GN targets to create flutter_web_sdk.

build/archives/BUILD.gn

@@ -1,7 +1,7 @@
 import("//flutter/build/zip_bundle.gni")
 
 zip_bundle("artifacts") {
-  output = "$host_os-$target_cpu/artifacts.zip"
+  output = "$host_os_cpu_name/artifacts.zip"
   deps = [
     "//flutter/flutter_frontend_server:frontend_server",
     "//flutter/lib/snapshot:generate_snapshot_bin",
@@ -82,3 +82,8 @@ if (build_engine_artifacts && flutter_prebuilt_dart_sdk) {
         [ "$root_out_dir/zip_archives/dart-sdk-$prebuilt_dart_sdk_config" ]
   }
 }
+
+# Archives Flutter Web SDK
+group("flutter_web_sdk") {
+  deps = [ "//flutter/web_sdk:flutter_web_sdk_archive" ]
+}

common/config.gni

@@ -66,7 +66,18 @@ if (is_ios || is_mac) {
   flutter_cflags_objcc_arc = flutter_cflags_objc_arc
 }
 
-# prebuilt Dart SDK location
+# A combo of host os name and cpu is used in several locations to
+# generate the names of the archived artifacts.
+_host_os_name = host_os
+if (_host_os_name == "mac") {
+  _host_os_name = "macos"
+} else if (_host_os_name == "win" || _host_os_name == "winuwp") {
+  _host_os_name = "windows"
+}
+
+host_os_cpu_name = "$_host_os_name-$host_cpu"
+
+# Prebuilt Dart SDK location
 
 if (flutter_prebuilt_dart_sdk) {
   _target_os_name = target_os
@@ -76,15 +87,8 @@ if (flutter_prebuilt_dart_sdk) {
     _target_os_name = "windows"
   }
 
-  _host_os_name = host_os
-  if (_host_os_name == "mac") {
-    _host_os_name = "macos"
-  } else if (_host_os_name == "win" || _host_os_name == "winuwp") {
-    _host_os_name = "windows"
-  }
-
   _target_prebuilt_dart_sdk_config = "$_target_os_name-$target_cpu"
-  _host_prebuilt_dart_sdk_config = "$_host_os_name-$host_cpu"
+  _host_prebuilt_dart_sdk_config = "$host_os_cpu_name"
   _target_prebuilt_dart_sdk_archive = "//flutter/prebuilts/dartsdk-$_target_prebuilt_dart_sdk_config-release.zip"
   _host_prebuilt_dart_sdk_archive =
       "//flutter/prebuilts/dartsdk-$_host_prebuilt_dart_sdk_config-release.zip"

web_sdk/BUILD.gn

@@ -2,6 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//flutter/build/zip_bundle.gni")
 import("//flutter/common/config.gni")
 import("//third_party/dart/build/dart/dart_action.gni")
 
@@ -256,6 +257,8 @@ _dartdevc("flutter_dartdevc_kernel_sdk") {
   outputs = [
     "$root_out_dir/flutter_web_sdk/kernel/amd/dart_sdk.js",
     "$root_out_dir/flutter_web_sdk/kernel/amd/dart_sdk.js.map",
+    "$root_out_dir/flutter_web_sdk/kernel/legacy/dart_sdk.js",
+    "$root_out_dir/flutter_web_sdk/kernel/legacy/dart_sdk.js.map",
   ]
 
   args = [
@@ -300,6 +303,8 @@ _dartdevc("flutter_dartdevc_canvaskit_kernel_sdk") {
   outputs = [
     "$root_out_dir/flutter_web_sdk/kernel/amd-canvaskit/dart_sdk.js",
     "$root_out_dir/flutter_web_sdk/kernel/amd-canvaskit/dart_sdk.js.map",
+    "$root_out_dir/flutter_web_sdk/kernel/legacy-canvaskit/dart_sdk.js",
+    "$root_out_dir/flutter_web_sdk/kernel/legacy-canvaskit/dart_sdk.js.map",
   ]
 
   args = [
@@ -346,6 +351,8 @@ _dartdevc("flutter_dartdevc_canvaskit_html_kernel_sdk") {
   outputs = [
     "$root_out_dir/flutter_web_sdk/kernel/amd-canvaskit-html/dart_sdk.js",
     "$root_out_dir/flutter_web_sdk/kernel/amd-canvaskit-html/dart_sdk.js.map",
+    "$root_out_dir/flutter_web_sdk/kernel/legacy-canvaskit-html/dart_sdk.js",
+    "$root_out_dir/flutter_web_sdk/kernel/legacy-canvaskit-html/dart_sdk.js.map",
   ]
 
