# Maintainer: Sven-Hendrik Haase <svenstaro@archlinux.org>
# Maintainer: Torsten Keßler <tpkessler@archlinux.org>
# Contributor: Stephen Zhang <zsrkmyn at gmail dot com>

_pkgname=pytorch
pkgbase="python-${_pkgname}-cxx11abi"
pkgname=("${pkgbase}" "${pkgbase}-opt" "${pkgbase}-cuda" "${pkgbase}-opt-cuda" "${pkgbase}-rocm" "${pkgbase}-opt-rocm")
pkgver=2.2.2
_pkgver=2.2.2
pkgrel=1
_pkgdesc='Tensors and Dynamic neural networks in Python with strong GPU acceleration (with CXX11 ABI)'
pkgdesc="${_pkgdesc}"
arch=('x86_64')
url="https://pytorch.org"
license=('BSD')
depends=('google-glog' 'gflags' 'opencv' 'openmp' 'openmpi' 'pybind11' 'python' 'python-yaml' 'libuv'
         'python-numpy' 'python-sympy' 'protobuf' 'ffmpeg' 'python-future' 'qt6-base'
         'intel-oneapi-mkl' 'python-typing_extensions' 'numactl' 'python-jinja'
         'python-networkx' 'python-filelock')
makedepends=('python' 'python-setuptools' 'python-yaml' 'python-numpy' 'cmake' 'cuda'
             'nccl' 'cudnn' 'git' 'rocm-hip-sdk' 'roctracer' 'miopen' 'magma-cuda' 'magma-hip'
             'ninja' 'pkgconfig' 'doxygen' 'vulkan-headers' 'shaderc' 'onednn')
source=("${_pkgname}::git+https://github.com/pytorch/pytorch.git#tag=v$_pkgver"
        # generated using parse-submodules
        "${pkgname}-ARM_NEON_2_x86_SSE::git+https://github.com/intel/ARM_NEON_2_x86_SSE.git"
        "${pkgname}-FP16::git+https://github.com/Maratyszcza/FP16.git"
        "${pkgname}-FXdiv::git+https://github.com/Maratyszcza/FXdiv.git"
        "${pkgname}-NNPACK::git+https://github.com/Maratyszcza/NNPACK.git"
        "${pkgname}-PeachPy::git+https://github.com/malfet/PeachPy.git"
        "${pkgname}-QNNPACK::git+https://github.com/pytorch/QNNPACK"
        "${pkgname}-VulkanMemoryAllocator::git+https://github.com/GPUOpen-LibrariesAndSDKs/VulkanMemoryAllocator.git"
        "${pkgname}-XNNPACK::git+https://github.com/google/XNNPACK.git"
        "${pkgname}-benchmark::git+https://github.com/google/benchmark.git"
        "${pkgname}-cpuinfo::git+https://github.com/pytorch/cpuinfo.git"
        "${pkgname}-cub::git+https://github.com/NVlabs/cub.git"
        "${pkgname}-cudnn-frontend::git+https://github.com/NVIDIA/cudnn-frontend.git"
        "${pkgname}-cutlass::git+https://github.com/NVIDIA/cutlass.git"
        "${pkgname}-eigen::git+https://gitlab.com/libeigen/eigen.git"
        "${pkgname}-fbgemm::git+https://github.com/pytorch/fbgemm"
        "${pkgname}-fbjni::git+https://github.com/facebookincubator/fbjni.git"
