1 # Copyright 2017 gRPC authors.
3 # Licensed under the Apache License, Version 2.0 (the "License");
4 # you may not use this file except in compliance with the License.
5 # You may obtain a copy of the License at
7 # http://www.apache.org/licenses/LICENSE-2.0
9 # Unless required by applicable law or agreed to in writing, software
10 # distributed under the License is distributed on an "AS IS" BASIS,
11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 # See the License for the specific language governing permissions and
13 # limitations under the License.
15 if(gRPC_GFLAGS_PROVIDER STREQUAL "module")
16 if(NOT GFLAGS_ROOT_DIR)
17 set(GFLAGS_ROOT_DIR ${CMAKE_CURRENT_SOURCE_DIR}/third_party/gflags)
19 if(EXISTS "${GFLAGS_ROOT_DIR}/CMakeLists.txt")
20 add_subdirectory(${GFLAGS_ROOT_DIR} third_party/gflags)
21 set(_gRPC_GFLAGS_LIBRARIES gflags::gflags)
23 message(WARNING "gRPC_GFLAGS_PROVIDER is \"module\" but GFLAGS_ROOT_DIR is wrong")
25 elseif(gRPC_GFLAGS_PROVIDER STREQUAL "package")
26 # Use "CONFIG" as there is no built-in cmake module for gflags.
27 find_package(gflags REQUIRED CONFIG)
28 if(TARGET gflags::gflags)
29 set(_gRPC_GFLAGS_LIBRARIES gflags::gflags)
31 set(_gRPC_FIND_GFLAGS "if(NOT gflags_FOUND)\n find_package(gflags CONFIG)\nendif()")
32 elseif(gRPC_GFLAGS_PROVIDER STREQUAL "none")
33 # gflags is a test-only dependency and can be avoided if we're not building tests.