Move dotnet.cmd/sh helper scripts into the repo root (#672)

* Move dotnet helper scripts to repo root

* Don't swallow InitializeDotNetCli output

* Use temporary file to store sdk location

To avoid a nested process chain in which the inner process then invokes
the host, we instead create a temporary file to store the sdk location.

Author: ViktorHofer

dotnet.cmd

@@ -0,0 +1,22 @@
+@echo off
+
+powershell -ExecutionPolicy ByPass -NoProfile -Command "& { . '%~dp0eng\common\tools.ps1'; InitializeDotNetCli $true $true }"
+
+if NOT [%ERRORLEVEL%] == [0] (
+  echo Failed to install or invoke dotnet... 1>&2
+  exit /b %ERRORLEVEL%
+)
+
+set /p dotnetPath=<%~dp0artifacts\toolset\sdk.txt
+
+:: Clear the 'Platform' env variable for this session, as it's a per-project setting within the build, and
+:: misleading value (such as 'MCD' in HP PCs) may lead to build breakage (issue: #69).
+set Platform=
+
+:: Don't resolve runtime, shared framework, or SDK from other locations to ensure build determinism
+set DOTNET_MULTILEVEL_LOOKUP=0
+
+:: Disable first run since we want to control all package sources
+set DOTNET_SKIP_FIRST_TIME_EXPERIENCE=1
+
+call "%dotnetPath%\dotnet.exe" %*

dotnet.sh

@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+
+source="${BASH_SOURCE[0]}"
+# resolve $SOURCE until the file is no longer a symlink
+while [[ -h $source ]]; do
+  scriptroot="$( cd -P "$( dirname "$source" )" && pwd )"
+  source="$(readlink "$source")"
+
+  # if $source was a relative symlink, we need to resolve it relative to the path where the
+  # symlink file was located
+  [[ $source != /* ]] && source="$scriptroot/$source"
+done
+scriptroot="$( cd -P "$( dirname "$source" )" && pwd )"
+
+# Don't resolve runtime, shared framework, or SDK from other locations to ensure build determinism
+export DOTNET_MULTILEVEL_LOOKUP=0
+
+# Disable first run since we want to control all package sources
+export DOTNET_SKIP_FIRST_TIME_EXPERIENCE=1
+
+source $scriptroot/eng/common/tools.sh
+
+InitializeDotNetCli true # Install
+__dotnetDir=${_InitializeDotNetCli}
+
+dotnetPath=${__dotnetDir}/dotnet
+${dotnetPath} "$@"

eng/common/tools.ps1

@@ -98,7 +98,7 @@ function Exec-Process([string]$command, [string]$commandArgs) {
   }
 }
 
-function InitializeDotNetCli([bool]$install) {
+function InitializeDotNetCli([bool]$install, [bool]$createSdkLocationFile) {
   if (Test-Path variable:global:_DotNetInstallDir) {
     return $global:_DotNetInstallDir
   }
@@ -146,6 +146,22 @@ function InitializeDotNetCli([bool]$install) {
     }
 
     $env:DOTNET_INSTALL_DIR = $dotnetRoot
+
+    if ($createSdkLocationFile) {
+      # Create a temporary file under the toolset dir and rename it to sdk.txt to avoid races.
+      do { 
+        $sdkCacheFileTemp = Join-Path $ToolsetDir $([System.IO.Path]::GetRandomFileName())
+      } 
+      until (!(Test-Path $sdkCacheFileTemp))
+      Set-Content -Path $sdkCacheFileTemp -Value $dotnetRoot
+
+      try {
+        Rename-Item -Force -Path $sdkCacheFileTemp 'sdk.txt'
+      } catch {
+        # Somebody beat us
+        Remove-Item -Path $sdkCacheFileTemp
+      }
+    }
   }
 
   # Add dotnet to PATH. This prevents any bare invocation of dotnet in custom

eng/update-dependencies.cmd

@@ -531,7 +531,7 @@ set __MsbuildErr=/flp2:ErrorsOnly;LogFile="%__BuildErr%"
 set __Logging=!__MsbuildLog! !__MsbuildWrn! !__MsbuildErr!
 
