1 files changed, 9 insertions, 1 deletions
diff --git a/cc/lto.go b/cc/lto.go
index a3b28d9a2..94ed32415 100644
--- a/cc/lto.go
+++ b/cc/lto.go
@@ -16,6 +16,8 @@ package cc
 
 import (
 	"android/soong/android"
+	"android/soong/cc/config"
+	"strings"
 )
 
 // LTO (link-time optimization) allows the compiler to optimize and generate
@@ -101,7 +103,13 @@ func (lto *lto) flags(ctx BaseModuleContext, flags Flags) Flags {
 	if lto.LTO() {
 		var ltoFlag string
 		if lto.ThinLTO() {
-			ltoFlag = "-flto=thin -fsplit-lto-unit"
+			// TODO(b/129607781) sdclang does not currently support
+			// the "-fsplit-lto-unit" option
+			if flags.Sdclang && !strings.Contains(config.SDClangPath, "9.0") {
+				ltoFlag = "-flto=thin"
+			} else {
+				ltoFlag = "-flto=thin -fsplit-lto-unit"
+			}
 		} else {
 			ltoFlag = "-flto"
 		}