Forums - snpe-udo-package-generator error on v1.66 SDK

When I create a custom operator according to the UDO tutorial in the document, I encounter the following error:

snpe-udo-package-generator -p $SNPE_ROOT/examples/NativeCpp/UdoExample/Softmax/config/Softmax.json -o $SNPE_ROOT/models/inception_v3/

2024-05-20 18:38:22,210 - 214 - INFO - Creating new package at: ./snpe-1.66.0.3729/models/inception_v3/SoftmaxUdoPackage

2024-05-20 18:38:22,211 - 219 - WARNING - DSP Operation detected but HEXAGON_SDK_ROOT is not set. Please note HEXAGON_SDK_ROOT needs to be set to compile the package.

Traceback (most recent call last):

  File "./snpe-1.66.0.3729/bin/x86_64-linux-clang/snpe-udo-package-generator", line 35, in <module>

    config_path=args.config_path)

  File "./snpe-1.66.0.3729/lib/python/qti/aisw/converters/backend/custom_ops/snpe_udo_config.py", line 243, in setup_file_paths

    self.copy_udo_dir("utils", CUSTOM_OP_DIR, cpu_util_src_dir)

NameError: name 'CUSTOM_OP_DIR' is not defined

Looking at the lib/python/qti/aisw/converters/backend/custom_ops/snpe_udo_config.py,  It looks like I need to set the env "QNN_SDK_ROOT" , then the variable 'CUSTOM_OP_DIR' will be set.

QNN_SDK_ROOT = os.getenv("QNN_SDK_ROOT")

if QNN_SDK_ROOT is not None:

    SHARE_LOC_PREFIX = os.path.join(os.path.abspath(QNN_SDK_ROOT), 'target', 'x86_64-linux-clang', 'share', 'OpPackageGenerator')

    CUSTOM_OP_DIR = os.path.join(SHARE_LOC_PREFIX, 'CustomOp')