1#!/bin/bash
2# Copyright (C) 2005-2022 Free Software Foundation, Inc.
3# This file is part of the GNU C Library.
4
5# The GNU C Library is free software; you can redistribute it and/or
6# modify it under the terms of the GNU Lesser General Public
7# License as published by the Free Software Foundation; either
8# version 2.1 of the License, or (at your option) any later version.
9
10# The GNU C Library is distributed in the hope that it will be useful,
11# but WITHOUT ANY WARRANTY; without even the implied warranty of
12# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13# Lesser General Public License for more details.
14
15# You should have received a copy of the GNU Lesser General Public
16# License along with the GNU C Library; if not, see
17# <https://www.gnu.org/licenses/>.
18#
19includedir="$1"
20objpfx="$2"
21
22# To avoid long paths.
23cd "$objpfx"
24
25# OK if *.os is missing.
26shopt -s nullglob
27
28# Search all dependency files for file names in the include directory.
29# There are a few system headers we are known to use.
30# These include Linux kernel headers (asm*, arch, and linux),
31# and Mach kernel headers (mach).
32exec ${AWK} -v includedir="$includedir" '
33BEGIN {
34  status = 0
35  exclude = "^" includedir \
36    "/(.*-.*-.*/|.*-.*/|)(asm[-/]|arch|linux/|selinux/|mach/|mach_debug/|device/|hurd/(((hurd|ioctl)_types|paths)\\.h|ioctls\\.defs|ihash\\.h|version\\.h)|gd|nss3/|nspr4?/|c\\+\\+/|sys/(capability|sdt(|-config))\\.h|libaudit\\.h)"
37}
38/^[^ ]/ && $1 ~ /.*:/ { obj = $1 }
39{
40  for (i = 1; i <= NF; ++i) {
41    if ($i ~ ("^" includedir) && $i !~ exclude) {
42      print "***", obj, "uses", $i
43      status = 1
44    }
45  }
46}
47END { exit status }' */*.{o,os,oS}.d
48