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, 2003, 2005, 2007, 2010, 2012
   4    Free Software Foundation, Inc.
   5    Contributed by Nathan Sidwell <nathan@codesourcery.com>
   6
   7 This file is part of GCC.
   8
   9 GCC is free software; you can redistribute it and/or modify it under
  10 the terms of the GNU General Public License as published by the Free
  11 Software Foundation; either version 3, or (at your option) any later
  12 version.
  13
  14 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  15 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  16 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  17 for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with GCC; see the file COPYING3.  If not see
  21 <http://www.gnu.org/licenses/>.  */
  22
  23 #include "bconfig.h"
  24 #include "system.h"
  25
  26 /* Command line arguments are the base GCC version and the development
  27    phase (the latter may be an empty string).  */
  28
  29 int
  30 main (int argc, char **argv)
  31 {
  32   unsigned int version = 0;
  33   unsigned char v[4];
  34   unsigned int ix;
  35   unsigned long major;
  36   unsigned long minor = 0;
  37   char phase = 0;
  38   char *ptr;
  39
  40   if (argc != 3)
  41     {
  42       fprintf (stderr, "usage: %s 'version' 'phase'\n", argv[0]);
  43       return 1;
  44     }
  45
  46   ptr = argv[1];
  47   major = strtoul (ptr, &ptr, 10);
  48
  49   if (*ptr == '.')
  50     minor = strtoul (ptr + 1, 0, 10);
  51
  52   /* For releases the development phase is an empty string, for
  53      prerelease versions on a release branch it is "prerelease".
  54      Consider both equal as patch-level releases do not change
  55      the GCOV version either.
  56      On the trunk the development phase is "experimental".  */
  57   phase = argv[2][0];
  58   if (phase == '\0'
  59       || strcmp (argv[2], "prerelease") == 0)
  60     phase = '*';
  61
  62   v[0] = (major < 10 ? '0' : 'A' - 10) + major;
  63   v[1] = (minor / 10) + '0';
  64   v[2] = (minor % 10) + '0';
  65   v[3] = phase;
  66
  67   for (ix = 0; ix != 4; ix++)
  68     version = (version << 8) | v[ix];
  69
  70   printf ("/* Generated automatically by the program `%s'\n", argv[0]);
  71   printf ("   from `%s (%lu %lu) and %s (%c)'.  */\n",
  72           argv[1], major, minor, argv[2], phase);
  73   printf ("\n");
  74   printf ("#define GCOV_VERSION ((gcov_unsigned_t)0x%08x)  /* %.4s */\n",
  75           version, v);
  76
  77   return 0;
  78 }