[windows] Switch to GN for library build

.appveyor.yml

@@ -21,6 +21,10 @@ install:
   # of FDE, so for now clone master instead.
   #- ps: build\ci\install_flutter.ps1 $env:APPVEYOR_BUILD_FOLDER\..
   - git clone -b master https://github.com/flutter/flutter.git %APPVEYOR_BUILD_FOLDER%\..\flutter
+  - ps: build\ci\windows\install_gn.ps1 "$env:APPVEYOR_BUILD_FOLDER\bin"
+  - tools\run_dart_tool.bat fetch_jsoncpp %APPVEYOR_BUILD_FOLDER%\third_party\jsoncpp\src
 
 build_script:
+  - set "PATH=%APPVEYOR_BUILD_FOLDER%\bin;C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Auxiliary\Build\;%PATH%"
+  # With the GN build done, build the example.
   - msbuild "example\windows_fde\Example Embedder.sln"

build/ci/windows/install_gn.ps1

@@ -0,0 +1,34 @@
+# Copyright 2019 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+$GN_URI = 'https://chrome-infra-packages.appspot.com/dl/gn/gn/windows-amd64/+/latest'
+$NINJA_URI = 'https://github.com/ninja-build/ninja/releases/download/v1.9.0/ninja-win.zip'
+$TEMP_LOCATION = '{0}\tool.zip' -f $env:temp
+
+if (!(Test-Path $env:temp)) {
+  New-Item -ItemType Directory -Path $env:temp | Out-Null
+}
+
+Write-Output ('Installing GN tools to {0}' -f $args[0])
+
+# Ninja download requires TLS 1.2
+[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
+
+Write-Output ('Downloading {0}' -f $GN_URI)
+(New-Object System.Net.WebClient).DownloadFile($GN_URI, $TEMP_LOCATION)
+Expand-Archive $TEMP_LOCATION -DestinationPath $args[0]
+
+Write-Output ('Downloading {0}' -f $NINJA_URI)
+(New-Object System.Net.WebClient).DownloadFile($NINJA_URI, $TEMP_LOCATION)
+Expand-Archive $TEMP_LOCATION -DestinationPath $args[0]

example/README.md

@@ -66,21 +66,14 @@ to a XIB in your own project:
 
 ### Windows
 
-Open the `Example Embedder` Visual Studio solution file under `windows_fde\` and
-build the GLFW Example project.
+Open the `Example Embedder` Visual Studio solution file under `windows_fde\` to
+build and run the GLFW Example project.
 
-The resulting binary will be in `bin\x64\$(Configuration)\GLFW Example\`. It
-currently uses relative paths so must be run from the `windows_fde\` directory:
+The resulting binary will be in
+`example\build\windows_fde\x64\$(Configuration)\GLFW Example\`. It currently
+uses relative paths so if you run it manually it must be run from the
+`example\windows_fde\` directory. E.g.:
 
 ```
-> ".\bin\x64\$(Configuration)\GLFW Example\GLFW Example.exe"
+> "..\build\windows_fde\x64\Debug\GLFW Example\GLFW Example.exe"
 ```
-
-e.g.:
-
-```
-> ".\bin\x64\Debug Dynamic Library\GLFW Example\GLFW Example.exe"
-```
-
-Or you can use Visual Studio's inbuilt debugger to build and run the
-example application automatically.

