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# Maintainer : Daniel Bermond < yahoo-com: danielbermond >

pkgname=caffe2-git
pkgver=0.8.1.r19.gf0ea8046
pkgrel=2
pkgdesc='A new lightweight, modular, and scalable deep learning framework (git version, gpu enabled)'
arch=('x86_64')
url='http://caffe2.ai/'
license=('BSD')
depends=(
    # official repositories:
        # required:
            'google-glog' 'protobuf' 'python2' 'python2-numpy' 'python2-protobuf' 'cuda'
            'cudnn'
        # not required but enabled in build:
            'gflags' 'gtest' 'openmp' 'leveldb' 'lmdb' 'openmpi' 'snappy' 'zeromq'
            'hiredis'
        # python2:
            'python2-flask' 'python2-future' 'graphviz' 'python2-hypothesis'
            'python2-jupyter_core' 'python2-matplotlib' 'python2-pydot' 'python2-yaml'
            'python2-requests' 'python2-scipy' 'python2-setuptools' 'python2-six'
            'python2-tornado' 'python2-gflags' 'python2-pyzmq'
    # AUR:
        # not required but enabled in build:
            'nccl'
        # python2:
            'python2-nvd3' 'python2-scikit-image' 'python2-glog' 'python2-leveldb'
            'python2-lmdb'
)
makedepends=(
    # official repositories:
        'git' 'cmake' 'gcc5' 'ninja'
    # AUR:
        'confu-git' 'python-peachpy-git'
)
provides=('caffe2')
conflicts=('caffe' 'caffe-cpu' 'caffe-git' 'caffe-cpu-git'
           'caffe2' 'caffe2-cpu' 'caffe2-cpu-git')
options=('!emptydirs')
source=(
    # main source:
        "$pkgname"::'git+https://github.com/caffe2/caffe2.git'
    # git submodules:
        'submodule-pybind11'::'git+https://github.com/pybind/pybind11.git'
        'submodule-nccl'::'git+https://github.com/nvidia/nccl.git'
        'submodule-cnmem'::'git+https://github.com/nvidia/cnmem.git'
        'submodule-cub'::'git+https://github.com/NVlabs/cub.git'
        'submodule-eigen'::'git+https://github.com/RLovelett/eigen.git'
        'submodule-googletest'::'git+https://github.com/google/googletest.git'
        'submodule-nervanagpu'::'git+https://github.com/NervanaSystems/nervanagpu.git'
        'submodule-benchmark'::'git+https://github.com/google/benchmark.git'
        'submodule-protobuf'::'git+https://github.com/google/protobuf.git'
        'submodule-android-cmake'::'git+https://github.com/Yangqing/android-cmake.git'
        'submodule-ios-cmake'::'git+https://github.com/Yangqing/ios-cmake.git'
        'submodule-NNPACK'::'git+https://github.com/Maratyszcza/NNPACK.git'
        'submodule-gloo'::'git+https://github.com/facebookincubator/gloo'
        'submodule-NNPACK_deps-pthreadpool'::'git+https://github.com/Maratyszcza/pthreadpool.git'
        'submodule-NNPACK_deps-FXdiv'::'git+https://github.com/Maratyszcza/FXdiv.git'
        'submodule-NNPACK_deps-FP16'::'git+https://github.com/Maratyszcza/FP16.git'
        'submodule-NNPACK_deps-psimd'::'git+https://github.com/Maratyszcza/psimd.git'
)
sha256sums=('SKIP'
            'SKIP'
            'SKIP'
            'SKIP'
            'SKIP'
            'SKIP'
            'SKIP'
            'SKIP'
            'SKIP'
            'SKIP'
            'SKIP'
            'SKIP'
            'SKIP'
            'SKIP'
            'SKIP'
            'SKIP'
            'SKIP'
            'SKIP'
)

prepare() {
    cd "$pkgname"
    local _submodule_list="pybind11 nccl cnmem cub eigen googletest nervanagpu benchmark \
                           protobuf android-cmake ios-cmake NNPACK gloo \
                           NNPACK_deps/pthreadpool NNPACK_deps/FXdiv NNPACK_deps/FP16 \
                           NNPACK_deps/psimd"
    git submodule init
    for _submodule in $_submodule_list
    do
        local _submodule_dir="submodule-$(printf "%s" "${_submodule}" | tr '/' '-')"
        git config --local "submodule.third_party/${_submodule}.url" "${srcdir}/${_submodule_dir}"
    done
    unset _submodule
    git submodule update
}

pkgver() {
    cd "$pkgname"
    
