buildroot/package/flutter-engine/Config.in

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# Flutter includes a vender copy of clang which is mandatory to use for
# compiling. These are the supported architectures.
config BR2_PACKAGE_FLUTTER_ENGINE_ARCH_SUPPORTS
bool
default y if BR2_aarch64
default y if BR2_arm && !BR2_ARM_CPU_ARMV4 && !BR2_ARM_CPU_ARMV5
default y if BR2_x86_64
config BR2_PACKAGE_FLUTTER_ENGINE
bool "flutter-engine"
depends on BR2_PACKAGE_FLUTTER_ENGINE_ARCH_SUPPORTS
depends on BR2_TOOLCHAIN_USES_GLIBC
depends on BR2_TOOLCHAIN_GCC_AT_LEAST_5
depends on BR2_INSTALL_LIBSTDCPP
depends on !BR2_TOOLCHAIN_HAS_GCC_BUG_64735 # std::shared_future
depends on !BR2_STATIC_LIBS
depends on BR2_USE_WCHAR # std::wstring
depends on BR2_HOST_GCC_AT_LEAST_5
depends on BR2_PACKAGE_HAS_LIBGL || BR2_PACKAGE_HAS_LIBGLES
select BR2_PACKAGE_FREETYPE
select BR2_PACKAGE_HOST_DEPOT_TOOLS
select BR2_PACKAGE_ZLIB
help
Flutter is Google's SDK for crafting beautiful, fast user
experience for mobile, web, and desktop from a single
codebase. Flutter works with existing code, is used by
developers and organizations around the world, and is
free and open source.
The Flutter Engine is a portable runtime for hosting
Flutter applications. It implements Flutter's core
libraries, including animation and graphics, file and
network I/O, accessibility support, plugin architecture,
and a Dart runtime and compile toolchain. Most developers
will interact with Flutter via the Flutter Framework,
which provides a modern, reactive framework, and a rich
set of platform, layout and foundation widgets.
https://github.com/flutter/engine
comment "flutter-engine needs an OpenGL or OpenGLES backend"
depends on BR2_PACKAGE_FLUTTER_ENGINE_ARCH_SUPPORTS
depends on !BR2_PACKAGE_HAS_LIBGL && !BR2_PACKAGE_HAS_LIBGLES
comment "flutter-engine needs a glibc toolchain w/ wchar, C++, gcc >= 5, dynamic library, host gcc >= 5"
depends on BR2_PACKAGE_FLUTTER_ENGINE_ARCH_SUPPORTS
depends on !BR2_TOOLCHAIN_USES_GLIBC || !BR2_INSTALL_LIBSTDCPP \
|| !BR2_TOOLCHAIN_GCC_AT_LEAST_5 || BR2_STATIC_LIBS \
|| !BR2_USE_WCHAR || !BR2_HOST_GCC_AT_LEAST_5
comment "flutter-engine needs a toolchain not affected by GCC bug 64735"
depends on BR2_PACKAGE_FLUTTER_ENGINE_ARCH_SUPPORTS
depends on BR2_TOOLCHAIN_HAS_GCC_BUG_64735