[Boost-build] Conditional macro definition

From: K. Noel Belcourt (kbelco_at_[hidden])
Date: 2007-01-12 15:26:57

Hi,

I have a macro that I need to define in the project requirements for  
a number of toolsets (darwin, gcc, intel, pgi, pathscale, sgi, sun)  
but I need to suppress the macro definition for only one toolset  
(vacpp).

Is there a clean way of doing this rather than the brute force  
approach?  I tried this syntax to tell bjam to ignore the macro on  
vacpp and on all other platforms define it, but this doesn't work.

<toolset>/vacpp:<define>PETSC_HAVE_FORTRAN_UNDERSCORE

Is the brute force solution (listing each <toolset> explicitly) the  
only approach?  I have a lot of macros that behave like this,  
undefined on some toolsets, defined on others.

-- Noel Belcourt