| # Copyright 2017 gRPC authors. |
| # |
| # Licensed 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. |
| |
| find_package(re2 QUIET CONFIG) |
| if(re2_FOUND) |
| message(STATUS "Found RE2 via CMake.") |
| return() |
| endif() |
| |
| find_package(PkgConfig REQUIRED) |
| # TODO(junyer): Use the IMPORTED_TARGET option whenever CMake 3.6 (or newer) |
| # becomes the minimum required: that will take care of the add_library() and |
| # set_property() calls; then we can simply alias PkgConfig::RE2 as re2::re2. |
| # For now, we can only set INTERFACE_* properties that existed in CMake 3.5. |
| pkg_check_modules(RE2 QUIET re2) |
| if(RE2_FOUND) |
| set(re2_FOUND "${RE2_FOUND}") |
| add_library(re2::re2 INTERFACE IMPORTED) |
| if(RE2_INCLUDE_DIRS) |
| set_property(TARGET re2::re2 PROPERTY |
| INTERFACE_INCLUDE_DIRECTORIES "${RE2_INCLUDE_DIRS}") |
| endif() |
| if(RE2_CFLAGS_OTHER) |
| # Filter out the -std flag, which is handled by CMAKE_CXX_STANDARD. |
| # TODO(junyer): Use the FILTER option whenever CMake 3.6 (or newer) |
| # becomes the minimum required: that will allow this to be concise. |
| foreach(flag IN LISTS RE2_CFLAGS_OTHER) |
| if("${flag}" MATCHES "^-std=") |
| list(REMOVE_ITEM RE2_CFLAGS_OTHER "${flag}") |
| endif() |
| endforeach() |
| set_property(TARGET re2::re2 PROPERTY |
| INTERFACE_COMPILE_OPTIONS "${RE2_CFLAGS_OTHER}") |
| endif() |
| if(RE2_LDFLAGS) |
| set_property(TARGET re2::re2 PROPERTY |
| INTERFACE_LINK_LIBRARIES "${RE2_LDFLAGS}") |
| endif() |
| message(STATUS "Found RE2 via pkg-config.") |
| return() |
| endif() |
| |
| if(re2_FIND_REQUIRED) |
| message(FATAL_ERROR "Failed to find RE2.") |
| elseif(NOT re2_FIND_QUIETLY) |
| message(WARNING "Failed to find RE2.") |
| endif() |