Re: [Boost-build] [vc8] Recently added -Op compiler option

From: Vladimir Prus (ghost_at_[hidden])
Date: 2006-03-07 02:58:17

On Monday 06 March 2006 19:48, Bojan Resnik wrote:
> >   Thanks, it seems ok now.
> > --
> > Bojan Resnik
>
>   Apologies, my mistake - I accidentally compiled with VC7.1.
>   In fact, the problem is still there, and it seems that the flag is
> placed in the wrong  part of if condition:
>
> --------
>     if [ MATCH ^([67]\\.) : $(version) ]
>     {
>        # ... Stripped
>
>         # Improve floating-point accuracy. Otherwise, some of C++ Boost's
>         # "math" tests will fail.
>         flags msvc.compile CFLAGS : /Op ;
>     }
> -------
>
>   This will set the /Op flag when the version does not begin with 6
> nor 7. 

I must be missing something, as my testing indicates otherwise:

  $ bjam -f-
  ECHO [ MATCH ^([67]\\.) : 7.1 ] ;
  7.

So, given "7.1" the MATCH will return non-empty string, and the condition 
should be taked, executing "flags... /Op".

Did you configure msvc with explicit version, like:

  using msvc : 7.1 : ........ ; 

-  Volodya