  endif
  +# Temporary fix for ruy compilation error.
  +# TODO(b/158800055): Remove this hack once the ruy version is correctly bumped.
  +CORE_CC_EXCLUDE_SRCS += tensorflow/lite/tools/make/downloads/ruy/ruy/prepare_packed_matrices.cc
  +
  # Filter out all the excluded files.
  TF_LITE_CC_SRCS := $(filter-out $(CORE_CC_EXCLUDE_SRCS), $(CORE_CC_ALL_SRCS))
  