This script should help to find such packages

fix_glibcxx_3.4.9.sh (text/plain), 5.95 KB, created by Nao Nakashima on 2009-01-13 22:27:30 UTC

#!/bin/bash

# fix_glibcxx_3.4.9.sh: Fix broken packages after gcc downgrade.
# Original Author: Nao Nakashima

. /etc/init.d/functions.sh

# You need to adjust this if you have another error than "libstdc++.so.6: version `GLIBCXX_3.4.9' not found".
# See Bug #254655 for details
QUERY='GLIBCXX_3\.4\.9'

EXCLUDE_PACKAGES="sys-devel/gcc"
COMMAND="emerge -1"
#COMMAND=echo

# temp files
TMP_DIR=/tmp
ALL_LIBS_FILE="${TMP_DIR}/01_all-libs.fixglibcxx"
ALL_BINS_FILE="${TMP_DIR}/01_all-bins.fixglibcxx"
BROKEN_FILE="${TMP_DIR}/02_broken.fixglibcxx"
PACKAGES_FILE="${TMP_DIR}/03_packages.fixglibcxx"
EBUILDS_FILE="${TMP_DIR}/04_ebuilds.fixglibcxx"

# paths. change this if you have something else, autodetect currently not implemented:(
BIN_DIR="/bin /sbin /usr/bin /usr/sbin"
LIB_DIR="/lib* /usr/lib*"

# if you don`t have qfile, simply ignore this line or emerge app-portage/portage-utils
QFILE_COMMAND="/usr/bin/qfile"
SCAN_CMD="/usr/bin/readelf -V"
THIS_NAME="$(basename $0)"
#############End of environment configuration###########

print_usage() {
cat << EOF
Usage: $THIS_NAME [--help] [--keep-old] [--pretend] [--] [EMERGE_OPTIONS]

Fix packages after switching to another gcc version.

  --help, -h      Display help
  --keep-old      Do not delete temporary files from previous run (if any)
  --pretend, -p   Do a trial run without actually emerging anything
                  (also passed to emerge command)
EOF
}


# copypast from revdep-rebuild
get_file_owner() {
  local IFS=$'\n'
  # ${*/%/ } adds a space to the end of each object name to prevent false
  # matches, for example /usr/bin/dia matching /usr/bin/dialog (bug #196460).
  find -L /var/db/pkg -name CONTENTS -print0 |
    xargs -0 grep -Fl "${*/%/ }" |
    sed 's:/var/db/pkg/\(.*\)/CONTENTS:\1:'
}

# qfile is faster, but may not be present on the target system
get_file_owner_from_file() {
  local package

  if [ -x $QFILE_COMMAND ]; then
    qfile -Cqef "$1" | uniq
  else
    ewarn "Using slow revdep-rebuild method, emerge app-portage/portage-utils to go faster"
    while read package; do
      get_file_owner $package 
    done < "$1" | sort | uniq
  fi
}

# copypast from revdep-rebuild
assign_packages_to_ebuilds() {
  local EXACT_PKG
  local PKG
  local SLOT
  einfo 'Assigning packages to ebuilds...'
  if [ "$KEEPOLD" = "1" -a -r "$EBUILDS_FILE" ]; then
    einfo "Using cached $EBUILDS_FILE"
    cat "$EBUILDS_FILE"
  else
    while read EXACT_PKG; do
      # Get the slot
      PKG="${EXACT_PKG%%-r[[:digit:]]*}"
      PKG="${PKG%-*}"
      SLOT=$(</var/db/pkg/$EXACT_PKG/SLOT)
      echo "$PKG:$SLOT"
    done < "$PACKAGES_FILE" | tee "$EBUILDS_FILE"
    einfo "Generated new $EBUILDS_FILE"
  fi
  echo
}

cleanup() {
  rm -f $ALL_LIBS_FILE $ALL_BINS_FILE $BROKEN_FILE $PACKAGES_FILE 2>/dev/null
}

# Parsing options
while true; do
  case "$1" in
    --keep-old) KEEPOLD=1 ; shift;;
    --pretend|-p) PRETEND=1 ; shift;;
    --help|-h) print_usage ; exit ;;
    --) shift; break;;
    *) break;;
  esac
done

EMERGE_ARGS="$*"