example/windows_fde/Example Embedder.sln

@@ -1,34 +1,25 @@
-
-Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 15
-VisualStudioVersion = 15.0.27703.2026
-MinimumVisualStudioVersion = 10.0.40219.1
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "GLFW Example", "GLFW Example.vcxproj", "{5A827760-CF8B-408A-99A3-B6C0AD2271E7}"
-	ProjectSection(ProjectDependencies) = postProject
-		{90057FD8-9460-43A6-8CDF-3AAC1C4255E5} = {90057FD8-9460-43A6-8CDF-3AAC1C4255E5}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "GLFW Library", "..\..\library\windows\GLFW Library.vcxproj", "{90057FD8-9460-43A6-8CDF-3AAC1C4255E5}"
-EndProject
-Global
-	GlobalSection(SolutionConfigurationPlatforms) = preSolution
-		Debug Dynamic Library|x64 = Debug Dynamic Library|x64
-		Release Dynamic Library|x64 = Release Dynamic Library|x64
-	EndGlobalSection
-	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{90057FD8-9460-43A6-8CDF-3AAC1C4255E5}.Debug Dynamic Library|x64.ActiveCfg = Debug Dynamic Library|x64
-		{90057FD8-9460-43A6-8CDF-3AAC1C4255E5}.Debug Dynamic Library|x64.Build.0 = Debug Dynamic Library|x64
-		{90057FD8-9460-43A6-8CDF-3AAC1C4255E5}.Release Dynamic Library|x64.ActiveCfg = Release Dynamic Library|x64
-		{90057FD8-9460-43A6-8CDF-3AAC1C4255E5}.Release Dynamic Library|x64.Build.0 = Release Dynamic Library|x64
-		{5A827760-CF8B-408A-99A3-B6C0AD2271E7}.Debug Dynamic Library|x64.ActiveCfg = Debug Dynamic Library|x64
-		{5A827760-CF8B-408A-99A3-B6C0AD2271E7}.Debug Dynamic Library|x64.Build.0 = Debug Dynamic Library|x64
-		{5A827760-CF8B-408A-99A3-B6C0AD2271E7}.Release Dynamic Library|x64.ActiveCfg = Release Dynamic Library|x64
-		{5A827760-CF8B-408A-99A3-B6C0AD2271E7}.Release Dynamic Library|x64.Build.0 = Release Dynamic Library|x64
-	EndGlobalSection
-	GlobalSection(SolutionProperties) = preSolution
-		HideSolutionNode = FALSE
-	EndGlobalSection
-	GlobalSection(ExtensibilityGlobals) = postSolution
-		SolutionGuid = {6C8A8041-10D8-4BEB-B73D-C02BCE62120B}
-	EndGlobalSection
-EndGlobal
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.27703.2026
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "GLFW Example", "GLFW Example.vcxproj", "{5A827760-CF8B-408A-99A3-B6C0AD2271E7}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+		Release|x64 = Release|x64
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{5A827760-CF8B-408A-99A3-B6C0AD2271E7}.Debug|x64.ActiveCfg = Debug|x64
+		{5A827760-CF8B-408A-99A3-B6C0AD2271E7}.Debug|x64.Build.0 = Debug|x64
+		{5A827760-CF8B-408A-99A3-B6C0AD2271E7}.Release|x64.ActiveCfg = Release|x64
+		{5A827760-CF8B-408A-99A3-B6C0AD2271E7}.Release|x64.Build.0 = Release|x64
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {6C8A8041-10D8-4BEB-B73D-C02BCE62120B}
+	EndGlobalSection
+EndGlobal

