# Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import os
import site

from setuptools import Extension, setup
from setuptools.command.build_ext import build_ext


# refer: https://note.qidong.name/2018/03/setup-warning-strict-prototypes
# Avoid a gcc warning below:
# cc1plus: warning: command line option ‘-Wstrict-prototypes’ is valid
# for C/ObjC but not for C++
class BuildExt(build_ext):
    def build_extensions(self):
        if '-Wstrict-prototypes' in self.compiler.compiler_so:
            self.compiler.compiler_so.remove('-Wstrict-prototypes')
        super().build_extensions()


# cc flags
paddle_extra_compile_args = [
    '-std=c++14',
    '-shared',
    '-fPIC',
    '-Wno-parentheses',
    '-DPADDLE_WITH_CUSTOM_KERNEL',
]

# include path
site_packages_path = site.getsitepackages()
paddle_custom_kernel_include = [
    os.path.join(path, 'paddle', 'include') for path in site_packages_path
]

# include path third_party
compile_third_party_path = os.path.join(
    os.environ['PADDLE_BINARY_DIR'], 'third_party'
)
paddle_custom_kernel_include += [
    os.path.join(compile_third_party_path, 'install/gflags/include'),  # gflags
    os.path.join(compile_third_party_path, 'install/glog/include'),  # glog
]

# libs path
paddle_custom_kernel_library_dir = [
    os.path.join(path, 'paddle', 'fluid') for path in site_packages_path
]

# libs
libs = [':libpaddle.so']

custom_kernel_dot_module = Extension(
    'custom_kernel_dot',
    sources=['custom_kernel_dot.cc'],
    include_dirs=paddle_custom_kernel_include,
    library_dirs=paddle_custom_kernel_library_dir,
    libraries=libs,
    extra_compile_args=paddle_extra_compile_args,
)

setup(
    name='custom_kernel_dot',
    version='1.0',
    description='custom kernel fot compiling',
    cmdclass={'build_ext': BuildExt},
    ext_modules=[custom_kernel_dot_module],
)
