diff --git a/config/functions b/config/functions
index 32c0c9d5b2..c7bb854ba8 100644
--- a/config/functions
+++ b/config/functions
@@ -140,19 +140,19 @@ do_autoreconf() {
 
 strip_lto() {
   # strip out LTO optimization from *FLAGS
-  CFLAGS=`echo $CFLAGS | sed -e "s|-flto||"`
-  CXXFLAGS=`echo $CXXFLAGS | sed -e "s|-flto||"`
-  LDFLAGS=`echo $LDFLAGS | sed -e "s|-flto||"`
+  CFLAGS=`echo $CFLAGS | sed -e "s|-flto||g"`
+  CXXFLAGS=`echo $CXXFLAGS | sed -e "s|-flto||g"`
+  LDFLAGS=`echo $LDFLAGS | sed -e "s|-flto||g"`
 }
 
 strip_linker_plugin() {
   # strip out usage from linker plugin
-  LDFLAGS=`echo $LDFLAGS | sed -e "s|-fuse-linker-plugin||"`
+  LDFLAGS=`echo $LDFLAGS | sed -e "s|-fuse-linker-plugin||g"`
 }
 
 strip_gold() {
   # strip out usage from GOLD linker
   strip_linker_plugin
-  LDFLAGS=`echo $LDFLAGS | sed -e "s|-fuse-ld=gold||"`
+  LDFLAGS=`echo $LDFLAGS | sed -e "s|-fuse-ld=gold||g"`
 }
 
diff --git a/config/optimize b/config/optimize
index 2e1f9376ce..ff78ec361e 100644
--- a/config/optimize
+++ b/config/optimize
@@ -7,6 +7,7 @@ fi
 if [ "$OPTIMIZATIONS" = speed ];then
   GCC_OPTIM="$GCC_OPTIM -O3"
   GCC_OPTIM="$GCC_OPTIM -fexcess-precision=fast"
+  GCC_OPTIM="$GCC_OPTIM -ffast-math"
   LD_OPTIM="-Wl,--as-needed"
 fi
 
@@ -31,13 +32,15 @@ if [ "$GRAPHITE_SUPPORT" = yes ];then
   GCC_OPTIM="$GCC_OPTIM -fgraphite-identity"
 fi
 
-if [ "$LTO_SUPPORT" = yes ];then
-  GCC_OPTIM="$GCC_OPTIM -flto"
+if [ "$LTO_SUPPORT" = yes -o "$GOLD_SUPPORT" = yes ];then
   LD_OPTIM="$LD_OPTIM -fuse-linker-plugin"
 fi
 
+if [ "$LTO_SUPPORT" = yes ];then
+  GCC_OPTIM="$GCC_OPTIM -flto"
+fi
+
 if [ "$GOLD_SUPPORT" = yes ];then
-  LD_OPTIM="$LD_OPTIM -fuse-linker-plugin"
   LD_OPTIM="$LD_OPTIM -fuse-ld=gold"
 fi
 
diff --git a/packages/audio/alsa-lib/build b/packages/audio/alsa-lib/build
index c3e04f6f14..da3f8e495a 100755
--- a/packages/audio/alsa-lib/build
+++ b/packages/audio/alsa-lib/build
@@ -22,9 +22,6 @@
 
 . config/options $1
 
-# fails to build with gcc-4.6.1
-  strip_lto
-
 CFLAGS="$CFLAGS -D_FILE_OFFSET_BITS=32 -fPIC -DPIC"
 
 cd $PKG_BUILD
diff --git a/packages/compress/unrar/build b/packages/compress/unrar/build
index 448e3bdd34..ad4abd75fb 100755
--- a/packages/compress/unrar/build
+++ b/packages/compress/unrar/build
@@ -22,6 +22,9 @@
 
 . config/options $1
 
+# fails to build with GOLD linker
+  strip_gold
+
 cd $BUILD/$1
 make CC=$TARGET_CC \
      RANLIB=$TARGET_RANLIB \
diff --git a/packages/devel/libplist/build b/packages/devel/libplist/build
index f8c4cd7475..18e4e159f0 100755
--- a/packages/devel/libplist/build
+++ b/packages/devel/libplist/build
@@ -22,6 +22,9 @@
 
 . config/options $1
 
+# libplist fails to build with GOLD linker
+  strip_gold
+
 cd $PKG_BUILD
 mkdir -p build && cd build
 
diff --git a/packages/devel/pcre/build b/packages/devel/pcre/build
index acc32b1a5d..29456feb4c 100755
--- a/packages/devel/pcre/build
+++ b/packages/devel/pcre/build
@@ -22,9 +22,6 @@
 
 . config/options $1
 
-# fails to build with gcc-4.6.1
-  strip_lto
-
 cd $PKG_BUILD
 
 mkdir -p m4 && do_autoreconf
diff --git a/packages/graphics/Mesa/build b/packages/graphics/Mesa/build
index bf1325fbee..a897c51231 100755
--- a/packages/graphics/Mesa/build
+++ b/packages/graphics/Mesa/build
@@ -24,7 +24,10 @@
 
 get_graphicdrivers
 
-strip_lto # Mesa fails to build with LTO optimization
+# dont use gold linker because of compiling issues
+  strip_gold
+  strip_linker_plugin
+  strip_lto # Mesa fails to build with LTO optimization
 
 if [ "$LLVM_SUPPORT" = "yes" ]; then
   export LLVM_CONFIG="$SYSROOT_PREFIX/usr/bin/llvm-config"
diff --git a/packages/initramfs/sysutils/busybox-initramfs/build b/packages/initramfs/sysutils/busybox-initramfs/build
index 27f3fa4312..3de593bdd7 100755
--- a/packages/initramfs/sysutils/busybox-initramfs/build
+++ b/packages/initramfs/sysutils/busybox-initramfs/build
@@ -30,16 +30,6 @@ else
   BUSYBOX_CFG_FILE=$ROOT/$PKG_DIR/config/$1.conf
 fi
 
-# fails to build with gcc-4.6.1
-  strip_lto
-
-# fails to build with gcc-4.6.1 (ggc bug #49716
-  CFLAGS=`echo $CFLAGS | sed -e "s|-ftree-loop-distribution||"`
-  CFLAGS=`echo $CFLAGS | sed -e "s|-floop-interchange||"`
-  CFLAGS=`echo $CFLAGS | sed -e "s|-floop-strip-mine||"`
-  CFLAGS=`echo $CFLAGS | sed -e "s|-floop-block||"`
-  CFLAGS=`echo $CFLAGS | sed -e "s|-fgraphite-identity||"`
-
 # optimize for size
   CFLAGS=`echo $CFLAGS | sed -e "s|-Ofast|-Os|"`
   CFLAGS=`echo $CFLAGS | sed -e "s|-O.|-Os|"`
diff --git a/packages/mediacenter/xbmc/build b/packages/mediacenter/xbmc/build
index 7f4cc5e960..cb98f21628 100755
--- a/packages/mediacenter/xbmc/build
+++ b/packages/mediacenter/xbmc/build
@@ -84,6 +84,8 @@ fi
 
 # xbmc (ffmpeg) fails to build with LTO optimization
   strip_lto
+  strip_gold
+  strip_linker_plugin
 
 # dont use some optimizations because of problems
 # this fixes problems with faac implementation of ffmpeg
diff --git a/packages/sysutils/busybox/build b/packages/sysutils/busybox/build
index 83484b0ab0..79dc1e30ae 100755
--- a/packages/sysutils/busybox/build
+++ b/packages/sysutils/busybox/build
@@ -28,16 +28,6 @@ else
   BUSYBOX_CFG_FILE=$ROOT/$PKG_DIR/config/$1.conf
 fi
 
-# fails to build with gcc-4.6.1
-  strip_lto
-
-# fails to build with gcc-4.6.1 (ggc bug #49716
-  CFLAGS=`echo $CFLAGS | sed -e "s|-ftree-loop-distribution||"`
-  CFLAGS=`echo $CFLAGS | sed -e "s|-floop-interchange||"`
-  CFLAGS=`echo $CFLAGS | sed -e "s|-floop-strip-mine||"`
-  CFLAGS=`echo $CFLAGS | sed -e "s|-floop-block||"`
-  CFLAGS=`echo $CFLAGS | sed -e "s|-fgraphite-identity||"`
-
 # optimize for size
   CFLAGS=`echo $CFLAGS | sed -e "s|-Ofast|-Os|"`
   CFLAGS=`echo $CFLAGS | sed -e "s|-O.|-Os|"`
diff --git a/packages/sysutils/parted/build b/packages/sysutils/parted/build
index d79ad29900..5e4caa08ac 100755
--- a/packages/sysutils/parted/build
+++ b/packages/sysutils/parted/build
@@ -22,6 +22,9 @@
 
 . config/options $1
 
+# parted fails to build with GOLD linker
+  strip_gold
+
 cd $PKG_BUILD
 ./configure --host=$TARGET_NAME \
             --build=$HOST_NAME \
diff --git a/packages/toolchain/devel/eglibc/build b/packages/toolchain/devel/eglibc/build
index a9010cdada..16736697bf 100755
--- a/packages/toolchain/devel/eglibc/build
+++ b/packages/toolchain/devel/eglibc/build
@@ -26,13 +26,13 @@ strip_lto  # Fails to compile with GCC's link time optimization.
 strip_gold # Fails to compile using the gold linker.
 
