Re: [Boost-build] PCH question

From: Alex Besogonov (cyberax_at_[hidden])
Date: 2006-10-16 05:08:11

Vladimir Prus wrote:
> I don't use msvc, so it's no suprised. In fact, I never though it has whole 
> program optimization. Does it work even if you compile each file separately? 
> Will linker to WPO? Or you need to pass all .cpp files at once to the 
> compiler -- like is the case with gcc.
During WPO in MSVC cpp-files are compiled to some form of intermediate 
code and actual codegeneration is performed during _linking_ (that's why 
WPO is sometimes called LTCG - Link-Time CodeGeneration).

It's possible to mix WPO and non-WPO objects without problems.

> But if /Yu is absent, will #include "pch.hpp" work?
Sure.

-- 
With respect,
             Alex Besogonov (cyberax_at_[hidden])