DNM: enable verbosity on Foundation build for debugging

Author: compnerd

utils/build.ps1

@@ -1426,7 +1426,7 @@ function Build-CMakeProject {
       } else {
         Add-KeyValueIfNew $Defines CMAKE_Swift_COMPILER (Join-Path -Path (Get-PinnedToolchainToolsDir) -ChildPath  "swiftc.exe")
       }
-      Add-KeyValueIfNew $Defines CMAKE_Swift_COMPILER_USE_OLD_DRIVER "YES"
+
       if (-not ($Platform.OS -eq [OS]::Windows)) {
         Add-KeyValueIfNew $Defines CMAKE_Swift_COMPILER_WORKS = "YES"
       }
@@ -2614,7 +2614,8 @@ function Build-Foundation {
       CMAKE_FIND_PACKAGE_PREFER_CONFIG = "YES";
       CMAKE_NINJA_FORCE_RESPONSE_FILE = "YES";
       CMAKE_STATIC_LIBRARY_PREFIX_Swift = "lib";
-      CMAKE_Swift_FLAGS = $SwiftFlags;
+      # FIXME(compnerd) workaround undiagnosed crash during the build
+      CMAKE_Swift_FLAGS = $SwiftFlags + @("-v", "-no-whole-module-optimization");
       ENABLE_TESTING = "NO";
       FOUNDATION_BUILD_TOOLS = if ($Platform.OS -eq [OS]::Windows) { "YES" } else { "NO" };
       CURL_DIR = "$BinaryCache\$($Platform.Triple)\usr\lib\cmake\CURL";