Remove Win/UWP support

starboard/BUILD.gn

@@ -51,12 +51,8 @@ group("gn_all") {
     deps += [
       "//starboard/shared/starboard/player/filter/testing:player_filter_tests($starboard_toolchain)",
       "//starboard/shared/starboard/player/filter/testing:player_filter_tests_install($starboard_toolchain)",
+      "//starboard/shared/starboard/player/filter/tools:audio_dmp_player($starboard_toolchain)",
     ]
-
-    # TODO: b/296715826 - Fix build error for windows modular builds.
-    if (!(sb_is_modular && host_os == "win")) {
-      deps += [ "//starboard/shared/starboard/player/filter/tools:audio_dmp_player($starboard_toolchain)" ]
-    }
   }
 
   if (sb_enable_benchmark) {
@@ -141,7 +137,7 @@ group("starboard_group") {
     }
 
     # TODO: b/295702296 Fix libunwind for modular builds.
-    if (sb_is_evergreen || host_os == "win") {
+    if (sb_is_evergreen) {
       public_deps += [ "//third_party/llvm-project/libunwind:unwind" ]
     }
   } else {

starboard/build/config/BUILD.gn

@@ -133,13 +133,6 @@ config("host") {
           ldflags += [ "-m32" ]
         }
       }
-    } else if (is_win) {
-      # A few flags to mute MSVC compiler errors that does not appear on Linux.
-      cflags = [
-        "/wd4267",  # Possible loss of precision from size_t to a smaller type.
-        "/wd4715",  # Not all control paths return value.
-      ]
-      configs = [ ":win_cpp17_config" ]
     } else if (is_apple) {
       configs = [ ":apple_cpp17_config" ]
     }
@@ -269,9 +262,6 @@ config("no_pedantic_warnings") {
 }
 
 config("warnings_as_errors") {
-  if (is_win && treat_warnings_as_errors) {
-    cflags = [ "/WX" ]
-  }
 }
 
 # This config is defined here and added as a default config so that the flags
@@ -293,9 +283,6 @@ config("default_cpp_standard") {
   if (current_toolchain == default_toolchain) {
     if (sb_is_modular || is_android) {
       configs = [ ":modular_cpp17_config" ]
-    } else if (host_os == "win") {
-      # These flags apply to non-modular windows platforms which includes win32, xb1.
-      configs = [ ":win_cpp17_config" ]
     } else if (is_linux) {
       configs = [ ":linux_non_modular_cpp17_config" ]
     } else if (is_apple) {
@@ -312,9 +299,6 @@ config("cpp20_supported_config") {
   if (current_toolchain == default_toolchain) {
     if (sb_is_modular || is_android) {
       configs = [ ":modular_cpp20_config" ]
-    } else if (host_os == "win") {
-      # These flags apply to non-modular windows platforms which includes win32, xb1.
-      configs = [ ":win_cpp20_config" ]
     } else if (is_linux) {
       configs = [ ":linux_non_modular_cpp20_config" ]
     } else if (is_apple) {
@@ -327,14 +311,6 @@ config("cpp20_supported_config") {
   }
 }
 
-config("win_cpp17_config") {
-  cflags = [ "/std:c++17" ]
-}
-
-config("win_cpp20_config") {
-  cflags = [ "/std:c++20" ]
-}
-
 config("apple_cpp17_config") {
   cflags_cc = [ "-std=gnu++17" ]
   cflags_objcc = [ "-std=gnu++17" ]

starboard/build/config/BUILDCONFIG.gn

@@ -184,10 +184,6 @@ if (is_qa || is_gold || sb_use_no_rtti) {
   default_compiler_configs += [ "//build/config/compiler:no_rtti" ]
 }
 
-if (is_win) {
-  default_compiler_configs += [ "//build/config/win:lean_and_mean" ]
-}
-
 if (is_native_target_build) {
   default_compiler_configs += [ "//starboard/build/config:native_target" ]
 }
@@ -538,11 +534,9 @@ template("shared_library") {
       forward_variables_from(invoker, [ "testonly" ])
       deps = [
         ":${actual_target_name}_loader($starboard_toolchain)",
+        ":${actual_target_name}_loader_copy($starboard_toolchain)",
         ":${actual_target_name}_loader_install($starboard_toolchain)",
       ]
-      if (host_os != "win") {
-        deps += [ ":${actual_target_name}_loader_copy($starboard_toolchain)" ]
-      }
     }
     if (current_toolchain == starboard_toolchain) {
       executable("${actual_target_name}_loader") {
@@ -588,13 +582,11 @@ template("shared_library") {
           deps += [ "//starboard:starboard_install($starboard_toolchain)" ]
         }
       }
-      if (host_os != "win") {
-        copy("${actual_target_name}_loader_copy") {
-          forward_variables_from(invoker, [ "testonly" ])
-          sources = [ "$root_out_dir/${actual_target_name}_loader" ]
-          outputs = [ "$root_build_dir/${actual_target_name}_loader" ]
-          deps = [ ":${actual_target_name}_loader" ]
-        }
+      copy("${actual_target_name}_loader_copy") {
+        forward_variables_from(invoker, [ "testonly" ])
+        sources = [ "$root_out_dir/${actual_target_name}_loader" ]
+        outputs = [ "$root_build_dir/${actual_target_name}_loader" ]
+        deps = [ ":${actual_target_name}_loader" ]
       }
     }
   }

starboard/build/config/modular/BUILD.gn

@@ -28,10 +28,7 @@ config("modular") {
     "-isystem" + rebase_path("//third_party/musl/arch/generic", root_build_dir),
   ]
 
-  if (host_os != "win") {
-    # Causes error on windows. clang++: error: unsupported option '-fPIC' for target 'x86_64-pc-windows-msvc'
-    cflags += [ "-fPIC" ]
-  }
+  cflags += [ "-fPIC" ]
 
   cflags_cc = [ "-nostdinc++" ]
 

starboard/build/config/starboard_target_type.gni

@@ -39,9 +39,7 @@ template("starboard_platform_target") {
     }
     if (target_type == "shared_library") {
       build_loader = false
-      if (host_os != "win") {
-        output_extension = starboard_shared_library_extension
-      }
+      output_extension = starboard_shared_library_extension
     }
     public_deps = [
       "//starboard/client_porting/cwrappers",