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cmake_minimum_required(VERSION 3.18) |
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project(onde_inference_dart) |
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# ── Rust source directory ───────────────────────────────────────────────────── |
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# CMakeLists.txt lives in android/, so ../rust resolves to the sibling rust/ dir. |
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set(RUST_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../rust") |
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# ── Map Android ABI → Cargo target triple ──────────────────────────────────── |
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if(ANDROID_ABI STREQUAL "arm64-v8a") |
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set(CARGO_TARGET "aarch64-linux-android") |
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elseif(ANDROID_ABI STREQUAL "armeabi-v7a") |
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set(CARGO_TARGET "armv7-linux-androideabi") |
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elseif(ANDROID_ABI STREQUAL "x86_64") |
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set(CARGO_TARGET "x86_64-linux-android") |
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elseif(ANDROID_ABI STREQUAL "x86") |
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set(CARGO_TARGET "i686-linux-android") |
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else() |
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message(FATAL_ERROR "Unsupported Android ABI: ${ANDROID_ABI}") |
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endif() |
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# ── Output path for the compiled Rust shared library ───────────────────────── |
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set(LIB_OUTPUT |
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"${RUST_DIR}/target/${CARGO_TARGET}/release/libonde_inference_dart.so" |
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) |
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# ── Custom build step: invoke cargo ────────────────────────────────────────── |
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# Requires the Android NDK cross-compilation toolchain to be on PATH, or |
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# a .cargo/config.toml in the Rust crate with the correct linker overrides |
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# for each Android target. |
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add_custom_command( |
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OUTPUT ${LIB_OUTPUT} |
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COMMAND cargo build |
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--release |
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--target ${CARGO_TARGET} |
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--manifest-path "${RUST_DIR}/Cargo.toml" |
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WORKING_DIRECTORY ${RUST_DIR} |
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COMMENT "Building onde_inference_dart for ${CARGO_TARGET}…" |
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VERBATIM |
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) |
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# Dummy target that depends on the cargo output so CMake tracks it correctly. |
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add_custom_target(onde_inference_dart_cargo_build ALL |
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DEPENDS ${LIB_OUTPUT} |
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) |
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# ── Import the built .so as a pre-built shared library ─────────────────────── |
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add_library(onde_inference_dart SHARED IMPORTED GLOBAL) |
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set_target_properties(onde_inference_dart PROPERTIES |
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IMPORTED_LOCATION ${LIB_OUTPUT} |
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) |
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add_dependencies(onde_inference_dart onde_inference_dart_cargo_build) |