Build libtorch for android error, ‘ATen/core/TensorBody.h’ file not found

Sining_Sun · October 25, 2020, 1:56am

Hi all,

I just want to build libtorch for android. My pytorch verson is 1.6 and ndk version is t19c. I build the libtorch is the follow command:
BUILD_CAFFE2_MOBILE=1 ./scripts/build_android.sh，
But I got this error:

/workspace/tvm/pytorch-mobile/pytorch-1.6/aten/src/ATen/Tensor.h:3:10: fatal error: ‘ATen/core/TensorBody.h’ file not found
#include <ATen/core/TensorBody.h>
^~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
caffe2/CMakeFiles/torch_cpu.dir/build.make:7262: recipe for target ‘caffe2/CMakeFiles/torch_cpu.dir/operators/rms_norm_op.cc.o’ failed
make[2]: *** [caffe2/CMakeFiles/torch_cpu.dir/operators/rms_norm_op.cc.o] Error 1
make[2]: *** Waiting for unfinished jobs…
CMakeFiles/Makefile2:1362: recipe for target ‘caffe2/CMakeFiles/torch_cpu.dir/all’ failed
make[1]: *** [caffe2/CMakeFiles/torch_cpu.dir/all] Error 2
Makefile:140: recipe for target ‘all’ failed
make: *** [all] Error 2

Anyone knows the reason and how to solve this issue?

ptrblck · October 25, 2020, 9:49am

Have you updated all submodules via git submodule update --init --recursive and cleaned a recent build via python setup.py clean?

Sining_Sun · October 25, 2020, 3:33pm

I just clone the pytorch 1.6 again with --recursive option. When I compile with the following command, I still got the same error:

BUILD_CAFFE2_MOBILE=1 ./scripts/build_android.sh，

I don’t know if this is a bug? Previously I have built libtorch.a using pytorch version 1.4 sucessfully with cmd:

BUILD_PYTORCH_MOBILE=1 ./scripts/build_android.sh.

and I can inference using C++ code.

I also want to know the diffenrence between flags BUILD_PYTORCH_MOBILE (v1.4) and BUILD_CAFFE2_MOBILE(v1.6).

Thank you very much

Sining_Sun · October 26, 2020, 1:23am

I just found that the pytorch I cloned from github is version 1.8. Maybe this is a bug of version 1.8?

Paran0 · August 8, 2021, 6:51pm

Same thing happening to me in realease/1.9.0

Linbin · August 24, 2021, 11:59pm

I think that script is for Caffe2. Use this one for PyTorch android:

github.com

pytorch/pytorch/blob/main/scripts/build_pytorch_android.sh

#!/bin/bash
set -eux

##############################################################################
# Master script to build PyTorch Android library with Java bindings.
##############################################################################
# Example usage:
# - Build default AARs:
#   scripts/build_pytorch_android.sh
#
# - Build for specific ABI(s):
#   scripts/build_pytorch_android.sh armeabi-v7a
#   scripts/build_pytorch_android.sh arm64-v8a,x86,x86_64
#
# Script's workflow:
# 1. Builds libtorch for android for specified android abisi (by default for all 4).
# Custom list of android abis can be specified as a bash argument as comma separated list.
# For example just for testing on android x86 emulator we need only x86 build.
# ./scripts/build_pytorch_android.sh x86
# 2. Creates symbolic links to android/pytorch_android/src/main/jniLibs/${abi} for libtorch build output,

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