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samples/asset_transformation/linux/flutter/CMakeLists.txt

89 lines
2.7 KiB

Add asset transformation sample (#2267) This adds a sample Flutter project that demonstrates a soon-to-be-released feature, asset transformation[^1]. [PR for flutter.dev documentation](https://github.com/flutter/website/pull/10471). This feature isn't the easiest to explain using documentation, so I think augmenting that documentation with a sample is appropriate. This sample demonstrates 1) how to use an existing Dart package (that is compatible with the feature) as an asset transformer and 2) how to write a Dart package that is compatible with this feature. This should be clear from the README.md. **Advice for reviewing this PR.** The goal here is that most users that read the documentation and follow the link from there to this sample should be able to figure out what the feature does and how to use it. Try to imagine yourself in this position and follow this story. If the feature is still unclear, then there is probably something we can do to improve this sample or the docs. Said more simply, follow these steps: 1) Start at the new section to be added to Flutter.dev (https://flutter-docs-prod--pr10471-document-asset-transformers-cc21qf01.web.app/ui/assets/assets-and-images#automatic-transformation-of-asset-files-at-build-time). It should naturally link you to the sample project. Start with the README and see if things make sense. ## Pre-launch Checklist - [X] I read the [Flutter Style Guide] _recently_, and have followed its advice. - [X] I signed the [CLA]. - [X] I read the [Contributors Guide]. - [X] I updated/added relevant documentation (doc comments with `///`). - [X] All existing and new tests are passing. If you need help, consider asking for advice on the #hackers-devrel channel on [Discord]. <!-- Links --> [Flutter Style Guide]: https://github.com/flutter/flutter/wiki/Style-guide-for-Flutter-repo [CLA]: https://cla.developers.google.com/ [Discord]: https://github.com/flutter/flutter/wiki/Chat [Contributors Guide]: https://github.com/flutter/samples/blob/main/CONTRIBUTING.md [^1]: If you are super curious about this feature, see [the tracking issue for its implementation](https://github.com/flutter/flutter/issues/143348). --------- Co-authored-by: Eric Windmill <eric@ericwindmill.com>
6 months ago
# This file controls Flutter-level build steps. It should not be edited.
cmake_minimum_required(VERSION 3.10)
set(EPHEMERAL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ephemeral")
# Configuration provided via flutter tool.
include(${EPHEMERAL_DIR}/generated_config.cmake)
# TODO: Move the rest of this into files in ephemeral. See
# https://github.com/flutter/flutter/issues/57146.
# Serves the same purpose as list(TRANSFORM ... PREPEND ...),
# which isn't available in 3.10.
function(list_prepend LIST_NAME PREFIX)
set(NEW_LIST "")
foreach(element ${${LIST_NAME}})
list(APPEND NEW_LIST "${PREFIX}${element}")
endforeach(element)
set(${LIST_NAME} "${NEW_LIST}" PARENT_SCOPE)
endfunction()
# === Flutter Library ===
# System-level dependencies.
find_package(PkgConfig REQUIRED)
pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
pkg_check_modules(GLIB REQUIRED IMPORTED_TARGET glib-2.0)
pkg_check_modules(GIO REQUIRED IMPORTED_TARGET gio-2.0)
set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/libflutter_linux_gtk.so")
# Published to parent scope for install step.
set(FLUTTER_LIBRARY ${FLUTTER_LIBRARY} PARENT_SCOPE)
set(FLUTTER_ICU_DATA_FILE "${EPHEMERAL_DIR}/icudtl.dat" PARENT_SCOPE)
set(PROJECT_BUILD_DIR "${PROJECT_DIR}/build/" PARENT_SCOPE)
set(AOT_LIBRARY "${PROJECT_DIR}/build/lib/libapp.so" PARENT_SCOPE)
list(APPEND FLUTTER_LIBRARY_HEADERS
"fl_basic_message_channel.h"
"fl_binary_codec.h"
"fl_binary_messenger.h"
"fl_dart_project.h"
"fl_engine.h"
"fl_json_message_codec.h"
"fl_json_method_codec.h"
"fl_message_codec.h"
"fl_method_call.h"
"fl_method_channel.h"
"fl_method_codec.h"
"fl_method_response.h"
"fl_plugin_registrar.h"
"fl_plugin_registry.h"
"fl_standard_message_codec.h"
"fl_standard_method_codec.h"
"fl_string_codec.h"
"fl_value.h"
"fl_view.h"
"flutter_linux.h"
)
list_prepend(FLUTTER_LIBRARY_HEADERS "${EPHEMERAL_DIR}/flutter_linux/")
add_library(flutter INTERFACE)
target_include_directories(flutter INTERFACE
"${EPHEMERAL_DIR}"
)
target_link_libraries(flutter INTERFACE "${FLUTTER_LIBRARY}")
target_link_libraries(flutter INTERFACE
PkgConfig::GTK
PkgConfig::GLIB
PkgConfig::GIO
)
add_dependencies(flutter flutter_assemble)
# === Flutter tool backend ===
# _phony_ is a non-existent file to force this command to run every time,
# since currently there's no way to get a full input/output list from the
# flutter tool.
add_custom_command(
OUTPUT ${FLUTTER_LIBRARY} ${FLUTTER_LIBRARY_HEADERS}
${CMAKE_CURRENT_BINARY_DIR}/_phony_
COMMAND ${CMAKE_COMMAND} -E env
${FLUTTER_TOOL_ENVIRONMENT}
"${FLUTTER_ROOT}/packages/flutter_tools/bin/tool_backend.sh"
${FLUTTER_TARGET_PLATFORM} ${CMAKE_BUILD_TYPE}
VERBATIM
)
add_custom_target(flutter_assemble DEPENDS
"${FLUTTER_LIBRARY}"
${FLUTTER_LIBRARY_HEADERS}
)