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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(zlib_INCLUDE_DIR ${CMAKE_CURRENT_BINARY_DIR}/external/zlib_archive)
set(ZLIB_URL https://github.com/madler/zlib)
set(ZLIB_BUILD ${CMAKE_CURRENT_BINARY_DIR}/zlib/src/zlib)
set(ZLIB_INSTALL ${CMAKE_CURRENT_BINARY_DIR}/zlib/install)
set(ZLIB_TAG 50893291621658f355bc5b4d450a8d06a563053d)
if(WIN32)
set(zlib_STATIC_LIBRARIES
debug ${CMAKE_CURRENT_BINARY_DIR}/zlib/install/lib/zlibstaticd.lib
optimized ${CMAKE_CURRENT_BINARY_DIR}/zlib/install/lib/zlibstatic.lib)
else()
set(zlib_STATIC_LIBRARIES
${CMAKE_CURRENT_BINARY_DIR}/zlib/install/lib/libz.a)
endif()
set(ZLIB_HEADERS
"${ZLIB_INSTALL}/include/zconf.h"
"${ZLIB_INSTALL}/include/zlib.h"
)
ExternalProject_Add(zlib
PREFIX zlib
GIT_REPOSITORY ${ZLIB_URL}
GIT_TAG ${ZLIB_TAG}
INSTALL_DIR ${ZLIB_INSTALL}
BUILD_IN_SOURCE 1
DOWNLOAD_DIR "${DOWNLOAD_LOCATION}"
CMAKE_CACHE_ARGS
if(tensorflow_ENABLE_POSITION_INDEPENDENT_CODE)
-DCMAKE_POSITION_INDEPENDENT_CODE:BOOL=ON
else()
-DCMAKE_POSITION_INDEPENDENT_CODE:BOOL=OFF
endif()
-DCMAKE_BUILD_TYPE:STRING=Release
-DCMAKE_INSTALL_PREFIX:STRING=${ZLIB_INSTALL}
)
# put zlib includes in the directory where they are expected
add_custom_target(zlib_create_destination_dir
COMMAND ${CMAKE_COMMAND} -E make_directory ${zlib_INCLUDE_DIR}
DEPENDS zlib)
add_custom_target(zlib_copy_headers_to_destination
DEPENDS zlib_create_destination_dir)
foreach(header_file ${ZLIB_HEADERS})
add_custom_command(TARGET zlib_copy_headers_to_destination PRE_BUILD
COMMAND ${CMAKE_COMMAND} -E copy_if_different ${header_file} ${zlib_INCLUDE_DIR})
endforeach()
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