Determining if the include file unordered_map exists failed with the following output:
Change Dir: /home/buildroot/autobuild/run/instance-1/output-1/build/sconeserver-8d1935919a2013358993a8e9dfa992cbde56e503/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/make -f Makefile cmTC_da600/fast && make[1]: Entering directory '/home/buildroot/autobuild/run/instance-1/output-1/build/sconeserver-8d1935919a2013358993a8e9dfa992cbde56e503/CMakeFiles/CMakeTmp'
/usr/bin/make  -f CMakeFiles/cmTC_da600.dir/build.make CMakeFiles/cmTC_da600.dir/build
make[2]: Entering directory '/home/buildroot/autobuild/run/instance-1/output-1/build/sconeserver-8d1935919a2013358993a8e9dfa992cbde56e503/CMakeFiles/CMakeTmp'
Building CXX object CMakeFiles/cmTC_da600.dir/CheckIncludeFile.cxx.o
/home/buildroot/autobuild/run/instance-1/output-1/host/bin/arm-none-linux-gnueabi-g++ --sysroot=/home/buildroot/autobuild/run/instance-1/output-1/host/arm-buildroot-linux-gnueabi/sysroot   -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -O2 -g0 -D_FORTIFY_SOURCE=1   -DNDEBUG -o CMakeFiles/cmTC_da600.dir/CheckIncludeFile.cxx.o -c /home/buildroot/autobuild/run/instance-1/output-1/build/sconeserver-8d1935919a2013358993a8e9dfa992cbde56e503/CMakeFiles/CMakeTmp/CheckIncludeFile.cxx
In file included from /home/buildroot/autobuild/run/instance-1/output-1/host/opt/ext-toolchain/arm-none-linux-gnueabi/include/c++/4.8.3/unordered_map:35:0,
                 from /home/buildroot/autobuild/run/instance-1/output-1/build/sconeserver-8d1935919a2013358993a8e9dfa992cbde56e503/CMakeFiles/CMakeTmp/CheckIncludeFile.cxx:1:
/home/buildroot/autobuild/run/instance-1/output-1/host/opt/ext-toolchain/arm-none-linux-gnueabi/include/c++/4.8.3/bits/c++0x_warning.h:32:2: error: #error This file requires compiler and library support for the ISO C++ 2011 standard. This support is currently experimental, and must be enabled with the -std=c++11 or -std=gnu++11 compiler options.
 #error This file requires compiler and library support for the \
  ^
CMakeFiles/cmTC_da600.dir/build.make:77: recipe for target 'CMakeFiles/cmTC_da600.dir/CheckIncludeFile.cxx.o' failed
make[2]: *** [CMakeFiles/cmTC_da600.dir/CheckIncludeFile.cxx.o] Error 1
make[2]: Leaving directory '/home/buildroot/autobuild/run/instance-1/output-1/build/sconeserver-8d1935919a2013358993a8e9dfa992cbde56e503/CMakeFiles/CMakeTmp'
Makefile:127: recipe for target 'cmTC_da600/fast' failed
make[1]: *** [cmTC_da600/fast] Error 2
make[1]: Leaving directory '/home/buildroot/autobuild/run/instance-1/output-1/build/sconeserver-8d1935919a2013358993a8e9dfa992cbde56e503/CMakeFiles/CMakeTmp'