 # Filter out some problematic *FLAGS
-  CFLAGS=`echo $CFLAGS | sed -e "s|-ffast-math||"`
-  CFLAGS=`echo $CFLAGS | sed -e "s|-Ofast|-O2|"`
-  CFLAGS=`echo $CFLAGS | sed -e "s|-O.|-O2|"`
+  CFLAGS=`echo $CFLAGS | sed -e "s|-ffast-math||g"`
+  CFLAGS=`echo $CFLAGS | sed -e "s|-Ofast|-O2|g"`
+  CFLAGS=`echo $CFLAGS | sed -e "s|-O.|-O2|g"`
 
-  LDFLAGS=`echo $LDFLAGS | sed -e "s|-ffast-math||"`
-  LDFLAGS=`echo $LDFLAGS | sed -e "s|-Ofast|-O2|"`
-  LDFLAGS=`echo $LDFLAGS | sed -e "s|-O.|-O2|"`
+  LDFLAGS=`echo $LDFLAGS | sed -e "s|-ffast-math||g"`
+  LDFLAGS=`echo $LDFLAGS | sed -e "s|-Ofast|-O2|g"`
+  LDFLAGS=`echo $LDFLAGS | sed -e "s|-O.|-O2|g"`
 
 # set some CFLAGS we need
   CFLAGS="$CFLAGS -g -fno-stack-protector"
diff --git a/packages/toolchain/lang/gcc-core/build b/packages/toolchain/lang/gcc-core/build
index 722120eeaa..6ef5ebf8a4 100755
--- a/packages/toolchain/lang/gcc-core/build
+++ b/packages/toolchain/lang/gcc-core/build
@@ -49,11 +49,9 @@ mkdir -p objdir-$1 && cd objdir-$1
              --disable-__cxa_atexit \
              --disable-libada \
              --disable-libmudflap \
-             --enable-gold=yes \
-             --enable-ld=default \
+             --enable-gold=both/ld \
              --enable-plugin \
              --enable-lto \
-             --disable-libquadmath \
              --disable-libssp \
              --disable-libgomp \
              --disable-shared \
diff --git a/packages/toolchain/lang/gcc-final/build b/packages/toolchain/lang/gcc-final/build
index 8dc04c038b..883fe3fb0f 100755
--- a/packages/toolchain/lang/gcc-final/build
+++ b/packages/toolchain/lang/gcc-final/build
@@ -49,11 +49,9 @@ mkdir -p objdir-$1 && cd objdir-$1
              --disable-libmudflap \
              --disable-libssp \
              --disable-multilib \
-             --enable-gold=yes \
-             --enable-ld=default \
+             --enable-gold=both/ld \
              --enable-plugin \
              --enable-lto \
-             --disable-libquadmath \
              --enable-tls \
              --enable-shared \
              --enable-c99 \
diff --git a/packages/toolchain/lang/gcc/meta b/packages/toolchain/lang/gcc/meta
index cfb17f9d6b..5fef08c778 100644
--- a/packages/toolchain/lang/gcc/meta
+++ b/packages/toolchain/lang/gcc/meta
@@ -19,7 +19,7 @@
 ################################################################################
 
 PKG_NAME="gcc"
-PKG_VERSION="4.6.1"
+PKG_VERSION="4.5.3"
 PKG_REV="1"
 PKG_ARCH="any"
 PKG_LICENSE="GPL"
diff --git a/packages/toolchain/lang/gcc/patches/gcc-4.6.1-bfd_and_gold.patch b/packages/toolchain/lang/gcc/patches/gcc-4.5.3-bfd_and_gold.patch
similarity index 60%
rename from packages/toolchain/lang/gcc/patches/gcc-4.6.1-bfd_and_gold.patch
rename to packages/toolchain/lang/gcc/patches/gcc-4.5.3-bfd_and_gold.patch
index 61f397ae40..a3b33273d3 100644
--- a/packages/toolchain/lang/gcc/patches/gcc-4.6.1-bfd_and_gold.patch
+++ b/packages/toolchain/lang/gcc/patches/gcc-4.5.3-bfd_and_gold.patch
@@ -1,7 +1,99 @@
-diff -Naur gcc-4.6.0-old/gcc/collect2.c gcc-4.6.0-new/gcc/collect2.c
---- gcc-4.6.0-old/gcc/collect2.c	2011-01-06 10:50:20.000000000 -0800
-+++ gcc-4.6.0-new/gcc/collect2.c	2011-03-28 21:52:29.000000000 -0700
-@@ -1075,17 +1075,19 @@
+diff -Naur gcc-4.5-20101118/configure.ac gcc-4.5-20101118.patch/configure.ac
+--- gcc-4.5-20101118/configure.ac	2010-10-06 12:29:55.000000000 +0200
++++ gcc-4.5-20101118.patch/configure.ac	2010-11-26 03:48:17.007444557 +0100
+@@ -174,7 +174,7 @@
+ # know that we are building the simulator.
+ # binutils, gas and ld appear in that order because it makes sense to run
+ # "make check" in that particular order.
+-# If --enable-gold is used, "gold" will replace "ld".
++# If --enable-gold is used, "gold" may replace "ld".
+ host_tools="texinfo byacc flex bison binutils gas ld fixincludes gcc cgen sid sim gdb make patch prms send-pr gprof etc expect dejagnu ash bash bzip2 m4 autoconf automake libtool diff rcs fileutils shellutils time textutils wdiff find uudecode hello tar gzip indent recode release sed utils guile perl gawk findutils gettext zip fastjar gnattools"
+ 
+ # libgcj represents the runtime libraries only used by gcj.
+@@ -315,37 +315,57 @@
+ esac
+ 
+ # Handle --enable-gold.
++#   --enable-gold		Build only gold
++#   --disable-gold [default]	Build only ld
++#   --enable-gold=both		Build both gold and ld, ld is default
++#   --enable-gold=both/ld	Same
++#   --enable-gold=both/gold	Build both gold and ld, gold is default, ld is renamed ld.bfd
+ 
+ AC_ARG_ENABLE(gold,
+-[  --enable-gold           use gold instead of ld],
++[  --enable-gold[[=ARG]]     build gold [[ARG={both}[[/{gold,ld}]]]]],
+ ENABLE_GOLD=$enableval,
+ ENABLE_GOLD=no)
+-if test "${ENABLE_GOLD}" = "yes"; then
+-  # Check for ELF target.
+-  is_elf=no
+-  case "${target}" in
+-    *-*-elf* | *-*-sysv4* | *-*-unixware* | *-*-eabi* | hppa*64*-*-hpux* \
+-    | *-*-linux* | frv-*-uclinux* | *-*-irix5* | *-*-irix6* \
+-    | *-*-netbsd* | *-*-openbsd* | *-*-freebsd* | *-*-solaris2* | *-*-nto*)
++  case "${ENABLE_GOLD}" in
++  yes|both|both/gold|both/ld)
++    # Check for ELF target.
++    is_elf=no
++    case "${target}" in
++      *-*-elf* | *-*-sysv4* | *-*-unixware* | *-*-eabi* | hppa*64*-*-hpux* \
++      | *-*-linux* | frv-*-uclinux* | *-*-irix5* | *-*-irix6* \
++      | *-*-netbsd* | *-*-openbsd* | *-*-freebsd* | *-*-solaris2* | *-*-nto*)
++        case "${target}" in
++          *-*-linux*aout* | *-*-linux*oldld*)
++            ;;
++          *)
++            is_elf=yes
++            ;;
++        esac
++    esac
++
++    if test "$is_elf" = "yes"; then
++      # Check for target supported by gold.
+       case "${target}" in
+-        *-*-linux*aout* | *-*-linux*oldld*)
+-          ;;
+-        *)
+-          is_elf=yes
++        i?86-*-* | x86_64-*-* | sparc*-*-* | powerpc*-*-* | arm*-*-*)
++	  case "${ENABLE_GOLD}" in 
++	  both*)
++            configdirs="$configdirs gold"
++	    ;;
++	  *)
++            configdirs="`echo " ${configdirs} " | sed -e 's/ ld / gold /'`"
++	    ;;
++	  esac
++	  ENABLE_GOLD=yes
+           ;;
+       esac
++    fi
++    ;;
++  no)
++    ;;
++  *)
++    AC_MSG_ERROR([invalid --enable-gold argument])
++    ;;
+   esac
+ 
+-  if test "$is_elf" = "yes"; then
+-    # Check for target supported by gold.
+-    case "${target}" in
+-      i?86-*-* | x86_64-*-* | sparc*-*-* | powerpc*-*-* | arm*-*-*)
+-        configdirs=`echo " ${configdirs} " | sed -e 's/ ld / gold /'`
+-        ;;
+-    esac
+-  fi
+-fi
+-
+ # Configure extra directories which are host specific
+ 
+ case "${host}" in
+diff -Naur gcc-4.5-20101118/gcc/collect2.c gcc-4.5-20101118.patch/gcc/collect2.c
+--- gcc-4.5-20101118/gcc/collect2.c	2010-06-24 23:06:37.000000000 +0200
++++ gcc-4.5-20101118.patch/gcc/collect2.c	2010-11-26 03:42:31.162881405 +0100
+@@ -1114,17 +1114,19 @@
  int
  main (int argc, char **argv)
  {
@@ -29,7 +121,7 @@ diff -Naur gcc-4.6.0-old/gcc/collect2.c gcc-4.6.0-new/gcc/collect2.c
  
