Re: [Boost-testing] [mslater] mingw link failures

From: Beman Dawes (bdawes_at_[hidden])
Date: 2005-12-07 13:34:53

"Martin Slater" <mslater_at_[hidden]> wrote in message 
news:438D9BEC.4040105_at_hellinc.net...
> Eric Niebler wrote:
>> For the [mslater] mingw tests, xpressive is failing due to what looks to
>> be a configuration problem. See http://tinyurl.com/87dg9:
>>
>> c:/mingw/bin/../lib/gcc-lib/mingw32/3.2.3/../../../libmingw32.a(main.o)(.text+0x97):main.c:
>> undefined reference to `WinMain_at_16'
>>
>> FWIW, xpressive's tests pass for the Bronek mingw toolset.
>
>
> Anyone got any ideas what could cause this?

The g++ command line is missing -L"c:/cygwin/lib/mingw", or whatever your 
appropriate path is.

The obvious workaround is to add an environmental variable:

    set MINGW_STDLIB_DIRECTORY=c:\cygwin\lib\mingw

That almost works, but also adds a spurious -L"" to the g++ command line. If 
you remove the -L"" by hand, the g++ command then works OK.

We need help from a Boost.Build expert:

* Why does MINGW_STDLIB_DIRECTORY have to be set by hand? Is the problem 
that cygwin installs the mingw libraries in lib\mingw rather than lib? Do we 
need a separate cygwin-mingw toolset?

* Where is the spurious -L"" coming from and how do we get rid of it?

 Rene?

--Beman