diff --git a/Sources/CoreCommands/Options.swift b/Sources/CoreCommands/Options.swift
index 3b7411d8ce9..306ce94082d 100644
--- a/Sources/CoreCommands/Options.swift
+++ b/Sources/CoreCommands/Options.swift
@@ -444,6 +444,10 @@ public struct BuildOptions: ParsableArguments {
         self._buildToolsSwiftCFlags
     }
 
+    var hostSwiftCFlags: [String] {
+        self._buildToolsSwiftCFlags
+    }
+
     public var buildFlags: BuildFlags {
         BuildFlags(
             cCompilerFlags: self.cCompilerFlags,
@@ -454,6 +458,16 @@ public struct BuildOptions: ParsableArguments {
         )
     }
 
+    public var hostBuildFlags: BuildFlags {
+        BuildFlags(
+            cCompilerFlags: [],
+            cxxCompilerFlags: [],
+            swiftCompilerFlags: self.hostSwiftCFlags,
+            linkerFlags: [],
+            xcbuildFlags: []
+        )
+    }
+
     /// The compilation destination’s target triple.
     @Option(name: .customLong("triple"), transform: Triple.init)
     public var customCompileTriple: Triple?
diff --git a/Sources/CoreCommands/SwiftCommandState.swift b/Sources/CoreCommands/SwiftCommandState.swift
index b4a6158274b..5e87e3da931 100644
--- a/Sources/CoreCommands/SwiftCommandState.swift
+++ b/Sources/CoreCommands/SwiftCommandState.swift
@@ -926,13 +926,18 @@ public final class SwiftCommandState {
             case (true, true): .noLazy
             }
 
+        let flags = switch destination {
+        case .host: options.build.hostBuildFlags
+        case .target: options.build.buildFlags
+        }
+
         return try BuildParameters(
             destination: destination,
             dataPath: dataPath,
             configuration: self.options.build.configuration ?? self.preferredBuildConfiguration,
             toolchain: toolchain,
             triple: triple,
-            flags: options.build.buildFlags,
+            flags: flags,
             buildSystemKind: options.build.buildSystem,
             pkgConfigDirectories: options.locations.pkgConfigDirectories,
             architectures: options.build.architectures,