1# This file controls Flutter-level build steps. It should not be edited.
  2cmake_minimum_required(VERSION 3.14)
  3
  4set(EPHEMERAL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ephemeral")
  5
  6# Configuration provided via flutter tool.
  7include(${EPHEMERAL_DIR}/generated_config.cmake)
  8
  9# TODO: Move the rest of this into files in ephemeral. See
 10# https://github.com/flutter/flutter/issues/57146.
 11set(WRAPPER_ROOT "${EPHEMERAL_DIR}/cpp_client_wrapper")
 12
 13# === Flutter Library ===
 14set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/flutter_windows.dll")
 15
 16# Published to parent scope for install step.
 17set(FLUTTER_LIBRARY ${FLUTTER_LIBRARY} PARENT_SCOPE)
 18set(FLUTTER_ICU_DATA_FILE "${EPHEMERAL_DIR}/icudtl.dat" PARENT_SCOPE)
 19set(PROJECT_BUILD_DIR "${PROJECT_DIR}/build/" PARENT_SCOPE)
 20set(AOT_LIBRARY "${PROJECT_DIR}/build/windows/app.so" PARENT_SCOPE)
 21
 22list(APPEND FLUTTER_LIBRARY_HEADERS
 23  "flutter_export.h"
 24  "flutter_windows.h"
 25  "flutter_messenger.h"
 26  "flutter_plugin_registrar.h"
 27  "flutter_texture_registrar.h"
 28)
 29list(TRANSFORM FLUTTER_LIBRARY_HEADERS PREPEND "${EPHEMERAL_DIR}/")
 30add_library(flutter INTERFACE)
 31target_include_directories(flutter INTERFACE
 32  "${EPHEMERAL_DIR}"
 33)
 34target_link_libraries(flutter INTERFACE "${FLUTTER_LIBRARY}.lib")
 35add_dependencies(flutter flutter_assemble)
 36
 37# === Wrapper ===
 38list(APPEND CPP_WRAPPER_SOURCES_CORE
 39  "core_implementations.cc"
 40  "standard_codec.cc"
 41)
 42list(TRANSFORM CPP_WRAPPER_SOURCES_CORE PREPEND "${WRAPPER_ROOT}/")
 43list(APPEND CPP_WRAPPER_SOURCES_PLUGIN
 44  "plugin_registrar.cc"
 45)
 46list(TRANSFORM CPP_WRAPPER_SOURCES_PLUGIN PREPEND "${WRAPPER_ROOT}/")
 47list(APPEND CPP_WRAPPER_SOURCES_APP
 48  "flutter_engine.cc"
 49  "flutter_view_controller.cc"
 50)
 51list(TRANSFORM CPP_WRAPPER_SOURCES_APP PREPEND "${WRAPPER_ROOT}/")
 52
 53# Wrapper sources needed for a plugin.
 54add_library(flutter_wrapper_plugin STATIC
 55  ${CPP_WRAPPER_SOURCES_CORE}
 56  ${CPP_WRAPPER_SOURCES_PLUGIN}
 57)
 58apply_standard_settings(flutter_wrapper_plugin)
 59set_target_properties(flutter_wrapper_plugin PROPERTIES
 60  POSITION_INDEPENDENT_CODE ON)
 61set_target_properties(flutter_wrapper_plugin PROPERTIES
 62  CXX_VISIBILITY_PRESET hidden)
 63target_link_libraries(flutter_wrapper_plugin PUBLIC flutter)
 64target_include_directories(flutter_wrapper_plugin PUBLIC
 65  "${WRAPPER_ROOT}/include"
 66)
 67add_dependencies(flutter_wrapper_plugin flutter_assemble)
 68
 69# Wrapper sources needed for the runner.
 70add_library(flutter_wrapper_app STATIC
 71  ${CPP_WRAPPER_SOURCES_CORE}
 72  ${CPP_WRAPPER_SOURCES_APP}
 73)
 74apply_standard_settings(flutter_wrapper_app)
 75target_link_libraries(flutter_wrapper_app PUBLIC flutter)
 76target_include_directories(flutter_wrapper_app PUBLIC
 77  "${WRAPPER_ROOT}/include"
 78)
 79add_dependencies(flutter_wrapper_app flutter_assemble)
 80
 81# === Flutter tool backend ===
 82# _phony_ is a non-existent file to force this command to run every time,
 83# since currently there's no way to get a full input/output list from the
 84# flutter tool.
 85set(PHONY_OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/_phony_")
 86set_source_files_properties("${PHONY_OUTPUT}" PROPERTIES SYMBOLIC TRUE)
 87add_custom_command(
 88  OUTPUT ${FLUTTER_LIBRARY} ${FLUTTER_LIBRARY_HEADERS}
 89    ${CPP_WRAPPER_SOURCES_CORE} ${CPP_WRAPPER_SOURCES_PLUGIN}
 90    ${CPP_WRAPPER_SOURCES_APP}
 91    ${PHONY_OUTPUT}
 92  COMMAND ${CMAKE_COMMAND} -E env
 93    ${FLUTTER_TOOL_ENVIRONMENT}
 94    "${FLUTTER_ROOT}/packages/flutter_tools/bin/tool_backend.bat"
 95      windows-x64 $<CONFIG>
 96  VERBATIM
 97)
 98add_custom_target(flutter_assemble DEPENDS
 99  "${FLUTTER_LIBRARY}"
100  ${FLUTTER_LIBRARY_HEADERS}
101  ${CPP_WRAPPER_SOURCES_CORE}
102  ${CPP_WRAPPER_SOURCES_PLUGIN}
103  ${CPP_WRAPPER_SOURCES_APP}
104)