1 files changed, 1 insertions, 0 deletions
diff --git a/cc/util.go b/cc/util.go
index 92a32bc9..aaf0f71c 100644
--- a/cc/util.go
+++ b/cc/util.go
@@ -80,6 +80,7 @@ func flagsToBuilderFlags(in Flags) builderFlags {
 		coverage:       in.Coverage,
 		tidy:           in.Tidy,
 		sAbiDump:       in.SAbiDump,
+		protoRoot:      in.ProtoRoot,
 
 		systemIncludeFlags: strings.Join(in.SystemIncludeFlags, " "),