util/mkbuildinf.pl

   1 #! /usr/bin/env perl
   2 # Copyright 2014-2017 The OpenSSL Project Authors. All Rights Reserved.
   3 #
   4 # Licensed under the Apache License 2.0 (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
   8
   9 use strict;
  10 use warnings;
  11
  12 my ($cflags, $platform) = @ARGV;
  13 $cflags = "compiler: $cflags";
  14
  15 my $date = gmtime($ENV{'SOURCE_DATE_EPOCH'} || time()) . " UTC";
  16
  17 print <<"END_OUTPUT";
  18 /*
  19  * WARNING: do not edit!
  20  * Generated by util/mkbuildinf.pl
  21  *
  22  * Copyright 2014-2017 The OpenSSL Project Authors. All Rights Reserved.
  23  *
  24  * Licensed under the Apache License 2.0 (the "License").  You may not use
  25  * this file except in compliance with the License.  You can obtain a copy
  26  * in the file LICENSE in the source distribution or at
  27  * https://www.openssl.org/source/license.html
  28  */
  29
  30 #define PLATFORM "platform: $platform"
  31 #define DATE "built on: $date"
  32
  33 /*
  34  * Generate compiler_flags as an array of individual characters. This is a
  35  * workaround for the situation where CFLAGS gets too long for a C90 string
  36  * literal
  37  */
  38 static const char compiler_flags[] = {
  39 END_OUTPUT
  40
  41 my $ctr = 0;
  42 foreach my $c (split //, $cflags) {
  43     $c =~ s|([\\'])|\\$1|;
  44     # Max 16 characters per line
  45     if  (($ctr++ % 16) == 0) {
  46         if ($ctr != 1) {
  47             print "\n";
  48         }
  49         print "    ";
  50     }
  51     print "'$c',";
  52 }
  53 print <<"END_OUTPUT";
  54 '\\0'
  55 };
  56 END_OUTPUT