[Slackbuilds-users] tracking down SBo "dependencies"

[Shahab Vahedi]

Jim,

Would a script like the one at the bottom of this email point you
toward the right package(s)?

I have to warn you it roughly took 11 minutes to finish on my laptop
with 1680 packages installed:

$ time ./depcheck libacl.so

  acl-2.3.2-x86_64-1: /usr/bin/chacl
  cdrtools-3.02a09-x86_64-1: /usr/bin/isoinfo
  coreutils-9.4-x86_64-1: /bin/cp
  ...
  vim-gvim-9.1.0136-x86_64-1: /usr/bin/gvim
  xorriso-1.5.6.pl02-x86_64-1: /usr/bin/xorriso

  real    11m16.558s
  ...

----------------------------------8<------------------------------------
#! /bin/bash -
# depcheck -- List Slackware packages that directly rely on a library.

# shellcheck disable=SC2312

readonly lib="$1"

sanity_check()
{
  if test -z "${lib}"
  then
    echo -e "\nProvide one library name as an argument. Example:\n"
    echo "  $ $0 libacl.so"
    exit 1
  fi

  if ! command -v "parallel" > /dev/null 2>&1
  then
      echo "GNU Parallel is necessary for this tool."
      exit 1
  fi
}

process_package()
{
  _lib="$1"
  _pkg="$2"
  grep -e '^[^ ]\+/.\+' "${_pkg}" | while read -r fl
  do
    fl="/${fl}"
    if test -f "${fl}" && file --brief --mime-type "${fl}" |
                           grep -q "x-executable\|x-sharedlib"
    then
      if readelf -d "${fl}" 2>/dev/null |
          grep -i -q "shared library: \[${_lib}"
      then
        echo "${_pkg##*/}: ${fl}"
        # no need to go through other files of this package
        break
      fi
    fi
  done
}
export -f process_package

sanity_check
SHELL=$(type -p bash)
find /var/lib/pkgtools/packages -type f | sort |
  parallel process_package "${lib}"
----------------------------------8<------------------------------------

Cheers,
Shahab