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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)
ExternalProject_GitSource(
NANOPB_GIT
GIT_REPOSITORY "https://github.com/nanopb/nanopb.git"
GIT_TAG "0.3.8"
)
set(
NANOPB_PROTOC_BIN
${FIREBASE_INSTALL_DIR}/external/protobuf/src/protobuf-build/src/protoc
)
ExternalProject_Add(
nanopb
DEPENDS
protobuf
${NANOPB_GIT}
BUILD_IN_SOURCE ON
PREFIX ${PROJECT_BINARY_DIR}/external/nanopb
# Note for (not yet released) nanopb 0.4.0: nanopb will (likely) switch to
# cmake for the protoc plugin. Set these additional cmake variables to use
# it.
# -Dnanopb_BUILD_GENERATOR:BOOL=ON
# -Dnanopb_PROTOC_PATH:STRING=${FIREBASE_INSTALL_DIR}/external/protobuf/src/protobuf-build/src/protoc
CMAKE_ARGS
-DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
-DBUILD_SHARED_LIBS:BOOL=OFF
BUILD_COMMAND
COMMAND
${CMAKE_COMMAND} --build .
# NB: The following additional command is only necessary to regenerate the
# nanopb proto files.
COMMAND
make -C <SOURCE_DIR>/generator/proto
# nanopb relies on $PATH for the location of protoc. cmake makes it difficult
# to adjust the path, so we'll just patch the build files with the exact
# location of protoc.
#
# NB: cmake sometimes runs the patch command multiple times in the same src
# dir, so we need to make sure this is idempotent. (eg 'make && make clean &&
# make')
PATCH_COMMAND
grep ${NANOPB_PROTOC_BIN} ./generator/proto/Makefile
|| perl -i -pe s,protoc,${NANOPB_PROTOC_BIN},g
./CMakeLists.txt ./generator/proto/Makefile
UPDATE_COMMAND ""
INSTALL_COMMAND ""
)
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