Fix build script

This commit migrates preview dotnet to latest msbuild.
Note that this script depends on Visual Studio 2017 because dotnet CLI does not
support .NET 3.5 and Xamarin yet.
In addition this script assumes that build env has path to latest msbuild since
it is hard to determine the path of msbuild due to it contains Visual Studio
edition.

Author: yfakariya

build/Build.ps1

@@ -1,18 +1,40 @@
 param([Switch]$Rebuild)
 
+[string]$msbuild = "msbuild"
+
 if ( $env:APPVEYOR -eq "True" )
 {
-	[string]$builder = "MSBuild.exe"
-	[string]$winBuilder = "MSBuild.exe"
-	[string]$nuget = "nuget"
-	[string]$nugetVerbosity = "quiet"
-	[string]$dotnetVerbosity = "Warning"
 
 	# AppVeyor should have right MSBuild and dotnet-cli...
 	# Android SDK should be installed in init and ANDROID_HOME should be initialized before this script.
 }
 else
 {
+	[string]$VSMSBuildExtensionsPath = $null
+	
+	$msbuildCandidates = @(
+		"${env:ProgramFiles(x86)}\Microsoft Visual Studio\2017\Community\MSBuild\15.0\bin\MSBuild.exe",
+		"${env:ProgramFiles(x86)}\Microsoft Visual Studio\2017\Enterprise\MSBuild\15.0\bin\MSBuild.exe",
+		"${env:ProgramFiles(x86)}\Microsoft Visual Studio\2017\Professional\MSBuild\15.0\bin\MSBuild.exe",
+		"${env:ProgramFiles}\Microsoft Visual Studio\2017\Community\MSBuild\15.0\bin\MSBuild.exe",
+		"${env:ProgramFiles}\Microsoft Visual Studio\2017\Enterprise\MSBuild\15.0\bin\MSBuild.exe",
+		"${env:ProgramFiles}\Microsoft Visual Studio\2017\Professional\MSBuild\15.0\bin\MSBuild.exe"
+	)
+	foreach ( $msbuildCandidate in $msbuildCandidates )
+	{
+		if ( ( Test-Path $msbuildCandidate ) )
+		{
+			$VSMSBuildExtensionsPath = [IO.Path]::GetFullPath( [IO.Path]::GetDirectoryName( $msbuildCandidate ) + "\..\..\" )
+			break;
+		}
+	}
+	
+	if ( $VSMSBuildExtensionsPath -eq $null )
+	{
+		Write-Error "Failed to locate MSBuild.exe which can build .NET Core and .NET 3.5. VS2017 is required."
+		exit 1
+	}
+	
 	# Ensure Android SDK for API level 10 is installed.
 	# Thanks to https://github.com/googlesamples/android-ndk/pull/80
 
@@ -29,27 +51,6 @@ else
 	{
 		./UpdateAndroidSdk.cmd
 	}
-	[string]$builder = "${env:ProgramFiles(x86)}\MSBuild\14.0\Bin\MSBuild.exe"
-	[string]$winBuilder = "${env:ProgramFiles(x86)}\MSBuild\14.0\Bin\MSBuild.exe"
-	[string]$nuget = "../.nuget/nuget.exe"
-	[string]$nugetVerbosity = "normal"
-	[string]$dotnetVerbosity = "Information"
-
-	if ( !( Test-Path( "$winBuilder" ) ) )
-	{
-		$winBuilder = "${env:ProgramFiles}\MSBuild\14.0\Bin\MSBuild.exe"
-	}
-	if ( !( Test-Path( "$winBuilder" ) ) )
-	{
-		Write-Error "MSBuild v14 is required."
-		exit 1
-	}
-
-	if ( !( Test-Path( "${env:ProgramFiles}\dotnet\dotnet.exe" ) ) )
-	{
-		Write-Error "DotNet CLI is required."
-		exit 1
-	}
 }
 
 [string]$buildConfig = 'Release'
@@ -62,7 +63,6 @@ if ( ![String]::IsNullOrWhitespace( $env:CONFIGURATION ) )
 [string]$slnCompat = '../MsgPack.compats.sln'
 [string]$slnWindows = '../MsgPack.Windows.sln'
 [string]$slnXamarin = '../MsgPack.Xamarin.sln'
-[string]$projCoreClr = "../src/Msgpack.CoreClr"
 
 $buildOptions = @( '/v:minimal' )
 if( $Rebuild )
@@ -71,6 +71,7 @@ if( $Rebuild )
 }
 