        "${pkgname}-flatbuffers::git+https://github.com/google/flatbuffers.git"
        "${pkgname}-fmt::git+https://github.com/fmtlib/fmt.git"
        "${pkgname}-foxi::git+https://github.com/houseroad/foxi.git"
        "${pkgname}-gemmlowp::git+https://github.com/google/gemmlowp.git"
        "${pkgname}-gloo::git+https://github.com/facebookincubator/gloo"
        "${pkgname}-googletest::git+https://github.com/google/googletest.git"
        "${pkgname}-ideep::git+https://github.com/intel/ideep"
        "${pkgname}-ios-cmake::git+https://github.com/Yangqing/ios-cmake.git"
        "${pkgname}-ittapi::git+https://github.com/intel/ittapi.git"
        "${pkgname}-json::git+https://github.com/nlohmann/json.git"
        "${pkgname}-kineto::git+https://github.com/pytorch/kineto"
        "${pkgname}-mimalloc::git+https://github.com/microsoft/mimalloc.git"
        "${pkgname}-nccl::git+https://github.com/NVIDIA/nccl"
        "${pkgname}-onnx-tensorrt::git+https://github.com/onnx/onnx-tensorrt"
        "${pkgname}-onnx::git+https://github.com/onnx/onnx.git"
        "${pkgname}-pocketfft::git+https://github.com/mreineck/pocketfft"
        "${pkgname}-protobuf::git+https://github.com/protocolbuffers/protobuf.git"
        "${pkgname}-psimd::git+https://github.com/Maratyszcza/psimd.git"
        "${pkgname}-pthreadpool::git+https://github.com/Maratyszcza/pthreadpool.git"
        "${pkgname}-pybind11::git+https://github.com/pybind/pybind11.git"
        "${pkgname}-sleef::git+https://github.com/shibatch/sleef"
        "${pkgname}-tbb::git+https://github.com/01org/tbb"
        "${pkgname}-tensorpipe::git+https://github.com/pytorch/tensorpipe.git"
        "${pkgname}-zstd::git+https://github.com/facebook/zstd.git"
        "python-pytorch-2_2_0-fix-cccl-build.patch::https://github.com/pytorch/pytorch/commit/2a440348958b3f0a2b09458bd76fe5959b371c0c.patch"
        python-pytorch-fix-cuda-12_4.patch
        fix_include_system.patch
        use-system-libuv.patch
        fix-building-for-torchvision.patch
        87773.patch
        disable-werror1.patch
        disable-werror2.patch
        disable-werror4.patch
        rocblas-batched.patch
        protobuf-23.patch
        glog-0.7.patch
        pytorch-rocm-jit.patch
        pytorch-missing-iostream.patch
        python-pytorch-ffmpeg6.patch
        python-pytorch-rocm-6.patch
        python-pytorch-goo-rocm-6.patch
        pytorch-remove-caffe2-binaries.patch)
b2sums=('SKIP'
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options=('!lto' '!debug')

