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# Copyright 2020 The Android Open Source Project
#
# 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.
cmake_minimum_required(VERSION 3.10.2)
# Build protoc with a host configuration. We need to run it on the host to
# create our proto files.
set(CMAKE_HOST_ARGS
-DBUILD_SHARED_LIBS:BOOL=${BUILD_SHARED_LIBS}
-DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
-DCMAKE_C_COMPILER:STRING=${CMAKE_C_COMPILER}
-DCMAKE_CXX_COMPILER:STRING=${CMAKE_CXX_COMPILER}
-DCMAKE_GENERATOR:STRING=${CMAKE_GENERATOR}
-DCMAKE_MAKE_PROGRAM:FILEPATH=${CMAKE_MAKE_PROGRAM})
set(Protobuf_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../protobuf")
set(Protobuf_HOST_BINARY_DIR "${CMAKE_CURRENT_BINARY_DIR}/protobuf-host")
set(Protobuf_TARGET_BINARY_DIR "${CMAKE_CURRENT_BINARY_DIR}/protobuf-target")
add_custom_command(
OUTPUT "${Protobuf_HOST_BINARY_DIR}/protoc"
# Run another cmake invocation to configure the protobuf project
COMMAND "${CMAKE_COMMAND}"
${CMAKE_HOST_ARGS}
-H${Protobuf_SOURCE_DIR}/cmake
-B${Protobuf_HOST_BINARY_DIR}
-Dprotobuf_BUILD_TESTS:BOOL=OFF
# Run the actual build tool (ninja) to compile protoc for the host
COMMAND "${CMAKE_MAKE_PROGRAM}" protoc
WORKING_DIRECTORY ${Protobuf_HOST_BINARY_DIR}
)
message(STATUS "Building protoc at: ${Protobuf_HOST_BINARY_DIR}/protoc")
# Glob Icing proto sources. Results look like this: icing/proto/document.proto
file(
GLOB_RECURSE
Icing_PROTO_FILES
RELATIVE ${CMAKE_CURRENT_SOURCE_DIR}
"icing/*.proto")
message(STATUS "Icing_PROTO_FILES=${Icing_PROTO_FILES}")
# Run protoc on Icing_PROTO_FILES to generate pb.cc and pb.h files
set(Icing_PROTO_GEN_DIR "${PROTO_GENERATED_FILES_BASE_DIR}/cpp")
file(MAKE_DIRECTORY ${Icing_PROTO_GEN_DIR})
foreach(FILE ${Icing_PROTO_FILES})
# Find the name of the proto file without the .proto extension
string(REGEX REPLACE "\.proto$" "" FILE_NOEXT ${FILE})
list(APPEND Icing_PROTO_SOURCES
"${Icing_PROTO_GEN_DIR}/${FILE_NOEXT}.pb.cc"
"${Icing_PROTO_GEN_DIR}/${FILE_NOEXT}.pb.h")
add_custom_command(
OUTPUT "${Icing_PROTO_GEN_DIR}/${FILE_NOEXT}.pb.cc"
"${Icing_PROTO_GEN_DIR}/${FILE_NOEXT}.pb.h"
COMMAND "${Protobuf_HOST_BINARY_DIR}/protoc"
--proto_path ${CMAKE_CURRENT_SOURCE_DIR}
--cpp_out ${Icing_PROTO_GEN_DIR}
${FILE}
WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
DEPENDS "${Protobuf_HOST_BINARY_DIR}/protoc"
)
endforeach()
message(STATUS "Icing_PROTO_SOURCES=${Icing_PROTO_SOURCES}")
# Compile libprotobuf
set(protobuf_BUILD_TESTS OFF CACHE BOOL "")
add_subdirectory("${Protobuf_SOURCE_DIR}/cmake" ${Protobuf_TARGET_BINARY_DIR})
# Glob Icing C++ sources
# TODO: When supporting cmake v3.12 or higher, use CONFIGURE_DEPENDS in the glob
# below so that cmake knows when to re-generate the makefiles.
file(
# List files recursively
GLOB_RECURSE
# Store into a variable of this name
Icing_CC_SOURCES
# Return paths that are relative to the project root
RELATIVE ${CMAKE_CURRENT_SOURCE_DIR}
# Glob expressions
icing/*.cc icing/*.h
)
# Exclude the same types of files as Android.bp. See the comments there.
list(FILTER Icing_CC_SOURCES EXCLUDE REGEX "^icing/.*_test\.cc$")
list(FILTER Icing_CC_SOURCES EXCLUDE REGEX "^icing/.*_benchmark\.cc$")
list(FILTER Icing_CC_SOURCES EXCLUDE REGEX "^icing/testing/.*$")
list(FILTER Icing_CC_SOURCES EXCLUDE REGEX "^icing/tools/.*$")
message(STATUS "Icing_CC_SOURCES=${Icing_CC_SOURCES}")
add_library(
# .so name
icing
# Shared or static
SHARED
# Provides a relative path to your source file(s).
${Icing_CC_SOURCES}
${Icing_PROTO_SOURCES}
)
target_include_directories(icing PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
target_include_directories(icing PRIVATE ${Icing_PROTO_GEN_DIR})
target_include_directories(icing PRIVATE "${Protobuf_SOURCE_DIR}/src")
target_link_libraries(icing protobuf::libprotobuf log)
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