Remove ia64-linux-gnu

Linux 6.7 removed ia64 from the official tree [1], following the general
principle that a glibc port needs upstream support for the architecture
in all the components it depends on (binutils, GCC, and the Linux
kernel).

Apart from the removal of sysdeps/ia64 and sysdeps/unix/sysv/linux/ia64,
there are updates to various comments referencing ia64 for which removal
of those references seemed appropriate. The configuration is removed
from README and build-many-glibcs.py.

The CONTRIBUTED-BY, elf/elf.h, manual/contrib.texi (the porting
mention), *.po files, config.guess, and longlong.h are not changed.

For Linux it allows cleanup some clone2 support on multiple files.

The following bug can be closed as WONTFIX: BZ 22634 [2], BZ 14250 [3],
BZ 21634 [4], BZ 10163 [5], BZ 16401 [6], and BZ 11585 [7].

[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=43ff221426d33db909f7159fdf620c3b052e2d1c
[2] https://sourceware.org/bugzilla/show_bug.cgi?id=22634
[3] https://sourceware.org/bugzilla/show_bug.cgi?id=14250
[4] https://sourceware.org/bugzilla/show_bug.cgi?id=21634
[5] https://sourceware.org/bugzilla/show_bug.cgi?id=10163
[6] https://sourceware.org/bugzilla/show_bug.cgi?id=16401
[7] https://sourceware.org/bugzilla/show_bug.cgi?id=11585
Reviewed-by: Carlos O'Donell <carlos@redhat.com>

1 files changed, 0 insertions, 119 deletions

diff --git a/sysdeps/ia64/bits/floatn.h b/sysdeps/ia64/bits/floatn.h
deleted file mode 100644
index 297c4d2c6a..0000000000
--- a/sysdeps/ia64/bits/floatn.h
+++ /dev/null
@@ -1,119 +0,0 @@
-/* Macros to control TS 18661-3 glibc features on ia64.
-   Copyright (C) 2017-2024 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <https://www.gnu.org/licenses/>.  */
-
-#ifndef _BITS_FLOATN_H
-#define _BITS_FLOATN_H
-
-#include <features.h>
-
-/* Defined to 1 if the current compiler invocation provides a
-   floating-point type with the IEEE 754 binary128 format, and this
-   glibc includes corresponding *f128 interfaces for it.  The required
-   libgcc support was added some time after the basic compiler
-   support.  */
-#if __GNUC_PREREQ (4, 4)
-# define __HAVE_FLOAT128 1
-#else
-# define __HAVE_FLOAT128 0
-#endif
-
-/* Defined to 1 if __HAVE_FLOAT128 is 1 and the type is ABI-distinct
-   from the default float, double and long double types in this glibc.  */
-#if __HAVE_FLOAT128
-# define __HAVE_DISTINCT_FLOAT128 1
-#else
-# define __HAVE_DISTINCT_FLOAT128 0
-#endif
-
-/* Defined to 1 if the current compiler invocation provides a
-   floating-point type with the right format for _Float64x, and this
-   glibc includes corresponding *f64x interfaces for it.  */
-#define __HAVE_FLOAT64X 1
-
-/* Defined to 1 if __HAVE_FLOAT64X is 1 and _Float64x has the format
-   of long double.  Otherwise, if __HAVE_FLOAT64X is 1, _Float64x has
-   the format of _Float128, which must be different from that of long
-   double.  */
-#define __HAVE_FLOAT64X_LONG_DOUBLE 1
-
-#ifndef __ASSEMBLER__
-
-/* Defined to concatenate the literal suffix to be used with _Float128
-   types, if __HAVE_FLOAT128 is 1. */
-# if __HAVE_FLOAT128
-#  if !__GNUC_PREREQ (7, 0) || (defined __cplusplus && !__GNUC_PREREQ (13, 0))
-/* The literal suffix f128 exists only since GCC 7.0.  */
-#   define __f128(x) x##q
-#  else
-#   define __f128(x) x##f128
-#  endif
-# endif
-
-/* Defined to a complex binary128 type if __HAVE_FLOAT128 is 1.  */
-# if __HAVE_FLOAT128
-#  if !__GNUC_PREREQ (7, 0) || (defined __cplusplus && !__GNUC_PREREQ (13, 0))
-/* Add a typedef for older GCC compilers which don't natively support
-   _Complex _Float128.  */
-typedef _Complex float __cfloat128 __attribute__ ((__mode__ (__TC__)));
-#   define __CFLOAT128 __cfloat128
-#  else
-#   define __CFLOAT128 _Complex _Float128
-#  endif
-# endif
-
-/* The remaining of this file provides support for older compilers.  */
-# if __HAVE_FLOAT128
-
-/* The type _Float128 exists only since GCC 7.0.  */
-#  if !__GNUC_PREREQ (7, 0) || (defined __cplusplus && !__GNUC_PREREQ (13, 0))
-typedef __float128 _Float128;
-#  endif
-
-/* __builtin_huge_valf128 doesn't exist before GCC 7.0.  */
-#  if !__GNUC_PREREQ (7, 0)
-#   define __builtin_huge_valf128() ((_Float128) __builtin_huge_val ())
-#  endif
-
-/* Older GCC has only a subset of built-in functions for _Float128 on
-   ia64, and __builtin_infq is not usable in static initializers.
-   Converting a narrower sNaN to _Float128 produces a quiet NaN, so
-   attempts to use _Float128 sNaNs will not work properly with older
-   compilers.  */
-#  if !__GNUC_PREREQ (7, 0)
-#   define __builtin_copysignf128 __builtin_copysignq
-#   define __builtin_fabsf128 __builtin_fabsq
-#   define __builtin_inff128() ((_Float128) __builtin_inf ())
-#   define __builtin_nanf128(x) ((_Float128) __builtin_nan (x))
-#   define __builtin_nansf128(x) ((_Float128) __builtin_nans (x))
-#  endif
-
-/* In math/math.h, __MATH_TG will expand signbit to __builtin_signbit*,
-   e.g.: __builtin_signbitf128, before GCC 6.  However, there has never
-   been a __builtin_signbitf128 in GCC and the type-generic builtin is
-   only available since GCC 6.  */
-#  if !__GNUC_PREREQ (6, 0)
-#   define __builtin_signbitf128 __signbitf128
-#  endif
-
-# endif
-
-#endif /* !__ASSEMBLER__.  */
-
-#include <bits/floatn-common.h>
-
-#endif /* _BITS_FLOATN_H */