I'm trying to build Boost 1.60 with Visual Studio 2015 Update 1 in 64-bit mode but it seems to be ignoring the address-model=64 parameter and always builds a 32-bit version (I called b2 from the VS2015 Native tools for x64 command prompt):

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C:\Users\Tiago\code\boost_1_60_0>b2 --toolset=msvc-14.0 variant=release link=static threading=multi address-model=64 architecture=x86

Performing configuration checks

    - 32-bit                   : yes

    - arm                      : no

    - mips1                    : no

    - power                    : no

    - sparc                    : no

    - x86                      : yes

....

C:\Users\Tiago\code\boost_1_60_0>cl

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I saw in some ond discussion mentions to explicitly select the compiler version (I also have VS2010 and VS2012 installed) and environment variables batch file (in the project-config.jam file) but this didn't help either.

Any help is really appreciated.

Best regards,

Tiago Gehring