gcc/genversion.cc

   1 /* Generate version strings. See gcov-io.h for
   2    description of how the version string is generated.
   3    Copyright (C) 2002-2023 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 (void)
  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 basever[] = BASEVER;
  38   char *ptr = basever;
  39
  40   major = strtoul (ptr, &ptr, 10);
  41
  42   if (*ptr == '.')
  43     minor = strtoul (ptr + 1, 0, 10);
  44
  45   /* For releases the development phase is an empty string, for
  46      prerelease versions on a release branch it is "prerelease".
  47      Consider both equal as patch-level releases do not change
  48      the GCOV version either.
  49      On the trunk the development phase is "experimental".  */
  50   phase = DEVPHASE[0];
  51   if (phase == '\0'
  52       || strcmp (DEVPHASE, "prerelease") == 0)
  53     phase = '*';
  54
  55   v[0] = (major / 10) + 'A';
  56   v[1] = (major % 10) + '0';
  57   v[2] = minor + '0';
  58   v[3] = phase;
  59
  60   for (ix = 0; ix != 4; ix++)
  61     version = (version << 8) | v[ix];
  62
  63   printf ("#ifndef VERSION_H\n");
  64   printf ("#define VERSION_H\n\n");
  65   printf ("/* Generated automatically by genversion.  */\n");
  66   printf ("\n");
  67   printf ("#define GCC_major_version %lu\n\n", major);
  68
  69   printf ("/* The complete version string, assembled from several pieces.\n"
  70           "BASEVER, DATESTAMP, DEVPHASE, and REVISION are defined by the\n"
  71           "Makefile.  */\n\n");
  72
  73   printf ("#define version_string \"" BASEVER DATESTAMP DEVPHASE REVISION "\"\n");
  74   printf ("#define pkgversion_string \"" PKGVERSION "\"\n\n");
  75
  76   printf ("/* This is the location of the online document giving instructions for\n"
  77      "reporting bugs.  If you distribute a modified version of GCC,\n"
  78      "please configure with --with-bugurl pointing to a document giving\n"
  79      "instructions for reporting bugs to you, not us.  (You are of course\n"
  80      "welcome to forward us bugs reported to you, if you determine that\n"
  81      "they are not bugs in your modifications.)  */\n\n");
  82   printf ("#define bug_report_url \"" BUGURL "\"\n\n");
  83
  84   printf ("#define GCOV_VERSION ((gcov_unsigned_t)0x%08x)  /* %.4s */\n",
  85           version, v);
  86   printf ("\n#endif /* VERSION_H */\n");
  87
  88   return 0;
  89 }