diff -p -up gcc-4.4.1/libstdc++-v3/acinclude.m4.orig gcc-4.4.1/libstdc++-v3/acinclude.m4
--- gcc-4.4.1/libstdc++-v3/acinclude.m4.orig	2009-05-06 06:00:57.000000000 -0300
+++ gcc-4.4.1/libstdc++-v3/acinclude.m4	2009-11-06 02:23:49.000000000 -0200
@@ -97,14 +97,15 @@ AC_DEFUN([GLIBCXX_CONFIGURE], [
   # std::exit can be guessed by AC_PROG_CXX, and used in later tests.
 
   m4_define([ac_cv_prog_CXX],[glibcxx_cv_prog_CXX])
-  m4_rename([_AC_ARG_VAR_PRECIOUS],[glibcxx_PRECIOUS])
+  m4_rename_force([_AC_ARG_VAR_PRECIOUS],[glibcxx_PRECIOUS])
   m4_define([_AC_ARG_VAR_PRECIOUS],[])
+  #m4_copy_force([_AC_ARG_VAR_PRECIOUS],[glibcxx_PRECIOUS])
   save_CXXFLAGS="$CXXFLAGS"
   CXXFLAGS="$CXXFLAGS -fno-builtin"
   AC_PROG_CC
   AC_PROG_CXX
   CXXFLAGS="$save_CXXFLAGS"
-  m4_rename([glibcxx_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
+  m4_rename_force([glibcxx_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
   AC_SUBST(CFLAGS)
   AC_SUBST(CXXFLAGS)