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Arm backend: Add arm-baremetal CMake preset #13042

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Merged
merged 1 commit into from
Aug 4, 2025
Merged

Arm backend: Add arm-baremetal CMake preset #13042

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9 changes: 9 additions & 0 deletions CMakePresets.json
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Original file line number Diff line number Diff line change
Expand Up @@ -128,6 +128,15 @@
"EXECUTORCH_BUILD_PRESET_FILE": "${sourceDir}/tools/cmake/preset/zephyr.cmake",
"CMAKE_TOOLCHAIN_FILE": "${sourceDir}/examples/zephyr/x86_64-linux-arm-zephyr-eabi-gcc.cmake"
}
},
{
"name": "arm-baremetal",
"displayName": "Build ExecuTorch for Arm baremetal",
"inherits": ["common"],
"cacheVariables": {
"EXECUTORCH_BUILD_PRESET_FILE": "${sourceDir}/tools/cmake/preset/arm_baremetal.cmake",
"CMAKE_TOOLCHAIN_FILE": "${sourceDir}/examples/arm/ethos-u-setup/arm-none-eabi-gcc.cmake"
}
}
]
}
48 changes: 10 additions & 38 deletions backends/arm/scripts/build_executorch.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -19,8 +19,8 @@ _setup_msg="please refer to ${et_root_dir}/examples/arm/setup.sh to properly ins

et_build_root="${et_root_dir}/arm_test"
build_type="Release"
build_devtools=false
build_with_etdump=false
build_devtools=OFF
build_with_etdump=OFF

help() {
echo "Usage: $(basename $0) [options]"
Expand All @@ -38,8 +38,8 @@ for arg in "$@"; do
-h|--help) help ;;
--et_build_root=*) et_build_root="${arg#*=}";;
--build_type=*) build_type="${arg#*=}";;
--devtools) build_devtools=true ;;
--etdump) build_with_etdump=true ;;
--devtools) build_devtools=ON ;;
--etdump) build_with_etdump=ON ;;
--toolchain=*) toolchain="${arg#*=}";;
*)
;;
Expand All @@ -48,7 +48,7 @@ done

if [[ ${toolchain} == "arm-none-eabi-gcc" ]]; then
toolchain_cmake=${et_root_dir}/examples/arm/ethos-u-setup/${toolchain}.cmake
elif [[ ${toolchain} == "arm-zephyr-eabi-gcc" ]]; then
elif [[ ${toolchain} == "arm-zephyr-eabi-gcc" ]]; then
toolchain_cmake=${et_root_dir}/examples/zephyr/x86_64-linux-arm-zephyr-eabi-gcc.cmake
else
echo "Error: Invalid toolchain selection, provided: ${tolchain}"
Expand All @@ -74,40 +74,12 @@ cd "${et_root_dir}"
echo "Build ExecuTorch target libs ${build_type} into '${et_build_dir}'" ;
echo "--------------------------------------------------------------------------------" )

build_devtools_flags=" -DEXECUTORCH_BUILD_DEVTOOLS=OFF "
if [ "$build_devtools" = true ] ; then
build_devtools_flags=" -DEXECUTORCH_BUILD_DEVTOOLS=ON "
fi

build_with_etdump_flags=" -DEXECUTORCH_ENABLE_EVENT_TRACER=OFF "
if [ "$build_with_etdump" = true ] ; then
# Add DevTools flags use in the Target build below
build_with_etdump_flags="-DEXECUTORCH_BUILD_DEVTOOLS=ON \
-DEXECUTORCH_ENABLE_EVENT_TRACER=ON \
-DEXECUTORCH_BUILD_EXTENSION_DATA_LOADER=OFF \
-DFLATCC_ALLOW_WERROR=OFF "
fi

echo "Building with Devtools: ${build_devtools_flags} ${build_with_etdump_flags}"