example/windows_fde/GLFW Example.vcxproj

@@ -1,12 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
-    <ProjectConfiguration Include="Debug Dynamic Library|x64">
-      <Configuration>Debug Dynamic Library</Configuration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
       <Platform>x64</Platform>
     </ProjectConfiguration>
-    <ProjectConfiguration Include="Release Dynamic Library|x64">
-      <Configuration>Release Dynamic Library</Configuration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
       <Platform>x64</Platform>
     </ProjectConfiguration>
   </ItemGroup>
@@ -17,13 +17,13 @@
     <WindowsTargetPlatformVersion>10.0.17134.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug Dynamic Library|x64'" Label="Configuration">
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <PlatformToolset>v141</PlatformToolset>
     <CharacterSet>MultiByte</CharacterSet>
   </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release Dynamic Library|x64'" Label="Configuration">
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <PlatformToolset>v141</PlatformToolset>
@@ -35,54 +35,56 @@
   </ImportGroup>
   <ImportGroup Label="Shared">
   </ImportGroup>
-  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug Dynamic Library|x64'">
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
   </ImportGroup>
-  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release Dynamic Library|x64'">
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
   </ImportGroup>
   <PropertyGroup Label="UserMacros" />
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug Dynamic Library|x64'">
-    <OutDir>$(SolutionDir)bin\$(Platform)\$(Configuration)\$(ProjectName)\</OutDir>
-    <IntDir>$(SolutionDir)bin\intermediates\$(Platform)\$(Configuration)\$(ProjectName)\</IntDir>
-    <IncludePath>$(ProjectDir)..\..\library\windows\dependencies\;$(ProjectDir)..\..\;$(IncludePath);$(ProjectDir)..\..\library\windows\;$(ProjectDir)..\..\library\include\;$(ProjectDir)..\..\library\common\client_wrapper\include\</IncludePath>
-    <LibraryPath>$(ProjectDir)..\..\library\windows\dependencies\GLFW\;$(SolutionDir)bin\$(Platform)\$(Configuration)\GLFW Library\;$(LibraryPath)</LibraryPath>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <OutDir>$(ProjectDir)..\build\windows_fde\$(Platform)\$(Configuration)\$(ProjectName)\</OutDir>
+    <IntDir>$(ProjectDir)..\build\windows_fde\intermediates\$(Platform)\$(Configuration)\$(ProjectName)\</IntDir>
+    <IncludePath>$(ProjectDir)..\..\;$(IncludePath);$(ProjectDir)..\..\out\include\;$(ProjectDir)..\..\out\fde_cpp_wrapper\include</IncludePath>
+    <LibraryPath>$(ProjectDir)..\..\out;$(ProjectDir)..\..\out\gen\glfw\GLFW\;$(LibraryPath)</LibraryPath>
   </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release Dynamic Library|x64'">
-    <OutDir>$(SolutionDir)bin\$(Platform)\$(Configuration)\$(ProjectName)\</OutDir>
-    <IntDir>$(SolutionDir)bin\intermediates\$(Platform)\$(Configuration)\$(ProjectName)\</IntDir>
-    <IncludePath>$(ProjectDir)..\..\library\windows\dependencies\;$(ProjectDir)..\..\;$(IncludePath);$(ProjectDir)..\..\library\windows\;$(ProjectDir)..\..\library\include\;$(ProjectDir)..\..\library\common\client_wrapper\include\</IncludePath>
-    <LibraryPath>$(ProjectDir)..\..\library\windows\dependencies\GLFW\;$(SolutionDir)bin\$(Platform)\$(Configuration)\GLFW Library\;$(LibraryPath)</LibraryPath>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <OutDir>$(ProjectDir)..\build\windows_fde\$(Platform)\$(Configuration)\$(ProjectName)\</OutDir>
+    <IntDir>$(ProjectDir)..\build\windows_fde\intermediates\$(Platform)\$(Configuration)\$(ProjectName)\</IntDir>
+    <IncludePath>$(ProjectDir)..\..\;$(IncludePath);$(ProjectDir)..\..\out\include\;$(ProjectDir)..\..\out\fde_cpp_wrapper\include</IncludePath>
+    <LibraryPath>$(ProjectDir)..\..\out;$(ProjectDir)..\..\out\gen\glfw\GLFW\;$(LibraryPath)</LibraryPath>
   </PropertyGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug Dynamic Library|x64'">
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <ClCompile>
       <WarningLevel>Level3</WarningLevel>
       <Optimization>Disabled</Optimization>
       <SDLCheck>true</SDLCheck>
       <ConformanceMode>true</ConformanceMode>
       <AdditionalIncludeDirectories>