  #ifdef CROSS_DIRECTORY_STRUCTURE
    /* If we look for a program in the compiler directories, we just use
-@@ -1095,6 +1097,10 @@
+@@ -1134,6 +1136,10 @@
  
    const char *const full_ld_suffix =
      concat(target_machine, "-", ld_suffix, NULL);
@@ -40,7 +132,7 @@ diff -Naur gcc-4.6.0-old/gcc/collect2.c gcc-4.6.0-new/gcc/collect2.c
    const char *const full_plugin_ld_suffix =
      concat(target_machine, "-", plugin_ld_suffix, NULL);
    const char *const full_nm_suffix =
-@@ -1110,15 +1116,17 @@
+@@ -1149,15 +1155,17 @@
    const char *const full_gstrip_suffix =
      concat (target_machine, "-", gstrip_suffix, NULL);
  #else
@@ -64,7 +156,7 @@ diff -Naur gcc-4.6.0-old/gcc/collect2.c gcc-4.6.0-new/gcc/collect2.c
  #endif /* CROSS_DIRECTORY_STRUCTURE */
  
    const char *arg;
-@@ -1132,7 +1140,13 @@
+@@ -1171,7 +1179,13 @@
    const char **c_ptr;
    char **ld1_argv;
    const char **ld1;
@@ -79,20 +171,37 @@ diff -Naur gcc-4.6.0-old/gcc/collect2.c gcc-4.6.0-new/gcc/collect2.c
  
    /* The kinds of symbols we will have to consider when scanning the
       outcome of a first pass link.  This is ALL to start with, then might
-@@ -1209,15 +1223,21 @@
-         else if (! strcmp (argv[i], "-flto-partition=none"))
- 	  no_partition = true;
-         else if ((! strncmp (argv[i], "-flto=", 6)
--		  || ! strcmp (argv[i], "-flto")) && ! use_plugin)
-+		  || ! strcmp (argv[i], "-flto"))
+@@ -1188,7 +1202,6 @@
+   int first_file;
+   int num_c_args;
+   char **old_argv;
+-
+   bool use_verbose = false;
+ 
+   old_argv = argv;
+@@ -1244,22 +1257,29 @@
+       {
+ 	if (! strcmp (argv[i], "-debug"))
+ 	  debug = 1;
+-        else if (! strcmp (argv[i], "-flto") && ! use_plugin)
++        else if (! strcmp (argv[i], "-flto")
 +		 && selected_linker != PLUGIN_LINKER)
- 	  lto_mode = LTO_MODE_WHOPR;
- 	else if (!strncmp (argv[i], "-fno-lto", 8))
- 	  lto_mode = LTO_MODE_NONE;
+ 	  {
+ 	    use_verbose = true;
+ 	    lto_mode = LTO_MODE_LTO;
+ 	  }
+-        else if (! strcmp (argv[i], "-fwhopr") && ! use_plugin)
++        else if (! strcmp (argv[i], "-fwhopr")
++		 && selected_linker != PLUGIN_LINKER)
+ 	  {
+ 	    use_verbose = true;
+ 	    lto_mode = LTO_MODE_WHOPR;
+ 	  }
          else if (! strcmp (argv[i], "-plugin"))
  	  {
 -	    use_plugin = true;
 +	    selected_linker =  PLUGIN_LINKER;
+ 	    use_verbose = true;
  	    lto_mode = LTO_MODE_NONE;
  	  }
 +	else if (! strcmp (argv[i], "-use-gold"))
@@ -103,7 +212,7 @@ diff -Naur gcc-4.6.0-old/gcc/collect2.c gcc-4.6.0-new/gcc/collect2.c
  #ifdef COLLECT_EXPORT_LIST
  	/* since -brtl, -bexport, -b64 are not position dependent
  	   also check for them here */
-@@ -1299,35 +1319,108 @@
+@@ -1339,35 +1359,108 @@
    /* Try to discover a valid linker/nm/strip to use.  */
  
    /* Maybe we know the right file to use (if not cross).  */
@@ -226,10 +335,10 @@ diff -Naur gcc-4.6.0-old/gcc/collect2.c gcc-4.6.0-new/gcc/collect2.c
  
  #ifdef REAL_NM_FILE_NAME
    nm_file_name = find_a_file (&path, REAL_NM_FILE_NAME);
-diff -Naur gcc-4.6.0-old/gcc/common.opt gcc-4.6.0-new/gcc/common.opt
---- gcc-4.6.0-old/gcc/common.opt	2011-03-05 16:38:13.000000000 -0800
-+++ gcc-4.6.0-new/gcc/common.opt	2011-03-28 21:52:29.000000000 -0700
-@@ -2019,6 +2019,9 @@
+diff -Naur gcc-4.5-20101118/gcc/common.opt gcc-4.5-20101118.patch/gcc/common.opt
+--- gcc-4.5-20101118/gcc/common.opt	2010-03-18 04:01:09.000000000 +0100
++++ gcc-4.5-20101118.patch/gcc/common.opt	2010-11-26 03:42:31.164881431 +0100
+@@ -1401,6 +1401,9 @@
  Common Report Var(flag_unwind_tables) Optimization
  Just generate unwind tables for exception handling
  
@@ -239,10 +348,71 @@ diff -Naur gcc-4.6.0-old/gcc/common.opt gcc-4.6.0-new/gcc/common.opt
  fuse-linker-plugin
  Common Undocumented
  
