pytorch/scripts/build_mobile.sh
Jiakai Liu 3a0e35c9f2 [pytorch] deprecate static dispatch (#43564)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/43564

Static dispatch was originally introduced for mobile selective build.

Since we have added selective build support for dynamic dispatch and
tested it in FB production for months, we can deprecate static dispatch
to reduce the complexity of the codebase.

Test Plan: Imported from OSS

Reviewed By: ezyang

Differential Revision: D23324452

Pulled By: ljk53

fbshipit-source-id: d2970257616a8c6337f90249076fca1ae93090c7
2020-08-27 14:52:48 -07:00

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#!/bin/bash
##############################################################################
# Example command to build the mobile target.
##############################################################################
#
# This script shows how one can build a libtorch library optimized for mobile
# devices using host toolchain.
set -e
export BUILD_PYTORCH_MOBILE_WITH_HOST_TOOLCHAIN=1
CAFFE2_ROOT="$( cd "$(dirname "$0")"/.. ; pwd -P)"
echo "Bash: $(/bin/bash --version | head -1)"
echo "Caffe2 path: $CAFFE2_ROOT"
CMAKE_ARGS=()
CMAKE_ARGS+=("-DCMAKE_PREFIX_PATH=$(python -c 'from distutils.sysconfig import get_python_lib; print(get_python_lib())')")
CMAKE_ARGS+=("-DPYTHON_EXECUTABLE=$(python -c 'import sys; print(sys.executable)')")
CMAKE_ARGS+=("-DBUILD_CUSTOM_PROTOBUF=OFF")
CMAKE_ARGS+=("-DBUILD_SHARED_LIBS=OFF")
# custom build with selected ops
if [ -n "${SELECTED_OP_LIST}" ]; then
SELECTED_OP_LIST="$(cd $(dirname $SELECTED_OP_LIST); pwd -P)/$(basename $SELECTED_OP_LIST)"
echo "Choose SELECTED_OP_LIST file: $SELECTED_OP_LIST"
if [ ! -r ${SELECTED_OP_LIST} ]; then
echo "Error: SELECTED_OP_LIST file ${SELECTED_OP_LIST} not found."
exit 1
fi
CMAKE_ARGS+=("-DSELECTED_OP_LIST=${SELECTED_OP_LIST}")
fi
# If Ninja is installed, prefer it to Make
if [ -x "$(command -v ninja)" ]; then
CMAKE_ARGS+=("-GNinja")
fi
# Disable unused dependencies
CMAKE_ARGS+=("-DUSE_ROCM=OFF")
CMAKE_ARGS+=("-DUSE_CUDA=OFF")
CMAKE_ARGS+=("-DUSE_GFLAGS=OFF")
CMAKE_ARGS+=("-DUSE_OPENCV=OFF")
CMAKE_ARGS+=("-DUSE_LMDB=OFF")
CMAKE_ARGS+=("-DUSE_LEVELDB=OFF")
CMAKE_ARGS+=("-DUSE_MPI=OFF")
CMAKE_ARGS+=("-DUSE_OPENMP=OFF")
# Only toggle if VERBOSE=1
if [ "${VERBOSE:-}" == '1' ]; then
CMAKE_ARGS+=("-DCMAKE_VERBOSE_MAKEFILE=1")
fi
# Use-specified CMake arguments go last to allow overridding defaults
CMAKE_ARGS+=("$@")
# Now, actually build the Android target.
BUILD_ROOT=${BUILD_ROOT:-"$CAFFE2_ROOT/build_mobile"}
INSTALL_PREFIX=${BUILD_ROOT}/install
mkdir -p $BUILD_ROOT
cd $BUILD_ROOT
cmake "$CAFFE2_ROOT" \
-DCMAKE_INSTALL_PREFIX=$INSTALL_PREFIX \
-DCMAKE_BUILD_TYPE=Release \
"${CMAKE_ARGS[@]}"
# Cross-platform parallel build
if [ -z "$MAX_JOBS" ]; then
if [ "$(uname)" == 'Darwin' ]; then
MAX_JOBS=$(sysctl -n hw.ncpu)
else
MAX_JOBS=$(nproc)
fi
fi
echo "Will install headers and libs to $INSTALL_PREFIX for further project usage."
cmake --build . --target install -- "-j${MAX_JOBS}"
echo "Installation completed, now you can copy the headers/libs from $INSTALL_PREFIX to your project directory."