Auto merge of #24149 - jdm:opt-in-msbuild, r=paulrouget

Add explicit packaging step for UWP apps

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<!-- Reviewable:end -->

etc/taskcluster/decision_task.py

@@ -92,6 +92,7 @@ def main(task_for):
         macos_nightly()
         update_wpt()
         magicleap_nightly()
+        uwp_nightly()
 
 
 # These are disabled in a "real" decision task,
@@ -373,11 +374,29 @@ def android_x86_wpt():
     )
 
 
+def appx_artifact(debug, platforms):
+    return '/'.join([
+        'repo',
+        'support',
+        'hololens',
+        'AppPackages',
+        'ServoApp',
+        'ServoApp_1.0.0.0_%sTest' % 'Debug_' if debug else '',
+        'ServoApp_1.0.0.0_%s%s.appxbundle' % (
+            '_'.join(platforms), '_Debug' if debug else ''
+        ),
+    ])
+
+
 def windows_arm64():
     return (
         windows_build_task("UWP dev build", arch="arm64", package=False)
         .with_treeherder("Windows arm64")
-        .with_script("python mach build --dev --uwp --win-arm64")
+        .with_script(
+            "python mach build --dev --uwp --win-arm64",
+            "python mach package --dev --target aarch64-pc-windows-msvc --uwp=arm64",
+        )
+        .with_artifacts(appx_artifact(debug=True, platforms=['arm64']))
         .find_or_create("build.windows_uwp_arm64_dev." + CONFIG.task_id())
     )
 
@@ -386,11 +405,33 @@ def windows_uwp_x64():
     return (
         windows_build_task("UWP dev build", package=False)
         .with_treeherder("Windows x64")
-        .with_script("mach build --dev --uwp")
+        .with_script(
+            "mach build --dev --uwp",
+            "mach package --dev --uwp=x64",
+        )
+        .with_artifacts(appx_artifact(debug=True, platforms=['x64']))
         .find_or_create("build.windows_uwp_x64_dev." + CONFIG.task_id())
     )
 
 
+def uwp_nightly():
+    return (
+        windows_build_task("Nightly UWP build and upload", package=False)
+        .with_treeherder("Windows x64", "UWP Nightly")
+        .with_features("taskclusterProxy")
+        .with_scopes("secrets:get:project/servo/s3-upload-credentials")
+        .with_script(
+            "mach build --release --uwp",
+            "python mach build --release --uwp --win-arm64",
+            "mach package --release --uwp=x64 --uwp=arm64",
+            "mach upload-nightly uwp --secret-from-taskcluster",
+        )
+        .with_artifacts(appx_artifact(debug=False, platforms=['x64', 'arm64']))
+        .with_max_run_time_minutes(3 * 60)
+        .find_or_create("build.windows_uwp_nightlies." + CONFIG.task_id())
+    )
+
+
 def windows_unit():
     return (
         windows_build_task("Dev build + unit tests")

python/servo/build_commands.py

@@ -249,15 +249,7 @@ class MachCommands(CommandBase):
             env["CXXFLAGS"] += "-mmacosx-version-min=10.10"
 
         if 'windows' in host:
-            vsinstalldir = os.environ.get('VSINSTALLDIR')
-            vcinstalldir = None
-            vs_version = os.environ.get('VisualStudioVersion')
-            if vsinstalldir and vs_version:
-                msbuild_version = get_msbuild_version(vs_version)
-            else:
-                (vsinstalldir, vs_version, msbuild_version) = find_highest_msvc_version()
-            msbuildinstalldir = os.path.join(vsinstalldir, "MSBuild",
-                                             msbuild_version, "Bin")
+            vs_dirs = self.vs_dirs()
 
         if host != target_triple and 'windows' in target_triple:
             if os.environ.get('VisualStudioVersion'):
@@ -265,9 +257,9 @@ class MachCommands(CommandBase):
                       "Please run `python mach build [arguments]` to bypass automatic "
                       "Visual Studio shell.")
                 sys.exit(1)
-            vcinstalldir = os.environ.get("VCINSTALLDIR", "") or os.path.join(vsinstalldir, "VC")
+            vcinstalldir = vs_dirs['vcdir']
             if not os.path.exists(vcinstalldir):
-                print("Can't find Visual C++ %s installation at %s." % (vs_version, vcinstalldir))
+                print("Can't find Visual C++ %s installation at %s." % (vs_dirs['vs_version'], vcinstalldir))
                 sys.exit(1)
 
             env['PKG_CONFIG_ALLOW_CROSS'] = "1"
@@ -695,13 +687,9 @@ class MachCommands(CommandBase):
 