get_pyver () {
  python -c 'import sys; print(str(sys.version_info[0]) + "." + str(sys.version_info[1]))'
}

prepare() {
  cd "${srcdir}/${_pkgname}"

  # generated using parse-submodules
  git submodule init

  git config submodule."android/libs/fbjni".url "${srcdir}/${pkgname}"-fbjni
  git config submodule."third_party/NNPACK".url "${srcdir}/${pkgname}"-NNPACK
  git config submodule."third_party/NNPACK_deps/FP16".url "${srcdir}/${pkgname}"-FP16
  git config submodule."third_party/NNPACK_deps/FXdiv".url "${srcdir}/${pkgname}"-FXdiv
  git config submodule."third_party/NNPACK_deps/psimd".url "${srcdir}/${pkgname}"-psimd
  git config submodule."third_party/NNPACK_deps/pthreadpool".url "${srcdir}/${pkgname}"-pthreadpool
  git config submodule."third_party/QNNPACK".url "${srcdir}/${pkgname}"-QNNPACK
  git config submodule."third_party/VulkanMemoryAllocator".url "${srcdir}/${pkgname}"-VulkanMemoryAllocator
  git config submodule."third_party/XNNPACK".url "${srcdir}/${pkgname}"-XNNPACK
  git config submodule."third_party/benchmark".url "${srcdir}/${pkgname}"-benchmark
  git config submodule."third_party/cpuinfo".url "${srcdir}/${pkgname}"-cpuinfo
  git config submodule."third_party/cub".url "${srcdir}/${pkgname}"-cub
  git config submodule."third_party/cudnn_frontend".url "${srcdir}/${pkgname}"-cudnn-frontend
  git config submodule."third_party/cutlass".url "${srcdir}/${pkgname}"-cutlass
  git config submodule."third_party/eigen".url "${srcdir}/${pkgname}"-eigen
  git config submodule."third_party/fbgemm".url "${srcdir}/${pkgname}"-fbgemm
  git config submodule."third_party/flatbuffers".url "${srcdir}/${pkgname}"-flatbuffers
  git config submodule."third_party/fmt".url "${srcdir}/${pkgname}"-fmt
  git config submodule."third_party/foxi".url "${srcdir}/${pkgname}"-foxi
  git config submodule."third_party/gemmlowp/gemmlowp".url "${srcdir}/${pkgname}"-gemmlowp
  git config submodule."third_party/gloo".url "${srcdir}/${pkgname}"-gloo
  git config submodule."third_party/googletest".url "${srcdir}/${pkgname}"-googletest
  git config submodule."third_party/ideep".url "${srcdir}/${pkgname}"-ideep
  git config submodule."third_party/ios-cmake".url "${srcdir}/${pkgname}"-ios-cmake
  git config submodule."third_party/ittapi".url "${srcdir}/${pkgname}"-ittapi
  git config submodule."third_party/kineto".url "${srcdir}/${pkgname}"-kineto
  git config submodule."third_party/mimalloc".url "${srcdir}/${pkgname}"-mimalloc
  git config submodule."third_party/nccl/nccl".url "${srcdir}/${pkgname}"-nccl
  git config submodule."third_party/neon2sse".url "${srcdir}/${pkgname}"-ARM_NEON_2_x86_SSE
  git config submodule."third_party/nlohmann".url "${srcdir}/${pkgname}"-json
  git config submodule."third_party/onnx".url "${srcdir}/${pkgname}"-onnx
  git config submodule."third_party/onnx-tensorrt".url "${srcdir}/${pkgname}"-onnx-tensorrt
  git config submodule."third_party/pocketfft".url "${srcdir}/${pkgname}"-pocketfft
  git config submodule."third_party/protobuf".url "${srcdir}/${pkgname}"-protobuf
  git config submodule."third_party/pybind11".url "${srcdir}/${pkgname}"-pybind11
  git config submodule."third_party/python-peachpy".url "${srcdir}/${pkgname}"-PeachPy
  git config submodule."third_party/sleef".url "${srcdir}/${pkgname}"-sleef
  git config submodule."third_party/tbb".url "${srcdir}/${pkgname}"-tbb
  git config submodule."third_party/tensorpipe".url "${srcdir}/${pkgname}"-tensorpipe
  git config submodule."third_party/zstd".url "${srcdir}/${pkgname}"-zstd

  git -c protocol.file.allow=always submodule update --init --recursive

  # Fix cmake prefix path (FS#78665)
  sed -i "s|cmake_prefix_path = _osp.*|cmake_prefix_path = '/usr/lib/cmake'|g" torch/utils/__init__.py

  # https://bugs.archlinux.org/task/64981
  patch -N torch/utils/cpp_extension.py "${srcdir}"/fix_include_system.patch

  # Use system libuv
  patch -Np1 -i "${srcdir}"/use-system-libuv.patch

  # fix https://github.com/pytorch/vision/issues/3695
  patch -Np1 -i "${srcdir}/fix-building-for-torchvision.patch"

  # Fix building against glog 0.6
  patch -Np1 -i "${srcdir}/87773.patch"

  # Fix building against glog 0.7
  patch -p1 -i "${srcdir}/glog-0.7.patch"

  # Disable -Werror
  patch -Np1 -d third_party/fbgemm -i "${srcdir}/disable-werror1.patch"
  patch -Np1 -d third_party/benchmark -i "${srcdir}/disable-werror2.patch"
  patch -Np1 -i "${srcdir}/disable-werror4.patch"