-diff -Naur gcc-4.6.0-old/gcc/configure.ac gcc-4.6.0-new/gcc/configure.ac
---- gcc-4.6.0-old/gcc/configure.ac	2011-02-28 07:36:37.000000000 -0800
-+++ gcc-4.6.0-new/gcc/configure.ac	2011-03-28 21:58:18.000000000 -0700
-@@ -1937,6 +1937,17 @@
+diff -Naur gcc-4.5-20101118/gcc/configure gcc-4.5-20101118.patch/gcc/configure
+--- gcc-4.5-20101118/gcc/configure	2010-10-06 21:09:10.000000000 +0200
++++ gcc-4.5-20101118.patch/gcc/configure	2010-11-26 03:42:31.184881696 +0100
+@@ -684,6 +684,7 @@
+ gcc_cv_objdump
+ ORIGINAL_NM_FOR_TARGET
+ gcc_cv_nm
++ORIGINAL_GOLD_FOR_TARGET
+ ORIGINAL_LD_FOR_TARGET
+ ORIGINAL_PLUGIN_LD_FOR_TARGET
+ gcc_cv_ld
+@@ -17108,7 +17109,7 @@
+   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
+   lt_status=$lt_dlunknown
+   cat > conftest.$ac_ext <<_LT_EOF
+-#line 17111 "configure"
++#line 17112 "configure"
+ #include "confdefs.h"
+ 
+ #if HAVE_DLFCN_H
+@@ -17214,7 +17215,7 @@
+   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
+   lt_status=$lt_dlunknown
+   cat > conftest.$ac_ext <<_LT_EOF
+-#line 17217 "configure"
++#line 17218 "configure"
+ #include "confdefs.h"
+ 
+ #if HAVE_DLFCN_H
+@@ -20662,6 +20663,21 @@
+ fi
+ fi
+ 
++gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold
++
++if test "${gcc_cv_gold+set}" = set; then :
++
++else
++
++if test -f $gcc_cv_ld_gold_srcdir/configure.ac \
++     && test -f ../gold/Makefile \
++     && test x$build = x$host; then
++	gcc_cv_gold=../gold/ld-new$build_exeext
++else
++        gcc_cv_gold=''
++fi
++fi
++
+ ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
+ PLUGIN_LD=`basename $gcc_cv_ld`
+ 
+@@ -20688,6 +20704,9 @@
+  ;;
+ esac
+ 
++ORIGINAL_GOLD_FOR_TARGET=$gcc_cv_gold
++
++
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking what linker to use" >&5
+ $as_echo_n "checking what linker to use... " >&6; }
+ if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
+diff -Naur gcc-4.5-20101118/gcc/configure.ac gcc-4.5-20101118.patch/gcc/configure.ac
+--- gcc-4.5-20101118/gcc/configure.ac	2010-10-06 21:09:10.000000000 +0200
++++ gcc-4.5-20101118.patch/gcc/configure.ac	2010-11-26 03:42:31.201881922 +0100
+@@ -1947,6 +1947,17 @@
          AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET)
  fi])
  
@@ -260,7 +430,7 @@ diff -Naur gcc-4.6.0-old/gcc/configure.ac gcc-4.6.0-new/gcc/configure.ac
  ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld
  PLUGIN_LD=`basename $gcc_cv_ld`
  AC_ARG_WITH(plugin-ld,
-@@ -1966,6 +1977,9 @@
+@@ -1965,6 +1976,9 @@
    *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;;
  esac 
  
@@ -270,43 +440,44 @@ diff -Naur gcc-4.6.0-old/gcc/configure.ac gcc-4.6.0-new/gcc/configure.ac
  AC_MSG_CHECKING(what linker to use)
  if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext; then
  	# Single tree build which includes ld.  We want to prefer it
-diff -Naur gcc-4.6.0-old/gcc/doc/invoke.texi gcc-4.6.0-new/gcc/doc/invoke.texi
---- gcc-4.6.0-old/gcc/doc/invoke.texi	2011-03-18 07:34:52.000000000 -0700
-+++ gcc-4.6.0-new/gcc/doc/invoke.texi	2011-03-28 21:52:29.000000000 -0700
-@@ -401,7 +401,7 @@
+diff -Naur gcc-4.5-20101118/gcc/doc/invoke.texi gcc-4.5-20101118.patch/gcc/doc/invoke.texi
+--- gcc-4.5-20101118/gcc/doc/invoke.texi	2010-09-08 19:36:40.000000000 +0200
++++ gcc-4.5-20101118.patch/gcc/doc/invoke.texi	2010-11-26 03:42:31.218882146 +0100
+@@ -390,7 +390,7 @@
  -funit-at-a-time -funroll-all-loops -funroll-loops @gol
  -funsafe-loop-optimizations -funsafe-math-optimizations -funswitch-loops @gol
  -fvariable-expansion-in-unroller -fvect-cost-model -fvpt -fweb @gol
---fwhole-program -fwpa -fuse-linker-plugin @gol
-+-fwhole-program -fwpa -fuse-ld -fuse-linker-plugin @gol
+--fwhole-program -fwhopr -fwpa -fuse-linker-plugin @gol
++-fwhole-program -fwhopr -fwpa -fuse-linker-plugin -fuse-ld @gol
  --param @var{name}=@var{value}
- -O  -O0  -O1  -O2  -O3  -Os -Ofast}
+ -O  -O0  -O1  -O2  -O3  -Os}
  
-@@ -7743,6 +7743,16 @@
+@@ -7416,6 +7416,16 @@
  
- Enabled at levels @option{-O}, @option{-O2}, @option{-O3}, @option{-Os}.
+ Disabled by default.
  
 +@item -fuse-ld=gold
 +Use the @command{gold} linker instead of the default linker.
 +This option is only necessary if GCC has been configured with
-+@option{--enable-gold} and @option{--enable-ld=default}.
++@option{--enable-gold=both} or @option{--enable-gold=both/ld}.
 +
 +@item -fuse-ld=bfd
 +Use the @command{ld.bfd} linker instead of the default linker.
 +This option is only necessary if GCC has been configured with
-+@option{--enable-gold} and @option{--enable-ld}.
++@option{--enable-gold=both/gold}.
 +
  @item -fcprop-registers
  @opindex fcprop-registers
  After register allocation and post-register allocation instruction splitting,
-diff -Naur gcc-4.6.0-old/gcc/exec-tool.in gcc-4.6.0-new/gcc/exec-tool.in
---- gcc-4.6.0-old/gcc/exec-tool.in	2011-01-03 12:52:22.000000000 -0800
-+++ gcc-4.6.0-new/gcc/exec-tool.in	2011-03-28 21:52:29.000000000 -0700
+diff -Naur gcc-4.5-20101118/gcc/doc/invoke.texi.orig gcc-4.5-20101118.patch/gcc/doc/invoke.texi.orig
+diff -Naur gcc-4.5-20101118/gcc/exec-tool.in gcc-4.5-20101118.patch/gcc/exec-tool.in
+--- gcc-4.5-20101118/gcc/exec-tool.in	2009-11-08 23:36:51.000000000 +0100
++++ gcc-4.5-20101118.patch/gcc/exec-tool.in	2010-11-26 03:42:31.226882250 +0100
 @@ -1,6 +1,6 @@
  #! /bin/sh
  
--# Copyright (C) 2007, 2008, 2010 Free Software Foundation, Inc.
-+# Copyright (C) 2007, 2008, 2010, 2011 Free Software Foundation, Inc.
+-# Copyright (C) 2007, 2008 Free Software Foundation, Inc.
++# Copyright (C) 2007, 2008, 2010 Free Software Foundation, Inc.
  # This file is part of GCC.
  
