check

#!/bin/sh -e

# Copyright (c) 2018-2025, Firas Khalil Khana
# Distributed under the terms of the ISC License

# Contributors:
# * Luiz Antônio Rangel at Pindorama (takusuman) <luiz.antonio.rangel@outlook.com.br>

# Boilerplate that checks if it's GNU, Heirloom
# or just desist and print the current POSIX
# standard of the system.
GNUorNonGNU() {
  cmd=$1
  heirloom_ver="$(getconf HEIRLOOM_TOOLCHEST_VERSION 2>/dev/null ||
    printf 'err')"
  posix_ver=$(getconf _POSIX_VERSION)
  case "$($cmd --version 2>/dev/null || printf 'err')" in
    err) case "$heirloom_ver" in
      'err')
        if (command -v "$cmd" 2>&1 >/dev/null); then
          printf 'POSIX version: %d\n' \
            $posix_ver
        else
          printf 'Not found.\n'
          return 1
        fi
        ;;
      *)
        if [ $heirloom_ver -gt 070715 ]; then
          NG="(New Generation)"
        fi
        printf 'Heirloom Toolchest%srel. %d\n' \
          " $NG " $heirloom_ver
        ;;
    esac ;;
    *) $cmd --version 2>&1 | sed 1q | cut -d' ' -f4 ;;
  esac
}

if command -v b3sum 2>&1 >/dev/null; then
  printf 'b3sum      :: '
  b3sum --version | cut -d' ' -f2
elif command -v sha256sum 2>&1 >/dev/null; then
  printf 'sha256sum  :: '
  sha256sum --version | sed 1q | cut -d' ' -f2-
elif command -v openssl 2>&1 >/dev/null; then
  printf 'sha256sum (Open/LibreSSL)  :: '
  openssl version
fi

printf 'bash       :: '
bash --version | sed 1q | cut -d' ' -f4

printf 'bc         :: '
{ (command -v bc 2>&1 >/dev/null) && ( (bc --version ||
  getconf HEIRLOOM_TOOLCHEST_VERSION ||
  getconf _POSIX_VERSION) | sed 1q | cut -d' ' -f2) 2>/dev/null; } ||
  printf 'Not found.\n'

printf 'binutils   :: '
ld --version | sed 1q | cut -d' ' -f5

printf 'bison      :: '
bison --version | sed 1q | cut -d' ' -f4

printf 'bzip2      :: '
bzip2 --version 2>&1 </dev/null | sed 1q | cut -d' ' -f8-

printf 'coreutils  :: '
GNUorNonGNU 'ls'

printf 'diffutils  :: '
GNUorNonGNU 'diff'

printf 'findutils  :: '
GNUorNonGNU 'find'

printf 'g++        :: '
g++ --version | sed 1q | cut -d' ' -f3-

printf 'gawk       :: '
gawk --version | sed 1q | cut -d' ' -f3

printf 'gcc        :: '
gcc --version | sed 1q | cut -d' ' -f3-

printf 'git        :: '
git --version | cut -d' ' -f3

if $(ldd --version 2>&1 | grep 'musl' 2>&1 >/dev/null); then
  printf 'musl libc  :: '
  ldd --version 2>&1 | sed -n 2p | cut -d' ' -f2
elif $(ldd --version 2>&1 | grep 'GNU' 2>&1 >/dev/null); then
  printf 'glibc      :: '
  ldd --version 2>&1 | sed 1q | cut -d' ' -f4
fi

printf 'grep       :: '
GNUorNonGNU 'grep'

printf 'gzip       :: '
gzip --version | sed 1q | cut -d' ' -f2

printf 'libzstd    :: '
(printf '#include <zstd.h>\nZSTD_VERSION_STRING' |
  (gcc -E -P - 2>/dev/null || echo 'libzstd not found.') | tail -n1)

printf 'linux      :: '
uname -r

printf 'm4         :: '
m4 --version | sed 1q | cut -d' ' -f4

printf 'make       :: '
make --version | sed 1q | cut -d' ' -f3

printf 'patch      :: '
patch --version | sed 1q | cut -d' ' -f3

printf 'perl       :: '
perl -V:version | cut -d"'" -f2

printf 'sed        :: '
GNUorNonGNU 'sed'

printf 'tar        :: '
( (tar --version ||
  # Important: Heirloom tar(1) is broken for
  # the modern world since its conception.
  getconf HEIRLOOM_TOOLCHEST_VERSION ||
  getconf _POSIX_VERSION) | sed 1q | cut -d' ' -f4) 2>/dev/null

printf 'texinfo    :: '
makeinfo --version | sed 1q | cut -d' ' -f4

printf 'xz         :: '
xz --version | sed 1q | cut -d' ' -f4