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, 51 Franklin Street, Fifth Floor,
  19 # Boston MA 02110-1301, 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 # This converts a file name into header guard macro format.
  37 hg_sed_expr='y,abcdefghijklmnopqrstuvwxyz./,ABCDEFGHIJKLMNOPQRSTUVWXYZ__,'
  38 header_guard=GCC_`echo ${output} | sed -e ${hg_sed_expr}`
  39
  40 # Add multiple inclusion protection guard, part one.
  41 echo "#ifndef ${header_guard}" >> ${output}T
  42 echo "#define ${header_guard}" >> ${output}T
  43
  44 # Define TARGET_CPU_DEFAULT if the system wants one.
  45 # This substitutes for lots of *.h files.
  46 if [ "$TARGET_CPU_DEFAULT" != "" ]; then
  47     echo "#define TARGET_CPU_DEFAULT ($TARGET_CPU_DEFAULT)" >> ${output}T
  48 fi
  49
  50 # Provide defines for other macros set in config.gcc for this file.
  51 for def in $DEFINES; do
  52     echo "#ifndef $def" | sed 's/=.*//' >> ${output}T
  53     echo "# define $def" | sed 's/=/ /' >> ${output}T
  54     echo "#endif" >> ${output}T
  55 done
  56
  57 # The first entry in HEADERS may be auto-FOO.h ;
  58 # it wants to be included even when not -DIN_GCC.
  59 if [ -n "$HEADERS" ]; then
  60     set $HEADERS
  61     case "$1" in auto-* )
  62         echo "#include \"$1\"" >> ${output}T
  63         shift
  64         ;;
  65     esac
  66     if [ $# -ge 1 ]; then
  67         echo '#ifdef IN_GCC' >> ${output}T
  68         for file in "$@"; do
  69             echo "# include \"$file\"" >> ${output}T
  70         done
  71         echo '#endif' >> ${output}T
  72     fi
  73 fi
  74
  75 # If this is tm.h, now include insn-constants.h and insn-flags.h only
  76 # if IN_GCC is defined but neither GENERATOR_FILE nor USED_FOR_TARGET
  77 # is defined.  (Much of this is temporary.)
  78
  79 case $output in
  80     tm.h )
  81         cat >> ${output}T <<EOF
  82 #if defined IN_GCC && !defined GENERATOR_FILE && !defined USED_FOR_TARGET
  83 # include "insn-constants.h"
  84 # include "insn-flags.h"
  85 #endif
  86 EOF
  87     ;;
  88 esac
  89
  90 # Add multiple inclusion protection guard, part two.
  91 echo "#endif /* ${header_guard} */" >> ${output}T
  92
  93 # Avoid changing the actual file if possible.
  94 if [ -f $output ] && cmp ${output}T $output >/dev/null 2>&1; then
  95     echo $output is unchanged >&2
  96     rm -f ${output}T
  97 else
  98     mv -f ${output}T $output
  99 fi
 100
 101 # Touch a stamp file for Make's benefit.
 102 rm -f cs-$output
 103 echo timestamp > cs-$output