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Subject: Re: [boost] [Preprocessor] Can we generate token for #include programmatically ?
From: Stewart, Robert (Robert.Stewart_at_[hidden])
Date: 2009-05-15 10:18:02

Joel Falcou wrote:
On Friday, May 15, 2009 10:07 AM
> Joel Falcou wrote:
> > Here is what I had in mind
> >
> > #define BASE foo.hpp
> > #include
> >
> BOOST_PP_STRINGIZE(BOOST_PP_CAT(nt2/support/numeric/functions/
> scalar/,BASE))
> >
> > It fails because it seems we can't paste stuff ending with / ...
> OK, found a solution that works on gcc 4.3 ... not sure why :
> #define SLASH() /
> #define BASE nt2/support/numeric/functions
> #include BOOST_PP_STRINGIZE(BASE SLASH()abs.hpp)
> this actually works for whatever reason ... Can anyone see if
> this ugly hack works on VC or other compilers.

It works on GCC 3.3.3 and 4.1.2.

It fails on VC8:

fatal error C1083: Cannot open include file: 'nt2/support/numeric/functions /abs.hpp': No such file or directory

Notice the space in the pathname.

Rob Stewart robert.stewart_at_[hidden]
Software Engineer, Core Software using std::disclaimer;
Susquehanna International Group, LLP

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