diff --git a/cc/cc.go b/cc/cc.go
index bc48622..6cff27f 100644
--- a/cc/cc.go
+++ b/cc/cc.go
@@ -1882,6 +1882,7 @@
 	module := &toolchainLibrary{}
 
 	module.LibraryProperties.BuildStatic = true
+	module.Properties.Clang = proptools.BoolPtr(false)
 
 	return newCCBase(&module.CCBase, module, common.DeviceSupported, common.MultilibBoth,
 		&module.LibraryProperties)
@@ -1893,6 +1894,10 @@
 	libName := ctx.ModuleName() + staticLibraryExtension
 	outputFile := common.PathForModuleOut(ctx, libName)
 
+	if flags.Clang {
+		ctx.ModuleErrorf("toolchain_library must use GCC, not Clang")
+	}
+
 	CopyGccLib(ctx, libName, ccFlagsToBuilderFlags(flags), outputFile)
 
 	c.out = outputFile