Fatal Bazel error when building benchmark model for LiteRT with bazel 7.6.1

[SuhailMunshi]

Hi,
I am looking to build LiteRT benchmark model with Bazel - and have run into some issues. Any suggestions would be appreciated!

I appear to be getting build errors with the command below, but only after the commit hash 01ed81c.
Checking out the commit before it seems to build fine.

OS: MacOS 15.5

Bazel Commands:

export MACOS_SDK_VERSION=$(xcrun --sdk macosx --show-sdk-version)
 
bazel build -c dbg --macos_sdk_version=$MACOS_SDK_VERSION --config macos //litert/tools:benchmark_model --define xnn_enable_profiler=true \
    --define tflite_with_xnnpack=true \
    --define xnn_enable_arm_i8mm=true \
    --define tflite_with_xnnpack_qs8=true \
    --define tflite_with_xnnpack_qu8=true

Building after the commit hash shown above gives the following bazel errors:

[INFO 13:49:52.774 src/main/cpp/option_processor.cc:407] Looking for the following rc files: /etc/bazel.bazelrc,/Users/MyUser/Google/LiteRT/.bazelrc,/Users/MyUser/.bazelrc
[INFO 13:49:52.774 src/main/cpp/rc_file.cc:56] Parsing the RcFile /Users/MyUser/Google/LiteRT/.bazelrc
[INFO 13:49:52.777 src/main/cpp/rc_file.cc:56] Parsing the RcFile /Users/MyUser/Google/LiteRT/.litert_configure.bazelrc
[FATAL 13:49:52.777 src/main/cpp/blaze.cc:1105] Unexpected error reading config file '/Users/MyUser/Google/LiteRT/.litert_configure.bazelrc': (error: 2): No such file or directory

[gaikwadrahul8]

Hi, @SuhailMunshi
I apologize for the delay in my response, Thank you for bringing this issue to our attention it seems like the core of the issue is that the build system now strictly requires the presence of a generated configuration file .litert_configure.bazelrc which must be created by a dedicated script before invoking Bazel so please give it try with below steps and see is it working as expected or not ? Make sure that after running ./configure command give the path to a valid Python interpreter, The version and location of the macOS SDK, The path to the Clang compiler provided by Xcode etc.

1 git clone https://github.com/google-ai-edge/LiteRT.git
2 cd LiteRT
3 git submodule update --init --recursive
4 ./configure

5 export MACOS_SDK_VERSION=$(xcrun --sdk macosx --show-sdk-version)
bazel build -c dbg --macos_sdk_version=$MACOS_SDK_VERSION --config macos //litert/tools:benchmark_model --define xnn_enable_profiler=true \
    --define tflite_with_xnnpack=true \
    --define xnn_enable_arm_i8mm=true \
    --define tflite_with_xnnpack_qs8=true \
    --define tflite_with_xnnpack_qu8=true

Thank you for your cooperation and patience.

[SuhailMunshi]

Thank you, this works without issue.