2 # Copyright 2018 The OpenSSL Project Authors. All Rights Reserved.
4 # Licensed under the OpenSSL license (the "License"). You may not use
5 # this file except in compliance with the License. You can obtain a copy
6 # in the file LICENSE in the source distribution or at
7 # https://www.openssl.org/source/license.html
12 use File::Compare qw(compare_text);
14 my $buildfile = $config{build_file};
15 my $buildfile_new = "$buildfile-$$";
16 my $depext = $target{dep_extension} || ".d";
20 map { (my $x = $_) =~ s|\.o$|$depext|; $x; }
21 grep { $unified_info{sources}->{$_}->[0] =~ /\.cc?$/ }
22 keys %{$unified_info{sources}};
24 open IBF, $buildfile or die "Trying to read $buildfile: $!\n";
25 open OBF, '>', $buildfile_new or die "Trying to write $buildfile_new: $!\n";
28 last if /^# DO NOT DELETE THIS LINE/;
29 print OBF or die "$!\n";
34 print OBF "# DO NOT DELETE THIS LINE -- make depend depends on it.\n";
37 open IBF,$_ or die "Trying to read $_: $!\n";
39 print OBF or die "$!\n";
45 if (compare_text($buildfile_new, $buildfile) != 0) {
46 rename $buildfile_new, $buildfile
47 or die "Trying to rename $buildfile_new -> $buildfile: $!\n";
49 # On VMS, we want to remove all generations of this file, in case there are
51 while (unlink $buildfile_new) {}