SH gcc 4.6.3 with link-time optimization, for Archos targets

This is work from FS#12431 synced to current HEAD and slightly
tweaked (gcc 4.6.2 -> 4.6.3, binutils 2.21.1 -> 2.22)

Change-Id: I76af91e80ac2a9c16a776c7f0a33cc51603bbf9b

1 files changed, 6 insertions, 0 deletions

diff --git a/tools/configure b/tools/configure
index 08d07b7797..4059a95a68 100755
--- a/tools/configure
+++ b/tools/configure
@@ -3707,6 +3707,12 @@ if test "$CC" = "sh-elf-gcc"; then
       echo "WARNING: You use an unpatched gcc compiler: $gccver"
       echo "WARNING: http://www.rockbox.org/twiki/bin/view/Main/CrossCompiler"
     fi
+
+    if test "$gccnum" -ge "406"; then
+        echo "Enabling link-time optimization"
+        GCCOPTS="$GCCOPTS -flto"
+    fi
+
   fi
 fi