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# 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.
if("${gRPC_PROTOBUF_PROVIDER}" STREQUAL "module")
# Building the protobuf tests require gmock what is not part of a standard protobuf checkout.
# Disable them unless they are explicitly requested from the cmake command line (when we assume
# gmock is downloaded to the right location inside protobuf).
if(NOT protobuf_BUILD_TESTS)
set(protobuf_BUILD_TESTS OFF CACHE BOOL "Build protobuf tests")
endif()
# Disable building protobuf with zlib. Building protobuf with zlib breaks
# the build if zlib is not installed on the system.
if(NOT protobuf_WITH_ZLIB)
set(protobuf_WITH_ZLIB OFF CACHE BOOL "Build protobuf with zlib.")
endif()
if(NOT PROTOBUF_ROOT_DIR)
set(PROTOBUF_ROOT_DIR ${CMAKE_CURRENT_SOURCE_DIR}/third_party/protobuf)
endif()
if(EXISTS "${PROTOBUF_ROOT_DIR}/cmake/CMakeLists.txt")
set(protobuf_MSVC_STATIC_RUNTIME OFF CACHE BOOL "Link static runtime libraries")
add_subdirectory(${PROTOBUF_ROOT_DIR}/cmake third_party/protobuf)
if(TARGET ${_gRPC_PROTOBUF_LIBRARY_NAME})
set(_gRPC_PROTOBUF_LIBRARIES ${_gRPC_PROTOBUF_LIBRARY_NAME})
endif()
if(TARGET libprotoc)
set(_gRPC_PROTOBUF_PROTOC_LIBRARIES libprotoc)
endif()
if(TARGET protoc)
set(_gRPC_PROTOBUF_PROTOC protoc)
set(_gRPC_PROTOBUF_PROTOC_EXECUTABLE $<TARGET_FILE:protoc>)
endif()
set(_gRPC_PROTOBUF_INCLUDE_DIR "${PROTOBUF_ROOT_DIR}")
# For well-known .proto files distributed with protobuf
set(_gRPC_PROTOBUF_WELLKNOWN_INCLUDE_DIR "${PROTOBUF_ROOT_DIR}/src")
else()
message(WARNING "gRPC_PROTOBUF_PROVIDER is \"module\" but PROTOBUF_ROOT_DIR is wrong")
endif()
if(gRPC_INSTALL)
message(WARNING "gRPC_INSTALL will be forced to FALSE because gRPC_PROTOBUF_PROVIDER is \"module\"")
set(gRPC_INSTALL FALSE)
endif()
elseif("${gRPC_PROTOBUF_PROVIDER}" STREQUAL "package")
find_package(Protobuf REQUIRED ${gRPC_PROTOBUF_PACKAGE_TYPE})
# {Protobuf,PROTOBUF}_FOUND is defined based on find_package type ("MODULE" vs "CONFIG").
# For "MODULE", the case has also changed between cmake 3.5 and 3.6.
# We use the legacy uppercase version for *_LIBRARIES AND *_INCLUDE_DIRS variables
# as newer cmake versions provide them too for backward compatibility.
if(Protobuf_FOUND OR PROTOBUF_FOUND)
if(TARGET protobuf::${_gRPC_PROTOBUF_LIBRARY_NAME})
set(_gRPC_PROTOBUF_LIBRARIES protobuf::${_gRPC_PROTOBUF_LIBRARY_NAME})
else()
set(_gRPC_PROTOBUF_LIBRARIES ${PROTOBUF_LIBRARIES})
endif()
if(TARGET protobuf::libprotoc)
set(_gRPC_PROTOBUF_PROTOC_LIBRARIES protobuf::libprotoc)
# extract the include dir from target's properties
get_target_property(_gRPC_PROTOBUF_WELLKNOWN_INCLUDE_DIR protobuf::libprotoc INTERFACE_INCLUDE_DIRECTORIES)
else()
set(_gRPC_PROTOBUF_PROTOC_LIBRARIES ${PROTOBUF_PROTOC_LIBRARIES})
set(_gRPC_PROTOBUF_WELLKNOWN_INCLUDE_DIR ${PROTOBUF_INCLUDE_DIRS})
endif()
if(TARGET protobuf::protoc)
set(_gRPC_PROTOBUF_PROTOC protobuf::protoc)
set(_gRPC_PROTOBUF_PROTOC_EXECUTABLE $<TARGET_FILE:protobuf::protoc>)
else()
set(_gRPC_PROTOBUF_PROTOC ${PROTOBUF_PROTOC_EXECUTABLE})
set(_gRPC_PROTOBUF_PROTOC_EXECUTABLE ${PROTOBUF_PROTOC_EXECUTABLE})
endif()
set(_gRPC_PROTOBUF_INCLUDE_DIR ${PROTOBUF_INCLUDE_DIRS})
set(_gRPC_FIND_PROTOBUF "if(NOT Protobuf_FOUND AND NOT PROTOBUF_FOUND)\n find_package(Protobuf ${gRPC_PROTOBUF_PACKAGE_TYPE})\nendif()")
endif()
endif()
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