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# Copyright 2017 The TensorFlow 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.
# ==============================================================================
include (ExternalProject)

set(GRPC_INCLUDE_DIRS ${CMAKE_CURRENT_BINARY_DIR}/grpc/src/grpc/include)
set(GRPC_URL https://github.com/grpc/grpc.git)
set(GRPC_BUILD ${CMAKE_CURRENT_BINARY_DIR}/grpc/src/grpc)
set(GRPC_TAG 3bc78cd0b5bd784a235c01612d634b1ec5f8fb97)

if(WIN32)
  set(grpc_STATIC_LIBRARIES
      ${CMAKE_CURRENT_BINARY_DIR}/grpc/src/grpc/$(Configuration)/grpc++_unsecure.lib
      ${CMAKE_CURRENT_BINARY_DIR}/grpc/src/grpc/$(Configuration)/grpc_unsecure.lib
      ${CMAKE_CURRENT_BINARY_DIR}/grpc/src/grpc/$(Configuration)/gpr.lib)
else()
  set(grpc_STATIC_LIBRARIES
      ${CMAKE_CURRENT_BINARY_DIR}/grpc/src/grpc/libgrpc++_unsecure.a
      ${CMAKE_CURRENT_BINARY_DIR}/grpc/src/grpc/libgrpc_unsecure.a
      ${CMAKE_CURRENT_BINARY_DIR}/grpc/src/grpc/libgpr.a)
endif()

ExternalProject_Add(grpc
    PREFIX grpc
    DEPENDS protobuf zlib
    GIT_REPOSITORY ${GRPC_URL}
    GIT_TAG ${GRPC_TAG}
    DOWNLOAD_DIR "${DOWNLOAD_LOCATION}"
    BUILD_IN_SOURCE 1
    PATCH_COMMAND ${CMAKE_COMMAND} -E copy_if_different ${CMAKE_CURRENT_SOURCE_DIR}/patches/grpc/CMakeLists.txt ${GRPC_BUILD}
    INSTALL_COMMAND ""
    CMAKE_CACHE_ARGS
        -DCMAKE_BUILD_TYPE:STRING=Release
        -DCMAKE_VERBOSE_MAKEFILE:BOOL=OFF
        -DPROTOBUF_INCLUDE_DIRS:STRING=${PROTOBUF_INCLUDE_DIRS}
        -DPROTOBUF_LIBRARIES:STRING=${protobuf_STATIC_LIBRARIES}
        -DZLIB_ROOT:STRING=${ZLIB_INSTALL}
)