Revert "Detect ld.so and libc.so version inconsistency during startup"

This reverts commit 6f85dbf102ad7982409ba0fe96886caeb6389fef.

Once this change hits the release branches, it will require relinking
of all statically linked applications before static dlopen works
again, for the majority of updates on release branches: The NEWS file
is regularly updated with bug references, so the __libc_early_init
suffix changes, and static dlopen cannot find the function anymore.

While this ABI check is still technically correct (we do require
rebuilding & relinking after glibc updates to keep static dlopen
working), it is too drastic for stable release branches.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

1 files changed, 0 insertions, 89 deletions

diff --git a/scripts/libc_early_init_name.py b/scripts/libc_early_init_name.py
deleted file mode 100644
index a56c200..0000000
--- a/scripts/libc_early_init_name.py
+++ /dev/null
@@ -1,89 +0,0 @@
-#!/usr/bin/python3
-# Compute the hash-based name of the __libc_early_init function.
-# Copyright (C) 2022 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/>.
-
-"""Compute the name of the __libc_early_init function, which is used
-as a protocol version marker between ld.so and libc.so.
-
-The name contains a hash suffix, and the hash changes if certain key
-files in the source tree change.  Distributions can also configure
-with --with-extra-version-id, to make the computed hash dependent on
-the package version.
-
-"""
-
-import argparse
-import hashlib
-import os
-import string
-import sys
-
-def gnu_hash(s):
-    """Computes the GNU hash of the string."""
-    h = 5381
-    for ch in s:
-        if type(ch) is not int:
-            ch = ord(ch)
-        h = (h * 33 + ch) & 0xffffffff
-    return h
-
-# Parse the command line.
-parser = argparse.ArgumentParser(description=__doc__)
-parser.add_argument('--output', metavar='PATH',
-                    help='path to header file this tool generates')
-parser.add_argument('--extra-version-id', metavar='ID',
-                    help='extra string to influence hash computation')
-parser.add_argument('inputs', metavar='PATH', nargs='*',
-                    help='files whose contents influences the generated hash')
-opts = parser.parse_args()
-
-# Obtain the blobs that affect the generated hash.
-blobs = [(opts.extra_version_id or '').encode('UTF-8')]
-for path in opts.inputs:
-    with open(path, 'rb') as inp:
-        blobs.append(inp.read())
-
-# Hash the file boundaries.
-md = hashlib.sha256()
-md.update(repr([len(blob) for blob in blobs]).encode('UTF-8'))
-
-# And then hash the file contents.  Do not hash the paths, to avoid
-# impacting reproducibility.
-for blob in blobs:
-    md.update(blob)
-
-# These are the bits used to compute the suffix.
-derived_bits = int.from_bytes(md.digest(), byteorder='big', signed=False)
-
-# These digits are used in the suffix (should result in base-62 encoding).
-# They must be valid in C identifiers.
-digits = string.digits + string.ascii_letters
-
-# Generate eight digits as a suffix.  They should provide enough
-# uniqueness (47.6 bits).
-name = '__libc_early_init_'
-for n in range(8):
-    name += digits[derived_bits % len(digits)]
-    derived_bits //= len(digits)
-
-# Write the output file.
-with open(opts.output, 'w') if opts.output else sys.stdout as out:
-    out.write('#define LIBC_EARLY_INIT_NAME {}\n'.format(name))
-    out.write('#define LIBC_EARLY_INIT_NAME_STRING "{}"\n'.format(name))
-    out.write('#define LIBC_EARLY_INIT_GNU_HASH {}\n'.format(
-        gnu_hash(name)))