diff --git a/cc/lto.go b/cc/lto.go
index 9868cdf..e034337 100644
--- a/cc/lto.go
+++ b/cc/lto.go
@@ -52,6 +52,9 @@
 
 	// Use clang lld instead of gnu ld.
 	Use_clang_lld *bool
+
+	// Use -fwhole-program-vtables cflag.
+	Whole_program_vtables *bool
 }
 
 type lto struct {
@@ -97,6 +100,10 @@
 		flags.Local.CFlags = append(flags.Local.CFlags, ltoFlag)
 		flags.Local.LdFlags = append(flags.Local.LdFlags, ltoFlag)
 
+		if Bool(lto.Properties.Whole_program_vtables) {
+			flags.Local.CFlags = append(flags.Local.CFlags, "-fwhole-program-vtables")
+		}
+
 		if ctx.Config().IsEnvTrue("USE_THINLTO_CACHE") && Bool(lto.Properties.Lto.Thin) && lto.useClangLld(ctx) {
 			// Set appropriate ThinLTO cache policy
 			cacheDirFormat := "-Wl,--thinlto-cache-dir="