  # fix https://github.com/pytorch/pytorch/issues/97640
  patch -Np1 -i "${srcdir}/rocblas-batched.patch"

  # protobuf 23 requires C++17
  find -name CMakeLists.txt | xargs sed -e 's|CXX_STANDARD 14|CXX_STANDARD 17|' -e 's|CXX_STANDARD 11|CXX_STANDARD 17|' -i
  # Promote bool and {u,i}nit8 types to 16 bit as 8 bit types throw an exception in protobuf/abseil,
  # https://github.com/protocolbuffers/protobuf/blob/92619cdd433c5eed314d6b871060ac2340f52906/src/google/protobuf/repeated_field.h#L122-L129
  patch -Np1 -i "${srcdir}/protobuf-23.patch"

  patch -Np1 -i "${srcdir}/pytorch-missing-iostream.patch"

  # build against ffmpeg 6
  patch -Np1 -i "${srcdir}/python-pytorch-ffmpeg6.patch"

  patch -Np1 -i "${srcdir}/python-pytorch-rocm-6.patch"
  patch -Np1 -d third_party/gloo -i "${srcdir}/python-pytorch-goo-rocm-6.patch"

  patch -Np1 -i "${srcdir}/pytorch-remove-caffe2-binaries.patch"

  # https://github.com/pytorch/pytorch/issues/122169
  patch -Np1 -i "${srcdir}/python-pytorch-2_2_0-fix-cccl-build.patch"

  patch -Np1 -i "${srcdir}/python-pytorch-fix-cuda-12_4.patch"

  cd "${srcdir}"

  cp -r "${_pkgname}" "${_pkgname}-opt"
  cp -r "${_pkgname}" "${_pkgname}-cuda"
  cp -r "${_pkgname}" "${_pkgname}-opt-cuda"
  cp -r "${_pkgname}" "${_pkgname}-rocm"
  cp -r "${_pkgname}" "${_pkgname}-opt-rocm"
}

# Common build configuration, called in all package() functions.
_prepare() {
  export VERBOSE=1
  export PYTORCH_BUILD_VERSION="${pkgver}"
  export PYTORCH_BUILD_NUMBER=1

  # Check tools/setup_helpers/cmake.py, setup.py and CMakeLists.txt for a list of flags that can be set via env vars.
  export ATEN_NO_TEST=ON  # do not build ATen tests
  export USE_MKLDNN=ON
  export BUILD_CUSTOM_PROTOBUF=OFF
  # Caffe2 support was removed from pytorch with version 2.2.0
  export BUILD_CAFFE2=OFF
  export BUILD_CAFFE2_OPS=OFF
  # export BUILD_SHARED_LIBS=OFF
  export USE_FFMPEG=ON
  export USE_GFLAGS=ON
  export USE_GLOG=ON
  export USE_VULKAN=ON
  export BUILD_BINARY=ON
  export USE_OBSERVERS=ON
  export USE_OPENCV=ON
  # export USE_SYSTEM_LIBS=ON  # experimental, not all libs present in repos
  export USE_SYSTEM_NCCL=ON
  export NCCL_VERSION=$(pkg-config nccl --modversion)
  export NCCL_VER_CODE=$(sed -n 's/^#define NCCL_VERSION_CODE\s*\(.*\).*/\1/p' /usr/include/nccl.h)
  # export BUILD_SPLIT_CUDA=ON  # modern preferred build, but splits libs and symbols, ABI break
  # export USE_FAST_NVCC=ON  # parallel build with nvcc, spawns too many processes
  export USE_CUPTI_SO=ON  # make sure cupti.so is used as shared lib
  export CC=/usr/bin/gcc
  export CXX=/usr/bin/g++
  export CUDAHOSTCXX=/opt/cuda/bin/g++
  export CUDA_HOST_COMPILER="${CUDAHOSTCXX}"
  export CUDA_HOME=/opt/cuda
  # hide build-time CUDA devices
  export CUDA_VISIBLE_DEVICES=""
  export CUDNN_LIB_DIR=/usr/lib
  export CUDNN_INCLUDE_DIR=/usr/include
  export TORCH_NVCC_FLAGS="-Xfatbin -compress-all"
  # CUDA arch 8.7 is not supported (needed by Jetson boards, etc.)
  export TORCH_CUDA_ARCH_LIST="5.2;5.3;6.0;6.1;6.2;7.0;7.2;7.5;8.0;8.6;8.9;9.0;9.0+PTX"  #include latest PTX for future compat
  export OVERRIDE_TORCH_CUDA_ARCH_LIST="${TORCH_CUDA_ARCH_LIST}"
  export ROCM_PATH=/opt/rocm
  export HIP_ROOT_DIR=/opt/rocm
  export PYTORCH_ROCM_ARCH="gfx906;gfx908;gfx90a;gfx940;gfx941;gfx942;gfx1010;gfx1012;gfx1030;gfx1100;gfx1101;gfx1102"
  # Compile source code for supported GPU archs in parallel
  export HIPCC_COMPILE_FLAGS_APPEND="-parallel-jobs=$(nproc)"
  export HIPCC_LINK_FLAGS_APPEND="-parallel-jobs=$(nproc)"
}