  # GCC is free software; you can redistribute it and/or modify
@@ -323,20 +494,29 @@ diff -Naur gcc-4.6.0-old/gcc/exec-tool.in gcc-4.6.0-new/gcc/exec-tool.in
 +version="1.1"
  
  invoked=`basename "$0"`
- id=$invoked
-@@ -36,15 +38,44 @@
+ case "$invoked" in
+@@ -34,54 +36,110 @@
+     prog=as-new$exeext
      dir=gas
      ;;
-   collect-ld)
+-  collect-ld)
 -    # when using a linker plugin, gcc will always pass '-plugin' as the
--    # first or second option to the linker.
--    if test x"$1" = "x-plugin" || test x"$2" = "x-plugin"; then
+-    # first option to the linker.
+-    if test x"$1" = "x-plugin"; then
 -      original=$ORIGINAL_PLUGIN_LD_FOR_TARGET
 -    else
 -      original=$ORIGINAL_LD_FOR_TARGET
 -    fi
-     prog=ld-new$exeext
+-    prog=ld-new$exeext
 -    dir=ld
+-    ;;
+   nm)
+     original=$ORIGINAL_NM_FOR_TARGET
+     prog=nm-new$exeext
+     dir=binutils
+     ;;
++  collect-ld)
++    prog=ld-new$exeext
 +    # Look for the a command line option
 +    # specifying the linker to be used.
 +    case " $* " in
@@ -374,10 +554,14 @@ diff -Naur gcc-4.6.0-old/gcc/exec-tool.in gcc-4.6.0-new/gcc/exec-tool.in
 +      # will issue an error message for us.
 +      fi
 +    fi
-     id=ld
-     ;;
-   nm)
-@@ -61,29 +92,58 @@
++    ;;
+ esac
+ 
+ case "$original" in
+   ../*)
+-    # compute absolute path of the location of this script
++    # Compute absolute path to the location of this script.
+     tdir=`dirname "$0"`
      scriptdir=`cd "$tdir" && pwd`
  
      if test -x $scriptdir/../$dir/$prog; then
@@ -390,11 +574,9 @@ diff -Naur gcc-4.6.0-old/gcc/exec-tool.in gcc-4.6.0-new/gcc/exec-tool.in
 -      # libtool has not relinked ld-new yet, but we cannot just use the
 -      # previous stage (because then the relinking would just never happen!).
 -      # So we take extra care to use prev-ld/ld-new *on recursive calls*.
--      eval LT_RCU="\${LT_RCU_$id}"
 -      test x"$LT_RCU" = x"1" && exec $scriptdir/../prev-$dir/$prog ${1+"$@"}
 -
--      eval LT_RCU_$id=1
--      export LT_RCU_$id
+-      LT_RCU=1; export LT_RCU
 -      $scriptdir/../$dir/$prog ${1+"$@"}
 -      result=$?
 -      exit $result
@@ -409,12 +591,10 @@ diff -Naur gcc-4.6.0-old/gcc/exec-tool.in gcc-4.6.0-new/gcc/exec-tool.in
 +          # Libtool has not relinked ld-new yet, but we cannot just use the
 +          # previous stage (because then the relinking would just never happen!).
 +          # So we take extra care to use prev-ld/ld-new *on recursive calls*.
-+          eval LT_RCU="\${LT_RCU_$id}"
 +          if test x"$LT_RCU" = x"1"; then
 +	    original=$scriptdir/../prev-$dir/$prog
 +          else
-+            eval LT_RCU_$id=1
-+            export LT_RCU_$id
++            LT_RCU=1; export LT_RCU
 +            case " $* " in
 +              *\ -v\ *)
 +               echo "$invoked $version"
@@ -435,13 +615,13 @@ diff -Naur gcc-4.6.0-old/gcc/exec-tool.in gcc-4.6.0-new/gcc/exec-tool.in
      fi
      ;;
 -  *)
--    exec $original ${1+"$@"}
+-    exec "$original" ${1+"$@"}
 +  "")
 +    echo "$invoked: executable not configured"
 +    exit 1
      ;;
  esac
-+
+ 
 +# If -v has been used then display our version number
 +# and then echo the command we are about to invoke.
 +case " $* " in
@@ -450,31 +630,31 @@ diff -Naur gcc-4.6.0-old/gcc/exec-tool.in gcc-4.6.0-new/gcc/exec-tool.in
 +    echo $original $*
 +    ;;
 +esac
-+
+ 
 +if test -x $original; then
 +  exec "$original" ${1+"$@"}
 +else
 +  echo "$invoked: unable to locate executable: $original"
 +  exit 1
 +fi
-diff -Naur gcc-4.6.0-old/gcc/gcc.c gcc-4.6.0-new/gcc/gcc.c
---- gcc-4.6.0-old/gcc/gcc.c	2011-02-22 18:04:43.000000000 -0800
-+++ gcc-4.6.0-new/gcc/gcc.c	2011-03-28 21:52:29.000000000 -0700
-@@ -657,6 +657,9 @@
-     }"PLUGIN_COND_CLOSE" \
-     %{flto|flto=*:%<fcompare-debug*} \
-     %{flto} %{flto=*} %l " LINK_PIE_SPEC \
+diff -Naur gcc-4.5-20101118/gcc/gcc.c gcc-4.5-20101118.patch/gcc/gcc.c
+--- gcc-4.5-20101118/gcc/gcc.c	2010-04-18 19:46:08.000000000 +0200
++++ gcc-4.5-20101118.patch/gcc/gcc.c	2010-11-26 03:42:31.230882305 +0100
+@@ -790,6 +790,9 @@
+     %{v:-plugin-opt=-v} \
+     } \
+     %{flto} %{fwhopr} %l " LINK_PIE_SPEC \
 +   "%{fuse-ld=gold:%{fuse-ld=bfd:%e-fuse-ld=gold and -fuse-ld=bfd may not be used together}} \
 +    %{fuse-ld=gold:-use-gold} \
 +    %{fuse-ld=bfd:-use-ld}" \
-    "%X %{o*} %{e*} %{N} %{n} %{r}\
-     %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}}\
+    "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
+     %{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
      %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
-diff -Naur gcc-4.6.0-old/gcc/opts.c gcc-4.6.0-new/gcc/opts.c
---- gcc-4.6.0-old/gcc/opts.c	2011-02-17 14:51:57.000000000 -0800
-+++ gcc-4.6.0-new/gcc/opts.c	2011-03-28 21:52:29.000000000 -0700
-@@ -1692,8 +1692,9 @@
-       dc->max_errors = value;
+diff -Naur gcc-4.5-20101118/gcc/opts.c gcc-4.5-20101118.patch/gcc/opts.c
+--- gcc-4.5-20101118/gcc/opts.c	2010-05-17 12:13:28.000000000 +0200
++++ gcc-4.5-20101118.patch/gcc/opts.c	2010-11-26 03:42:31.236882383 +0100
+@@ -2138,8 +2138,9 @@
+       /* These are no-ops, preserved for backward compatibility.  */
        break;
  
 +    case OPT_fuse_ld_:
diff --git a/packages/toolchain/lang/gcc/patches/gcc-4.6.1-disable_multilib_i386_linux64.patch b/packages/toolchain/lang/gcc/patches/gcc-4.5.3-disable_multilib_i386_linux64.patch
similarity index 76%
rename from packages/toolchain/lang/gcc/patches/gcc-4.6.1-disable_multilib_i386_linux64.patch
rename to packages/toolchain/lang/gcc/patches/gcc-4.5.3-disable_multilib_i386_linux64.patch
index b293a951be..a616fa3ec2 100644
--- a/packages/toolchain/lang/gcc/patches/gcc-4.6.1-disable_multilib_i386_linux64.patch
+++ b/packages/toolchain/lang/gcc/patches/gcc-4.5.3-disable_multilib_i386_linux64.patch
@@ -1,6 +1,6 @@
-diff -Naur gcc-4.6.0-old/gcc/config/i386/t-linux64 gcc-4.6.0-new/gcc/config/i386/t-linux64
---- gcc-4.6.0-old/gcc/config/i386/t-linux64	2009-04-21 12:03:23.000000000 -0700
-+++ gcc-4.6.0-new/gcc/config/i386/t-linux64	2011-03-28 21:12:19.000000000 -0700
+diff -Naur gcc-4.5-20100610-old/gcc/config/i386/t-linux64 gcc-4.5-20100610-new/gcc/config/i386/t-linux64
+--- gcc-4.5-20100610-old/gcc/config/i386/t-linux64	2010-06-11 09:31:52.000000000 -0700
++++ gcc-4.5-20100610-new/gcc/config/i386/t-linux64	2010-06-11 09:39:52.000000000 -0700
 @@ -23,13 +23,13 @@
  # it doesn't tell anything about the 32bit libraries on those systems.  Set
  # MULTILIB_OSDIRNAMES according to what is found on the target.
diff --git a/packages/toolchain/lang/gcc/patches/gcc-4.6.1-dynamic_linker.patch b/packages/toolchain/lang/gcc/patches/gcc-4.5.3-dynamic_linker.patch
similarity index 68%
rename from packages/toolchain/lang/gcc/patches/gcc-4.6.1-dynamic_linker.patch
rename to packages/toolchain/lang/gcc/patches/gcc-4.5.3-dynamic_linker.patch
index bf0dc1e4e3..05925a915a 100644
--- a/packages/toolchain/lang/gcc/patches/gcc-4.6.1-dynamic_linker.patch
+++ b/packages/toolchain/lang/gcc/patches/gcc-4.5.3-dynamic_linker.patch
@@ -1,7 +1,7 @@
-diff -Naur gcc-4.6.0-old/gcc/config/i386/linux64.h gcc-4.6.0-new/gcc/config/i386/linux64.h
---- gcc-4.6.0-old/gcc/config/i386/linux64.h	2011-03-28 21:06:17.000000000 -0700
-+++ gcc-4.6.0-new/gcc/config/i386/linux64.h	2011-03-28 21:07:35.000000000 -0700
-@@ -63,7 +63,7 @@
+diff -Naur gcc-4.5-20100610-old/gcc/config/i386/linux64.h gcc-4.5-20100610-new/gcc/config/i386/linux64.h
+--- gcc-4.5-20100610-old/gcc/config/i386/linux64.h	2010-06-11 09:40:14.000000000 -0700
++++ gcc-4.5-20100610-new/gcc/config/i386/linux64.h	2010-06-11 09:41:13.000000000 -0700
+@@ -59,7 +59,7 @@
     done.  */
  