# Build
cmake \
-DCMAKE_INSTALL_PREFIX=${et_build_dir} \
-DCMAKE_BUILD_TYPE=${build_type} \
-DCMAKE_TOOLCHAIN_FILE="${toolchain_cmake}" \
-DEXECUTORCH_BUILD_EXECUTOR_RUNNER=OFF \
-DEXECUTORCH_BUILD_ARM_BAREMETAL=ON \
-DEXECUTORCH_BUILD_KERNELS_QUANTIZED=ON \
-DEXECUTORCH_BUILD_EXTENSION_RUNNER_UTIL=ON \
-DEXECUTORCH_BUILD_CORTEX_M=ON \
-DEXECUTORCH_ENABLE_LOGGING=ON \
${build_devtools_flags} \
${build_with_etdump_flags} \
-B"${et_build_dir}" \
"${et_root_dir}"

echo "[$(basename $0)] Configured CMAKE"
cmake -DCMAKE_TOOLCHAIN_FILE=${toolchain_cmake} \
-DCMAKE_BUILD_TYPE=Release \
-DEXECUTORCH_BUILD_DEVTOOLS=$build_devtools \
-DEXECUTORCH_BUILD_ARM_ETDUMP=$build_with_etdump \
--preset arm-baremetal -B${et_build_dir}

cmake --build ${et_build_dir} -j$(nproc) --target install --config ${build_type} --

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25 changes: 25 additions & 0 deletions tools/cmake/preset/arm_baremetal.cmake
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Original file line number Diff line number Diff line change
@@ -0,0 +1,25 @@
# Copyright 2025 Arm Limited and/or its affiliates.
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@digantdesai digantdesai Aug 1, 2025

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Though this PR is OK, I want to brainstorm here a bit more.

There are two, I think, orthogonal things we are mixing here, (1) Arm-ness, (2) Baremetal-ness. Can we split? For the preset its OK, I am talking about things like EXECUTORCH_BUILD_ARM_BAREMETAL the things it guards are not strictly related to Arm.

This will come up when we try to do Arm Cortex-m + Ethos on Zephyr. Passing ARM_BAREMETAL would be confusing at best.

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@AdrianLundell AdrianLundell Aug 4, 2025

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Good point, changing it to something like EXECUTORCH_BUILD_ARM_ETHOSU seems reasonable to me.

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@digantdesai digantdesai Aug 6, 2025

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I guess depends on the things we want to guard with this build flavor. We need to split this EXEUCTORCH_BUILD_ARM_BAREMETAL into EXECUTORCH_BUILD_ARM_ETHOSU and EXECUTORCH_BUILD_BAREMETAL. I can also see Cortex-M (no NPU) builds and not sure if the ETHOSU is the right suffix either.

#
# This source code is licensed under the BSD-style license found in the
# LICENSE file in the root directory of this source tree.

set(CMAKE_INSTALL_PREFIX "${CMAKE_BINARY_DIR}")
set_overridable_option(EXECUTORCH_BUILD_EXECUTOR_RUNNER OFF)
set_overridable_option(EXECUTORCH_BUILD_ARM_BAREMETAL ON)
set_overridable_option(EXECUTORCH_BUILD_KERNELS_QUANTIZED ON)
set_overridable_option(EXECUTORCH_BUILD_EXTENSION_RUNNER_UTIL ON)
set_overridable_option(EXECUTORCH_BUILD_CORTEX_M ON)
set_overridable_option(EXECUTORCH_ENABLE_LOGGING ON)

define_overridable_option(
EXECUTORCH_BUILD_ARM_ETDUMP "Build etdump support for Arm" BOOL OFF
)

if("${EXECUTORCH_BUILD_ARM_ETDUMP}")
set(EXECUTORCH_BUILD_DEVTOOLS ON)
set(EXECUTORCH_ENABLE_EVENT_TRACER ON)
set(EXECUTORCH_BUILD_EXTENSION_DATA_LOADER OFF)
set(FLATCC_ALLOW_WERROR OFF)
else()
set(EXECUTORCH_ENABLE_EVENT_TRACER OFF)
endif()
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