| # Copyright 2019 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. |
| |
| if(gRPC_ABSL_PROVIDER STREQUAL "module") |
| if(NOT ABSL_ROOT_DIR) |
| set(ABSL_ROOT_DIR ${CMAKE_CURRENT_SOURCE_DIR}/third_party/abseil-cpp) |
| endif() |
| if(EXISTS "${ABSL_ROOT_DIR}/CMakeLists.txt") |
| if(gRPC_INSTALL) |
| # When gRPC_INSTALL is enabled and Abseil will be built as a module, |
| # Abseil will be installed along with gRPC for convenience. |
| set(ABSL_ENABLE_INSTALL ON) |
| endif() |
| add_subdirectory(${ABSL_ROOT_DIR} third_party/abseil-cpp) |
| else() |
| message(WARNING "gRPC_ABSL_PROVIDER is \"module\" but ABSL_ROOT_DIR is wrong") |
| endif() |
| if(gRPC_INSTALL AND NOT _gRPC_INSTALL_SUPPORTED_FROM_MODULE) |
| message(WARNING "gRPC_INSTALL will be forced to FALSE because gRPC_ABSL_PROVIDER is \"module\" and CMake version (${CMAKE_VERSION}) is less than 3.13.") |
| set(gRPC_INSTALL FALSE) |
| endif() |
| elseif(gRPC_ABSL_PROVIDER STREQUAL "package") |
| # Use "CONFIG" as there is no built-in cmake module for absl. |
| find_package(absl REQUIRED CONFIG) |
| endif() |
| set(_gRPC_FIND_ABSL "if(NOT TARGET absl::strings)\n find_package(absl CONFIG)\nendif()") |