text: # Copyright (C) 1991-1999,2002,2004,2005 Free Software Foundation, Inc.
  # This file is part of the GNU C Library.
  
  # The GNU C Library is free software; you can redistribute it and/or
  # modify it under the terms of the GNU Lesser General Public
  # License as published by the Free Software Foundation; either
  # version 2.1 of the License, or (at your option) any later version.
  
  # The GNU C Library is distributed in the hope that it will be useful,
  # but WITHOUT ANY WARRANTY; without even the implied warranty of
  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  # Lesser General Public License for more details.
  
  # You should have received a copy of the GNU Lesser General Public
  # License along with the GNU C Library; if not, write to the Free
  # Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  # 02111-1307 USA.
  
  # errno.texi contains lines like:
  # @comment errno.h
  # @comment POSIX.1: Function not implemented
  # @deftypevr Macro int ENOSYS
  # @comment errno 78
  # Descriptive paragraph...
  # @end deftypevr
  
  BEGIN {
  
      # Here we list the E* names that might be duplicate names for the
      # same integer value on some systems.  This causes the code below
      # to generate ``#if defined (ALIAS) && ALIAS != ORIGINAL'' in the code,
      # so the output does not presume that these are in fact aliases.
      # We list here all the known potential cases on any system,
      # so that the C source we produce will do the right thing based
      # on the actual #define'd values it's compiled with.
      alias["EWOULDBLOCK"]= "EAGAIN";
      alias["EDEADLOCK"]	= "EDEADLK";
      alias["ENOTSUP"]	= "EOPNOTSUPP";
  
      print "/* This file is generated from errno.texi by errlist.awk.  */"
      print "";
      print "#include <errno.h>";
      print "#include <libintl.h>";
      print "";
      print "#ifndef ERR_REMAP";
      print "# define ERR_REMAP(n) n";
      print "#endif";
      print "";
  
      print "#if !defined EMIT_ERR_MAX && !defined ERRLIST_NO_COMPAT";
      print "# include <errlist-compat.h>";
      print "#endif";
      print "#ifdef ERR_MAX";
      print "# define ERRLIST_SIZE ERR_MAX + 1";
      print "#else"
      print "# define ERRLIST_SIZE";
      print "#endif";
  
      print "const char *const _sys_errlist_internal[ERRLIST_SIZE] =";
      print "  {";
      print "    [0] = N_(\"Success\"),"
    }
  
  $1 == "@comment" && $2 == "errno.h" { errnoh=1; next }
  errnoh == 1 && $1 == "@comment" \
    {
      ++errnoh;
      etext = $3;
      for (i = 4; i <= NF; ++i)
        etext = etext " " $i;
      next;
    }
  errnoh == 2 && $1 == "@deftypevr" && $2 == "Macro" && $3 == "int" \
    {
      e = $4; errnoh++; next;
    }
  errnoh == 3 && $1 == "@comment" && $2 == "errno" \
    {
      errno = $3 + 0;
      if (alias[e])
        printf "#if defined (%s) && %s != %s\n", e, e, alias[e];
      else
        printf "#ifdef %s\n", e;
      errnoh = 4;
      desc="";
      next;
    }
  errnoh == 4 && $1 == "@end" && $2 == "deftypevr" \
    {
      printf "/*%s */\n", desc;
      printf "    [ERR_REMAP (%s)] = N_(\"%s\"),\n", e, etext;
      printf "# if %s > ERR_MAX\n", e;
      print  "# undef ERR_MAX";
      printf "# define ERR_MAX %s\n", e;
      print  "# endif";
      print "#endif";
      errnoh = 0;
      next;
    }
  errnoh == 4 \
    {
      # This magic tag in C comments gets them copied into libc.pot.
      desc = desc "\nTRANS " $0; next
    }
  { errnoh=0 }
  END {
    print "  };";
    print "";
    print "#define NERR \\";
    print "  (sizeof _sys_errlist_internal / sizeof _sys_errlist_internal [0])";
    print "const int _sys_nerr_internal = NERR;"
    print "";
    print "#if !defined NOT_IN_libc && !ERRLIST_NO_COMPAT";
    print "# include <errlist-compat.c>";
    print "#endif";
    print "";
    print "#ifdef EMIT_ERR_MAX";
    print "void dummy (void)"
    print "{ asm volatile (\" @@@ %0 @@@ \" : : \"i\" (ERR_REMAP (ERR_MAX))); }"
    print "#endif";
  }
  