       </AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>_MBCS;%(PreprocessorDefinitions);USE_FDE_TREE_PATHS</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_MBCS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
     </ClCompile>
     <Link>
-      <AdditionalDependencies>flutter_embedder.lib;glfw3.lib;opengl32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>flutter_embedder.dll.lib;glfw3.lib;opengl32.lib;%(AdditionalDependencies)</AdditionalDependencies>
     </Link>
     <PreBuildEvent>
-      <Command>$(ProjectDir)scripts\build_example_app</Command>
-      <Message>Build the example app</Message>
+      <Command>$(ProjectDir)scripts\run_gn_build</Command>
+      <Message>Run the embedder library's GN build</Message>
     </PreBuildEvent>
     <PreLinkEvent>
-      <Command>xcopy /y /d /q "$(OutputPath)..\GLFW Library\flutter_engine.dll" "$(OutputPath)"</Command>
-      <Message>Get the flutter_engine.dll file from GLFW Library bin folder</Message>
+      <Command>
+      </Command>
+      <Message>
+      </Message>
     </PreLinkEvent>
     <PostBuildEvent>
-      <Command>xcopy /y /d /q "$(OutputPath)..\GLFW Library\flutter_embedder.dll" "$(OutputPath)"</Command>
+      <Command>$(ProjectDir)scripts\build_example_app "$(OutputPath)"</Command>
     </PostBuildEvent>
     <PostBuildEvent>
-      <Message>Copy flutter_embedder.dll from library out to example out dir</Message>
+      <Message>Construct a runnable example from the various outputs</Message>
     </PostBuildEvent>
   </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release Dynamic Library|x64'">
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <ClCompile>
       <WarningLevel>Level3</WarningLevel>
       <Optimization>MaxSpeed</Optimization>
@@ -92,39 +94,36 @@
       <ConformanceMode>true</ConformanceMode>
       <AdditionalIncludeDirectories>
       </AdditionalIncludeDirectories>
-      <PreprocessorDefinitions>_MBCS;%(PreprocessorDefinitions);USE_FDE_TREE_PATHS</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_MBCS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
     </ClCompile>
     <Link>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
-      <AdditionalDependencies>flutter_embedder.lib;glfw3.lib;opengl32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>flutter_embedder.dll.lib;glfw3.lib;opengl32.lib;%(AdditionalDependencies)</AdditionalDependencies>
     </Link>
     <PreBuildEvent>
-      <Command>$(ProjectDir)scripts\build_example_app</Command>
-      <Message>Build the example app</Message>
+      <Command>$(ProjectDir)scripts\run_gn_build</Command>
+      <Message>Run the embedder library's GN build</Message>
     </PreBuildEvent>
     <PreLinkEvent>
-      <Command>xcopy /y /d /q "$(OutputPath)..\GLFW Library\flutter_engine.dll" "$(OutputPath)"</Command>
-      <Message>Get the flutter_engine.dll file from GLFW Library bin folder</Message>
+      <Command>
+      </Command>
+      <Message>
+      </Message>
     </PreLinkEvent>
     <PostBuildEvent>
-      <Command>xcopy /y /d /q "$(OutputPath)..\GLFW Library\flutter_embedder.dll" "$(OutputPath)"</Command>
+      <Command>$(ProjectDir)scripts\build_example_app "$(OutputPath)"</Command>
     </PostBuildEvent>
     <PostBuildEvent>
-      <Message>Copy flutter_embedder.dll from library out to example out dir</Message>
+      <Message>Construct a runnable example from the various outputs</Message>
     </PostBuildEvent>
   </ItemDefinitionGroup>
   <ItemGroup>
-    <ClCompile Include="..\..\library\common\client_wrapper\src\engine_method_result.cc" />
-    <ClCompile Include="..\..\library\common\client_wrapper\src\glfw\flutter_window_controller.cc" />
-    <ClCompile Include="..\..\library\common\client_wrapper\src\plugin_handler.cc" />
+    <ClCompile Include="..\..\out\fde_cpp_wrapper\engine_method_result.cc" />
+    <ClCompile Include="..\..\out\fde_cpp_wrapper\flutter_window_controller.cc" />
+    <ClCompile Include="..\..\out\fde_cpp_wrapper\plugin_handler.cc" />
     <ClCompile Include="flutter_embedder_example.cpp" />
   </ItemGroup>
-  <ItemGroup>
-    <ProjectReference Include="..\..\library\windows\GLFW Library.vcxproj">
-      <Project>{90057fd8-9460-43a6-8cdf-3aac1c4255e5}</Project>
-    </ProjectReference>
-  </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>

