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Re: autoconf 2.6.2 AC_C_BIGENDIAN misdetects ppc/linux system as univers

From: Eric Blake
Subject: Re: autoconf 2.6.2 AC_C_BIGENDIAN misdetects ppc/linux system as universal
Date: Tue, 17 Jun 2008 20:14:05 -0600
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According to Karsten Hopp on 6/11/2008 5:28 AM:
| Arkadiusz Miskiewicz schrieb:

Hello, Arkadiusz, Karsten, and adding Paul as the author of this
particular change,

|> I'm having problem where my linux ppc is misdetected as universal
|> instead of big endian.
| I have a similar bugreport for Fedora at
| https://bugzilla.redhat.com/show_bug.cgi?id=449944

Stepan's comments on the Fedora bug may be most telling:

| I agree with you that this is a bug.
| The idea was that config.h contains
| #ifdef __BIG_ENDIAN__
| #  define WORDS_BIGENDIAN 1
| #endif
| so we do not need more compilations.  This is a nice optimization for
the case
| when AC_C_BIGENDIAN was called without parameters.
| But, obviously, it breaks your test case:
| AC_C_BIGENDIAN([AC_DEFINE(BIG, 1, [big])], [AC_DEFINE(LITTLE, 1, [little])])

I haven't had time to look into this further, but am at least responding
so you know it hasn't fallen into a black hole.

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
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