                 # UWP app packaging already bundles all required DLLs for us.
                 print("Packaging MSVC DLLs")
-                if not package_msvc_dlls(servo_exe_dir, target_triple, vcinstalldir, vs_version):
+                if not package_msvc_dlls(servo_exe_dir, target_triple, vs_dirs['vcdir'], vs_dirs['vs_version']):
                     status = 1
 
-                # UWP build hololens
-                if uwp and status == 0:
-                    build_uwp_hololens(target_triple, dev, msbuildinstalldir)
-
             elif sys.platform == "darwin":
                 # On the Mac, set a lovely icon. This makes it easier to pick out the Servo binary in tools
                 # like Instruments.app.
@@ -907,33 +895,6 @@ def package_gstreamer_dlls(env, servo_exe_dir, target, uwp):
     return not missing
 
 
-def build_uwp_hololens(target, dev, msbuild_dir):
-    # determine Visual studio Build Configuration (Debug/Release) and
-    # Build Platform (x64 vs arm64)
-    vs_platforms = {
-        "x86_64": "x64",
-        "i686": "x86",
-        "aarch64": "arm64",
-    }
-    target_arch = target.split('-')[0]
-    vs_platform = vs_platforms[target_arch]
-
-    if dev:
-        Configuration = "Debug"
-    else:
-        Configuration = "Release"
-
-    # execute msbuild
-    # Note: /m implies to use as many CPU cores as possible while building.
-    # msbuild /m /p:project=ServoApp .\support\hololens\servoapp.sln /p:SolutionDir=.\support\hololens
-    # /p:Configuration="Debug" /p:Platform="x64" /property:AppxBundle=Always;AppxBundlePlatforms="x64"
-    check_call([msbuild_dir + "\msbuild.exe", "/m", "/p:project=ServoApp", ".\support\hololens\ServoApp.sln",
-                "/p:SolutionDir=.\support\hololens",
-                "/p:Configuration=" + Configuration,
-                "/p:Platform=" + vs_platform,
-                "/p:AppxBundle=Always;AppxBundlePlatforms=" + vs_platform])
-
-
 def package_msvc_dlls(servo_exe_dir, target, vcinstalldir, vs_version):
     # copy some MSVC DLLs to servo.exe dir
     msvc_redist_dir = None
@@ -1002,34 +963,3 @@ def package_msvc_dlls(servo_exe_dir, target, vcinstalldir, vs_version):
     for msvc_dll in missing:
         print("DLL file `{}` not found!".format(msvc_dll))
     return not missing
-
-
-def get_msbuild_version(vs_version):
-    if vs_version in ("15.0", "14.0"):
-        msbuild_version = vs_version
-    else:
-        msbuild_version = "Current"
-    return msbuild_version
-
-
-def find_highest_msvc_version():
-    editions = ["Enterprise", "Professional", "Community", "BuildTools"]
-    prog_files = os.environ.get("ProgramFiles(x86)")
-    base_vs_path = os.path.join(prog_files, "Microsoft Visual Studio")
-
-    vs_versions = ["2019", "2017"]
-    versions = {
-        ("2019", "vs"): "16.0",
-        ("2017", "vs"): "15.0",
-    }
-
-    for version in vs_versions:
-        for edition in editions:
-            vs_version = versions[version, "vs"]
-            msbuild_version = get_msbuild_version(vs_version)
-
-            vsinstalldir = os.path.join(base_vs_path, version, edition)
-            if os.path.exists(vsinstalldir):
-                return (vsinstalldir, vs_version, msbuild_version)
-    print("Can't find MSBuild.exe installation under %s." % base_vs_path)
-    sys.exit(1)

python/servo/command_base.py

@@ -597,6 +597,23 @@ install them, let us know by filing a bug!")
     def msvc_package_dir(self, package):
         return path.join(self.context.sharedir, "msvc-dependencies", package, msvc_deps[package])
 
