Re: [boost] Defining compilers suggestion

From: David Abrahams (dave_at_[hidden])
Date: 2005-07-12 16:59:39

Tobias Schwinger <tschwinger_at_[hidden]> writes:

> Jonathan Turkanis wrote:
>> 
>> The ability to accommodate these unlikely scenarios has to be balanced against
>> usability. If a test for GCC with major version < 3 has to use "3000000,"
>> chances are good that a test will be misspelled and a needed workaround will not
>> be applied.
>> 
>
> It is possible to put an expression to calculate the 3000000 in this case into a 
> macro:
>
>      #define BOOST_VERSION(major,minor,patchlvl) \
>         (major * 1000000 + minor * 1000 + patchlvl)
>
>      #define BOOST_GCC \
>         BOOST_GCC_VERSION(__GNUC__,__GNUC_MINOR__,__GNUC_PATCHLEVEL__)
>
> Example:
>
>      #if BOOST_WORKAROUND(BOOST_GCC,< BOOST_VERSION(3,2,3))
>      // ...
>      #endif

Or we could arrange to write:

     #if BOOST_WORKAROUND(BOOST_GCC,< 3,2,3)

-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com