windows prebuild

engine/.gitignore

@@ -4,4 +4,5 @@ artifacts
 build
 obj
 *.gen.*
-third_party/skia
+third_party/skia
+libs

engine/Build.bee.cs

@@ -223,12 +223,22 @@ static void DeployIOS()
 
     static void Main()
     {
-        flutterRoot = Environment.GetEnvironmentVariable("FLUTTER_ROOT_PATH");
-        if (string.IsNullOrEmpty(flutterRoot))
+        preBuildLibRoot = Environment.GetEnvironmentVariable("PREBUILD_LIB_ROOT_PATH");
+        if(preBuildLibRoot != null && preBuildLibRoot.Length > 0)
         {
-            flutterRoot = Environment.GetEnvironmentVariable("USERPROFILE") + "/engine/src";
+            cachedHeader = Path.Combine(preBuildLibRoot, "windows");
+            flutterRoot = Path.Combine(preBuildLibRoot, "headerout");
+            skiaRoot = flutterRoot + "/third_party/skia";
+            useLocal = true;
+        }
+        else {
+            flutterRoot = Environment.GetEnvironmentVariable("FLUTTER_ROOT_PATH");
+            if (string.IsNullOrEmpty(flutterRoot))
+            {
+                flutterRoot = Environment.GetEnvironmentVariable("USERPROFILE") + "/engine/src";
+            }
+            skiaRoot = flutterRoot + "/third_party/skia";
         }
-        skiaRoot = flutterRoot + "/third_party/skia";
 
          try
         {
@@ -279,6 +289,9 @@ static void Main()
 
     private static string skiaRoot;
     private static string flutterRoot;
+    private static string preBuildLibRoot;
+    private static string cachedHeader;
+    private static bool useLocal;
     private static bool buildArm64;
 
     //this setting is disabled by default, don't change it unless you know what you are doing
@@ -625,9 +638,13 @@ static NativeProgram SetupLibUIWidgets(UIWidgetsBuildTargetPlatform platform, ou
         np.Sources.Add(c => IsAndroid(c), androidSource);
 
         np.Libraries.Add(c => IsWindows(c), new BagOfObjectFilesLibrary(
+            useLocal? new NPath[]{
+                Path.Combine(preBuildLibRoot, "windows/icudtl.o")
+            } :
             new NPath[]{
                 flutterRoot + "/third_party/icu/flutter/icudtl.o"
-        }));
+            }
+        ));
         np.CompilerSettings().Add(c => c.WithCppLanguageVersion(CppLanguageVersion.Cpp17));
         np.CompilerSettings().Add(c => IsMac(c) || IsIosOrTvos(c), c => c.WithCustomFlags(new []{"-Wno-c++11-narrowing"}));
 
@@ -1299,7 +1316,15 @@ static void SetupDependency(NativeProgram np)
             return IsWindows(c) && c.CodeGen == CodeGen.Debug;
         }, c =>
         {
-            return new PrecompiledLibrary[]
+            return useLocal ? new PrecompiledLibrary[]
+            {
+                new StaticLibrary(Path.Combine(preBuildLibRoot, "windows/debug/txt_lib.lib")),
+                new StaticLibrary(Path.Combine(preBuildLibRoot, "windows/debug/angle_lib.lib")),
+                new StaticLibrary(Path.Combine(preBuildLibRoot, "windows/debug/libEGL_static.lib")),
+                new StaticLibrary(Path.Combine(preBuildLibRoot, "windows/debug/libGLESv2_static.lib")),
+                new SystemLibrary("dxguid.lib"),
+            }
+            : new PrecompiledLibrary[]
             {
                 new StaticLibrary(flutterRoot+"/out/host_debug_unopt/obj/flutter/third_party/txt/txt_lib.lib"),
                 new StaticLibrary(flutterRoot+"/out/host_debug_unopt/obj/third_party/angle/angle_lib.lib"),
@@ -1313,7 +1338,15 @@ static void SetupDependency(NativeProgram np)
             return IsWindows(c) && c.CodeGen == CodeGen.Release;
         }, c =>
         {
-            return new PrecompiledLibrary[]
+            return useLocal ? new PrecompiledLibrary[]
+            {
+                new StaticLibrary(Path.Combine(preBuildLibRoot, "windows/release/txt_lib.lib")),
+                new StaticLibrary(Path.Combine(preBuildLibRoot, "windows/release/angle_lib.lib")),
+                new StaticLibrary(Path.Combine(preBuildLibRoot, "windows/release/libEGL_static.lib")),
+                new StaticLibrary(Path.Combine(preBuildLibRoot, "windows/release/libGLESv2_static.lib")),
+                new SystemLibrary("dxguid.lib"),
+            }
+            : new PrecompiledLibrary[]
             {
                 new StaticLibrary(flutterRoot+"/out/host_release/obj/flutter/third_party/txt/txt_lib.lib"),
                 new StaticLibrary(flutterRoot+"/out/host_release/obj/third_party/angle/angle_lib.lib"),