+    def vs_dirs(self):
+        assert 'windows' in host_triple()
+        vsinstalldir = os.environ.get('VSINSTALLDIR')
+        vs_version = os.environ.get('VisualStudioVersion')
+        if vsinstalldir and vs_version:
+            msbuild_version = get_msbuild_version(vs_version)
+        else:
+            (vsinstalldir, vs_version, msbuild_version) = find_highest_msvc_version()
+        msbuildinstalldir = os.path.join(vsinstalldir, "MSBuild", msbuild_version, "Bin")
+        vcinstalldir = os.environ.get("VCINSTALLDIR", "") or os.path.join(vsinstalldir, "VC")
+        return {
+            'msbuild': msbuildinstalldir,
+            'vsdir': vsinstalldir,
+            'vs_version': vs_version,
+            'vcdir': vcinstalldir,
+        }
+
     def build_env(self, hosts_file_path=None, target=None, is_build=False, test_unit=False):
         """Return an extended environment dictionary."""
         env = os.environ.copy()
@@ -978,3 +995,34 @@ install them, let us know by filing a bug!")
                     sys.exit(error)
             else:
                 print("Clobber not needed.")
+
+
+def find_highest_msvc_version():
+    editions = ["Enterprise", "Professional", "Community", "BuildTools"]
+    prog_files = os.environ.get("ProgramFiles(x86)")
+    base_vs_path = os.path.join(prog_files, "Microsoft Visual Studio")
+
+    vs_versions = ["2019", "2017"]
+    versions = {
+        ("2019", "vs"): "16.0",
+        ("2017", "vs"): "15.0",
+    }
+
+    for version in vs_versions:
+        for edition in editions:
+            vs_version = versions[version, "vs"]
+            msbuild_version = get_msbuild_version(vs_version)
+
+            vsinstalldir = os.path.join(base_vs_path, version, edition)
+            if os.path.exists(vsinstalldir):
+                return (vsinstalldir, vs_version, msbuild_version)
+    print("Can't find MSBuild.exe installation under %s." % base_vs_path)
+    sys.exit(1)
+
+
+def get_msbuild_version(vs_version):
+    if vs_version in ("15.0", "14.0"):
+        msbuild_version = vs_version
+    else:
+        msbuild_version = "Current"
+    return msbuild_version

python/servo/package_commands.py

@@ -67,6 +67,9 @@ PACKAGES = {
         r'target\release\msi\Servo.exe',
         r'target\release\msi\Servo.zip',
     ],
+    'uwp': [
+        r'support\hololens\AppPackages\ServoApp\ServoApp_1.0.0.0_Test\ServoApp_1.0.0.0_x64_arm64.appxbundle',
+    ],
 }
 
 
@@ -202,8 +205,12 @@ class PackageCommands(CommandBase):
                      default=None,
                      action='store_true',
                      help='Create a local Maven repository')
+    @CommandArgument('--uwp',
+                     default=None,
+                     action='append',
+                     help='Create an APPX package')
     def package(self, release=False, dev=False, android=None, magicleap=None, debug=False,
-                debugger=None, target=None, flavor=None, maven=False):
+                debugger=None, target=None, flavor=None, maven=False, uwp=None):
         if android is None:
             android = self.config["build"]["android"]
         if target and android:
@@ -219,10 +226,16 @@ class PackageCommands(CommandBase):
         if magicleap:
             target = "aarch64-linux-android"
         env = self.build_env(target=target)
-        binary_path = self.get_binary_path(release, dev, target=target, android=android, magicleap=magicleap)
+        binary_path = self.get_binary_path(
+            release, dev, target=target, android=android, magicleap=magicleap,
+            simpleservo=uwp is not None
+        )
         dir_to_root = self.get_top_dir()
         target_dir = path.dirname(binary_path)
-        if magicleap:
+        if uwp:
+            vs_info = self.vs_dirs()
+            build_uwp(uwp, dev, vs_info['msbuild'])
+        elif magicleap:
             if platform.system() not in ["Darwin"]:
                 raise Exception("Magic Leap builds are only supported on macOS.")
             if not env.get("MAGICLEAP_SDK"):
@@ -724,3 +737,32 @@ class PackageCommands(CommandBase):
             update_brew(packages[0], timestamp)
 
