mirror of https://github.com/grpc/grpc.git
The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
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65 lines
2.3 KiB
65 lines
2.3 KiB
# 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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find_package(re2 QUIET CONFIG) |
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if(re2_FOUND) |
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message(STATUS "Found RE2 via CMake.") |
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return() |
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endif() |
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# As per https://github.com/grpc/grpc/issues/25434, idempotence is necessary |
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# because CMake fails when another target with the same name already exists. |
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if(TARGET re2::re2) |
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message(STATUS "Found RE2 via pkg-config already?") |
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return() |
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endif() |
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find_package(PkgConfig REQUIRED) |
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# TODO(junyer): Use the IMPORTED_TARGET option whenever CMake 3.6 (or newer) |
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# becomes the minimum required: that will take care of the add_library() and |
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# set_property() calls; then we can simply alias PkgConfig::RE2 as re2::re2. |
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# For now, we can only set INTERFACE_* properties that existed in CMake 3.5. |
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pkg_check_modules(RE2 QUIET re2) |
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if(RE2_FOUND) |
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set(re2_FOUND "${RE2_FOUND}") |
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add_library(re2::re2 INTERFACE IMPORTED) |
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if(RE2_INCLUDE_DIRS) |
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set_property(TARGET re2::re2 PROPERTY |
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INTERFACE_INCLUDE_DIRECTORIES "${RE2_INCLUDE_DIRS}") |
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endif() |
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if(RE2_CFLAGS_OTHER) |
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# Filter out the -std flag, which is handled by CMAKE_CXX_STANDARD. |
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# TODO(junyer): Use the FILTER option whenever CMake 3.6 (or newer) |
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# becomes the minimum required: that will allow this to be concise. |
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foreach(flag IN LISTS RE2_CFLAGS_OTHER) |
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if("${flag}" MATCHES "^-std=") |
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list(REMOVE_ITEM RE2_CFLAGS_OTHER "${flag}") |
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endif() |
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endforeach() |
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set_property(TARGET re2::re2 PROPERTY |
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INTERFACE_COMPILE_OPTIONS "${RE2_CFLAGS_OTHER}") |
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endif() |
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if(RE2_LDFLAGS) |
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set_property(TARGET re2::re2 PROPERTY |
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INTERFACE_LINK_LIBRARIES "${RE2_LDFLAGS}") |
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endif() |
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message(STATUS "Found RE2 via pkg-config.") |
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return() |
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endif() |
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if(re2_FIND_REQUIRED) |
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message(FATAL_ERROR "Failed to find RE2.") |
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elseif(NOT re2_FIND_QUIETLY) |
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message(WARNING "Failed to find RE2.") |
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endif()
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