[Boost-build] PCH question

From: Vladimir Prus (ghost_at_[hidden])
Date: 2006-10-15 15:30:10

I was thinking more about PCH support. While it can decrease compilation time 
for toolsets with PCH support, having a central header including all STL and 
all Boost, and all Windows headers will reduce compilation time when PCH is 
not available. How about making pch generators set a macro, has 
BOOST_BUILD_PCH_ENABLED, so that client code can use this:

   #if defined(BOOST_BUILD_PCH_ENABLED)
   #include "pch.h"
   #endif

Then, if toolset lacks PCH support, the pch header won't be included at all.

Thoughts?

- Volodya