example/windows_fde/GLFW Example.vcxproj.filters

@@ -21,20 +21,14 @@
     <ClCompile Include="flutter_embedder_example.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
-    <ClCompile Include="..\..\library\common\client_wrapper\src\engine_method_result.cc">
+    <ClCompile Include="..\..\out\fde_cpp_wrapper\engine_method_result.cc">
       <Filter>Source Files\Client Wrapper</Filter>
     </ClCompile>
-    <ClCompile Include="..\..\library\common\client_wrapper\src\glfw\flutter_window_controller.cc">
+    <ClCompile Include="..\..\out\fde_cpp_wrapper\flutter_window_controller.cc">
       <Filter>Source Files\Client Wrapper</Filter>
     </ClCompile>
-    <ClCompile Include="..\..\library\common\client_wrapper\src\json_message_codec.cc">
-      <Filter>Source Files\Client Wrapper</Filter>
-    </ClCompile>
-    <ClCompile Include="..\..\library\common\client_wrapper\src\json_method_codec.cc">
-      <Filter>Source Files\Client Wrapper</Filter>
-    </ClCompile>
-    <ClCompile Include="..\..\library\common\client_wrapper\src\plugin_handler.cc">
+    <ClCompile Include="..\..\out\fde_cpp_wrapper\plugin_handler.cc">
       <Filter>Source Files\Client Wrapper</Filter>
     </ClCompile>
   </ItemGroup>
-</Project>
+</Project>

example/windows_fde/flutter_embedder_example.cpp

@@ -16,13 +16,12 @@
 #include <string>
 #include <vector>
 
-#include "flutter_desktop_embedding/glfw/flutter_window_controller.h"
+#include "flutter_desktop_embedding/flutter_window_controller.h"
 
 int main(int argc, char **argv) {
   // TODO: Make paths relative to the executable so it can be run from anywhere.
   std::string assets_path = "..\\build\\flutter_assets";
-  std::string icu_data_path =
-      "..\\..\\library\\windows\\dependencies\\engine\\icudtl.dat";
+  std::string icu_data_path = "..\\build\\windows_fde\\icudtl.dat";
 
   // Arguments for the Flutter Engine.
   std::vector<std::string> arguments;

example/windows_fde/scripts/build_example_app.bat

@@ -12,4 +12,28 @@
 :: See the License for the specific language governing permissions and
 :: limitations under the License.
 @echo off
-%~dp0..\..\..\tools\build_flutter_assets %~dp0..\..
+
+set FDE_ROOT=%~dp0..\..\..
+set FLUTTER_APP_DIR=%~dp0..\..
+set RUNNER_OUT_DIR=%FLUTTER_APP_DIR%\build\windows_fde
+set TOOLS_DIR=%FDE_ROOT%\tools
+set GN_OUT_DIR=%FDE_ROOT%\out
+for /f "delims=" %%i in ('%TOOLS_DIR%\flutter_location') do set FLUTTER_DIR=%%i
+
+:: Build the Flutter assets.
+call %TOOLS_DIR%\build_flutter_assets %FLUTTER_APP_DIR%
+if %errorlevel% neq 0 exit /b %errorlevel%
+
+:: TODO: Change the paths below, and add the exe, to make a self-contained bundle,
+:: as is done on Linux.
+
+:: Copy the icudtl.dat file from the Flutter tree to the runner directory.
+call xcopy /y /d /q %FLUTTER_DIR%\bin\cache\artifacts\engine\windows-x64\icudtl.dat %RUNNER_OUT_DIR%
+if %errorlevel% neq 0 exit /b %errorlevel%
+
+:: Copy the embedder DLLs to the target location provided to the script.
+call xcopy /y /d /q %GN_OUT_DIR%\flutter_engine.dll %*
+if %errorlevel% neq 0 exit /b %errorlevel%
+call xcopy /y /d /q %GN_OUT_DIR%\flutter_embedder.dll %*
+if %errorlevel% neq 0 exit /b %errorlevel%
+