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+# Maintainer : jerry73204 < jerry73204 at gmail dot com >
+
+# NOTE:
+# In order to build with NCCL support, uncomment the NCCL
+# lines in 'depends' and 'preprare()'.
+
+pkgname=caffe-ssd-cpu
+_srcname=caffe
+pkgver=ssdv1.0.r0.g4817bf8b
+pkgrel=1
+pkgdesc="weiliu89's caffe for CPU only"
+arch=('x86_64')
+url='https://github.com/weiliu89/caffe/tree/ssd'
+license=('BSD')
+depends=(
+    # official repositories:
+        'boost-libs' 'protobuf' 'google-glog' 'gflags' 'hdf5' 'opencv' 'leveldb'
+        'lmdb' 'python' 'boost' 'cython' 'python-numpy' 'python-scipy'
+        'python-matplotlib' 'ipython' 'python-h5py' 'python-networkx' 'python-nose'
+        'python-pandas' 'python-dateutil' 'python-protobuf' 'python-gflags'
+        'python-yaml' 'python-pillow' 'python-six'
+    # AUR:
+        # required:
+            'openblas-lapack'
+        # not required:
+            # 'nccl'
+        #python:
+            'python-leveldb' 'python-scikit-image' 'python-pydotplus'
+    # NOTE:
+    # python-pydotplus (or python-pydot) is required by python executable draw_net.py
+    # https://github.com/BVLC/caffe/blob/691febcb83d6a3147be8e9583c77aefaac9945f8/python/caffe/draw.py#L7-L22
+)
+makedepends=('git' 'gcc6' 'doxygen' 'texlive-core')
+provides=('caffe' 'caffe-ssd')
+conflicts=('caffe' 'caffe-cpu' 'caffe-cpu-git' 'caffe-dr-git' 'caffe-mnc-dr-git'
+           'caffe2' 'caffe2-git' 'caffe2-cpu' 'caffe2-cpu-git' 'caffe-git' 'caffe-ssd')
+source=("${pkgname}"::"git+https://github.com/weiliu89/caffe.git#branch=ssd" 'makefile.patch')
+sha256sums=('SKIP'
+            'b39cc3e741818d2879fe881143e890c0be023557dd4d9b7f23874cf60cfec7eb')
+
+prepare() {
+    cd "$pkgname"
+
+    # prepare to configure options in Makefile.config
+    cp -f Makefile.config.example Makefile.config
+
+    # enable cuDNN acceleration switch
+    # sed -i '/USE_CUDNN/s/^#[[:space:]]//g' Makefile.config
+
+    # use cpu only
+    sed -i '/CPU_ONLY/s/^#[[:space:]]//g' Makefile.config
+
+    # enable NCCL acceleration switch
+    # sed -i '/USE_NCCL/s/^#[[:space:]]//g' Makefile.config
+
+    # strictly enable I/O dependencies
+    sed -i '/USE_OPENCV/s/^#[[:space:]]//;/USE_OPENCV/s/0/1/'   Makefile.config
+    sed -i '/USE_LEVELDB/s/^#[[:space:]]//;/USE_LEVELDB/s/0/1/' Makefile.config
+    sed -i '/USE_LMDB/s/^#[[:space:]]//;/USE_LMDB/s/0/1/'       Makefile.config
+    sed -i '/OPENCV_VERSION/s/^#[[:space:]]//g'                 Makefile.config
+
+    # set CUDA directory
+    # sed -i '/CUDA_DIR/s/\/usr\/local\/cuda/\/opt\/cuda/' Makefile.config
+
+    # remove gpu architectures not supported by CUDA 9.0
+    sed -i 's/-gencode[[:space:]]arch=compute_20,code=sm_20//' Makefile.config
+    sed -i 's/-gencode[[:space:]]arch=compute_20,code=sm_21//' Makefile.config
+
+    # set OpenBLAS as the BLAS provider and adjust its directories
+    sed -i '/BLAS[[:space:]]\:=[[:space:]]atlas/s/atlas/open/'                                 Makefile.config
+    sed -i 's/.*BLAS_INCLUDE[[:space:]]\:=[[:space:]]\/path.*/BLAS_INCLUDE := \/usr\/include/' Makefile.config
+    sed -i 's/.*BLAS_LIB[[:space:]]\:=[[:space:]]\/path.*/BLAS_LIB := \/usr\/lib/'             Makefile.config
+
+    # python3 settings
+    _py2inc_line="$(sed -n '/PYTHON_INCLUDE[[:space:]]\:=[[:space:]]\/usr\/include\/python2\.7/='  Makefile.config)"
+    _py3inc_line="$(sed -n '/PYTHON_INCLUDE[[:space:]]\:=[[:space:]]\/usr\/include\/python3\.5m/=' Makefile.config)"
+    _py3libs_line="$(sed -n '/PYTHON_LIBRARIES/=' Makefile.config)"
+    sed -i "$((_py2inc_line))s/^/# /"  Makefile.config # comment python2 lines
+    sed -i "$((_py2inc_line+1))s/^/#/" Makefile.config
+    sed -i "$((_py3inc_line))s/^#[[:space:]]//"   Makefile.config # uncomment python3 PYTHON_INCLUDE lines
+    sed -i "$((_py3inc_line+1))s/^#//"            Makefile.config
+    sed -i "$((_py3libs_line))s/^#[[:space:]]//"  Makefile.config # uncomment PYTHON_LIBRARIES line
+    sed -i "$((_py3libs_line))s/5/7/"             Makefile.config # change version in PYTHON_LIBRARIES
+    sed -i "$((_py3inc_line))s/5/7/"              Makefile.config # change version in python3 PYTHON_INCLUDE
+    sed -i "$((_py3inc_line+1))s/5/7/;$((_py3inc_line+1))s/dist/site/" Makefile.config
+
+    # use python layers
+    sed -i '/WITH_PYTHON_LAYER/s/^#[[:space:]]//g' Makefile.config
+
+    # if you want to use python2 _instead_ of python3:
+    #     - uncomment this block
+    #     - comment the python3 block
+    #     - change python3 dependencies to python2
+    #     - change python2 directories in package() to python3
+    #     - NOTE: do not enable both python2 and python3 blocks. choose only one.