         return 0
+
+
+def build_uwp(platforms, dev, msbuild_dir):
+    if any(map(lambda p: p not in ['x64', 'x86', 'arm64'], platforms)):
+        raise Exception("Unsupported appx platforms: " + str(platforms))
+    if dev and len(platforms) > 1:
+        raise Exception("Debug package with multiple architectures is unsupported")
+
+    if dev:
+        Configuration = "Debug"
+    else:
+        Configuration = "Release"
+
+    msbuild = path.join(msbuild_dir, "msbuild.exe")
+    build_file_template = path.join('support', 'hololens', 'package.msbuild')
+    with open(build_file_template) as f:
+        template_contents = f.read()
+        build_file = tempfile.NamedTemporaryFile(delete=False)
+        build_file.write(
+            template_contents
+            .replace("%%BUILD_PLATFORMS%%", ';'.join(platforms))
+            .replace("%%PACKAGE_PLATFORMS%%", '|'.join(platforms))
+            .replace("%%CONFIGURATION%%", Configuration)
+            .replace("%%SOLUTION%%", path.join(os.getcwd(), 'support', 'hololens', 'ServoApp.sln'))
+        )
+        build_file.close()
+        # Generate an appxbundle.
+        subprocess.check_call([msbuild, "/m", build_file.name])
+        os.unlink(build_file.name)

support/hololens/ServoApp.sln

@@ -7,40 +7,24 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ServoApp", "ServoApp\ServoA
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
-		Debug|ARM = Debug|ARM
 		Debug|ARM64 = Debug|ARM64
 		Debug|x64 = Debug|x64
-		Debug|x86 = Debug|x86
-		Release|ARM = Release|ARM
 		Release|ARM64 = Release|ARM64
 		Release|x64 = Release|x64
-		Release|x86 = Release|x86
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{0EAB7D8B-97FD-4C92-8BB2-D5691B3D5ABD}.Debug|ARM.ActiveCfg = Debug|ARM
-		{0EAB7D8B-97FD-4C92-8BB2-D5691B3D5ABD}.Debug|ARM.Build.0 = Debug|ARM
-		{0EAB7D8B-97FD-4C92-8BB2-D5691B3D5ABD}.Debug|ARM.Deploy.0 = Debug|ARM
 		{0EAB7D8B-97FD-4C92-8BB2-D5691B3D5ABD}.Debug|ARM64.ActiveCfg = Debug|ARM64
 		{0EAB7D8B-97FD-4C92-8BB2-D5691B3D5ABD}.Debug|ARM64.Build.0 = Debug|ARM64
 		{0EAB7D8B-97FD-4C92-8BB2-D5691B3D5ABD}.Debug|ARM64.Deploy.0 = Debug|ARM64
 		{0EAB7D8B-97FD-4C92-8BB2-D5691B3D5ABD}.Debug|x64.ActiveCfg = Debug|x64
 		{0EAB7D8B-97FD-4C92-8BB2-D5691B3D5ABD}.Debug|x64.Build.0 = Debug|x64
 		{0EAB7D8B-97FD-4C92-8BB2-D5691B3D5ABD}.Debug|x64.Deploy.0 = Debug|x64
-		{0EAB7D8B-97FD-4C92-8BB2-D5691B3D5ABD}.Debug|x86.ActiveCfg = Debug|Win32
-		{0EAB7D8B-97FD-4C92-8BB2-D5691B3D5ABD}.Debug|x86.Build.0 = Debug|Win32
-		{0EAB7D8B-97FD-4C92-8BB2-D5691B3D5ABD}.Debug|x86.Deploy.0 = Debug|Win32
-		{0EAB7D8B-97FD-4C92-8BB2-D5691B3D5ABD}.Release|ARM.ActiveCfg = Release|ARM
-		{0EAB7D8B-97FD-4C92-8BB2-D5691B3D5ABD}.Release|ARM.Build.0 = Release|ARM
-		{0EAB7D8B-97FD-4C92-8BB2-D5691B3D5ABD}.Release|ARM.Deploy.0 = Release|ARM
 		{0EAB7D8B-97FD-4C92-8BB2-D5691B3D5ABD}.Release|ARM64.ActiveCfg = Release|ARM64
 		{0EAB7D8B-97FD-4C92-8BB2-D5691B3D5ABD}.Release|ARM64.Build.0 = Release|ARM64
 		{0EAB7D8B-97FD-4C92-8BB2-D5691B3D5ABD}.Release|ARM64.Deploy.0 = Release|ARM64
 		{0EAB7D8B-97FD-4C92-8BB2-D5691B3D5ABD}.Release|x64.ActiveCfg = Release|x64
 		{0EAB7D8B-97FD-4C92-8BB2-D5691B3D5ABD}.Release|x64.Build.0 = Release|x64
 		{0EAB7D8B-97FD-4C92-8BB2-D5691B3D5ABD}.Release|x64.Deploy.0 = Release|x64
-		{0EAB7D8B-97FD-4C92-8BB2-D5691B3D5ABD}.Release|x86.ActiveCfg = Release|Win32
-		{0EAB7D8B-97FD-4C92-8BB2-D5691B3D5ABD}.Release|x86.Build.0 = Release|Win32
-		{0EAB7D8B-97FD-4C92-8BB2-D5691B3D5ABD}.Release|x86.Deploy.0 = Release|Win32
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