# If the user is not super, add --pretend
if [ "$PRETEND" \!= "1" -a $UID -ne 0 ]; then
  ewarn "You are not superuser. Adding --pretend to emerge options."
  PRETEND=1
fi

if [ "$PRETEND" = "1" ]; then EMERGE_ARGS="--pretend $EMERGE_ARGS"; fi

if [ "$KEEPOLD" \!= "1" ]; then
  cleanup
fi

# Step 1: libraries and binaries
einfo "Collecting libraries..." 
if [ "$KEEPOLD" = "1" -a -r "$ALL_LIBS_FILE" ]; then
  einfo "Using cached $ALL_LIBS_FILE" 
else
  if [ "$KEEPOLD" = "1" -a \! -r "$ALL_LIBS_FILE" ]; then
    KEEPOLD=0
  fi
  find $LIB_DIR -regex '.*\.so\(\.[0-9]+\)*' -type f > $ALL_LIBS_FILE 2>/dev/null
  einfo "Generated new $ALL_LIBS_FILE"
fi
echo 

einfo "Collecting binaries..." 
if [ "$KEEPOLD" = "1" -a -r "$ALL_BINS_FILE" ]; then
  einfo "Using cached $ALL_BINS_FILE" >&2
else
  if [ "$KEEPOLD" = "1" -a \! -r "$ALL_BINS_FILE" ]; then
    KEEPOLD=0
  fi
  find $BIN_DIR -type f > $ALL_BINS_FILE 2>/dev/null
  einfo "Generated new $ALL_BINS_FILE"
fi
echo

# Step 2: Searching broken files
einfo "Searching binaries and libraries that uses $QUERY ..." 
if [ "$KEEPOLD" = "1" -a -r "$BROKEN_FILE" ]; then
  einfo "Using cached $BROKEN_FILE" 
  cat $BROKEN_FILE >&2
else
  if [ "$KEEPOLD" = "1" -a \! -r "$BROKEN_FILE" ]; then
    KEEPOLD=0
  fi
  ALL_COUNT=`cat $ALL_BINS_FILE $ALL_LIBS_FILE | wc -l`
  CURR_COUNT=0
  cat $ALL_LIBS_FILE $ALL_BINS_FILE |\
    while read FILE; do
      PER=$(($CURR_COUNT*100/$ALL_COUNT))
      if [ "$(($PER<10))" = 1 ]; then PER=' '$PER ; fi
      echo -ne "\r[ $PER% ] " >&2
      CURR_COUNT=$(($CURR_COUNT+1))
      $SCAN_CMD $FILE 2>/dev/null | grep -q "$QUERY" && echo $FILE 
    done | tee $BROKEN_FILE 
    echo
    einfo "Generated new $BROKEN_FILE"
    echo 
fi
  
if [ \! -s "$BROKEN_FILE" ]; then
  einfo "No broken files found" 
  exit
fi
echo 

# Step 3: calculate packages list
einfo "Assigning files to packages..." 
if [ "$KEEPOLD" = "1" -a -r "$PACKAGES_FILE" ]; then
  einfo "Using cached $PACKAGES_FILE" 
  cat $PACKAGES_FILE | awk '{print "="$1}'
else
  if [ "$KEEPOLD" = "1" -a \! -r "$PACKAGES_FILE" ]; then
    KEEPOLD=0
  fi
  get_file_owner_from_file $BROKEN_FILE |\
    grep -v "$EXCLUDE_PACKAGES" | tee $PACKAGES_FILE | awk '{print "="$1}'
  einfo "Generated new $PACKAGES_FILE"
fi
echo

# Step 4: Strip out version information but respect SLOT
assign_packages_to_ebuilds

einfo "Executing emerge..." 
cat $EBUILDS_FILE | xargs echo $COMMAND $EMERGE_ARGS
cat $EBUILDS_FILE | xargs $COMMAND $EMERGE_ARGS
C=$?
echo

if [ "$PRETEND" = "1" -a $C -eq 0 ]; then
  einfo "All ok. Now you can remove --pretend from options and rerun $THIS_NAME with --keep-old" 
elif [ $C -eq 0 ]; then
  einfo "$THIS_NAME completed successfully. Removing temporary files."
  cleanup
else
  ewarn "While executing emerge, some errors has occurred."
  ewarn "This may be because script currently does not calculate a correct package order."
  ewarn "Please rerun $THIS_NAME  one more time and if this not help, run emerge manually, but without problem package in it."
  cat $EBUILDS_FILE | xargs ewarn $COMMAND $EMERGE_ARGS
fi