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

[Neil Booth <neil at daikokuya dot co dot uk>]

frey waid wrote:-

> i tried that but it doesn't work consistently with the newer prescan semantics. 
> for example, if i did this:

Prescan semantics haven't changed.  Apart from removal of the odd
segfault ;-)

> #include COMP_INC(me, mips/hello.h)
> 
> you'd think it'd expand with the below method:
> 
> #include "me/include/mips/hello.h"
> 
> unfortunately, mips is a predefined macro.  so it expands to "1".  is there a
> work around for this without having to undefine it?

No, that's the way C works, because mips is lexed as a token in its own
right.  You need to use a different path, or #undef mips.  Or, latest
versions of GCC won't invade your namespace like this with -ansi.  Prior
versions of GCC were somewhat unpredictable.

Neil.