  #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
@@ -10,12 +10,12 @@ diff -Naur gcc-4.6.0-old/gcc/config/i386/linux64.h gcc-4.6.0-new/gcc/config/i386
  
  #if TARGET_64BIT_DEFAULT
  #define SPEC_32 "m32"
-diff -Naur gcc-4.6.0-old/gcc/config/mips/iris6.h gcc-4.6.0-new/gcc/config/mips/iris6.h
---- gcc-4.6.0-old/gcc/config/mips/iris6.h	2011-03-28 21:06:17.000000000 -0700
-+++ gcc-4.6.0-new/gcc/config/mips/iris6.h	2011-03-28 21:08:12.000000000 -0700
-@@ -226,27 +226,27 @@
- #define STARTFILE_SPEC \
-   "%{!shared: \
+diff -Naur gcc-4.5-20100610-old/gcc/config/mips/iris6.h gcc-4.5-20100610-new/gcc/config/mips/iris6.h
+--- gcc-4.5-20100610-old/gcc/config/mips/iris6.h	2010-06-11 09:40:14.000000000 -0700
++++ gcc-4.5-20100610-new/gcc/config/mips/iris6.h	2010-06-11 09:41:13.000000000 -0700
+@@ -88,27 +88,27 @@
+      %{mabi=32:%{pg:gcrt1.o%s} \
+        %{!pg:%{p:mcrt1.o%s libprof1.a%s}%{!p:crt1.o%s}}} \
       %{mabi=n32: \
 -       %{mips4:%{pg:/usr/lib32/mips4/gcrt1.o%s} \
 -         %{!pg:%{p:/usr/lib32/mips4/mcrt1.o%s /usr/lib32/mips4/libprof1.a%s} \
@@ -57,10 +57,10 @@ diff -Naur gcc-4.6.0-old/gcc/config/mips/iris6.h gcc-4.6.0-new/gcc/config/mips/i
     %{!shared:" \
       SUBTARGET_DONT_WARN_UNUSED_SPEC \
       " %{pthread:-lpthread} %{p:libprof1.a%s}%{pg:libprof1.a%s} -lc " \
-@@ -262,10 +262,10 @@
- #define ENDFILE_SPEC \
+@@ -125,10 +125,10 @@
    "crtend.o%s irix-crtn.o%s \
     %{!shared: \
+      %{mabi=32:crtn.o%s}\
 -     %{mabi=n32:%{mips4:/usr/lib32/mips4/crtn.o%s}\
 -       %{!mips4:/usr/lib32/mips3/crtn.o%s}}\
 -     %{mabi=64:%{mips4:/usr/lib64/mips4/crtn.o%s}\
@@ -70,11 +70,11 @@ diff -Naur gcc-4.6.0-old/gcc/config/mips/iris6.h gcc-4.6.0-new/gcc/config/mips/i
 +     %{mabi=64:%{mips4:/usr/lib/mips4/crtn.o%s}\
 +       %{!mips4:/usr/lib/mips3/crtn.o%s}}}"
  
- /* Generic part of the LINK_SPEC.  */
- #undef LINK_SPEC
-diff -Naur gcc-4.6.0-old/gcc/config/mips/linux64.h gcc-4.6.0-new/gcc/config/mips/linux64.h
---- gcc-4.6.0-old/gcc/config/mips/linux64.h	2011-03-28 21:06:17.000000000 -0700
-+++ gcc-4.6.0-new/gcc/config/mips/linux64.h	2011-03-28 21:08:52.000000000 -0700
+ #define MIPS_TFMODE_FORMAT mips_extended_format
+ 
+diff -Naur gcc-4.5-20100610-old/gcc/config/mips/linux64.h gcc-4.5-20100610-new/gcc/config/mips/linux64.h
+--- gcc-4.5-20100610-old/gcc/config/mips/linux64.h	2010-06-11 09:40:14.000000000 -0700
++++ gcc-4.5-20100610-new/gcc/config/mips/linux64.h	2010-06-11 09:41:13.000000000 -0700
 @@ -36,9 +36,9 @@
    %{profile:-lc_p} %{!profile:-lc}}"
  
@@ -85,13 +85,13 @@ diff -Naur gcc-4.6.0-old/gcc/config/mips/linux64.h gcc-4.6.0-new/gcc/config/mips
 +#define GLIBC_DYNAMIC_LINKER64 "/lib/ld.so.1"
 +#define GLIBC_DYNAMIC_LINKERN32 "/lib/ld.so.1"
 +#define UCLIBC_DYNAMIC_LINKERN32 "/lib/ld-uClibc.so.0"
- #define BIONIC_DYNAMIC_LINKERN32 "/system/bin/linker32"
  #define LINUX_DYNAMIC_LINKERN32 \
-   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERN32, UCLIBC_DYNAMIC_LINKERN32, \
-diff -Naur gcc-4.6.0-old/gcc/config/rs6000/linux64.h gcc-4.6.0-new/gcc/config/rs6000/linux64.h
---- gcc-4.6.0-old/gcc/config/rs6000/linux64.h	2011-03-28 21:06:17.000000000 -0700
-+++ gcc-4.6.0-new/gcc/config/rs6000/linux64.h	2011-03-28 21:07:35.000000000 -0700
-@@ -373,7 +373,7 @@
+   CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERN32, UCLIBC_DYNAMIC_LINKERN32)
+ 
+diff -Naur gcc-4.5-20100610-old/gcc/config/rs6000/linux64.h gcc-4.5-20100610-new/gcc/config/rs6000/linux64.h
+--- gcc-4.5-20100610-old/gcc/config/rs6000/linux64.h	2010-06-11 09:40:14.000000000 -0700
++++ gcc-4.5-20100610-new/gcc/config/rs6000/linux64.h	2010-06-11 09:41:13.000000000 -0700
+@@ -349,7 +349,7 @@
  #define LINK_OS_DEFAULT_SPEC "%(link_os_linux)"
  
  #define GLIBC_DYNAMIC_LINKER32 "/lib/ld.so.1"
@@ -99,12 +99,12 @@ diff -Naur gcc-4.6.0-old/gcc/config/rs6000/linux64.h gcc-4.6.0-new/gcc/config/rs
 +#define GLIBC_DYNAMIC_LINKER64 "/lib/ld64.so.1"
  #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
  #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
- #if DEFAULT_LIBC == LIBC_UCLIBC
-diff -Naur gcc-4.6.0-old/gcc/config/sparc/linux64.h gcc-4.6.0-new/gcc/config/sparc/linux64.h
---- gcc-4.6.0-old/gcc/config/sparc/linux64.h	2011-03-28 21:06:17.000000000 -0700
-+++ gcc-4.6.0-new/gcc/config/sparc/linux64.h	2011-03-28 21:07:35.000000000 -0700
-@@ -102,7 +102,7 @@
-    done.  */
+ #if UCLIBC_DEFAULT
+diff -Naur gcc-4.5-20100610-old/gcc/config/sparc/linux64.h gcc-4.5-20100610-new/gcc/config/sparc/linux64.h
+--- gcc-4.5-20100610-old/gcc/config/sparc/linux64.h	2010-06-11 09:40:14.000000000 -0700
++++ gcc-4.5-20100610-new/gcc/config/sparc/linux64.h	2010-06-11 09:41:13.000000000 -0700
+@@ -110,7 +110,7 @@
+ /* If ELF is the default format, we should not use /lib/elf.  */
  