support/hololens/ServoApp/ServoApp.vcxproj

@@ -18,34 +18,18 @@
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <ItemGroup Label="ProjectConfigurations">
-    <ProjectConfiguration Include="Debug|ARM">
-      <Configuration>Debug</Configuration>
-      <Platform>ARM</Platform>
-    </ProjectConfiguration>
     <ProjectConfiguration Include="Debug|ARM64">
       <Configuration>Debug</Configuration>
       <Platform>ARM64</Platform>
     </ProjectConfiguration>
-    <ProjectConfiguration Include="Debug|Win32">
-      <Configuration>Debug</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
     <ProjectConfiguration Include="Debug|x64">
       <Configuration>Debug</Configuration>
       <Platform>x64</Platform>
     </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|ARM">
-      <Configuration>Release</Configuration>
-      <Platform>ARM</Platform>
-    </ProjectConfiguration>
     <ProjectConfiguration Include="Release|ARM64">
       <Configuration>Release</Configuration>
       <Platform>ARM64</Platform>
     </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|Win32">
-      <Configuration>Release</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
     <ProjectConfiguration Include="Release|x64">
       <Configuration>Release</Configuration>
       <Platform>x64</Platform>
@@ -103,19 +87,14 @@
   <ItemDefinitionGroup Condition="'$(Configuration)'=='Debug'">
     <ClCompile>
       <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Debug|ARM'">$(ProjectDir);$(GeneratedFilesDir);$(IntDir);%(AdditionalIncludeDirectories);$(ProjectDir)\..\..\..\target\debug\</AdditionalIncludeDirectories>
       <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">$(ProjectDir);$(GeneratedFilesDir);$(IntDir);%(AdditionalIncludeDirectories);$(ProjectDir)\..\..\..\target\aarch64-pc-windows-msvc\debug\</AdditionalIncludeDirectories>
-      <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">$(ProjectDir);$(GeneratedFilesDir);$(IntDir);%(AdditionalIncludeDirectories);$(ProjectDir)\..\..\..\target\debug\</AdditionalIncludeDirectories>
       <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(ProjectDir);$(GeneratedFilesDir);$(IntDir);%(AdditionalIncludeDirectories);$(ProjectDir)\..\..\..\target\debug\</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
-      <AdditionalDependencies Condition="'$(Configuration)|$(Platform)'=='Debug|ARM'">WindowsApp.lib;%(AdditionalDependencies);simpleservo.dll.lib</AdditionalDependencies>
       <AdditionalDependencies Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">WindowsApp.lib;%(AdditionalDependencies);simpleservo.dll.lib</AdditionalDependencies>
       <AdditionalLibraryDirectories Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">$(ProjectDir)\..\..\..\target\aarch64-pc-windows-msvc\debug\</AdditionalLibraryDirectories>
     </Link>
-    <Link>
-      <AdditionalDependencies Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">WindowsApp.lib;%(AdditionalDependencies);simpleservo.dll.lib</AdditionalDependencies>
-    </Link>
+    <Link />
     <Link>