build() {
  cd "${srcdir}/${_pkgname}"
  echo "Building without cuda or rocm and without non-x86-64 optimizations"
  _prepare
  export USE_CUDA=0
  export USE_CUDNN=0
  export USE_ROCM=0
  export GLIBCXX_USE_CXX11_ABI=1
  echo "add_definitions(-march=x86-64)" >> cmake/MiscCheck.cmake
  # this horrible hack is necessary because the current release
  # ships inconsistent CMake which tries to build objects before
  # their dependencies, build twice when dependencies are available
  python setup.py build || python setup.py build

  cd "${srcdir}/${_pkgname}-opt"
  echo "Building without cuda or rocm and with non-x86-64 optimizations"
  _prepare
  export USE_CUDA=0
  export USE_CUDNN=0
  export USE_ROCM=0
  export GLIBCXX_USE_CXX11_ABI=1
  echo "add_definitions(-march=haswell)" >> cmake/MiscCheck.cmake
  # same horrible hack as above
  python setup.py build || python setup.py build

  cd "${srcdir}/${_pkgname}-cuda"
  echo "Building with cuda and without non-x86-64 optimizations"
  _prepare
  export USE_CUDA=1
  export USE_CUDNN=1
  export USE_ROCM=0
  export GLIBCXX_USE_CXX11_ABI=1
  export MAGMA_HOME=/opt/cuda/targets/x86_64-linux
  cd "${srcdir}/${_pkgname}-cuda"
  echo "add_definitions(-march=x86-64)" >> cmake/MiscCheck.cmake
  # same horrible hack as above
  python setup.py build || python setup.py build

  cd "${srcdir}/${_pkgname}-opt-cuda"
  echo "Building with cuda and with non-x86-64 optimizations"
  export USE_CUDA=1
  export USE_CUDNN=1
  export USE_ROCM=0
  export GLIBCXX_USE_CXX11_ABI=1
  export MAGMA_HOME=/opt/cuda/targets/x86_64-linux
  _prepare
  echo "add_definitions(-march=haswell)" >> cmake/MiscCheck.cmake
  # same horrible hack as above
  python setup.py build || python setup.py build

  cd "${srcdir}/${_pkgname}-rocm"
  echo "Building with rocm and without non-x86-64 optimizations"
  _prepare
  export USE_CUDA=0
  export USE_CUDNN=0
  export USE_ROCM=1
  export GLIBCXX_USE_CXX11_ABI=1
  export MAGMA_HOME=/opt/rocm
  echo "add_definitions(-march=x86-64)" >> cmake/MiscCheck.cmake
  # Conversion of CUDA to ROCm source files
  python tools/amd_build/build_amd.py
  patch -Np1 -i "$srcdir/pytorch-rocm-jit.patch"
  # same horrible hack as above
  python setup.py build || python setup.py build
  
  cd "${srcdir}/${_pkgname}-opt-rocm"
  echo "Building with rocm and with non-x86-64 optimizations"
  _prepare
  export USE_CUDA=0
  export USE_CUDNN=0
  export USE_ROCM=1
  export GLIBCXX_USE_CXX11_ABI=1
  export MAGMA_HOME=/opt/rocm
  echo "add_definitions(-march=haswell)" >> cmake/MiscCheck.cmake
  # Conversion of CUDA to ROCm source files
  python tools/amd_build/build_amd.py
  patch -Np1 -i "$srcdir/pytorch-rocm-jit.patch"
  # same horrible hack as above
  python setup.py build || python setup.py build
}

