[Boost-build] "Ambiguous key" error when building on Windows, not Linux or OS X.

Subject: [Boost-build] "Ambiguous key" error when building on Windows, not Linux or OS X.
From: Tom (tabsoftwareconsulting_at_[hidden])
Date: 2015-12-03 18:11:30

Hi,

I have run into an issue trying to build a custom toolset on Windows that
works on Linux and OS X.  I've created an issue as well as a workaround
for the problem.

Please see the issue at:

   https://github.com/boostorg/build/issues/111

I wonder if anyone might have an idea what is happening here.

Thanks,
Tom