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* [ptxdist] [PATCH] ldd: switch to version provided by glibc
@ 2025-09-17  9:51 Holger Assmann
  2025-09-19  5:39 ` Michael Olbrich
  0 siblings, 1 reply; 2+ messages in thread
From: Holger Assmann @ 2025-09-17  9:51 UTC (permalink / raw)
  To: ptxdist; +Cc: Holger Assmann

Until now, the ldd version installed on the target has been a script
copied from projectroot. Besides not having been updated since v2.7
(we are at v2.40+ now), this approach does not account for the various
architectures PTXdist can build BSPs for.

We already have access to a recent version of ldd, as it comes with
glibc from the active toolchain. We can hence drop the local ldd script
and directly install the tool from there.

Signed-off-by: Holger Assmann <h.assmann@pengutronix.de>
---
 projectroot/usr/bin/ldd | 213 ----------------------------------------
 rules/glibc.in          |  12 +++
 rules/glibc.make        |   4 +
 rules/ldd.in            |   7 --
 rules/ldd.make          |  38 -------
 5 files changed, 16 insertions(+), 258 deletions(-)
 delete mode 100644 projectroot/usr/bin/ldd
 delete mode 100644 rules/ldd.in
 delete mode 100644 rules/ldd.make

diff --git a/projectroot/usr/bin/ldd b/projectroot/usr/bin/ldd
deleted file mode 100644
index b3629a42f..000000000
--- a/projectroot/usr/bin/ldd
+++ /dev/null
@@ -1,213 +0,0 @@
-#! /bin/sh
-# Copyright (C) 1996-2004, 2005, 2006, 2007 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, write to the Free
-# Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-# 02111-1307 USA.
-
-
-# This is the `ldd' command, which lists what shared libraries are
-# used by given dynamically-linked executables.  It works by invoking the
-# run-time dynamic linker as a command and setting the environment
-# variable LD_TRACE_LOADED_OBJECTS to a non-empty value.
-
-# We should be able to find the translation right at the beginning.
-TEXTDOMAIN=libc
-TEXTDOMAINDIR=/usr/share/locale
-
-RTLDLIST="/lib/ld-linux.so.3 /lib/ld-linux.so.2 /lib64/ld-linux-x86-64.so.2 /lib/ld.so.1 /lib64/ld64.so.1"
-warn=
-bind_now=
-verbose=
-filename_magic_regex="((^|/)lib|.so$)"
-
-while test $# -gt 0; do
-  case "$1" in
-  --vers | --versi | --versio | --version)
-    echo 'ldd (GNU libc) 2.7'
-    printf $"Copyright (C) %s Free Software Foundation, Inc.
-This is free software; see the source for copying conditions.  There is NO
-warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-" "2007"
-    printf $"Written by %s and %s.
-" "Roland McGrath" "Ulrich Drepper"
-    exit 0
-    ;;
-  --h | --he | --hel | --help)
-    echo $"Usage: ldd [OPTION]... FILE...
-      --help              print this help and exit
-      --version           print version information and exit
-  -d, --data-relocs       process data relocations
-  -r, --function-relocs   process data and function relocations
-  -u, --unused            print unused direct dependencies
-  -v, --verbose           print all information
-For bug reporting instructions, please see:
-<http://www.gnu.org/software/libc/bugs.html>."
-    exit 0
-    ;;
-  -d | --d | --da | --dat | --data | --data- | --data-r | --data-re | \
-  --data-rel | --data-relo | --data-reloc | --data-relocs)
-    warn=yes
-    shift
-    ;;
-  -r | --f | --fu | --fun | --func | --funct | --functi | --functio | \
-  --function | --function- | --function-r | --function-re | --function-rel | \
-  --function-relo | --function-reloc | --function-relocs)
-    warn=yes
-    bind_now=yes
-    shift
-    ;;
-  -v | --verb | --verbo | --verbos | --verbose)
-    verbose=yes
-    shift
-    ;;
-  -u | --u | --un | --unu | --unus | --unuse | --unused)
-    unused=yes
-    shift
-    ;;
-  --v | --ve | --ver)
-    echo >&2 $"ldd: option \`$1' is ambiguous"
-    exit 1
-    ;;
-  --)		# Stop option processing.
-    shift; break
-    ;;
-  -*)
-    echo >&2 'ldd:' $"unrecognized option" "\`$1'"
-    echo >&2 $"Try \`ldd --help' for more information."
-    exit 1
-    ;;
-  *)
-    break
-    ;;
-  esac
-done
-
-nonelf ()
-{
-  # Maybe extra code for non-ELF binaries.
-  return 1;
-}
-
-add_env="LD_TRACE_LOADED_OBJECTS=1 LD_WARN=$warn LD_BIND_NOW=$bind_now"
-add_env="$add_env LD_LIBRARY_VERSION=\$verify_out"
-add_env="$add_env LD_VERBOSE=$verbose"
-if test "$unused" = yes; then
-  add_env="$add_env LD_DEBUG=\"$LD_DEBUG${LD_DEBUG:+,}unused\""
-fi
-
-# The following use of cat is needed to make ldd work in SELinux
-# environments where the executed program might not have permissions
-# to write to the console/tty.  But only bash 3.x supports the pipefail
-# option, and we don't bother to handle the case for older bash versions.
-if set -o pipefail 2> /dev/null; then
-  try_trace() {
-    eval $add_env '"$@"' | cat
-  }
-else
-  try_trace() {
-    eval $add_env '"$@"'
-  }
-fi
-
-case $# in
-0)
-  echo >&2 'ldd:' $"missing file arguments"
-  echo >&2 $"Try \`ldd --help' for more information."
-  exit 1
-  ;;
-1)
-  single_file=t
-  ;;
-*)
-  single_file=f
-  ;;
-esac
-
-result=0
-for file do
-  # We don't list the file name when there is only one.
-  test $single_file = t || echo "${file}:"
-  case $file in
-  */*) :
-       ;;
-  *) file=./$file
-     ;;
-  esac
-  if test ! -e "$file"; then
-    echo "ldd: ${file}:" $"No such file or directory" >&2
-    result=1
-  elif test ! -f "$file"; then
-    echo "ldd: ${file}:" $"not regular file" >&2
-    result=1
-  elif test -r "$file"; then
-    if test ! -x "$file" && eval echo "$file" \
-	| egrep -v "$filename_magic_regex" > /dev/null; then
-	echo 'ldd:' $"warning: you do not have execution permission for"\
-	    "\`$file'" >&2
-    fi
-    RTLD=
-    ret=1
-    for rtld in ${RTLDLIST}; do
-      if test -x $rtld; then
-	verify_out=`${rtld} --verify "$file" 2>/dev/null`
-        ret=$?
-	case $ret in
-	[02]) RTLD=${rtld}; break;;
-	esac
-      fi
-    done
-    case $ret in
-    0)
-      # If the program exits with exit code 5, it means the process has been
-      # invoked with __libc_enable_secure.  Fall back to running it through
-      # the dynamic linker.
-      if test -x "$file"; then
-	try_trace "$file"
-      else
-	try_trace "${RTLD}" "$file"
-      fi
-      rc=$?
-      if [ $rc = 5 ]; then
-	try_trace "$RTLD" "$file"
-	rc=$?
-      fi
-      [ $rc = 0 ] || result=1
-      ;;
-    1)
-      # This can be a non-ELF binary or no binary at all.
-      nonelf "$file" || {
-	echo $"	not a dynamic executable"
-	result=1
-      }
-      ;;
-    2)
-      try_trace "$RTLD" "$file" || result=1
-      ;;
-    *)
-      echo 'ldd:' ${RTLD} $"exited with unknown exit code" "($ret)" >&2
-      exit 1
-      ;;
-    esac
-  else
-    echo 'ldd:' $"error: you do not have read permission for" "\`$file'" >&2
-    result=1
-  fi
-done
-
-exit $result
-# Local Variables:
-#  mode:ksh
-# End:
diff --git a/rules/glibc.in b/rules/glibc.in
index 3d57cd2c6..b63621395 100644
--- a/rules/glibc.in
+++ b/rules/glibc.in
@@ -45,6 +45,18 @@ config GLIBC_LD
 	  You don't want to deselect this, unless you have a pure
 	  static system. This is why this options hasn't a prompt.
 
