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# Copyright 2018 Google
#
# 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.
include(ExternalProject)
include(ExternalProjectFlags)
if(GRPC_ROOT)
# If the user has supplied a GRPC_ROOT then just use it. Add an empty custom
# target so that the superbuild dependencies still work.
add_custom_target(grpc)
else()
set(
GIT_SUBMODULES
third_party/boringssl
third_party/cares/cares
)
set(
CMAKE_ARGS
-DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
-DBUILD_SHARED_LIBS:BOOL=OFF
-DgRPC_BUILD_TESTS:BOOL=OFF
# TODO(rsgowman): We're currently building nanopb twice; once via grpc, and
# once via nanopb. The version from grpc is the one that actually ends up
# being used. We need to fix this such that either:
# a) we instruct grpc to use our nanopb
# b) we rely on grpc's nanopb instead of using our own.
# For now, we'll pass in the necessary nanopb cflags into grpc. (We require
# 16 bit fields. Without explicitly requesting this, nanopb uses 8 bit
# fields.)
-DCMAKE_C_FLAGS=-DPB_FIELD_16BIT
-DCMAKE_CXX_FLAGS=-DPB_FIELD_16BIT
)
## protobuf
# Unlike other dependencies of gRPC, we control the protobuf version because we
# have checked-in protoc outputs that must match the runtime.
# The location where protobuf-config.cmake will be installed varies by platform
if (WIN32)
set(PROTOBUF_CMAKE_DIR "${FIREBASE_INSTALL_DIR}/cmake")
else()
set(PROTOBUF_CMAKE_DIR "${FIREBASE_INSTALL_DIR}/lib/cmake/protobuf")
endif()
list(
APPEND CMAKE_ARGS
-DgRPC_PROTOBUF_PROVIDER:STRING=package
-DgRPC_PROTOBUF_PACKAGE_TYPE:STRING=CONFIG
-DProtobuf_DIR:PATH=${PROTOBUF_CMAKE_DIR}
)
## zlib
# cmake/external/zlib.cmake figures out whether or not to build zlib. Either
# way, from the gRPC build's point of view it's a package.
list(
APPEND CMAKE_ARGS
-DgRPC_ZLIB_PROVIDER:STRING=package
)
if(ZLIB_FOUND)
# Propagate possible user configuration to FindZLIB.cmake in the sub-build.
list(
APPEND CMAKE_ARGS
-DZLIB_INCLUDE_DIR=${ZLIB_INCLUDE_DIR}
-DZLIB_LIBRARY=${ZLIB_LIBRARY}
)
endif()
ExternalProject_GitSource(
GRPC_GIT
GIT_REPOSITORY "https://github.com/grpc/grpc.git"
GIT_TAG "v1.8.3"
GIT_SUBMODULES ${GIT_SUBMODULES}
)
ExternalProject_Add(
grpc
DEPENDS
protobuf
zlib
${GRPC_GIT}
PREFIX ${PROJECT_BINARY_DIR}/external/grpc
CMAKE_ARGS
${CMAKE_ARGS}
BUILD_COMMAND
${CMAKE_COMMAND} --build . --target grpc
UPDATE_COMMAND ""
TEST_COMMAND ""
INSTALL_COMMAND ""
)
endif(GRPC_ROOT)
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