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# Copyright 2017 gRPC authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# The CMakeLists.txt for re2 doesn't propagate include directories
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# transitively so `_gRPC_RE2_INCLUDE_DIR` should be set for gRPC
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# to find header files.
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if(gRPC_RE2_PROVIDER STREQUAL "module")
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if(NOT RE2_ROOT_DIR)
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set(RE2_ROOT_DIR ${CMAKE_CURRENT_SOURCE_DIR}/third_party/re2)
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endif()
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if(EXISTS "${RE2_ROOT_DIR}/CMakeLists.txt")
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# Explicitly disable BUILD_TESTING to avoid re2's CMakeLists.txt triggering https://github.com/grpc/grpc/issues/23586
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option(BUILD_TESTING "re2.cmake explicitly disabled CTest's BUILD_TESTING option." OFF)
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include_directories("${RE2_ROOT_DIR}")
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add_subdirectory(${RE2_ROOT_DIR} third_party/re2)
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if(TARGET re2)
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set(_gRPC_RE2_LIBRARIES re2)
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set(_gRPC_RE2_INCLUDE_DIR "${RE2_ROOT_DIR}" "${CMAKE_CURRENT_BINARY_DIR}/third_party/re2")
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if(gRPC_INSTALL AND _gRPC_INSTALL_SUPPORTED_FROM_MODULE)
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install(TARGETS re2 EXPORT gRPCTargets
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RUNTIME DESTINATION ${gRPC_INSTALL_BINDIR}
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LIBRARY DESTINATION ${gRPC_INSTALL_LIBDIR}
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ARCHIVE DESTINATION ${gRPC_INSTALL_LIBDIR})
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endif()
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endif()
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else()
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message(WARNING "gRPC_RE2_PROVIDER is \"module\" but RE2_ROOT_DIR(${RE2_ROOT_DIR}) is wrong")
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endif()
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if(gRPC_INSTALL AND NOT _gRPC_INSTALL_SUPPORTED_FROM_MODULE)
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message(WARNING "gRPC_INSTALL will be forced to FALSE because gRPC_RE2_PROVIDER is \"module\" and CMake version (${CMAKE_VERSION}) is less than 3.13.")
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set(gRPC_INSTALL FALSE)
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endif()
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elseif(gRPC_RE2_PROVIDER STREQUAL "package")
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find_package(re2 REQUIRED)
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if(TARGET re2::re2)
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set(_gRPC_RE2_LIBRARIES re2::re2)
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endif()
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set(_gRPC_FIND_RE2 "if(NOT re2_FOUND)\n find_package(re2)\nendif()")
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endif()
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