 REM Build wrappers using the local SDK's msbuild. As we move to arcade, the other builds should be moved away from run.exe as well.
-call "%__ProjectDir%\dotnet.cmd" msbuild %__ProjectDir%\tests\src\runtest.proj /nodereuse:false /p:BuildWrappers=true !__Logging! %__msbuildArgs% %TargetsWindowsMsbuildArg% %__SkipFXRestoreArg% %__UnprocessedBuildArgs%
+call "%__RepoRootDir%\dotnet.cmd" msbuild %__ProjectDir%\tests\src\runtest.proj /nodereuse:false /p:BuildWrappers=true !__Logging! %__msbuildArgs% %TargetsWindowsMsbuildArg% %__SkipFXRestoreArg% %__UnprocessedBuildArgs%
 if errorlevel 1 (
     echo %__ErrMsgPrefix%%__MsgPrefix%Error: XUnit wrapper build failed. Refer to the build log files for details:
     echo     %__BuildLog%

src/coreclr/build-test.cmd

@@ -663,7 +663,7 @@ __CrossBuild=0
 __DistroRid=""
 __DoCrossgen=0
 __DoCrossgen2=0
-__DotNetCli="$__ProjectDir/dotnet.sh"
+__DotNetCli="$__RepoRootDir/dotnet.sh"
 __GccBuild=0
 __GccMajorVersion=0
 __GccMinorVersion=0

src/coreclr/build-test.sh

@@ -656,7 +656,7 @@ if %__BuildCoreLib% EQU 1 (
 
         if "%__BuildManagedTools%" == "1" (
             echo %__MsgPrefix%Publishing crossgen2...
-            call %__ProjectDir%\dotnet.cmd publish --self-contained -r win-%__BuildArch% -c %__BuildType% -o "%__BinDir%\crossgen2" "%__ProjectDir%\src\tools\crossgen2\crossgen2\crossgen2.csproj" /p:BuildArch=%__BuildArch%
+            call %__RepoRootDir%\dotnet.cmd publish --self-contained -r win-%__BuildArch% -c %__BuildType% -o "%__BinDir%\crossgen2" "%__ProjectDir%\src\tools\crossgen2\crossgen2\crossgen2.csproj" /p:BuildArch=%__BuildArch%
 
             if not !errorlevel! == 0 (
                 echo %__ErrMsgPrefix%%__MsgPrefix%Error: Failed to build crossgen2.
@@ -706,7 +706,7 @@ if %__BuildCoreLib% EQU 1 (
                   )
                 )
 
-                set IBCMergeCommand=%__ProjectDir%\dotnet.cmd --roll-forward-on-no-candidate-fx 2 "!IbcMergePath!"
+                set IBCMergeCommand=%__RepoRootDir%\dotnet.cmd --roll-forward-on-no-candidate-fx 2 "!IbcMergePath!"
 
                 REM Merge the optimization data into the source DLL
                 set NEXTCMD=!IBCMergeCommand! -q -f -delete -mo "!InputAssemblyFile!" !RawOptimizationDataFile!

src/coreclr/build.cmd

@@ -392,7 +392,7 @@ build_CoreLib()
 
     if [[ "$__BuildManagedTools" -eq "1" ]]; then
         echo "Publishing crossgen2 for $__DistroRid"
-        "$__ProjectRoot/dotnet.sh" publish --self-contained -r $__DistroRid -c $__BuildType -o "$__BinDir/crossgen2" "$__ProjectRoot/src/tools/crossgen2/crossgen2/crossgen2.csproj" /p:BuildArch=$__BuildArch
+        "$__RepoRootDir/dotnet.sh" publish --self-contained -r $__DistroRid -c $__BuildType -o "$__BinDir/crossgen2" "$__ProjectRoot/src/tools/crossgen2/crossgen2/crossgen2.csproj" /p:BuildArch=$__BuildArch
 
         local exit_code=$?
         if [ $exit_code != 0 ]; then