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Re: preprocessor/9650: string literal contactenation doesn't work with #include

From: Neil Booth <neil at daikokuya dot co dot uk>
To: frey waid <waid at cisco dot com>
Cc: neil at gcc dot gnu dot org, gcc-bugs at gcc dot gnu dot org, gcc-prs at gcc dot gnu dot org,nobody at gcc dot gnu dot org, gcc-gnats at gcc dot gnu dot org
Date: Mon, 10 Feb 2003 23:03:52 +0000
Subject: Re: preprocessor/9650: string literal contactenation doesn't work with #include
References: <20030210225732.10027.qmail@sources.redhat.com> <3E482F5D.C1E2DF60@cisco.com> <20030210230225.GA19572@daikokuya.co.uk>

Neil Booth wrote:-

> frey waid wrote:-
> 
> > that's what i was doing before.  so i had this:
> > 
> > #include COMP_INC(comp,file)
> > 
> > #define COMP_INC(comp,file)   #comp "/include/" #file
> > 
> > do you have another method in mind?
> 
> Sure 8-)
> 
> #include COMP_INC (comp, file)
> 
> #define COMP_INC(comp, file) COMP (comp, file)
> #define COMP(prefix, suffix) str(comp/include/file)

Aargh!  Close but no cigar.

#define COMP(prefix, suffix) str(prefix/include/suffix)

> #define str(x) #x
> 
> Not tested, but you get the idea.
 
Neil.

References:
- Re: preprocessor/9650: string literal contactenation doesn't work with #include
  - From: neil
- Re: preprocessor/9650: string literal contactenation doesn't work with #include
  - From: frey waid
- Re: preprocessor/9650: string literal contactenation doesn't work with #include
  - From: Neil Booth

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