[Boost-testing] Adding regression tests for mingw(-64)/gcc and clang on Windows

Subject: [Boost-testing] Adding regression tests for mingw(-64)/gcc and clang on Windows
From: Edward Diener (eldiener_at_[hidden])
Date: 2015-08-11 16:38:02

For a long time now we have had no regression tests for mingw/gcc or 
clang targeting gcc on Windows. The only regression tests for Windows 
are for various releases of VC++.

I have limited resources but I have a laptop usually sitting idle, 
except for occasional travel where I take it with me, and I am set up to 
run tests on that machine for mingw/gcc and clang on Windows.

However mingw/gcc and clang have limitations when running tests in that, 
both relying on various mingw/gcc implementations, the path to the 
implementation must be added at the beginning of the PATH before running 
any of the tests. I have already argued with the mingw-64 people about 
this necessity but they are adamant that this should be the case even 
just to compile/link properly ( and have setup their directory structure 
to enforce it ), and I don't want to waste my breath further with them.

Currently I have a batch file that does that for me when running tests 
for any particular library, but I don't know how that can be achieved 
when running the regression tests unless possibly I run regression tests 
for only a single toolset at a time, and manipulate the PATH accodingly. 
But that is really time consuming since evidently all of Boost must be 
downloaded to the run directory each time. Is there an easy solution to 
this or do I have to look at run.py and try modify it accordingly ( I 
know Python well ) ?

Also I notice on the Boost web site regression test page ( 
http://www.boost.org/development/running_regression_tests.html ) that 
the options of the regression tests are somewhat documented but none of 
the commands are documented. Is there further documentation about the 
regression test commands anywhere ?