1#! /bin/sh
2# Merge pkg-config macros into Emacs sources.
3# Typical usage:
4#
5#	admin/merge-pkg-config
6
7# Copyright 2014-2021 Free Software Foundation, Inc.
8
9# This file is part of GNU Emacs.
10
11# GNU Emacs is free software: you can redistribute it and/or modify
12# it under the terms of the GNU General Public License as published by
13# the Free Software Foundation, either version 3 of the License, or
14# (at your option) any later version.
15
16# GNU Emacs is distributed in the hope that it will be useful,
17# but WITHOUT ANY WARRANTY; without even the implied warranty of
18# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19# GNU General Public License for more details.
20
21# You should have received a copy of the GNU General Public License
22# along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
23
24# written by Paul Eggert
25
26{
27  # Maybe ACLOCAL_PATH is already set-up.
28  oIFS=$IFS
29  IFS=:
30  for dir in $ACLOCAL_PATH ''; do
31    test -n "$dir" && test -r "$dir/pkg.m4" && break
32  done
33  IFS=$oIFS
34
35  test -n "$dir"
36} || {
37  # Use the pkg.m4 installed where aclocal knows about it.
38  # Maybe we are running our own aclocal, which doesn't know where
39  # the standard pkg.m4 is installed, so try running all the
40  # aclocal programs in our PATH.
41  oIFS=$IFS
42  IFS=:
43  for dir in $PATH ''; do
44    if test -n "$dir" && test -x "$dir/aclocal"; then
45      dir=$("$dir/aclocal" --print-ac-dir) && test -r "$dir/pkg.m4" && break
46    fi
47  done
48  IFS=$oIFS
49
50  test -n "$dir"
51} || {
52  printf >&2 '%s\n' "$0: cannot find pkg.m4"
53  exit 1
54}
55
56test -d m4 || {
57  printf >&2 '%s\n' "$0: please run this command in the main source directory"
58  exit 1
59}
60
61printf >&2 '%s\n' "$0: copying $dir/pkg.m4 to m4/pkg.m4"
62
63cp $dir/pkg.m4 m4
64