diff --git a/Sources/SwiftBuildSupport/SwiftBuildSystem.swift b/Sources/SwiftBuildSupport/SwiftBuildSystem.swift
index c9bbdd09f0b..a5d8f63bd33 100644
--- a/Sources/SwiftBuildSupport/SwiftBuildSystem.swift
+++ b/Sources/SwiftBuildSupport/SwiftBuildSystem.swift
@@ -666,6 +666,16 @@ public final class SwiftBuildSystem: SPMBuildCore.BuildSystem {
             }
         }
 
+        // FIXME: "none" triples get a placeholder SDK/platform and don't support any specific triple by default. Unlike most platforms, where the vendor and environment is implied as a function of the arch and "platform", bare metal operates in terms of triples directly. We need to replace this bringup convenience with a more idiomatic mechanism, perhaps in the build request.
+        if buildParameters.triple.os == .noneOS {
+            settings["ARCHS"] = buildParameters.triple.archName
+            settings["VALID_ARCHS"] = buildParameters.triple.archName
+            settings["LLVM_TARGET_TRIPLE_VENDOR"] = buildParameters.triple.vendorName
+            if !buildParameters.triple.environmentName.isEmpty {
+                settings["LLVM_TARGET_TRIPLE_SUFFIX"] = "-" + buildParameters.triple.environmentName
+            }
+        }
+
         settings["LIBRARY_SEARCH_PATHS"] = try "$(inherited) \(buildParameters.toolchain.toolchainLibDir.pathString)"
         settings["OTHER_CFLAGS"] = (
             ["$(inherited)"]