Add unstable.

Add a tree of unstable configurations to track recent gcc source.

rtems/config/tools/rtems-gcc-4.7.2-newlib-2.0.0-1.cfg

@@ -0,0 +1,55 @@
+#
+# GCC 4.7.2., Newlib 2.0.0
+#
+
+%include %{_configdir}/checks.cfg
+%include %{_configdir}/base.cfg
+
+%define gcc_version    4.7.2
+%define newlib_version 2.0.0
+%define mpfr_version   3.0.1
+%define mpc_version    0.8.2
+%define gmp_version    5.0.5
+
+%define with_threads 1
+%define with_plugin  0
+%define with_iconv   1
+
+#
+# AVR C++ does not work.
+#   configure: error: unable to detect exception model
+#
+%if %{_target} == avr-rtems4.11
+%define enable_cxx 0
+%endif
+
+#
+# M32C C++ does not work.
+#   gcc-4.7.2/libstdc++-v3/src/mt_allocator.cc:76: error: cast from 'void*' to 'size_t' loses precision
+#
+%if %{_target} == m32c-rtems4.11
+%define enable_cxx 0
+%endif
+
+%ifn %{defined enable_cxx}
+%define enable_cxx 1
+%endif
+
+#
+# If arm-rtems4.11 add --enable-obsolete.
+#
+%if %{_target} == arm-rtems4.11
+%define enable_obsolete 1
+%else
+%define enable_obsolete 0
+%endif
+
+#
+# The RTEMS 4.11 patches
+#
+Patch0: gcc-4.7.2-rtems4.11-20121026.diff
+
+#
+# The gcc/newlib build instructions. We use 4.7 Release 1.
+#
+%include %{_configdir}/gcc-4.7-1.cfg

rtems/config/tools/rtems-gcc-4.8-ss-newlib-2.0.0-1.cfg

@@ -0,0 +1,55 @@
+#
+# GCC 4.8.x., Newlib 2.0.0
+#
+
+%include %{_configdir}/checks.cfg
+%include %{_configdir}/base.cfg
+
+%define gcc_version    4.8-20130217
+%define newlib_version 2.0.0
+%define mpfr_version   3.0.1
+%define mpc_version    0.8.2
+%define gmp_version    5.0.5
+
+%define with_threads 1
+%define with_plugin  0
+%define with_iconv   1
+
+#
+# AVR C++ does not work.
+#   configure: error: unable to detect exception model
+#
+%if %{_target} == avr-rtems4.11
+%define enable_cxx 0
+%endif
+
+#
+# M32C C++ does not work.
+#   gcc-4.7.2/libstdc++-v3/src/mt_allocator.cc:76: error: cast from 'void*' to 'size_t' loses precision
+#
+%if %{_target} == m32c-rtems4.11
+%define enable_cxx 0
+%endif
+
+%ifn %{defined enable_cxx}
+%define enable_cxx 1
+%endif
+
+#
+# If arm-rtems4.11 add --enable-obsolete.
+#
+%if %{_target} == arm-rtems4.11
+%define enable_obsolete 1
+%else
+%define enable_obsolete 0
+%endif
+
+#
+# The RTEMS 4.11 patches
+#
+Source0: ftp://gcc.gnu.org/pub/gcc/snapshots/%{gcc_version}/gcc-%{gcc_version}.tar.bz2
+
+#
+# The gcc/newlib build instructions. We use 4.7 Release 1.
+#
+%include %{_configdir}/gcc-4.8-1.cfg

rtems/config/unstable/4.11/rtems-arm.bset

@@ -0,0 +1,20 @@
+#
+# Tools Set for RTEMS ARM 4.11 Unstable
+#
+
+%define _target arm-rtems4.11
+
+%define release 1
+
+#
+# The RTEMS 4.11 base defines.
+#
+%include rtems-4.11-base.bset
+
+#
+# Tools configuration.
+#
+expat-2.1.0-1
+tools/rtems-binutils-2.22-1
+tools/rtems-gcc-4.8-ss-newlib-2.0.0-1
+tools/rtems-gdb-7.5-1