   args = [
@@ -392,6 +399,8 @@ _dartdevc("flutter_dartdevc_kernel_sdk_sound") {
   outputs = [
     "$root_out_dir/flutter_web_sdk/kernel/amd-sound/dart_sdk.js",
     "$root_out_dir/flutter_web_sdk/kernel/amd-sound/dart_sdk.js.map",
+    "$root_out_dir/flutter_web_sdk/kernel/legacy-sound/dart_sdk.js",
+    "$root_out_dir/flutter_web_sdk/kernel/legacy-sound/dart_sdk.js.map",
   ]
 
   args = [
@@ -437,6 +446,8 @@ _dartdevc("flutter_dartdevc_canvaskit_kernel_sdk_sound") {
   outputs = [
     "$root_out_dir/flutter_web_sdk/kernel/amd-canvaskit-sound/dart_sdk.js",
     "$root_out_dir/flutter_web_sdk/kernel/amd-canvaskit-sound/dart_sdk.js.map",
+    "$root_out_dir/flutter_web_sdk/kernel/legacy-canvaskit-sound/dart_sdk.js",
+    "$root_out_dir/flutter_web_sdk/kernel/legacy-canvaskit-sound/dart_sdk.js.map",
   ]
 
   args = [
@@ -483,6 +494,8 @@ _dartdevc("flutter_dartdevc_canvaskit_html_kernel_sdk_sound") {
   outputs = [
     "$root_out_dir/flutter_web_sdk/kernel/amd-canvaskit-html-sound/dart_sdk.js",
     "$root_out_dir/flutter_web_sdk/kernel/amd-canvaskit-html-sound/dart_sdk.js.map",
+    "$root_out_dir/flutter_web_sdk/kernel/legacy-canvaskit-html-sound/dart_sdk.js",
+    "$root_out_dir/flutter_web_sdk/kernel/legacy-canvaskit-html-sound/dart_sdk.js.map",
   ]
 
   args = [
@@ -551,3 +564,59 @@ _kernel_worker("flutter_dartdevc_kernel_sdk_outline_sound") {
     "dart:_engine",
   ]
 }
+
+# Archives Flutter Web SDK
+zip_bundle("flutter_web_sdk_archive") {
+  output = "flutter-web-sdk-${host_os_cpu_name}.zip"
+  deps = [
+    ":flutter_dartdevc_canvaskit_html_kernel_sdk",
+    ":flutter_dartdevc_canvaskit_html_kernel_sdk_sound",
+    ":flutter_dartdevc_canvaskit_kernel_sdk",
+    ":flutter_dartdevc_canvaskit_kernel_sdk_sound",
+    ":flutter_dartdevc_kernel_sdk",
+    ":flutter_dartdevc_kernel_sdk_outline",
+    ":flutter_dartdevc_kernel_sdk_outline_sound",
+    ":flutter_dartdevc_kernel_sdk_sound",
+    ":web_engine_sources",
+    ":web_ui_library",
+    ":web_ui_sources",
+  ]
+  sources = get_target_outputs(":flutter_dartdevc_canvaskit_html_kernel_sdk")
+  sources +=
+      get_target_outputs(":flutter_dartdevc_canvaskit_html_kernel_sdk_sound")
+  sources += get_target_outputs(":flutter_dartdevc_canvaskit_kernel_sdk")
+  sources += get_target_outputs(":flutter_dartdevc_canvaskit_kernel_sdk_sound")
+  sources += get_target_outputs(":flutter_dartdevc_kernel_sdk")
+  sources += get_target_outputs(":flutter_dartdevc_kernel_sdk_outline")
+  sources += get_target_outputs(":flutter_dartdevc_kernel_sdk_outline_sound")
+  sources += get_target_outputs(":flutter_dartdevc_kernel_sdk_sound")
+  sources += get_target_outputs(":web_ui_library")
+  tmp_files = []
+  foreach(source, sources) {
+    tmp_files += [
+      {
+        source = source
+        destination = rebase_path(source, "$root_build_dir")
+      },
+    ]
+  }
+  foreach(source, web_ui_sources) {
+    rebased_path = rebase_path(source, "//flutter/lib/web_ui/lib")
+    tmp_files += [
+      {
+        source = source
+        destination = "flutter_web_sdk/lib/ui/$rebased_path"
+      },
+    ]
+  }
+  foreach(source, web_engine_sources) {
+    rebased_path = rebase_path(source, "//flutter/lib/web_ui/lib/src")
+    tmp_files += [
+      {
+        source = source
+        destination = "flutter_web_sdk/lib/_engine/$rebased_path"
+      },
+    ]
+  }
+  files = tmp_files
+}