How To Compile Boost Using g++ -std=c++11 From MinGW

To compile Boost using g++ -std=c++11 from MinGW, do the following:

1. Ensure that MinGW is installed at C:\MinGW\
2. Launch a regular Windows Command Prompt, not a MSys Command Prompt:
   cmd
3. Ensure that the PATH Environment Variable contains C:\MinGW\bin\:
   set PATH=C:\MinGW\bin;%PATH%
4. Change directories to Boost:
   cd C:\boost_1_54_0\
5. Pass in mingw to bootstrap.bat:
   bootstrap.bat mingw
6. Call b2.exe:
   b2.exe toolset=gcc cxxflags="-std=c++11" --build-type=complete stage

This will build Boost using the GCC toolset in MinGW with the g++ flags set to -std=c++11.

NOTE:  This post was tested by compiling Boost 1.54.0 ( http://www.boost.org ) with GCC version 4.8.1 from MinGW ( http://www.mingw.org ).

The output from b2.exe using the flag cxxflags="-std=c++11" ended with:
...failed updating 156 targets...
...skipped 396 targets...
...updated 4783 targets...
Additionally, only 284 stage\lib files were built.

However, the output without using that flag ended with:
...failed updating 24 targets...
...skipped 40 targets...
...updated 5271 targets...
Additionally, 428 stage\lib files were built.

Therefore, not all stage\lib files are built using the flag cxxflags="-std=c++11".