/usr/bin/xine-config is in libxine-dev 1.1.20-2build1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 | #!/bin/sh
#
#
unset prefix
unset exec_prefix
unset args
PKG_CONFIG_PATH="`cat <<'EOF'
/usr/lib/pkgconfig
EOF
`${PKG_CONFIG_PATH:+:}$PKG_CONFIG_PATH"
export PKG_CONFIG_PATH
usage()
{
	cat <<EOF
Usage: xine-config [OPTIONS] [LIBRARIES]
Options:
	[--prefix[=DIR]]
	[--exec-prefix[=DIR]]
	[--version]
        [--libs]
	[--acflags]
	[--cflags]
	[--bindir]
	[--plugindir]
	[--datadir]
	[--scriptdir]
	[--localedir]
	[--xine-list]
	[--objcflags]
EOF
	exit $1
}
if test $# -eq 0; then
	usage 1 1>&2
fi
while test $# -gt 0; do
  case "$1" in
  -*=*) optarg="${1#--*=}" ;;
  *) optarg= ;;
  esac
  case "$1" in
    --prefix=*)
      prefix="$optarg"
      if [ "$exec_prefix" = '' ]; then
        exec_prefix="$optarg"
      fi
      ;;
    --exec-prefix=*)
      exec_prefix="$optarg"
      ;;
    --version)
      args="$args${args+ }--modversion"
      ;;
    --cflags|--libs)
      args="$args${args+ }$1"
      ;;
    --prefix|--acflags|--bindir|--plugindir|--datadir|--scriptdir|--localedir|--objcflags)
      args="$args${args+ }--variable=${1#--}"
      ;;
    --xine-list)
      args="$args${args+ }--variable=xine_list"
      ;;
    --exec-prefix)
      args="$args${args+ }--variable=exec_prefix"
      ;;
    *)
      usage 1 1>&2
      ;;
  esac
  shift
done
exec pkg-config "${prefix+--define-variable=prefix=}$prefix" \
		"${exec_prefix+--define-variable=exec_prefix=}$exec_prefix" \
		$args libxine
 |