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Wojtek Figat
198
Source/Tools/Flax.Build/Platforms/Android/AndroidToolchain.cs
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198
Source/Tools/Flax.Build/Platforms/Android/AndroidToolchain.cs
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// Copyright (c) 2012-2020 Wojciech Figat. All rights reserved.
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using System.Collections.Generic;
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using System.IO;
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using Flax.Build.Graph;
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using Flax.Build.NativeCpp;
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namespace Flax.Build
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{
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partial class Configuration
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{
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/// <summary>
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/// Specifies the Android API level to use (eg. 24).
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/// </summary>
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[CommandLine("androidPlatformApi", "<version>", "Specifies the Android API level to use (eg. 24).")]
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public static int AndroidPlatformApi = 24;
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}
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}
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namespace Flax.Build.Platforms
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{
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/// <summary>
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/// The Android build toolchain implementation.
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/// </summary>
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/// <seealso cref="Platform" />
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/// <seealso cref="UnixToolchain" />
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public class AndroidToolchain : UnixToolchain
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{
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/// <summary>
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/// Initializes a new instance of the <see cref="AndroidToolchain"/> class.
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/// </summary>
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/// <param name="platform">The platform.</param>
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/// <param name="architecture">The target architecture.</param>
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/// <param name="toolchainRoot">The toolchain root path.</param>
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public AndroidToolchain(AndroidPlatform platform, TargetArchitecture architecture, string toolchainRoot)
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: base(platform, architecture, toolchainRoot, false, string.Empty)
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{
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var toolchain = ToolsetRoot.Replace('\\', '/');
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SystemIncludePaths.Add(Path.Combine(toolchain, "sources/usr/include/c++/v1").Replace('\\', '/'));
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SystemIncludePaths.Add(Path.Combine(toolchain, "sysroot/usr/include").Replace('\\', '/'));
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SystemIncludePaths.Add(Path.Combine(toolchain, "sysroot/usr/local/include").Replace('\\', '/'));
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SystemIncludePaths.Add(Path.Combine(toolchain, "lib64/clang/9.0.8/include").Replace('\\', '/'));
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}
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/// <summary>
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/// Gets the Android ABI name for a given processor architecture.
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/// </summary>
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/// <param name="architecture">The architecture.</param>
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/// <returns>The Android ABI name.</returns>
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public static string GetAbiName(TargetArchitecture architecture)
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{
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switch (architecture)
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{
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case TargetArchitecture.x86: return "x86";
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case TargetArchitecture.x64: return "x86_64";
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case TargetArchitecture.ARM: return "armeabi-v7a";
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case TargetArchitecture.ARM64: return "arm64-v8a";
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default: throw new InvalidArchitectureException(architecture);
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}
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}
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/// <inheritdoc />
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public override void SetupEnvironment(BuildOptions options)
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{
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base.SetupEnvironment(options);
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options.CompileEnv.PreprocessorDefinitions.Add("PLATFORM_ANDROID");
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options.CompileEnv.PreprocessorDefinitions.Add(string.Format("__ANDROID_API__={0}", Configuration.AndroidPlatformApi));
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options.LinkEnv.InputLibraries.Add("c");
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options.LinkEnv.InputLibraries.Add("z");
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options.LinkEnv.InputLibraries.Add("log");
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options.LinkEnv.InputLibraries.Add("android");
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}
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/// <inheritdoc />
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protected override void SetupCompileCppFilesArgs(TaskGraph graph, BuildOptions options, List<string> args, string outputPath)
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{
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base.SetupCompileCppFilesArgs(graph, options, args, outputPath);
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var toolchain = ToolsetRoot.Replace('\\', '/');
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args.Add(string.Format("--target={0}", ArchitectureName));
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args.Add(string.Format("--gcc-toolchain=\"{0}\"", toolchain));
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args.Add(string.Format("--sysroot=\"{0}/sysroot\"", toolchain));
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args.Add("-fpic");
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args.Add("-funwind-tables");
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args.Add("-no-canonical-prefixes");
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if (options.Configuration != TargetConfiguration.Release)
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{
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args.Add("-fstack-protector-strong");
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args.Add("-D_FORTIFY_SOURCE=2");
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}
