Downgrade boost on Ubuntu 16.04

In the past 2 days, I was tortured by boost. The default boostversion on Ubuntu 16.04 is 1.58, but I met following compile errors:

/usr/include/boost/multi_index/detail/bucket_array.hpp: In static member function ‘static std::size_t boost::multi_index::detail::bucket_array_base<_>::size_index(std::size_t)’:
/usr/include/boost/multi_index/detail/bucket_array.hpp:84:62: error: invalid use of non-lvalue array
     const std::size_t *bound=std::lower_bound(sizes,sizes+sizes_length,n);
/usr/include/boost/multi_index/detail/bucket_array.hpp:85:25: error: invalid use of non-lvalue array
/usr/include/boost/multi_index/detail/bucket_array.hpp:86:22: error: invalid use of non-lvalue array
     return bound-sizes;

I downgraded boost to 1.55; and downloaded and built it:

$ ./ --prefix=/usr/local  
$ sudo ./b2 -a -q install

This time I found the default gcc-5 could not compile successfully. So I followed this post to install gcc-6, and modified/home/nan/boost_1_55_0/tools/build/v2/user-config.jam file to use gcc-6 to compile boost:

# Configure specific gcc version, giving alternative name to use.
using gcc : 6 : g++-6 ;

Then my project can be compiled successfully. Check gcc search header file path and library path:

$ echo | gcc-6 -E -Wp,-v -
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/6/../../../../x86_64-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:

$ ldconfig -v 2>/dev/null | grep -v ^$'\t'
/usr/lib/nvidia-384/tls: (hwcap: 0x8000000000000000)
/usr/lib32/nvidia-384/tls: (hwcap: 0x8000000000000000)

You will find the fresh installed boost 1.55 (in /usr/local directory) always be found before default boost 1.58 (header files are in /usr/include/boostand libraries in /usr/lib/x86_64-linux-gnu).