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 Workerfind_package(re2 QUIET CONFIG) 16*cc02d7e2SAndroid Build Coastguard Workerif(re2_FOUND) 17*cc02d7e2SAndroid Build Coastguard Worker message(STATUS "Found RE2 via CMake.") 18*cc02d7e2SAndroid Build Coastguard Worker return() 19*cc02d7e2SAndroid Build Coastguard Workerendif() 20*cc02d7e2SAndroid Build Coastguard Worker 21*cc02d7e2SAndroid Build Coastguard Worker# As per https://github.com/grpc/grpc/issues/25434, idempotence is necessary 22*cc02d7e2SAndroid Build Coastguard Worker# because CMake fails when another target with the same name already exists. 23*cc02d7e2SAndroid Build Coastguard Workerif(TARGET re2::re2) 24*cc02d7e2SAndroid Build Coastguard Worker message(STATUS "Found RE2 via pkg-config already?") 25*cc02d7e2SAndroid Build Coastguard Worker return() 26*cc02d7e2SAndroid Build Coastguard Workerendif() 27*cc02d7e2SAndroid Build Coastguard Worker 28*cc02d7e2SAndroid Build Coastguard Workerfind_package(PkgConfig REQUIRED) 29*cc02d7e2SAndroid Build Coastguard Worker# TODO(junyer): Use the IMPORTED_TARGET option whenever CMake 3.6 (or newer) 30*cc02d7e2SAndroid Build Coastguard Worker# becomes the minimum required: that will take care of the add_library() and 31*cc02d7e2SAndroid Build Coastguard Worker# set_property() calls; then we can simply alias PkgConfig::RE2 as re2::re2. 32*cc02d7e2SAndroid Build Coastguard Worker# For now, we can only set INTERFACE_* properties that existed in CMake 3.5. 33*cc02d7e2SAndroid Build Coastguard Workerpkg_check_modules(RE2 QUIET re2) 34*cc02d7e2SAndroid Build Coastguard Workerif(RE2_FOUND) 35*cc02d7e2SAndroid Build Coastguard Worker set(re2_FOUND "${RE2_FOUND}") 36*cc02d7e2SAndroid Build Coastguard Worker add_library(re2::re2 INTERFACE IMPORTED) 37*cc02d7e2SAndroid Build Coastguard Worker if(RE2_INCLUDE_DIRS) 38*cc02d7e2SAndroid Build Coastguard Worker set_property(TARGET re2::re2 PROPERTY 39*cc02d7e2SAndroid Build Coastguard Worker INTERFACE_INCLUDE_DIRECTORIES "${RE2_INCLUDE_DIRS}") 40*cc02d7e2SAndroid Build Coastguard Worker endif() 41*cc02d7e2SAndroid Build Coastguard Worker if(RE2_CFLAGS_OTHER) 42*cc02d7e2SAndroid Build Coastguard Worker # Filter out the -std flag, which is handled by CMAKE_CXX_STANDARD. 43*cc02d7e2SAndroid Build Coastguard Worker # TODO(junyer): Use the FILTER option whenever CMake 3.6 (or newer) 44*cc02d7e2SAndroid Build Coastguard Worker # becomes the minimum required: that will allow this to be concise. 45*cc02d7e2SAndroid Build Coastguard Worker foreach(flag IN LISTS RE2_CFLAGS_OTHER) 46*cc02d7e2SAndroid Build Coastguard Worker if("${flag}" MATCHES "^-std=") 47*cc02d7e2SAndroid Build Coastguard Worker list(REMOVE_ITEM RE2_CFLAGS_OTHER "${flag}") 48*cc02d7e2SAndroid Build Coastguard Worker endif() 49*cc02d7e2SAndroid Build Coastguard Worker endforeach() 50*cc02d7e2SAndroid Build Coastguard Worker set_property(TARGET re2::re2 PROPERTY 51*cc02d7e2SAndroid Build Coastguard Worker INTERFACE_COMPILE_OPTIONS "${RE2_CFLAGS_OTHER}") 52*cc02d7e2SAndroid Build Coastguard Worker endif() 53*cc02d7e2SAndroid Build Coastguard Worker if(RE2_LDFLAGS) 54*cc02d7e2SAndroid Build Coastguard Worker set_property(TARGET re2::re2 PROPERTY 55*cc02d7e2SAndroid Build Coastguard Worker INTERFACE_LINK_LIBRARIES "${RE2_LDFLAGS}") 56*cc02d7e2SAndroid Build Coastguard Worker endif() 57*cc02d7e2SAndroid Build Coastguard Worker message(STATUS "Found RE2 via pkg-config.") 58*cc02d7e2SAndroid Build Coastguard Worker return() 59*cc02d7e2SAndroid Build Coastguard Workerendif() 60*cc02d7e2SAndroid Build Coastguard Worker 61*cc02d7e2SAndroid Build Coastguard Workerif(re2_FIND_REQUIRED) 62*cc02d7e2SAndroid Build Coastguard Worker message(FATAL_ERROR "Failed to find RE2.") 63*cc02d7e2SAndroid Build Coastguard Workerelseif(NOT re2_FIND_QUIETLY) 64*cc02d7e2SAndroid Build Coastguard Worker message(WARNING "Failed to find RE2.") 65*cc02d7e2SAndroid Build Coastguard Workerendif() 66