+config GLIBC_LDD
+	bool
+	prompt "Install ldd from glibc"
+	select GLIBC_LD
+	help
+	  ldd prints the shared objects (shared libraries) required
+	  by each program or shared object specified on the command
+	  line.
+
+	  Selecting this installs the ldd version deployed with the
+	  toolchain for the active platform.
+
 config GLIBC_C
 	bool
 	default y
diff --git a/rules/glibc.make b/rules/glibc.make
index f90f2d8f0..58fafa070 100644
--- a/rules/glibc.make
+++ b/rules/glibc.make
@@ -176,6 +176,10 @@ ifdef PTXCONF_GLIBC_LDCONFIG_RC_ONCE
 		/etc/rc.once.d/ldconfig)
 endif
 
+ifdef PTXCONF_GLIBC_LDD
+	@$(call install_copy_toolchain_usr, glibc, bin/ldd)
+endif
+
 ifdef PTXCONF_GLIBC_I18N_BIN_LOCALE
 	@$(call install_copy_toolchain_usr, glibc, bin/locale)
 endif
diff --git a/rules/ldd.in b/rules/ldd.in
deleted file mode 100644
index 66422c2ab..000000000
--- a/rules/ldd.in
+++ /dev/null
@@ -1,7 +0,0 @@
-## SECTION=debug_tools
-
-config LDD
-	tristate
-	prompt "ldd"
-	help
-	  ldd prints shared library dependencies of object files
diff --git a/rules/ldd.make b/rules/ldd.make
deleted file mode 100644
index ac9bbc3fa..000000000
--- a/rules/ldd.make
+++ /dev/null
@@ -1,38 +0,0 @@
-# -*-makefile-*-
-#
-# Copyright (C) 2006 by Sascha Hauer
-#           (C) 2010 by Michael Olbrich <m.olbrich@pengutronix.de>
-#
-# For further information about the PTXdist project and license conditions
-# see the README file.
-#
-
-#
-# We provide this package
-#
-PACKAGES-$(PTXCONF_LDD) += ldd
-
-# This is the version from the glibc we have stolen from
-LDD_VERSION	:= 2.7
-LDD_LICENSE	:= LGPL-2.1-or-later
-
-# ----------------------------------------------------------------------------
-# Target-Install
-# ----------------------------------------------------------------------------
-
-$(STATEDIR)/ldd.targetinstall:
-	@$(call targetinfo)
-
-	@$(call install_init, ldd)
-	@$(call install_fixup, ldd,PRIORITY,optional)
-	@$(call install_fixup, ldd,SECTION,base)
-	@$(call install_fixup, ldd,AUTHOR,"Robert Schwebel <r.schwebel\@pengutronix.de>")
-	@$(call install_fixup, ldd,DESCRIPTION,missing)
-
-	@$(call install_alternative, ldd, 0, 0, 0755, /usr/bin/ldd)
-
-	@$(call install_finish, ldd)
-
-	@$(call touch)
-
-# vim: syntax=make
-- 
2.47.3




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2025-09-19  5:39 ` Michael Olbrich

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