  #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
 -#define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux.so.2"
@@ -112,21 +112,21 @@ diff -Naur gcc-4.6.0-old/gcc/config/sparc/linux64.h gcc-4.6.0-new/gcc/config/spa
  
  #ifdef SPARC_BI_ARCH
  
-@@ -121,7 +121,7 @@
-       %{static:-static}} \
+@@ -130,7 +130,7 @@
+         %{static:-static}}} \
  "
  
 -#define LINK_ARCH64_SPEC "-m elf64_sparc -Y P,%R/usr/lib64 %{shared:-shared} \
 +#define LINK_ARCH64_SPEC "-m elf64_sparc -Y P,%R/usr/lib %{shared:-shared} \
    %{!shared: \
-     %{!static: \
-       %{rdynamic:-export-dynamic} \
-@@ -193,7 +193,7 @@
+     %{!ibcs: \
+       %{!static: \
+@@ -211,7 +211,7 @@
  #else /* !SPARC_BI_ARCH */
  
  #undef LINK_SPEC
 -#define LINK_SPEC "-m elf64_sparc -Y P,%R/usr/lib64 %{shared:-shared} \
 +#define LINK_SPEC "-m elf64_sparc -Y P,%R/usr/lib %{shared:-shared} \
    %{!shared: \
-     %{!static: \
-       %{rdynamic:-export-dynamic} \
+     %{!ibcs: \
+       %{!static: \
diff --git a/packages/toolchain/lang/gcc/patches/gcc-4.5.3-fix_undefined_references_with_lto-0.1.patch b/packages/toolchain/lang/gcc/patches/gcc-4.5.3-fix_undefined_references_with_lto-0.1.patch
new file mode 100644
index 0000000000..62f5b8ae52
--- /dev/null
+++ b/packages/toolchain/lang/gcc/patches/gcc-4.5.3-fix_undefined_references_with_lto-0.1.patch
@@ -0,0 +1,126 @@
+diff -Naur gcc-4.5-20101118/gcc/ChangeLog gcc-4.5-20101118.patch/gcc/ChangeLog
+diff -Naur gcc-4.5-20101118/gcc/doc/invoke.texi gcc-4.5-20101118.patch/gcc/doc/invoke.texi
+--- gcc-4.5-20101118/gcc/doc/invoke.texi	2010-09-08 19:36:40.000000000 +0200
++++ gcc-4.5-20101118.patch/gcc/doc/invoke.texi	2010-11-26 03:05:14.029157093 +0100
+@@ -9382,6 +9382,18 @@
+ %@{fgnu-runtime:%:replace-outfile(-lobjc -lobjc-gnu)@}
+ @end smallexample
+ 
++@item @code{pass-through-libs}
++The @code{pass-through-libs} spec function takes any number of arguments.  It
++finds any @option{-l} options and any non-options ending in ".a" (which it
++assumes are the names of linker input library archive files) and returns a
++result containing all the found arguments each prepended by
++@option{-plugin-opt=-pass-through=} and joined by spaces.  This list is
++intended to be passed to the LTO linker plugin.
++
++@smallexample
++%:pass-through-libs(%G %L %G)
++@end smallexample
++
+ @item @code{print-asm-header}
+ The @code{print-asm-header} function takes no arguments and simply
+ prints a banner like:
+diff -Naur gcc-4.5-20101118/gcc/gcc.c gcc-4.5-20101118.patch/gcc/gcc.c
+--- gcc-4.5-20101118/gcc/gcc.c	2010-04-18 19:46:08.000000000 +0200
++++ gcc-4.5-20101118.patch/gcc/gcc.c	2010-11-26 03:03:47.120008881 +0100
+@@ -407,6 +407,7 @@
+ static const char *compare_debug_dump_opt_spec_function (int, const char **);
+ static const char *compare_debug_self_opt_spec_function (int, const char **);
+ static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
++static const char *pass_through_libs_spec_func (int, const char **);
+ 
+ /* The Specs Language
+ 
+@@ -781,8 +782,7 @@
+     -plugin %(linker_plugin_file) \
+     -plugin-opt=%(lto_wrapper) \
+     -plugin-opt=%(lto_gcc) \
+-    %{static|static-libgcc:-plugin-opt=-pass-through=%(lto_libgcc)}	\
+-    %{static:-plugin-opt=-pass-through=-lc}	\
++    %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
+     %{O*:-plugin-opt=-O%*} \
+     %{w:-plugin-opt=-w} \
+     %{f*:-plugin-opt=-f%*} \
+@@ -841,7 +841,6 @@
+ static const char *linker_plugin_file_spec = "";
+ static const char *lto_wrapper_spec = "";
+ static const char *lto_gcc_spec = "";
+-static const char *lto_libgcc_spec = "";
+ static const char *link_command_spec = LINK_COMMAND_SPEC;
+ static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
+ static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
+@@ -1688,7 +1687,6 @@
+   INIT_STATIC_SPEC ("linker_plugin_file",	&linker_plugin_file_spec),
+   INIT_STATIC_SPEC ("lto_wrapper",		&lto_wrapper_spec),
+   INIT_STATIC_SPEC ("lto_gcc",			&lto_gcc_spec),
+-  INIT_STATIC_SPEC ("lto_libgcc",		&lto_libgcc_spec),
+   INIT_STATIC_SPEC ("link_libgcc",		&link_libgcc_spec),
+   INIT_STATIC_SPEC ("md_exec_prefix",		&md_exec_prefix),
+   INIT_STATIC_SPEC ("md_startfile_prefix",	&md_startfile_prefix),
+@@ -1730,6 +1728,7 @@
+   { "compare-debug-dump-opt",	compare_debug_dump_opt_spec_function },
+   { "compare-debug-self-opt",	compare_debug_self_opt_spec_function },
+   { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function },
++  { "pass-through-libs",	pass_through_libs_spec_func },
+ #ifdef EXTRA_SPEC_FUNCTIONS
+   EXTRA_SPEC_FUNCTIONS
+ #endif
+@@ -7580,10 +7579,6 @@
+ 	  if (!linker_plugin_file_spec)
+ 	    fatal ("-fuse-linker-plugin, but liblto_plugin.so not found");
+ 
+-	  lto_libgcc_spec = find_a_file (&startfile_prefixes, "libgcc.a",
+-					 R_OK, true);
+-	  if (!lto_libgcc_spec)
+-	    fatal ("could not find libgcc.a");
+ 	}
+       lto_gcc_spec = argv[0];
+ 
+@@ -8977,3 +8972,46 @@
+ 
+   return name;
+ }
++
++/* %:pass-through-libs spec function.  Finds all -l options and input
++   file names in the lib spec passed to it, and makes a list of them
++   prepended with the plugin option to cause them to be passed through
++   to the final link after all the new object files have been added.  */
++
++const char *
++pass_through_libs_spec_func (int argc, const char **argv)
++{
++  char *prepended = xstrdup (" ");
++  int n;
++  /* Shlemiel the painter's algorithm.  Innately horrible, but at least
++     we know that there will never be more than a handful of strings to
++     concat, and it's only once per run, so it's not worth optimising.  */
++  for (n = 0; n < argc; n++)
++    {
++      char *old = prepended;
++      /* Anything that isn't an option is a full path to an output
++         file; pass it through if it ends in '.a'.  Among options,
++	 pass only -l.  */
++      if (argv[n][0] == '-' && argv[n][1] == 'l')
++	{
++	  const char *lopt = argv[n] + 2;
++	  /* Handle both joined and non-joined -l options.  If for any
++	     reason there's a trailing -l with no joined or following
++	     arg just discard it.  */
++	  if (!*lopt && ++n >= argc)
++	    break;
++	  else if (!*lopt)
++	    lopt = argv[n];
++	  prepended = concat (prepended, "-plugin-opt=-pass-through=-l",
++		lopt, " ", NULL);
++	}
++      else if (!strcmp (".a", argv[n] + strlen (argv[n]) - 2))
++	{
++	  prepended = concat (prepended, "-plugin-opt=-pass-through=",
++		argv[n], " ", NULL);
++	}
++      if (prepended != old)
++	free (old);
++    }
++  return prepended;
++}
diff --git a/packages/toolchain/lang/gcc/patches/gcc-4.6.1-libstdc++-v3_config.patch b/packages/toolchain/lang/gcc/patches/gcc-4.5.3-libstdc++-v3_config.patch
similarity index 86%
rename from packages/toolchain/lang/gcc/patches/gcc-4.6.1-libstdc++-v3_config.patch
rename to packages/toolchain/lang/gcc/patches/gcc-4.5.3-libstdc++-v3_config.patch
index e35dd2cc0b..b7c6a701e1 100644
--- a/packages/toolchain/lang/gcc/patches/gcc-4.6.1-libstdc++-v3_config.patch
+++ b/packages/toolchain/lang/gcc/patches/gcc-4.5.3-libstdc++-v3_config.patch
@@ -1,6 +1,6 @@
-diff -Naur gcc-4.6.0-old/libstdc++-v3/config.h.in gcc-4.6.0-new/libstdc++-v3/config.h.in
---- gcc-4.6.0-old/libstdc++-v3/config.h.in	2011-03-28 21:07:18.000000000 -0700
-+++ gcc-4.6.0-new/libstdc++-v3/config.h.in	2011-03-28 21:10:03.000000000 -0700
+diff -Naur gcc-4.5-20100610-old/libstdc++-v3/config.h.in gcc-4.5-20100610-new/libstdc++-v3/config.h.in
+--- gcc-4.5-20100610-old/libstdc++-v3/config.h.in	2010-06-11 09:40:55.000000000 -0700
++++ gcc-4.5-20100610-new/libstdc++-v3/config.h.in	2010-06-11 09:41:44.000000000 -0700
 @@ -115,7 +115,7 @@
  #undef HAVE_FABSL
  