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else
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{
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args.Add("-D_FORTIFY_SOURCE=1");
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}
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if (options.CompileEnv.DebugInformation)
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{
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args.Add("-g2 -gdwarf-4");
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args.Add("-fno-omit-frame-pointer");
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args.Add("-fno-function-sections");
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}
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switch (Architecture)
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{
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case TargetArchitecture.x86:
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args.Add("-march=atom");
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if (Configuration.AndroidPlatformApi < 24)
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args.Add("-mstackrealign");
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break;
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case TargetArchitecture.x64:
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args.Add("-march=atom");
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break;
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case TargetArchitecture.ARM:
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args.Add("-march=armv7-a");
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args.Add("-mfloat-abi=softfp");
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args.Add("-mfpu=vfpv3-d16");
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break;
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case TargetArchitecture.ARM64:
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args.Add("-march=armv8-a");
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break;
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default: throw new InvalidArchitectureException(Architecture);
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}
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}
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/// <inheritdoc />
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protected override void SetupLinkFilesArgs(TaskGraph graph, BuildOptions options, List<string> args, string outputFilePath)
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{
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base.SetupLinkFilesArgs(graph, options, args, outputFilePath);
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args.Add("-shared");
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args.Add("-no-canonical-prefixes");
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args.Add("-Wl,-Bsymbolic");
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args.Add("-Wl,--build-id=sha1");
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args.Add("-Wl,-gc-sections");
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if (options.LinkEnv.Output == LinkerOutput.Executable)
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{
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args.Add("-u ANativeActivity_onCreate");
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}
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string target;
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switch (Architecture)
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{
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case TargetArchitecture.x86:
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target = "i686-none-linux-android";
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break;
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case TargetArchitecture.x64:
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target = "x86_64-none-linux-android";
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break;
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case TargetArchitecture.ARM:
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target = "armv7-none-linux-androideabi";
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break;
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case TargetArchitecture.ARM64:
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target = "aarch64-none-linux-android";
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break;
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default: throw new InvalidArchitectureException(Architecture);
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}
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var toolchain = ToolsetRoot.Replace('\\', '/');
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args.Add(string.Format("--sysroot=\"{0}/sysroot\"", toolchain));
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args.Add(string.Format("--gcc-toolchain=\"{0}\"", toolchain));
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args.Add("--target=" + target + Configuration.AndroidPlatformApi);
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}
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/// <inheritdoc />
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protected override void SetupArchiveFilesArgs(TaskGraph graph, BuildOptions options, List<string> args, string outputFilePath)
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{
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// Remove -o from the output file specifier
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args[1] = string.Format("\"{0}\"", outputFilePath);
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base.SetupArchiveFilesArgs(graph, options, args, outputFilePath);
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}
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/// <inheritdoc />
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protected override Task CreateArchive(TaskGraph graph, BuildOptions options, string outputFilePath)
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{
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var task = base.CreateArchive(graph, options, outputFilePath);
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task.CommandPath = LlvmArPath;
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return task;
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}
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/// <inheritdoc />
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protected override Task CreateBinary(TaskGraph graph, BuildOptions options, string outputFilePath)
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{
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// Bundle STL library for the executable files for runtime
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if (options.LinkEnv.Output == LinkerOutput.Executable)
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{
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graph.AddCopyFile(Path.Combine(Path.GetDirectoryName(outputFilePath), "libc++_shared.so"), Path.Combine(AndroidNdk.Instance.RootPath, "sources/cxx-stl/llvm-libc++/libs/", GetAbiName(Architecture), "libc++_shared.so"));
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}
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var task = base.CreateBinary(graph, options, outputFilePath);
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task.CommandPath = ClangPath;
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return task;
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}
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}
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}
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