_package() {
  # Prevent setup.py from re-running CMake and rebuilding
  sed -e 's/RUN_BUILD_DEPS = True/RUN_BUILD_DEPS = False/g' -i setup.py

  python setup.py install --root="${pkgdir}"/ --optimize=1 --skip-build

  install -Dm644 LICENSE "${pkgdir}/usr/share/licenses/${pkgname}/LICENSE"

  pytorchpath="usr/lib/python$(get_pyver)/site-packages/torch"
  install -d "${pkgdir}/usr/lib"

  # put CMake files in correct place
  mv "${pkgdir}/${pytorchpath}/share/cmake" "${pkgdir}/usr/lib/cmake"

  # put C++ API in correct place
  mv "${pkgdir}/${pytorchpath}/include" "${pkgdir}/usr/include"
  find "${pkgdir}/${pytorchpath}"/lib/ -type f,l \( -iname '*.so' -or -iname '*.so*' \) -print0 | while read -rd $'\0' _lib; do
    mv "${_lib}" "${pkgdir}"/usr/lib/
  done

  # clean up duplicates
  rm -r "${pkgdir}/usr/include/pybind11"
  rm "${pkgdir}"/usr/include/*.h

  # Python module is hardcoded so look there at runtime
  ln -s /usr/include "${pkgdir}/${pytorchpath}/include"
  find "${pkgdir}"/usr/lib -maxdepth 1 -type f,l \( -iname '*.so' -or -iname '*.so*' \) -print0 | while read -rd $'\0' _lib; do
    ln -s ${_lib#"$pkgdir"} "${pkgdir}/${pytorchpath}/lib/"
  done
}

package_python-pytorch-cxx11abi() {
  pkgdesc="${_pkgdesc}"
  conflicts=(python-pytorch)
  provides=(python-pytorch=${pkgver})
  cd "${srcdir}/${_pkgname}"
  _package
}

package_python-pytorch-cxx11abi-opt() {
  pkgdesc="${_pkgdesc} (with AVX2 CPU optimizations)"
  conflicts=(python-pytorch)
  provides=(python-pytorch=${pkgver})

  cd "${srcdir}/${_pkgname}-opt"
  _package
}

package_python-pytorch-cxx11abi-cuda() {
  pkgdesc="${_pkgdesc} (with CUDA)"
  depends+=(cuda nccl cudnn magma-cuda onednn)
  conflicts=(python-pytorch)
  provides=(python-pytorch=${pkgver})

  cd "${srcdir}/${_pkgname}-cuda"
  _package
}

package_python-pytorch-cxx11abi-opt-cuda() {
  pkgdesc="${_pkgdesc} (with CUDA and AVX2 CPU optimizations)"
  depends+=(cuda nccl cudnn magma-cuda onednn)
  conflicts=(python-pytorch)
  provides=(python-pytorch=${pkgver} python-pytorch-cuda=${pkgver})

  cd "${srcdir}/${_pkgname}-opt-cuda"
  _package
}

package_python-pytorch-cxx11abi-rocm() {
  pkgdesc="${_pkgdesc} (with ROCm)"
  depends+=(rocm-hip-sdk roctracer miopen magma-hip onednn)
  conflicts=(python-pytorch)
  provides=(python-pytorch=${pkgver})

  cd "${srcdir}/${_pkgname}-rocm"
  _package
}

package_python-pytorch-cxx11abi-opt-rocm() {
  pkgdesc="${_pkgdesc} (with ROCm and AVX2 CPU optimizations)"
  depends+=(rocm-hip-sdk roctracer miopen magma-hip onednn)
  conflicts=(python-pytorch)
  provides=(python-pytorch=${pkgver} python-pytorch-rocm=${pkgver})

  cd "${srcdir}/${_pkgname}-opt-rocm"
  _package
}

# vim:set ts=2 sw=2 et: