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, 122 deletions

diff --git a/sysdeps/ia64/fpu/math_ldbl.h b/sysdeps/ia64/fpu/math_ldbl.h
deleted file mode 100644
index 0cb9891..0000000
--- a/sysdeps/ia64/fpu/math_ldbl.h
+++ /dev/null
@@ -1,122 +0,0 @@
-/* Manipulation of the bit representation of 'long double' quantities.
-   Copyright (C) 2000-2024 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 _MATH_LDBL_H_
-#define _MATH_LDBL_H_ 1
-
-#include <stdint.h>
-#include <endian.h>
-
-/* A union which permits us to convert between a long double and
-   three 32 bit ints.  */
-
-#if __FLOAT_WORD_ORDER == __BIG_ENDIAN
-
-typedef union
-{
-  long double value;
-  struct
-  {
-    unsigned int empty0:32;
-    int sign_exponent:16;
-    unsigned int empty1:16;
-    uint32_t msw;
-    uint32_t lsw;
-  } parts;
-} ieee_long_double_shape_type;
-
-#endif
-
-#if __FLOAT_WORD_ORDER == __LITTLE_ENDIAN
-
-typedef union
-{
-  long double value;
-  struct
-  {
-    uint32_t lsw;
-    uint32_t msw;
-    int sign_exponent:16;
-    unsigned int empty1:16;
-    unsigned int empty0:32;
-  } parts;
-} ieee_long_double_shape_type;
-
-#endif
-
-/* Get three 32 bit ints from a double.  */
-
-#define GET_LDOUBLE_WORDS(exp,ix0,ix1,d)			\
-do {								\
-  ieee_long_double_shape_type ew_u;				\
-  ew_u.value = (d);						\
-  (exp) = ew_u.parts.sign_exponent;				\
-  (ix0) = ew_u.parts.msw;					\
-  (ix1) = ew_u.parts.lsw;					\
-} while (0)
-
-/* Set a double from two 32 bit ints.  */
-
-#define SET_LDOUBLE_WORDS(d,exp,ix0,ix1)			\
-do {								\
-  ieee_long_double_shape_type iw_u;				\
-  iw_u.parts.sign_exponent = (exp);				\
-  iw_u.parts.msw = (ix0);					\
-  iw_u.parts.lsw = (ix1);					\
-  (d) = iw_u.value;						\
-} while (0)
-
-/* Get the more significant 32 bits of a long double mantissa.  */
-
-#define GET_LDOUBLE_MSW(v,d)					\
-do {								\
-  ieee_long_double_shape_type sh_u;				\
-  sh_u.value = (d);						\
-  (v) = sh_u.parts.msw;						\
-} while (0)
-
-/* Set the more significant 32 bits of a long double mantissa from an int.  */
-
-#define SET_LDOUBLE_MSW(d,v)					\
-do {								\
-  ieee_long_double_shape_type sh_u;				\
-  sh_u.value = (d);						\
-  sh_u.parts.msw = (v);						\
-  (d) = sh_u.value;						\
-} while (0)
-
-/* Get int from the exponent of a long double.  */
-
-#define GET_LDOUBLE_EXP(exp,d)					\
-do {								\
-  ieee_long_double_shape_type ge_u;				\
-  ge_u.value = (d);						\
-  (exp) = ge_u.parts.sign_exponent;				\
-} while (0)
-
-/* Set exponent of a long double from an int.  */
-
-#define SET_LDOUBLE_EXP(d,exp)					\
-do {								\
-  ieee_long_double_shape_type se_u;				\
-  se_u.value = (d);						\
-  se_u.parts.sign_exponent = (exp);				\
-  (d) = se_u.value;						\
-} while (0)
-
-#endif /* math_ldbl.h */