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libstdc++-v3 won't build on IRIX 5.2


While bootstrapping the latest snapshot of GCC on IRIX 5.2, I
eventually get:

../include/bits/ctype_base.h:44: `_ISupper' was not declared in this scope
../include/bits/ctype_base.h:45: `_ISlower' was not declared in this scope
../include/bits/ctype_base.h:46: `_ISalpha' was not declared in this scope
../include/bits/ctype_base.h:47: `_ISdigit' was not declared in this scope
../include/bits/ctype_base.h:48: `_ISxdigit' was not declared in this scope
../include/bits/ctype_base.h:49: `_ISspace' was not declared in this scope
../include/bits/ctype_base.h:50: `_ISprint' was not declared in this scope
../include/bits/ctype_base.h:51: `_ISgraph' was not declared in this scope
../include/bits/ctype_base.h:52: `_IScntrl' was not declared in this scope
../include/bits/ctype_base.h:53: `_ISpunct' was not declared in this scope
../include/bits/ctype_base.h:54: `_ISalnum' was not declared in this scope

I see these macros aren't available on IRIX 6.3 either.  Is there any
reason for not using generic/ctype_base.h, given that most IRIX
versions don't have these macros available?

Alternatively, we could probably #ifndef/#define these macros on
the irix-specific version of ctype_base.h.

Thoughts?

-- 
Alexandre Oliva   Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer                  aoliva@{cygnus.com, redhat.com}
CS PhD student at IC-Unicamp        oliva@{lsd.ic.unicamp.br, gnu.org}
Free Software Evangelist    *Please* write to mailing lists, not to me

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