diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 48488afcf01..11d53e02ddf 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,13 @@
+2012-02-23  Ulrich Weigand  <Ulrich.Weigand@de.ibm.com>
+
+	* acinclude.m4: Use HAVE_INITFINI_ARRAY_SUPPORT instead of
+	HAVE_INITFINI_ARRAY to work around namespace pollution in
+	certain versions of newlib system headers.
+	* config.in: Regenerate.
+	* configure: Regenerate.
+	* config/initfini-array.h: Use HAVE_INITFINI_ARRAY_SUPPORT
+	instead of HAVE_INITFINI_ARRAY.
+
 2012-02-22  Uros Bizjak  <ubizjak@gmail.com>
 
 	PR target/52330
diff --git a/gcc/acinclude.m4 b/gcc/acinclude.m4
index 0c6170ca143..a3948471048 100644
--- a/gcc/acinclude.m4
+++ b/gcc/acinclude.m4
@@ -486,7 +486,7 @@ changequote([,])dnl
   enable_initfini_array=$gcc_cv_initfini_array
 ])
 if test $enable_initfini_array = yes; then
-  AC_DEFINE(HAVE_INITFINI_ARRAY, 1,
+  AC_DEFINE(HAVE_INITFINI_ARRAY_SUPPORT, 1,
     [Define .init_array/.fini_array sections are available and working.])
 fi])
 
diff --git a/gcc/config.in b/gcc/config.in
index 28332110dbb..9b8d206c98d 100644
--- a/gcc/config.in
+++ b/gcc/config.in
@@ -1123,7 +1123,7 @@
 
 /* Define .init_array/.fini_array sections are available and working. */
 #ifndef USED_FOR_TARGET
-#undef HAVE_INITFINI_ARRAY
+#undef HAVE_INITFINI_ARRAY_SUPPORT
 #endif
 
 
diff --git a/gcc/config/initfini-array.h b/gcc/config/initfini-array.h
index bb48c70a920..ade9fcd634c 100644
--- a/gcc/config/initfini-array.h
+++ b/gcc/config/initfini-array.h
@@ -19,7 +19,7 @@
    along with GCC; see the file COPYING3.  If not see
    <http://www.gnu.org/licenses/>.  */
 
-#ifdef HAVE_INITFINI_ARRAY
+#ifdef HAVE_INITFINI_ARRAY_SUPPORT
 
 #define USE_INITFINI_ARRAY
 
diff --git a/gcc/configure b/gcc/configure
index 4bca79075c4..94b33cee6b7 100755
--- a/gcc/configure
+++ b/gcc/configure
@@ -22515,7 +22515,7 @@ fi
 
 if test $enable_initfini_array = yes; then
 
-$as_echo "#define HAVE_INITFINI_ARRAY 1" >>confdefs.h
+$as_echo "#define HAVE_INITFINI_ARRAY_SUPPORT 1" >>confdefs.h
 
 fi
 
diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog
index 61d9b591702..379b858c0df 100644
--- a/libgcc/ChangeLog
+++ b/libgcc/ChangeLog
@@ -1,3 +1,9 @@
+2012-02-23  Ulrich Weigand  <Ulrich.Weigand@de.ibm.com>
+
+	* config/ia64/crtbegin.S: Use HAVE_INITFINI_ARRAY_SUPPORT
+	instead of HAVE_INITFINI_ARRAY.
+	* config/ia64/crtend.S: Likewise.
+
 2012-02-20  Kai Tietz  <ktietz@redhat.com>
 
 	PR libstdc++/52300
diff --git a/libgcc/config/ia64/crtbegin.S b/libgcc/config/ia64/crtbegin.S
index 638489990d5..cfb54d310a8 100644
--- a/libgcc/config/ia64/crtbegin.S
+++ b/libgcc/config/ia64/crtbegin.S
@@ -61,7 +61,7 @@ __dso_handle:
 	.hidden __dso_handle
 
 
-#ifdef HAVE_INITFINI_ARRAY
+#ifdef HAVE_INITFINI_ARRAY_SUPPORT
 
 .section .fini_array, "a"
 	data8 @fptr(__do_global_dtors_aux)
@@ -70,7 +70,7 @@ __dso_handle:
 	data8 @fptr(__do_jv_register_classes)
 	data8 @fptr(__do_global_ctors_aux)
 
-#else /* !HAVE_INITFINI_ARRAY */
+#else /* !HAVE_INITFINI_ARRAY_SUPPORT */
 /*
  * Fragment of the ELF _fini routine that invokes our dtor cleanup.
  *
@@ -117,7 +117,7 @@ __dso_handle:
 	  mov b6 = r2
 	  br.call.sptk.many b0 = b6
 	}
-#endif /* !HAVE_INITFINI_ARRAY */
+#endif /* !HAVE_INITFINI_ARRAY_SUPPORT */
 
 .section .text
 	.align	32
diff --git a/libgcc/config/ia64/crtend.S b/libgcc/config/ia64/crtend.S
index a904af9cfd9..9ee151711c5 100644
--- a/libgcc/config/ia64/crtend.S
+++ b/libgcc/config/ia64/crtend.S
@@ -39,10 +39,10 @@ __DTOR_END__:
 __JCR_END__:
 	data8	0
 
-#ifdef HAVE_INITFINI_ARRAY
+#ifdef HAVE_INITFINI_ARRAY_SUPPORT
 	.global __do_global_ctors_aux
 	.hidden	__do_global_ctors_aux
-#else /* !HAVE_INITFINI_ARRAY */
+#else /* !HAVE_INITFINI_ARRAY_SUPPORT */
 /*
  * Fragment of the ELF _init routine that invokes our dtor cleanup.
  *
@@ -71,7 +71,7 @@ __JCR_END__:
 	  br.call.sptk.many b0 = b6
 	  ;;
 	}
-#endif /* !HAVE_INITFINI_ARRAY */
+#endif /* !HAVE_INITFINI_ARRAY_SUPPORT */
 
 .text
 	.align 32