gcc/mkconfig.sh

   1 #! /bin/sh
   2
   3 # Copyright (C) 2001, 2002 Free Software Foundation, Inc.
   4 # This file is part of GCC.
   5
   6 # GCC is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 2, or (at your option)
   9 # any later version.
  10
  11 # GCC is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15
  16 # You should have received a copy of the GNU General Public License
  17 # along with GCC; see the file COPYING.  If not, write to
  18 # the Free Software Foundation, 59 Temple Place - Suite 330,
  19 # Boston MA 02111-1307, USA.
  20
  21
  22 # Generate gcc's various configuration headers:
  23 # config.h, tconfig.h, bconfig.h, tm.h, and tm_p.h.
  24 # $1 is the file to generate.  DEFINES, HEADERS, and possibly
  25 # TARGET_CPU_DEFAULT are expected to be set in the environment.
  26
  27 if [ -z "$1" ]; then
  28     echo "Usage: DEFINES='list' HEADERS='list' \\" >&2
  29     echo "  [TARGET_CPU_DEFAULT='default'] mkconfig.sh FILE" >&2
  30     exit 1
  31 fi
  32
  33 output=$1
  34 rm -f ${output}T
  35
  36 # Define TARGET_CPU_DEFAULT if the system wants one.
  37 # This substitutes for lots of *.h files.
  38 if [ "$TARGET_CPU_DEFAULT" != "" ]; then
  39     echo "#define TARGET_CPU_DEFAULT ($TARGET_CPU_DEFAULT)" >> ${output}T
  40 fi
  41
  42 # Provide defines for other macros set in config.gcc for this file.
  43 for def in $DEFINES; do
  44     echo "#ifndef $def" | sed 's/=.*//' >> ${output}T
  45     echo "# define $def" | sed 's/=/ /' >> ${output}T
  46     echo "#endif" >> ${output}T
  47 done
  48
  49 # The first entry in HEADERS may be auto-host.h or auto-build.h;
  50 # it wants to be included even when not -DIN_GCC.
  51 if [ -n "$HEADERS" ]; then
  52     set $HEADERS
  53     case "$1" in auto-* )
  54         echo "#include \"$1\"" >> ${output}T
  55         shift
  56         ;;
  57     esac
  58     if [ $# -ge 1 ]; then
  59         echo '#ifdef IN_GCC' >> ${output}T
  60         for file in "$@"; do
  61             echo "# include \"$file\"" >> ${output}T
  62         done
  63         echo '#endif' >> ${output}T
  64     fi
  65 fi
  66
  67 # If this is tconfig.h, now define USED_FOR_TARGET.  If this is tm.h,
  68 # now include insn-constants.h and insn-flags.h only if IN_GCC is
  69 # defined but neither GENERATOR_FILE nor USED_FOR_TARGET is defined.
  70 # (Much of this is temporary.)
  71
  72 case $output in
  73     tconfig.h )
  74         cat >> ${output}T <<EOF
  75 #define USED_FOR_TARGET
  76 EOF
  77     ;;
  78     tm.h )
  79         cat >> ${output}T <<EOF
  80 #if defined IN_GCC && !defined GENERATOR_FILE && !defined USED_FOR_TARGET
  81 # include "insn-constants.h"
  82 # include "insn-flags.h"
  83 #endif
  84 EOF
  85     ;;
  86 esac
  87
  88 # Avoid changing the actual file if possible.
  89 if [ -f $output ] && cmp ${output}T $output >/dev/null 2>&1; then
  90     echo $output is unchanged >&2
  91     rm -f ${output}T
  92 else
  93     mv -f ${output}T $output
  94 fi
  95
  96 # Touch a stamp file for Make's benefit.
  97 rm -f cs-$output
  98 echo timestamp > cs-$output