Failed to build

[TeamLoonie]

I have followed all instructions that I could find but when I try to gbuild I get the following error and I have no idea what is wrong and how to fix it. Please help anyone. I am loosing my mind over this.

cc1plus: error: unrecognized command line option ‘-std=c++11’
...failed gcc.compile.c++ bin.v2/libs/thread/build/gcc-mingw-4.6/release/address-model-64/binary-format-pe/link-static/runtime-link-static/target-os-windows/threadapi-win32/threading-multi/win32/tss_pe.o...
...skipped <pbin.v2/libs/thread/build/gcc-mingw-4.6/release/address-model-64/binary-format-pe/link-static/runtime-link-static/target-os-windows/threadapi-win32/threading-multi>libboost_thread_win32-mt-s.a(clean) for lack of <pbin.v2/libs/thread/build/gcc-mingw-4.6/release/address-model-64/binary-format-pe/link-static/runtime-link-static/target-os-windows/threadapi-win32/threading-multi>win32/thread.o...
...skipped <pbin.v2/libs/thread/build/gcc-mingw-4.6/release/address-model-64/binary-format-pe/link-static/runtime-link-static/target-os-windows/threadapi-win32/threading-multi>libboost_thread_win32-mt-s.a for lack of <pbin.v2/libs/thread/build/gcc-mingw-4.6/release/address-model-64/binary-format-pe/link-static/runtime-link-static/target-os-windows/threadapi-win32/threading-multi>win32/thread.o...
...skipped <pstage/lib>libboost_thread_win32-mt-s.a for lack of <pbin.v2/libs/thread/build/gcc-mingw-4.6/release/address-model-64/binary-format-pe/link-static/runtime-link-static/target-os-windows/threadapi-win32/threading-multi>libboost_thread_win32-mt-s.a...
...failed updating 48 targets...
...skipped 27 targets...
...updated 81 targets...
make: *** [/home/ubuntu/build/LoonieCoin/depends/work/build/x86_64-w64-mingw32/boost/1_59_0-105d78f43ae/./.stamp_built] Error 1
make: Leaving directory `/home/ubuntu/build/LoonieCoin/depends'