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# regarding copyright ownership.  The ASF licenses this file
# to you 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,
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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"""Load Lib for C++ TOPI ops and schedules"""
import sys
import os
import ctypes
import tvm._ffi

from tvm._ffi import libinfo

def _get_lib_names():
    if sys.platform.startswith('win32'):
        return ['libtvm_topi.dll', 'tvm_topi.dll']
    if sys.platform.startswith('darwin'):
        return ['libtvm_topi.dylib', 'tvm_topi.dylib']
    return ['libtvm_topi.so', 'tvm_topi.so']

def _load_lib():
    """Load libary by searching possible path."""
    curr_path = os.path.dirname(os.path.realpath(os.path.expanduser(__file__)))
    lib_search = [curr_path, os.path.dirname(curr_path)]
    lib_path = libinfo.find_lib_path(_get_lib_names(), lib_search, optional=True)
    if lib_path is None:
        return None, None
    lib = ctypes.CDLL(lib_path[0], ctypes.RTLD_GLOBAL)
    return lib, os.path.basename(lib_path[0])

_LIB, _LIB_NAME = _load_lib()

tvm._ffi._init_api("topi", "topi.cpp")
