Re: [Tack-devel] ACK compiles on NetBSD-macppc, sort of...

[Perry E. M. <pe...@pi...>]

"Gregory T. (tim) Kelly" <gt...@di...> writes:
> "/usr/include/sys/cdefs.h", line 245: error: unknown control
>
> The line in cdefs.h that is failing is
>
> #error "No function renaming possible"
>
> within
>
>  #if !defined(_STANDALONE) && !defined(_KERNEL)
> #ifdef __GNUC__
> #define __RENAME(x)     ___RENAME(x)
> #else
> #ifdef __lint__
> #define __RENAME(x)     __symbolrename(x)
> #else
> #error "No function renaming possible"
> #endif /* __lint__ */
> #endif /* __GNUC__ */
> #else /* _STANDALONE || _KERNEL */
> #define __RENAME(x)     no renaming in kernel or standalone environment
> #endif

Congratulations. You've hit NetBSD's symbol renaming stuff.

Unfortunately, in order to handle API versioning, it is kind of
necessary for whatever compiler one uses under NetBSD to be able to
deal with symbol renaming in order to select the appropriate version
of the C library call in question -- no versioning support means you
have no hope at all of linking against our C library.

Luckily, symbol renaming is fairly easy to implement. It requires only
the most minor of namespace tricks. Have a look at, for example,
sys/cdefs_aout.h or (preferably) sys/cdefs_elf.h for some clues on
what is being done.

Generally speaking, it should be pretty straightforward to make the
whole thing work right.

Perry