Enabled LTO

Author: cmaglie

avr-gcc-patches/0001-gcc-lto-wrapper.patch

@@ -0,0 +1,11 @@
+--- gcc/lto-wrapper.c.orig	2016-06-14 21:13:06.985134945 +0200
++++ gcc/lto-wrapper.c	2016-06-14 21:15:37.825167119 +0200
+@@ -594,7 +594,7 @@
+ 	  filename[p - argv[i]] = '\0';
+ 	  file_offset = (off_t) loffset;
+ 	}
+-      fd = open (argv[i], O_RDONLY);
++      fd = open (argv[i], O_RDONLY|O_BINARY);
+       if (fd == -1)
+ 	continue;
+       sobj = simple_object_start_read (fd, file_offset, "__GNU_LTO", 

binutils.build.bash

@@ -56,6 +56,9 @@ CONFARGS=" \
 	--disable-werror \
 	--enable-install-libiberty \
 	--enable-install-libbfd \
+	--enable-lto \
+	--enable-plugins\
+	--with-pic \
 	--target=avr"
 
 CFLAGS="-w -O2 -g0 $CFLAGS" CXXFLAGS="-w -O2 -g0 $CXXFLAGS" LDFLAGS="-s $LDFLAGS" ../binutils/configure $CONFARGS

gcc.build.bash

@@ -61,6 +61,11 @@ pushd gcc
 #cat avr-mcus.def | awk -f genmultilib.awk FORMAT="Makefile" > t-multilib 
 #popd
 pushd gcc
+for p in ../../avr-gcc-patches/*.patch
+do
+	echo Applying $p
+	patch -p1 < $p
+done
 autoconf
 popd
 popd