1# Copyright 2020 The Android Open Source Project
2#
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
6#
7#      http://www.apache.org/licenses/LICENSE-2.0
8#
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.
14
15cmake_minimum_required(VERSION 3.10.2)
16
17add_definitions("-DICING_REVERSE_JNI_SEGMENTATION=1")
18set(VERSION_SCRIPT "${CMAKE_CURRENT_SOURCE_DIR}/icing/jni.lds")
19set(CMAKE_SHARED_LINKER_FLAGS
20    "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--gc-sections -Wl,--version-script=${VERSION_SCRIPT}")
21
22set(
23    Protobuf_PREBUILTS_DIR
24    "${CMAKE_CURRENT_SOURCE_DIR}/../../prebuilts/protobuf")
25set(Protobuf_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../protobuf")
26set(Protobuf_TARGET_BINARY_DIR "${CMAKE_CURRENT_BINARY_DIR}/protobuf-target")
27set(Icing_PROTO_GEN_DIR "${CMAKE_CURRENT_BINARY_DIR}/icing-protobuf-gen")
28
29## Configure libprotobuf ##
30# Find the right protoc to compile our proto files
31if(${CMAKE_HOST_SYSTEM_NAME} STREQUAL "Darwin")
32  set(Protobuf_PROTOC_PATH "${Protobuf_PREBUILTS_DIR}/darwin-x86_64/protoc")
33elseif(${CMAKE_HOST_SYSTEM_NAME} STREQUAL "Linux")
34  set(Protobuf_PROTOC_PATH "${Protobuf_PREBUILTS_DIR}/linux-x86_64/protoc")
35elseif(${CMAKE_HOST_SYSTEM_NAME} STREQUAL "Windows")
36  set(Protobuf_PROTOC_PATH "${Protobuf_PREBUILTS_DIR}/windows-x86/protoc.exe")
37else()
38  message(
39      FATAL_ERROR
40      "No protoc prebuilt found for host OS ${CMAKE_HOST_SYSTEM_NAME}")
41endif()
42message(STATUS "Using prebuilt protoc at: ${Protobuf_PROTOC_PATH}")
43
44# Compile libprotobuf
45set(protobuf_BUILD_TESTS OFF CACHE BOOL "")
46add_subdirectory("${Protobuf_SOURCE_DIR}/cmake" ${Protobuf_TARGET_BINARY_DIR})
47
48# Compile libandroidicu
49set(ICU_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../icu/libandroidicu")
50set(ICU_TARGET_BINARY_DIR "${CMAKE_CURRENT_BINARY_DIR}/icu-target")
51add_subdirectory("${ICU_SOURCE_DIR}/static_shim" ${ICU_TARGET_BINARY_DIR})
52
53# Glob Icing proto sources. Results look like this: icing/proto/document.proto
54file(
55    GLOB_RECURSE
56    Icing_PROTO_FILES
57    RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}/proto"
58    "*.proto")
59message(STATUS "Icing_PROTO_FILES=${Icing_PROTO_FILES}")
60
61
62# Run protoc on Icing_PROTO_FILES to generate pb.cc and pb.h files
63# The DEPENDS section of add_custom_command could trigger a remake if any proto
64# source file has been updated.
65file(MAKE_DIRECTORY ${Icing_PROTO_GEN_DIR})
66foreach(FILE ${Icing_PROTO_FILES})
67    # Find the name of the proto file without the .proto extension
68    string(REGEX REPLACE "\.proto$" "" FILE_NOEXT ${FILE})
69    list(APPEND Icing_PROTO_SOURCES
70      "${Icing_PROTO_GEN_DIR}/${FILE_NOEXT}.pb.cc"
71      "${Icing_PROTO_GEN_DIR}/${FILE_NOEXT}.pb.h")
72    add_custom_command(
73        OUTPUT "${Icing_PROTO_GEN_DIR}/${FILE_NOEXT}.pb.cc"
74          "${Icing_PROTO_GEN_DIR}/${FILE_NOEXT}.pb.h"
75        COMMAND ${Protobuf_PROTOC_PATH}
76          --proto_path "${CMAKE_CURRENT_SOURCE_DIR}/proto"
77          --cpp_out ${Icing_PROTO_GEN_DIR}
78          ${FILE}
79        WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
80        DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/proto/${FILE}
81    )
82endforeach()
83message(STATUS "Icing_PROTO_SOURCES=${Icing_PROTO_SOURCES}")
84
85# Glob Icing C++ sources
86# TODO: When supporting cmake v3.12 or higher, use CONFIGURE_DEPENDS in the glob
87# below so that cmake knows when to re-generate the makefiles.
88file(
89    # List files recursively
90    GLOB_RECURSE
91    # Store into a variable of this name
92    Icing_CC_SOURCES
93    # Return paths that are relative to the project root
94    RELATIVE ${CMAKE_CURRENT_SOURCE_DIR}
95    # Glob expressions
96    icing/*.cc icing/*.h
97)
98
99# TODO(b/170611579): When supporting cmake v3.12 or higher, use CONFIGURE_DEPENDS
100# in the glob and remove this section.
101include(synced_AOSP_CL_number.txt)
102
103# Exclude the same types of files as Android.bp. See the comments there.
104list(FILTER Icing_CC_SOURCES EXCLUDE REGEX "^icing/.*[^a-zA-Z0-9]test[^a-zA-Z0-9].*$")
105list(FILTER Icing_CC_SOURCES EXCLUDE REGEX "^icing/.*_benchmark\.cc$")
106list(FILTER Icing_CC_SOURCES EXCLUDE REGEX "^icing/helpers/icu/.*$")
107list(FILTER Icing_CC_SOURCES EXCLUDE REGEX "^icing/testing/.*$")
108list(FILTER Icing_CC_SOURCES EXCLUDE REGEX "^icing/tokenization/icu/.*$")
109list(FILTER Icing_CC_SOURCES EXCLUDE REGEX "^icing/tokenization/simple/.*$")
110list(FILTER Icing_CC_SOURCES EXCLUDE REGEX "^icing/tools/.*$")
111list(FILTER Icing_CC_SOURCES EXCLUDE REGEX "^icing/transform/icu/.*$")
112list(FILTER Icing_CC_SOURCES EXCLUDE REGEX "^icing/transform/simple/.*$")
113message(STATUS "Icing_CC_SOURCES=${Icing_CC_SOURCES}")
114
115add_library(
116    # .so name
117    icing
118
119    # Shared or static
120    SHARED
121
122    # Provides a relative path to your source file(s).
123    ${Icing_CC_SOURCES}
124    ${Icing_PROTO_SOURCES}
125)
126target_include_directories(icing PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
127target_include_directories(icing PRIVATE ${Icing_PROTO_GEN_DIR})
128target_include_directories(icing PRIVATE "${Protobuf_SOURCE_DIR}/src")
129target_include_directories(icing PRIVATE "${ICU_SOURCE_DIR}/include")
130target_link_libraries(icing protobuf::libprotobuf libandroidicu log)
131