gcc/gcov-iov.c

   1 /* Generate gcov version string from version.c. See gcov-io.h for
   2    description of how the version string is generated.
   3    Copyright (C) 2002-2017 Free Software Foundation, Inc.
   4    Contributed by Nathan Sidwell <nathan@codesourcery.com>
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify it under
   9 the terms of the GNU General Public License as published by the Free
  10 Software Foundation; either version 3, or (at your option) any later
  11 version.
  12
  13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16 for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  21
  22 #include "bconfig.h"
  23 #include "system.h"
  24
  25 /* Command line arguments are the base GCC version and the development
  26    phase (the latter may be an empty string).  */
  27
  28 int
  29 main (int argc, char **argv)
  30 {
  31   unsigned int version = 0;
  32   unsigned char v[4];
  33   unsigned int ix;
  34   unsigned long major;
  35   unsigned long minor = 0;
  36   char phase = 0;
  37   char *ptr;
  38
  39   if (argc != 3)
  40     {
  41       fprintf (stderr, "usage: %s 'version' 'phase'\n", argv[0]);
  42       return 1;
  43     }
  44
  45   ptr = argv[1];
  46   major = strtoul (ptr, &ptr, 10);
  47
  48   if (*ptr == '.')
  49     minor = strtoul (ptr + 1, 0, 10);
  50
  51   /* For releases the development phase is an empty string, for
  52      prerelease versions on a release branch it is "prerelease".
  53      Consider both equal as patch-level releases do not change
  54      the GCOV version either.
  55      On the trunk the development phase is "experimental".  */
  56   phase = argv[2][0];
  57   if (phase == '\0'
  58       || strcmp (argv[2], "prerelease") == 0)
  59     phase = '*';
  60
  61   v[0] = (major / 10) + 'A';
  62   v[1] = (major % 10) + '0';
  63   v[2] = minor + '0';
  64   v[3] = phase;
  65
  66   for (ix = 0; ix != 4; ix++)
  67     version = (version << 8) | v[ix];
  68
  69   printf ("/* Generated automatically by the program `%s'\n", argv[0]);
  70   printf ("   from `%s (%lu %lu) and %s (%c)'.  */\n",
  71           argv[1], major, minor, argv[2], phase);
  72   printf ("\n");
  73   printf ("#define GCOV_VERSION ((gcov_unsigned_t)0x%08x)  /* %.4s */\n",
  74           version, v);
  75
  76   return 0;
  77 }