 $buildOptions += "/p:Configuration=${buildConfig}"
+$restoreOptions = "/v:minimal"
 
 # Unity
 if ( !( Test-Path "./MsgPack-CLI" ) )
@@ -102,96 +103,53 @@ if ( !( Test-Path "./MsgPack-CLI/mpu" ) )
 }
 
 # build
-& $nuget restore $sln -Verbosity $nugetVerbosity
+& $msbuild /t:restore $sln $restoreOptions
 if ( $LastExitCode -ne 0 )
 {
 	Write-Error "Failed to restore $sln"
 	exit $LastExitCode
 }
 
-& $builder $sln $buildOptions
+& $msbuild $sln $buildOptions
 if ( $LastExitCode -ne 0 )
 {
 	Write-Error "Failed to build $sln"
 	exit $LastExitCode
 }
 
-& $nuget restore $slnCompat -Verbosity $nugetVerbosity
+& $msbuild /t:restore $slnCompat $restoreOptions
 if ( $LastExitCode -ne 0 )
 {
 	Write-Error "Failed to restore $slnCompat"
 	exit $LastExitCode
 }
 
-& $builder $slnCompat $buildOptions
+& $msbuild $slnCompat $buildOptions
 if ( $LastExitCode -ne 0 )
 {
 	Write-Error "Failed to build $slnCompat"
 	exit $LastExitCode
 }
 
-& $nuget restore $slnWindows -Verbosity $nugetVerbosity
+& $msbuild /t:restore $slnWindows $restoreOptions
 if ( $LastExitCode -ne 0 )
 {
 	Write-Error "Failed to restore $slnWindows"
 	exit $LastExitCode
 }
 
-& $winBuilder $slnWindows $buildOptions
+& $msbuild $slnWindows $buildOptions
 if ( $LastExitCode -ne 0 )
 {
 	Write-Error "Failed to build $slnWindows"
 	exit $LastExitCode
 }
 
-& $nuget restore $slnXamarin -Verbosity $nugetVerbosity
-if ( $LastExitCode -ne 0 )
-{
-	Write-Error "Failed to restore $slnXamarin"
-	exit $LastExitCode
-}
-
-& $builder $slnXamarin $buildOptions
-if ( $LastExitCode -ne 0 )
-{
-	Write-Error "Failed to build $slnXamarin"
-	exit $LastExitCode
-}
-
-dotnet restore $projCoreClr
-if ( $LastExitCode -ne 0 )
-{
-	Write-Error "Failed to restore $projNetStandard11"
-	exit $LastExitCode
-}
-
-$netstandardBaseCommandLine = @("build", "$projCoreClr", "-c", "$buildConfig")
-$netstandard1_1CommandLine = $netstandardBaseCommandLine + @("-f", "netstandard1.1")
-$netstandard1_3CommandLine = $netstandardBaseCommandLine + @("-f", "netstandard1.3")
-if ( $buildConfig -eq 'Release' )
-{
-	$netstandard1_1CommandLine += @("-o", "../bin/netstandard1.1")
-	$netstandard1_3CommandLine += @("-o", "../bin/netstandard1.3")
-}
-
-& "dotnet" $netstandard1_1CommandLine
-if ( $LastExitCode -ne 0 )
-{
-	Write-Error "Failed to build netstd1.1. $netstandard1_1CommandLine"
-	exit $LastExitCode
-}
-
-& "dotnet" $netstandard1_3CommandLine
-if ( $LastExitCode -ne 0 )
-{
-	Write-Error "Failed to build netstd1.3. $netstandard1_3CommandLine"
-	exit $LastExitCode
-}
-
 if ( $buildConfig -eq 'Release' )
 {
-	& $nuget pack ../MsgPack.nuspec -Symbols -Version $env:PackageVersion -OutputDirectory ../dist
+	& $msbuild ../src/MsgPack/MsgPack.csproj /t:pack /p:Configuration=$buildConfig /p:NuspecProperties=version=$env:PackageVersion
 
+	Move-Item ../bin/*.nupkg ../dist/
 	Copy-Item ../bin/* ./MsgPack-CLI/ -Recurse -Exclude @("*.vshost.*")
 	Copy-Item ../tools/mpu/bin/* ./MsgPack-CLI/mpu/ -Recurse -Exclude @("*.vshost.*")
 	[Reflection.Assembly]::LoadWithPartialName( "System.IO.Compression.FileSystem" ) | Out-Null