engine/Scripts/Readme.md

@@ -0,0 +1,13 @@
+## build windows lib using prebuild libs
+1. copy windows prebuilds under `engine/libs`
+1. copy and unzip `headerout.zip` under `engine/libs`
+2. build command
+
+    build release
+    ```
+    .\local_build_win.ps1
+    ```
+    build debug
+    ```
+    .\local_build_win.ps1 -mode debug
+    ```

engine/Scripts/lib_build.py

@@ -21,6 +21,7 @@
 flutter_root_path=""
 visual_studio_path=""
 architecture=""
+localLibPath=False
 
 def get_opts():
     # get intput agrs
@@ -31,12 +32,15 @@ def get_opts():
     global visual_studio_path
     global platform
     global architecture
+    global localLibPath
 
     if len(sys.argv) < 2:
         show_help()
         sys.exit()
-    options, args = getopt.getopt(sys.argv[1:], 'r:p:m:v:eh',["arm64","help"])
+    options, args = getopt.getopt(sys.argv[1:], 'l:r:p:m:v:eh',["arm64","help"])
     for opt, arg in options:
+        if opt == '-l':
+            localLibPath = arg
         if opt == '-r':
             engine_path = arg # set engine_path, depot_tools and flutter engine folder will be put into this path
         elif opt == '-p':
@@ -137,6 +141,9 @@ def set_params():
 def set_env_verb():
     global platform
     global flutter_root_path
+    global localLibPath
+
+    os.environ["PREBUILD_LIB_ROOT_PATH"] = localLibPath
     flutter_root_path = os.getenv('FLUTTER_ROOT_PATH', 'null')
     if flutter_root_path == 'null':
         os.environ["FLUTTER_ROOT_PATH"] = os.path.join(engine_path, "engine","src")
@@ -505,6 +512,8 @@ def show_help():
 
     required parameters:
 
+    -l                build use local prebuild lib
+
     -p                Target platform, available values: android, windows, mac, ios
 
     -m                Build mode, available values: debug, release
@@ -523,16 +532,23 @@ def show_help():
 
 
 def main():
+    global localLibPath
+
     get_opts()
-    engine_path_check()
-    bitcode_conf()
-    set_params()
-    set_env_verb()   
-    get_depot_tools()
-    get_flutter_engine()
-    compile_engine()
-    build_engine()
-    revert_patches()
+    if localLibPath == False:
+        engine_path_check()
+        bitcode_conf()
+        set_params()
+        set_env_verb()
+        get_depot_tools()
+        get_flutter_engine()
+        compile_engine()
+        build_engine()
+        revert_patches()
+    else:
+        bitcode_conf()
+        set_env_verb()   
+        build_engine()
 
 if __name__=="__main__":
     main()

engine/Scripts/local_build_win.ps1

@@ -0,0 +1,8 @@
+param(
+    [Parameter()]
+    [String]$mode= "release"
+)
+$current_dir = Get-Location
+$localLibsPath = Join-Path -Path $current_dir -ChildPath "../libs"
+
+python3 lib_build.py -m $mode -p windows -l $localLibsPath