Imported Upstream version 6.4.0.137

Former-commit-id: 943baa9f16a098c33e129777827f3a9d20da00d6

external/linker/eng/common/dotnet-install.sh

@@ -0,0 +1,49 @@
+#!/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 )"
+
+version='Latest'
+architecture=''
+runtime='dotnet'
+while [[ $# > 0 ]]; do
+  opt="$(echo "$1" | awk '{print tolower($0)}')"
+  case "$opt" in
+    -version|-v)
+      shift
+      version="$1"
+      ;;
+    -architecture|-a)
+      shift
+      architecture="$1"
+      ;;
+    -runtime|-r)
+      shift
+      runtime="$1"
+      ;;
+    *)
+      echo "Invalid argument: $1"
+      usage
+      exit 1
+      ;;
+  esac
+  shift
+done
+
+. "$scriptroot/tools.sh"
+dotnetRoot="$repo_root/.dotnet"
+InstallDotNet $dotnetRoot $version "$architecture" $runtime true || {
+  local exit_code=$?
+  echo "dotnet-install.sh failed (exit code '$exit_code')." >&2
+  ExitWithExitCode $exit_code
+}
+
+ExitWithExitCode 0