1*cc02d7e2SAndroid Build Coastguard Worker# Copyright 2017 gRPC authors. 2*cc02d7e2SAndroid Build Coastguard Worker# 3*cc02d7e2SAndroid Build Coastguard Worker# Licensed under the Apache License, Version 2.0 (the "License"); 4*cc02d7e2SAndroid Build Coastguard Worker# you may not use this file except in compliance with the License. 5*cc02d7e2SAndroid Build Coastguard Worker# You may obtain a copy of the License at 6*cc02d7e2SAndroid Build Coastguard Worker# 7*cc02d7e2SAndroid Build Coastguard Worker# http://www.apache.org/licenses/LICENSE-2.0 8*cc02d7e2SAndroid Build Coastguard Worker# 9*cc02d7e2SAndroid Build Coastguard Worker# Unless required by applicable law or agreed to in writing, software 10*cc02d7e2SAndroid Build Coastguard Worker# distributed under the License is distributed on an "AS IS" BASIS, 11*cc02d7e2SAndroid Build Coastguard Worker# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12*cc02d7e2SAndroid Build Coastguard Worker# See the License for the specific language governing permissions and 13*cc02d7e2SAndroid Build Coastguard Worker# limitations under the License. 14*cc02d7e2SAndroid Build Coastguard Worker 15*cc02d7e2SAndroid Build Coastguard Worker# The CMakeLists.txt for zlib doesn't propagate include directories 16*cc02d7e2SAndroid Build Coastguard Worker# transitively so `_gRPC_ZLIB_INCLUDE_DIR` should be set for gRPC 17*cc02d7e2SAndroid Build Coastguard Worker# to find header files. 18*cc02d7e2SAndroid Build Coastguard Worker 19*cc02d7e2SAndroid Build Coastguard Workerif(gRPC_ZLIB_PROVIDER STREQUAL "module") 20*cc02d7e2SAndroid Build Coastguard Worker if(NOT ZLIB_ROOT_DIR) 21*cc02d7e2SAndroid Build Coastguard Worker set(ZLIB_ROOT_DIR ${CMAKE_CURRENT_SOURCE_DIR}/third_party/zlib) 22*cc02d7e2SAndroid Build Coastguard Worker endif() 23*cc02d7e2SAndroid Build Coastguard Worker if(EXISTS "${ZLIB_ROOT_DIR}/CMakeLists.txt") 24*cc02d7e2SAndroid Build Coastguard Worker # TODO(jtattermusch): workaround for https://github.com/madler/zlib/issues/218 25*cc02d7e2SAndroid Build Coastguard Worker include_directories("${ZLIB_ROOT_DIR}") 26*cc02d7e2SAndroid Build Coastguard Worker add_subdirectory(${ZLIB_ROOT_DIR} third_party/zlib) 27*cc02d7e2SAndroid Build Coastguard Worker 28*cc02d7e2SAndroid Build Coastguard Worker if(TARGET zlibstatic) 29*cc02d7e2SAndroid Build Coastguard Worker set(_gRPC_ZLIB_LIBRARIES zlibstatic) 30*cc02d7e2SAndroid Build Coastguard Worker set(_gRPC_ZLIB_INCLUDE_DIR "${ZLIB_ROOT_DIR}" "${CMAKE_CURRENT_BINARY_DIR}/third_party/zlib") 31*cc02d7e2SAndroid Build Coastguard Worker if(gRPC_INSTALL AND _gRPC_INSTALL_SUPPORTED_FROM_MODULE) 32*cc02d7e2SAndroid Build Coastguard Worker install(TARGETS zlibstatic EXPORT gRPCTargets 33*cc02d7e2SAndroid Build Coastguard Worker RUNTIME DESTINATION ${gRPC_INSTALL_BINDIR} 34*cc02d7e2SAndroid Build Coastguard Worker LIBRARY DESTINATION ${gRPC_INSTALL_LIBDIR} 35*cc02d7e2SAndroid Build Coastguard Worker ARCHIVE DESTINATION ${gRPC_INSTALL_LIBDIR}) 36*cc02d7e2SAndroid Build Coastguard Worker endif() 37*cc02d7e2SAndroid Build Coastguard Worker endif() 38*cc02d7e2SAndroid Build Coastguard Worker else() 39*cc02d7e2SAndroid Build Coastguard Worker message(WARNING "gRPC_ZLIB_PROVIDER is \"module\" but ZLIB_ROOT_DIR is wrong") 40*cc02d7e2SAndroid Build Coastguard Worker endif() 41*cc02d7e2SAndroid Build Coastguard Worker if(gRPC_INSTALL AND NOT _gRPC_INSTALL_SUPPORTED_FROM_MODULE) 42*cc02d7e2SAndroid Build Coastguard Worker message(WARNING "gRPC_INSTALL will be forced to FALSE because gRPC_ZLIB_PROVIDER is \"module\" and CMake version (${CMAKE_VERSION}) is less than 3.13.") 43*cc02d7e2SAndroid Build Coastguard Worker set(gRPC_INSTALL FALSE) 44*cc02d7e2SAndroid Build Coastguard Worker endif() 45*cc02d7e2SAndroid Build Coastguard Workerelseif(gRPC_ZLIB_PROVIDER STREQUAL "package") 46*cc02d7e2SAndroid Build Coastguard Worker # zlib installation directory can be configured by setting ZLIB_ROOT 47*cc02d7e2SAndroid Build Coastguard Worker # We allow locating zlib using both "CONFIG" and "MODULE" as the expectation 48*cc02d7e2SAndroid Build Coastguard Worker # is that many Linux systems will have zlib installed via a distribution 49*cc02d7e2SAndroid Build Coastguard Worker # package ("MODULE"), while on Windows the user is likely to have installed 50*cc02d7e2SAndroid Build Coastguard Worker # zlib using cmake ("CONFIG"). 51*cc02d7e2SAndroid Build Coastguard Worker # See https://cmake.org/cmake/help/v3.6/module/FindZLIB.html 52*cc02d7e2SAndroid Build Coastguard Worker find_package(ZLIB REQUIRED) 53*cc02d7e2SAndroid Build Coastguard Worker 54*cc02d7e2SAndroid Build Coastguard Worker if(TARGET ZLIB::ZLIB) 55*cc02d7e2SAndroid Build Coastguard Worker set(_gRPC_ZLIB_LIBRARIES ZLIB::ZLIB) 56*cc02d7e2SAndroid Build Coastguard Worker else() 57*cc02d7e2SAndroid Build Coastguard Worker set(_gRPC_ZLIB_LIBRARIES ${ZLIB_LIBRARIES}) 58*cc02d7e2SAndroid Build Coastguard Worker endif() 59*cc02d7e2SAndroid Build Coastguard Worker set(_gRPC_ZLIB_INCLUDE_DIR ${ZLIB_INCLUDE_DIRS}) 60*cc02d7e2SAndroid Build Coastguard Worker set(_gRPC_FIND_ZLIB "if(NOT ZLIB_FOUND)\n find_package(ZLIB)\nendif()") 61*cc02d7e2SAndroid Build Coastguard Workerendif() 62