+    #     - NOTE: python2 is the Caffe default but this package uses python3 by default
+    # python2 settings
+    #_py2inc_line="$(sed -n '/PYTHON_INCLUDE[[:space:]]\:=[[:space:]]\/usr\/include\/python2\.7/=' Makefile.config)"
+    #sed -i "$((_py2inc_line+1))s/dist/site/" Makefile.config
+
+    # patch Makefile
+    patch -Np1 -i $srcdir/makefile.patch
+}
+
+pkgver() {
+    cd "$pkgname"
+
+    # git, tags available
+    git describe --long --tags | sed 's/\([^-]*-g\)/r\1/;s/-/./g'
+}
+
+build() {
+    cd "$pkgname"
+
+    msg2 "Building target 'all'..."
+    make all
+
+    msg2 "Building target 'pycaffe'..."
+    make pycaffe
+
+    msg2 "Building target 'docs'..."
+    rm -rf doxygen
+    make docs
+
+    msg2 "Building target 'distribute'..."
+    make distribute
+}
+
+# uncomment this block if you want to run the checks/tests
+#check() {
+#    cd "$pkgname"
+#    msg2 "Building target 'test'..."
+#    make test
+#    msg2 "Making target 'runtest'..."
+#    make runtest
+#}
+
+package() {
+    # directories creation
+    mkdir -p "${pkgdir}/usr/bin"
+    mkdir -p "${pkgdir}/usr/include/caffe/"{layers,proto,test,util}
+    mkdir -p "${pkgdir}/usr/lib/python3.7/site-packages/caffe/"{imagenet,proto,test}
+    mkdir -p "${pkgdir}/usr/share/"{caffe,doc/"${_srcname}"/search,licenses/"${pkgname}"}
+
+    # binaries
+    cd "${pkgname}/distribute/bin"
+    install -D -m755 * "${pkgdir}/usr/bin"
+
+    # libraries
+    cd "${srcdir}/${pkgname}/distribute/lib"
+    install -D -m755 *.so "${pkgdir}/usr/lib"
+
+    # includes
+    cd "${srcdir}/${pkgname}/distribute/include/caffe"
+    install -D -m644 *.hpp "${pkgdir}/usr/include/caffe"
+    for _dir in layers proto test util
+    do
+        cd "${srcdir}/${pkgname}/distribute/include/caffe/${_dir}"
+        install -D -m644 * "${pkgdir}/usr/include/caffe/${_dir}"
+    done
+
+    # python
+    cd "${srcdir}/${pkgname}/distribute/python"
+    install -D -m755 *.py "${pkgdir}/usr/bin"
+    rm -rf python # remove duplicated 'python' folder
+
+    cd caffe
+    for _file in *
+    do
+        [ -d "$_file" ] && continue # skip directories
+        _mode="$(stat --format '%a' "$_file")"
+        install -D -m"$_mode" "$_file" "${pkgdir}/usr/lib/python3.7/site-packages/caffe"
+    done
+
+    for _dir in imagenet proto test
+    do
+        cd "${srcdir}/${pkgname}/distribute/python/caffe/${_dir}"
+        for _file in *
+        do
+            _mode="$(stat --format '%a' "$_file")"
+            install -D -m"$_mode" "$_file" "${pkgdir}/usr/lib/python3.7/site-packages/caffe/${_dir}"
+        done
+    done
+
+    # proto
+    cd "${srcdir}/${pkgname}/distribute/proto"
+    install -D -m644 * "${pkgdir}/usr/share/caffe"
+
+    # docs
+    cd "${srcdir}/${pkgname}/doxygen/html"
+    for _file in *
+    do
+        [ -d "$_file" ] && continue # skip directories
+        install -D -m644 "$_file" "${pkgdir}/usr/share/doc/${_srcname}"
+    done
+    cd search
+    install -D -m644 * "${pkgdir}/usr/share/doc/${_srcname}/search"
+
+    # license
+    cd "${srcdir}/${pkgname}"
+    install -D -m644 LICENSE "${pkgdir}/usr/share/licenses/${pkgname}"
+}