#!/bin/bash

# Copyright (C) 2005-2018 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, see

# <http://www.gnu.org/licenses/>.

#

includedir="$1"

objpfx="$2"

# To avoid long paths.

cd "$objpfx"

# OK if *.os is missing.

shopt -s nullglob

# Search all dependency files for file names in the include directory.

# There are a few system headers we are known to use.

# These include Linux kernel headers (asm*, arch, and linux),

# and Mach kernel headers (mach).

exec ${AWK} -v includedir="$includedir" '

BEGIN {

  status = 0

  exclude = "^" includedir \

    "/(.*-.*-.*/|.*-.*/|)(asm[-/]|arch|linux/|selinux/|mach/|mach_debug/|device/|hurd/(((hurd|ioctl)_types|paths)\\.h|ioctls\\.defs|ihash\\.h)|cthreads\\.h|gd|nss3/|nspr4?/|c\\+\\+/|sys/(capability|sdt(|-config))\\.h|libaudit\\.h)"

}

/^[^ ]/ && $1 ~ /.*:/ { obj = $1 }

{

  for (i = 1; i <= NF; ++i) {

    if ($i ~ ("^" includedir) && $i !~ exclude) {

      print "***", obj, "uses", $i

      status = 1

    }

  }

}

END { exit status }' */*.{o,os,oS}.d