tools/gnu: Enable LTO in RSB tools

The change enables the building of LTO into RTEMS tools. Compiler
options are required to enable use in an application.

source-builder/config/binutils-2-1.cfg

@@ -26,14 +26,11 @@ URL: 	   http://sources.redhat.com/binutils
 %define allow_cxc
 
 #
-# Default gold and LTO to disable.
+# Default gold to disable.
 #
 %ifn %{defined with_gold}
  %define with_gold 0
 %endif
-%ifn %{defined with_lto}
- %define with_lto 0
-%endif
 
 #
 # Source
@@ -72,7 +69,6 @@ URL: 	   http://sources.redhat.com/binutils
     %{?with_deterministic_archives:--enable-deterministic-archives} \
     %{?with_64_bit_bfd:--enable-64-bit-bfd} \
     %{?with_gold:--enable-gold=yes} \
-    %{?with_lto:--enable-lto --enable-plugins}%{!?with_lto:--disable-lto} \
     --without-included-gettext \
     --disable-win32-registry \
     --disable-werror \

source-builder/config/gcc-common-1.cfg

@@ -34,7 +34,7 @@ URL: 	   http://gcc.gnu.org/
 # Default LTO to off.
 #
 %ifn %{defined with_lto}
- %define with_lto 0
+ %define enable_lto 1
 %endif
 
 #
@@ -165,11 +165,8 @@ URL: 	   http://gcc.gnu.org/
 %if %{enable_fortran}
   languages="$languages,fortran"
 %endif
-%if %{enable_java}
+%if %{enable_lto}
-  languages="$languages,java"
+  languages="$languages,lto"
-%endif
-%if %{enable_objc}
-  languages="$languages,objc"
 %endif
 
   %{host_build_flags}
@@ -193,7 +190,6 @@ URL: 	   http://gcc.gnu.org/
     --disable-win32-registry \
     --disable-werror \
     --enable-version-specific-runtime-libs \
-    %{?with_lto:--enable-lto}%{!?with_lto:--disable-lto} \
     --enable-newlib-io-c99-formats \
     %{?disable_MAKEINFO:MAKEINFO=missing} \
     %{?with_iconv:--enable-newlib-iconv} \