       <AdditionalDependencies Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">WindowsApp.lib;%(AdditionalDependencies);simpleservo.dll.lib</AdditionalDependencies>
       <AdditionalLibraryDirectories Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(ProjectDir)\..\..\..\target\debug\</AdditionalLibraryDirectories>
@@ -124,19 +103,14 @@
   <ItemDefinitionGroup Condition="'$(Configuration)'=='Release'">
     <ClCompile>
       <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Release|ARM'">$(ProjectDir);$(GeneratedFilesDir);$(IntDir);%(AdditionalIncludeDirectories);$(ProjectDir)\..\..\..\target\release</AdditionalIncludeDirectories>
       <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">$(ProjectDir);$(GeneratedFilesDir);$(IntDir);%(AdditionalIncludeDirectories);$(ProjectDir)\..\..\..\target\aarch64-pc-windows-msvc\release</AdditionalIncludeDirectories>
-      <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">$(ProjectDir);$(GeneratedFilesDir);$(IntDir);%(AdditionalIncludeDirectories);$(ProjectDir)\..\..\..\target\release</AdditionalIncludeDirectories>
       <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(ProjectDir);$(GeneratedFilesDir);$(IntDir);%(AdditionalIncludeDirectories);$(ProjectDir)\..\..\..\target\release</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
-      <AdditionalDependencies Condition="'$(Configuration)|$(Platform)'=='Release|ARM'">WindowsApp.lib;%(AdditionalDependencies);simpleservo.dll.lib</AdditionalDependencies>
       <AdditionalDependencies Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">WindowsApp.lib;%(AdditionalDependencies);simpleservo.dll.lib</AdditionalDependencies>
       <AdditionalLibraryDirectories Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">$(ProjectDir)\..\..\..\target\aarch64-pc-windows-msvc\release\</AdditionalLibraryDirectories>
     </Link>
-    <Link>
-      <AdditionalDependencies Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">WindowsApp.lib;%(AdditionalDependencies);simpleservo.dll.lib</AdditionalDependencies>
-    </Link>
+    <Link />
     <Link>
       <AdditionalDependencies Condition="'$(Configuration)|$(Platform)'=='Release|x64'">WindowsApp.lib;%(AdditionalDependencies);simpleservo.dll.lib</AdditionalDependencies>
       <AdditionalLibraryDirectories Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(ProjectDir)\..\..\..\target\release\</AdditionalLibraryDirectories>

support/hololens/package.msbuild

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" DefaultTargets="FullRebuild">
+  <Target Name="FullRebuild">
+    <ItemGroup>
+      <Configurations Include="%%CONFIGURATION%%"/>
+      <Platforms Include="%%BUILD_PLATFORMS%%"/>
+      <ConfigAndPlatform Include="@(Configurations)">
+        <Platform>%(Platforms.Identity)</Platform>
+      </ConfigAndPlatform>
+    </ItemGroup>
+    <MSBuild Projects="%%SOLUTION%%" Targets="Build"
+             Properties="Configuration=%(ConfigAndPlatform.Identity);Platform=%(ConfigAndPlatform.Platform);AppxBundle=Always;AppxBundlePlatforms=%%PACKAGE_PLATFORMS%%;UseSubFolderForOutputDirDuringMultiPlatformBuild=false"/>
+  </Target>
+</Project>