why _LIBC for isomac?

[Ulrich Drepper]

Roland McGrath wrote:
> Why does isomac use -D_LIBC for its header examinations at all?  That
> doesn't seem appropriate, since it should be testing the headers as seen by
> a user program.  If _LIBC is needed for some reason in the libc build
> environment, it should use -DNOT_IN_libc to avoid the internal magic.

I don not remember anymore why it was added but there was a reason.  You 
probably can rediscover it by simply removing the #define.

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