dietlibc: disable gcc's C99 Floating-point environment at toolchain stage

base/dietlibc/pkg_gcc_post.conf

@@ -2,7 +2,7 @@
 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 #
 # Filename: package/.../dietlibc/pkg_gcc_post.conf
-# Copyright (C) 2007 The OpenSDE Project
+# Copyright (C) 2007 - 2009 The OpenSDE Project
 # Copyright (C) 2004 - 2006 The T2 SDE Project
 #
 # More information can be found in the files COPYING and README.
@@ -32,5 +32,7 @@ fi
 
 if ! atstage toolchain && [ "$SDECFG_LIBC" = "dietlibc" ]; then
 	hook_add postmake 9 "dietlibc_cc"
+else
+	var_append extraconfopt " " "--disable-decimal-float"
 fi