@@ -46,7 +46,7 @@ diff -Naur gcc-4.6.0-old/libstdc++-v3/config.h.in gcc-4.6.0-new/libstdc++-v3/con
  
  /* Define if strerror_r is available in <string.h>. */
  #undef HAVE_STRERROR_R
-@@ -360,7 +360,7 @@
+@@ -356,7 +356,7 @@
  #undef HAVE_SYS_IOCTL_H
  
  /* Define to 1 if you have the <sys/ipc.h> header file. */
@@ -55,7 +55,7 @@ diff -Naur gcc-4.6.0-old/libstdc++-v3/config.h.in gcc-4.6.0-new/libstdc++-v3/con
  
  /* Define to 1 if you have the <sys/isa_defs.h> header file. */
  #undef HAVE_SYS_ISA_DEFS_H
-@@ -372,16 +372,16 @@
+@@ -368,16 +368,16 @@
  #undef HAVE_SYS_PARAM_H
  
  /* Define to 1 if you have the <sys/resource.h> header file. */
@@ -75,7 +75,7 @@ diff -Naur gcc-4.6.0-old/libstdc++-v3/config.h.in gcc-4.6.0-new/libstdc++-v3/con
  
  /* Define to 1 if you have the <sys/types.h> header file. */
  #undef HAVE_SYS_TYPES_H
-@@ -411,7 +411,7 @@
+@@ -407,7 +407,7 @@
  #undef HAVE_TGMATH_H
  
  /* Define to 1 if the target supports thread-local storage. */
@@ -84,7 +84,7 @@ diff -Naur gcc-4.6.0-old/libstdc++-v3/config.h.in gcc-4.6.0-new/libstdc++-v3/con
  
  /* Define to 1 if you have the <unistd.h> header file. */
  #undef HAVE_UNISTD_H
-@@ -624,7 +624,7 @@
+@@ -620,7 +620,7 @@
  #undef HAVE__TANL
  
  /* Define as const if the declaration of iconv() needs const. */
diff --git a/projects/ATV/options b/projects/ATV/options
index f112dd7454..b2a32baaa1 100644
--- a/projects/ATV/options
+++ b/projects/ATV/options
@@ -71,8 +71,8 @@
       ;;
   esac
 
-# Build optimizations (size/normal/speed/fast)
-  OPTIMIZATIONS="fast"
+# Build optimizations (size/speed)
+  OPTIMIZATIONS="speed"
 
 # Project CFLAGS
   PROJECT_CFLAGS=""
diff --git a/projects/Fusion/options b/projects/Fusion/options
index aedf321905..5f4cda6ec1 100644
--- a/projects/Fusion/options
+++ b/projects/Fusion/options
@@ -71,11 +71,11 @@
       ;;
   esac
 
-# Build optimizations (size/normal/speed/fast)
-  OPTIMIZATIONS="fast"
+# Build optimizations (size/normal/speed)
+  OPTIMIZATIONS="speed"
 
 # Project CFLAGS
-  PROJECT_CFLAGS="-mfpmath=sse -msse2 -mssse3 -ftree-vectorize"
+  PROJECT_CFLAGS="-mfpmath=sse -msse2 -mssse3"
 
 # LTO (Link Time Optimazion) support
   LTO_SUPPORT="no"
diff --git a/projects/Generic/options b/projects/Generic/options
index d23fab8c2a..d281a490b4 100644
--- a/projects/Generic/options
+++ b/projects/Generic/options
@@ -71,8 +71,8 @@
       ;;
   esac
 
-# Build optimizations (size/normal/speed/fast)
-  OPTIMIZATIONS="fast"
+# Build optimizations (size/speed)
+  OPTIMIZATIONS="speed"
 
 # Project CFLAGS
   PROJECT_CFLAGS="-mmmx -msse -msse2 -mfpmath=sse"
diff --git a/projects/ION/options b/projects/ION/options
index bc1134bc40..1ee7097936 100644
--- a/projects/ION/options
+++ b/projects/ION/options
@@ -71,11 +71,11 @@
       ;;
   esac
 
-# Build optimizations (size/normal/speed/fast)
-  OPTIMIZATIONS="fast"
+# Build optimizations (size/normal/speed)
+  OPTIMIZATIONS="speed"
 
 # Project CFLAGS
-  PROJECT_CFLAGS="-mfpmath=sse -msse2 -mssse3 -mmovbe -ftree-vectorize"
+  PROJECT_CFLAGS="-mfpmath=sse -msse2 -mssse3 -mmovbe"
 
 # LTO (Link Time Optimazion) support
   LTO_SUPPORT="no"
diff --git a/projects/Intel/options b/projects/Intel/options
index 175a59c162..8dd3835472 100644
--- a/projects/Intel/options
+++ b/projects/Intel/options
@@ -71,11 +71,11 @@
       ;;
   esac
 
-# Build optimizations (size/normal/speed/fast)
-  OPTIMIZATIONS="fast"
+# Build optimizations (size/speed)
+  OPTIMIZATIONS="speed"
 
 # Project CFLAGS
-  PROJECT_CFLAGS="-mfpmath=sse -msse2 -mssse3 -mmovbe -ftree-vectorize"
+  PROJECT_CFLAGS="-mfpmath=sse -msse2 -mssse3"
 
 # LTO (Link Time Optimazion) support
   LTO_SUPPORT="no"
diff --git a/projects/Ultra/options b/projects/Ultra/options
index 47e6cbb588..140a3920dc 100644
--- a/projects/Ultra/options
+++ b/projects/Ultra/options
@@ -71,14 +71,14 @@
       ;;
   esac
 
-# Build optimizations (size/normal/speed/fast)
-  OPTIMIZATIONS="fast"
+# Build optimizations (size/normal/speed)
+  OPTIMIZATIONS="speed"
 
 # Project CFLAGS
-  PROJECT_CFLAGS="-mfpmath=sse -msse2 -mssse3 -mmovbe -ftree-vectorize"
+  PROJECT_CFLAGS="-mfpmath=sse -msse2 -mssse3 -mmovbe"
 
 # LTO (Link Time Optimazion) support
-  LTO_SUPPORT="no"
+  LTO_SUPPORT="yes"
 
 # GOLD (Google Linker) support
   GOLD_SUPPORT="yes"