diff --git a/toolchain/gcc/Config.in b/toolchain/gcc/Config.in
index 0326d1007b..82f7923426 100644
--- a/toolchain/gcc/Config.in
+++ b/toolchain/gcc/Config.in
@@ -115,8 +115,8 @@ config BR2_INSTALL_LIBSTDCPP
 	bool "Build/install c++ compiler and libstdc++?"
 	default n
 	# >= 4.2.0 work fine without LARGEFILE
-	# huh? why so? select BR2_LARGEFILE
 	select BR2_LARGEFILE if BR2_GCC_SUPPORTS_SYSROOT
+	select BR2_GCC_CROSS_CXX
 	help
 	  Build/install c++ compiler and libstdc++?