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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(nsync_INCLUDE_DIR ${CMAKE_CURRENT_BINARY_DIR}/external/nsync/public)
set(nsync_URL https://github.com/google/nsync)
set(nsync_TAG 1.20.1)
set(nsync_BUILD ${CMAKE_CURRENT_BINARY_DIR}/nsync/src/nsync)
set(nsync_INSTALL ${CMAKE_CURRENT_BINARY_DIR}/nsync/install)
if(WIN32)
set(nsync_HEADERS "${nsync_BUILD}/public/*.h")
set(nsync_STATIC_LIBRARIES ${nsync_INSTALL}/lib/nsync_cpp.lib)
else()
set(nsync_HEADERS "${nsync_BUILD}/public/*.h")
set(nsync_STATIC_LIBRARIES ${nsync_INSTALL}/lib/libnsync_cpp.a)
endif()
ExternalProject_Add(nsync
PREFIX nsync
GIT_REPOSITORY ${nsync_URL}
GIT_TAG ${nsync_TAG}
DOWNLOAD_DIR "${DOWNLOAD_LOCATION}"
BUILD_IN_SOURCE 1
BUILD_BYPRODUCTS ${nsync_STATIC_LIBRARIES}
INSTALL_DIR ${nsync_INSTALL}
CMAKE_CACHE_ARGS
-DCMAKE_BUILD_TYPE:STRING=Release
-DCMAKE_VERBOSE_MAKEFILE:BOOL=OFF
-DCMAKE_INSTALL_PREFIX:STRING=${nsync_INSTALL}
-DCMAKE_INSTALL_LIBDIR:STRING=lib
-DNSYNC_LANGUAGE:STRING=c++11)
set(nsync_HEADERS
"${nsync_INSTALL}/include/nsync.h"
"${nsync_INSTALL}/include/nsync_atomic.h"
"${nsync_INSTALL}/include/nsync_counter.h"
"${nsync_INSTALL}/include/nsync_cpp.h"
"${nsync_INSTALL}/include/nsync_cv.h"
"${nsync_INSTALL}/include/nsync_debug.h"
"${nsync_INSTALL}/include/nsync_mu.h"
"${nsync_INSTALL}/include/nsync_mu_wait.h"
"${nsync_INSTALL}/include/nsync_note.h"
"${nsync_INSTALL}/include/nsync_once.h"
"${nsync_INSTALL}/include/nsync_time.h"
"${nsync_INSTALL}/include/nsync_time_internal.h"
"${nsync_INSTALL}/include/nsync_waiter.h"
)
# put nsync includes in the directory where they are expected
add_custom_target(nsync_create_destination_dir
COMMAND ${CMAKE_COMMAND} -E make_directory ${nsync_INCLUDE_DIR}
DEPENDS nsync)
add_custom_target(nsync_copy_headers_to_destination
DEPENDS nsync_create_destination_dir)
foreach(header_file ${nsync_HEADERS})
add_custom_command(TARGET nsync_copy_headers_to_destination PRE_BUILD
COMMAND ${CMAKE_COMMAND} -E copy_if_different ${header_file} ${nsync_INCLUDE_DIR}/)
endforeach()
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