    # git, tags available
    git describe --long --tags | sed 's/\([^-]*-g\)/r\1/;s/-/./g;s/^v//'
}

build() {
    cd "$pkgname"
    mkdir -p build
    cd build
    
    cmake \
        -DBLAS:STRING='Eigen' \
        \
        -DBUILD_BINARY:BOOL='ON' \
        -DBUILD_PYTHON:BOOL='ON' \
        -DBUILD_SHARED_LIBS:BOOL='ON' \
        \
        -DBUILD_TEST:BOOL='OFF' \
        \
        -DCAFFE2_CPU_FLAGS:BOOL='OFF' \
        -DCMAKE_BUILD_TYPE:STRING='Release' \
        -DCMAKE_COLOR_MAKEFILE:BOOL='ON' \
        -DCMAKE_CXX_COMPILER='/usr/bin/g++-5' \
        -DCMAKE_CXX_FLAGS:STRING="$(printf '%s' "$CXXFLAGS" | sed 's/-fno-plt//')" \
        -DCMAKE_C_COMPILER='/usr/bin/gcc-5' \
        -DCMAKE_C_FLAGS:STRING="$(printf '%s' "$CFLAGS" | sed 's/-fno-plt//')" \
        -DCMAKE_INSTALL_PREFIX:PATH='/usr' \
        -DCMAKE_SKIP_INSTALL_RPATH:BOOL='NO' \
        -DCMAKE_SKIP_RPATH:BOOL='NO' \
        -DCMAKE_VERBOSE_MAKEFILE:BOOL='FALSE' \
        \
        -DCUDA_64_BIT_DEVICE_CODE:BOOL='ON' \
        -DCUDA_ARCH_NAME:STRING='Auto' \
        -DCUDA_ATTACH_VS_BUILD_RULE_TO_CUDA_FILE:BOOL='ON' \
        -DCUDA_BUILD_CUBIN:BOOL='OFF' \
        -DCUDA_BUILD_EMULATION:BOOL='OFF' \
        -DCUDA_HOST_COMPILATION_CPP:BOOL='ON' \
        -DCUDA_HOST_COMPILER:FILEPATH='/usr/bin/gcc-5' \
        -DCUDA_NVCC_EXECUTABLE:FILEPATH='/opt/cuda/bin/nvcc' \
        -DCUDA_PROPAGATE_HOST_FLAGS:BOOL='ON' \
        -DCUDA_SDK_ROOT_DIR:PATH='/opt/cuda' \
        -DCUDA_SEPARABLE_COMPILATION:BOOL='OFF' \
        -DCUDA_TOOLKIT_INCLUDE:PATH='/opt/cuda/include' \
        -DCUDA_TOOLKIT_ROOT_DIR:PATH='/opt/cuda' \
        -DCUDA_USE_STATIC_CUDA_RUNTIME:BOOL='OFF' \
        -DCUDA_VERBOSE_BUILD:BOOL='OFF' \
        -DCUDNN_INCLUDE_DIR:PATH='/opt/cuda/include' \
        -DCUDNN_ROOT_DIR:PATH='/opt/cuda' \
        \
        -DGLOO_STATIC_OR_SHARED:STRING='STATIC' \
        -DNCCL_INCLUDE_DIR:PATH='/opt/cuda/include' \
        -DNCCL_LIBRARY:FILEPATH='/opt/cuda/lib64/libnccl.so' \
        -DNCCL_ROOT_DIR:PATH='/opt/cuda' \
        \
        -DOpenCV_DIR:PATH='/usr/share/OpenCV' \
        \
        -DPYTHON_EXECUTABLE:FILEPATH='/usr/bin/python2.7' \
        -DPYTHON_INCLUDE_DIR:PATH='/usr/include/python2.7' \
        -DPYTHON_LIBRARY:FILEPATH='/usr/lib/libpython2.7.so' \
        \
        -DUSE_CNMEM:BOOL='OFF' \
        -DUSE_CUDA:BOOL='ON' \
        -DUSE_GFLAGS:BOOL='ON' \
        -DUSE_GLOG:BOOL='ON' \
        -DUSE_GLOO:BOOL='ON' \
        -DUSE_LEVELDB:BOOL='ON' \
        -DUSE_LITE_PROTO:BOOL='OFF' \
        -DUSE_LMDB:BOOL='ON' \
        -DUSE_MPI:BOOL='ON' \
        -DUSE_NCCL:BOOL='ON' \
        -DUSE_NERVANA_GPU:BOOL='ON' \
        -DUSE_NNPACK:BOOL='ON' \
        -DUSE_OPENCV:BOOL='OFF' \
        -DUSE_FFMPEG:BOOL='OFF' \
        -DUSE_OPENMP:BOOL='ON' \
        -DUSE_REDIS:BOOL='ON' \
        -DUSE_ROCKSDB:BOOL='OFF' \
        -DUSE_THREADS:BOOL='ON' \
        -DUSE_ZMQ:BOOL='ON' \
        \
        -Wno-dev \
        ..
        
    # NOTE:
    # The recommended approach of running make in build() and make install in
    # package() produces two compilations (being the second one unnecessary).
    # A workaround is to suppress make in build() and run only make install
    # in package().
    
    #make
}

package() {
    cd "${pkgname}/build"
    make DESTDIR="$pkgdir" install
    
    # directories creation
    mkdir -p "${pkgdir}/usr/lib/python2.7/site-packages"
    mkdir -p "${pkgdir}/usr/share/licenses/${pkgname}"
    
    # move/rename folders to the right location
    mv -f "${pkgdir}/usr/caffe"  "${pkgdir}/usr/lib/python2.7/site-packages"
    mv -f "${pkgdir}/usr/caffe2" "${pkgdir}/usr/lib/python2.7/site-packages"
    
    # license
    cd "${srcdir}/${pkgname}"
    install -D -m644 'LICENSE' "${pkgdir}/usr/share/licenses/${pkgname}/LICENSE"
    install -D -m644 'PATENTS' "${pkgdir}/usr/share/licenses/${pkgname}/PATENTS"
}