Re: Darwin assert.h / shared libgcc mess

[Zack Weinberg <zack at codesourcery dot com>]

Geoffrey Keating <geoffk@geoffk.org> writes:

>> 2) Put __eprintf back into the shared libgcc, as an exported symbol,
>>    for all !inhibit_libc targets, so that fixincludes can rely on its
>>    being there.  (If we instead use __assert, then __eprintf will
>>    remain a static-library-only backward compatibility symbol.)
>
> Is this really necessary?  I'd rather have __eprintf linked into only
> those apps that need it.

Right now, any shared library that uses assert will fail to link.
_Something_ has to be done.  I'm open to alternative suggestions.

>> 5) Determine for certain whether or not Darwin ld supports symbol
>>    versioning.  Correct t-slibgcc-darwin to use the appropriate mkmap
>>    file and to actually apply the map to the generated libgcc.dylib.
>
> The Darwin ld does not support symbol versioning.  You can safely delete
> any versioning files for Darwin (so long as it doesn't break the makefiles).

Okay, so t-slibgcc-darwin ought to be using mkmap-flat.awk and
-exported_symbols_list.  Thanks for the clarification.

>> i) Nudzh the Darwin developers to put __assert in libSystem and
>>    provide a correct /usr/include/assert.h (y'all can just copy it
>>    from FreeBSD!  Only with attribute noreturn, please).
>
> In Tiger, /usr/include/assert.h will be provided by Libc, not the
> compiler, and it will use __assert.

Good.

zw