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ARROW-12326: [C++] Avoid needless c-ares detection#9977
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,71 @@ | ||
| # Licensed to the Apache Software Foundation (ASF) under one | ||
| # or more contributor license agreements. See the NOTICE file | ||
| # distributed with this work for additional information | ||
| # 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, | ||
| # 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. | ||
| set(find_package_args) | ||
| if(c-aresAlt_FIND_VERSION) | ||
| list(APPEND find_package_args ${c-aresAlt_FIND_VERSION}) | ||
| endif() | ||
| if(c-aresAlt_FIND_QUIETLY) | ||
| list(APPEND find_package_args QUIET) | ||
| endif() | ||
| find_package(c-ares ${find_package_args}) | ||
| if(c-ares_FOUND) | ||
| set(c-aresAlt_FOUND TRUE) | ||
| return() | ||
| endif() | ||
| find_package(PkgConfig QUIET) | ||
| pkg_check_modules(c-ares_PC libcares) | ||
| if(c-ares_PC_FOUND) | ||
| set(c-ares_INCLUDE_DIR "${c-ares_PC_INCLUDEDIR}") | ||
| list(APPEND c-ares_PC_LIBRARY_DIRS "${c-ares_PC_LIBDIR}") | ||
| find_library(c-ares_LIB cares | ||
| PATHS ${c-ares_PC_LIBRARY_DIRS} | ||
| PATH_SUFFIXES ${ARROW_LIBRARY_PATH_SUFFIXES} | ||
| NO_DEFAULT_PATH) | ||
| elseif(c-ares_ROOT) | ||
| find_library(c-ares_LIB | ||
| NAMES cares | ||
| "${CMAKE_SHARED_LIBRARY_PREFIX}cares${CMAKE_SHARED_LIBRARY_SUFFIX}" | ||
| PATHS ${c-ares_ROOT} | ||
| PATH_SUFFIXES ${ARROW_LIBRARY_PATH_SUFFIXES} | ||
| NO_DEFAULT_PATH) | ||
| find_path(c-ares_INCLUDE_DIR | ||
| NAMES ares.h | ||
| PATHS ${c-ares_ROOT} | ||
| NO_DEFAULT_PATH | ||
| PATH_SUFFIXES ${ARROW_INCLUDE_PATH_SUFFIXES}) | ||
| else() | ||
| find_library(c-ares_LIB | ||
| NAMES cares | ||
| "${CMAKE_SHARED_LIBRARY_PREFIX}cares${CMAKE_SHARED_LIBRARY_SUFFIX}" | ||
| PATH_SUFFIXES ${ARROW_LIBRARY_PATH_SUFFIXES}) | ||
| find_path(c-ares_INCLUDE_DIR NAMES ares.h PATH_SUFFIXES ${ARROW_INCLUDE_PATH_SUFFIXES}) | ||
| endif() | ||
| find_package_handle_standard_args(c-aresAlt REQUIRED_VARS c-ares_LIB c-ares_INCLUDE_DIR) | ||
| if(c-aresAlt_FOUND) | ||
| if(NOT TARGET c-ares::cares) | ||
| add_library(c-ares::cares UNKNOWN IMPORTED) | ||
| set_target_properties( | ||
| c-ares::cares | ||
| PROPERTIES IMPORTED_LOCATION "${c-ares_LIB}" INTERFACE_INCLUDE_DIRECTORIES | ||
| "${c-ares_INCLUDE_DIR}") | ||
| endif() | ||
| endif() |
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Should there be an assertion here to check that the required libraries are in
GRPCPP_PC_STATIC_LIBRARIESbefore iterating over them?There was a problem hiding this comment.
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I don't think that we need it.
Because we already check
GRPCC_PC_FOUND. We can assume thatpkg_check_modules()setsGRPCPP_PC_*andGRPCPP_PC_STATIC_*variables.(I don't think that it can be occurred but) If
GRPCPP_PC_STATIC_LIBRARIESis empty, the followinglist(GET GRPCPP_LINK_LIBRARIES 0 GRPCPP_IMPORTED_LOCATION)is failed. So we can detect invalid value eventually.