$NetBSD$
This forces U-Boot to use its own copy of libgcc rather than relying on it being 
available from the host toolchain.
--- lib/Kconfig.orig	2016-06-13 15:51:19.000000000 +0000
+++ lib/Kconfig
@@ -13,6 +13,7 @@ config HAVE_PRIVATE_LIBGCC
 
 config USE_PRIVATE_LIBGCC
 	bool "Use private libgcc"
+	default y
 	depends on HAVE_PRIVATE_LIBGCC
 	help
 	  This option allows you to use the built-in libgcc implementation