mkconfig.sh revision 132718 
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
27if [ -z "$1" ]; then
28    echo "Usage: DEFINES='list' HEADERS='list' \\" >&2
29    echo "  [TARGET_CPU_DEFAULT='default'] mkconfig.sh FILE" >&2
30    exit 1
31fi
32
33output=$1
34rm -f ${output}T
35
36# This converts a file name into header guard macro format.
37hg_sed_expr='y,abcdefghijklmnopqrstuvwxyz./,ABCDEFGHIJKLMNOPQRSTUVWXYZ__,'
38header_guard=GCC_`echo ${output} | sed -e ${hg_sed_expr}`
39
40# Add multiple inclusion protection guard, part one.
41echo "#ifndef ${header_guard}" >> ${output}T
42echo "#define ${header_guard}" >> ${output}T
43
44# Define TARGET_CPU_DEFAULT if the system wants one.
45# This substitutes for lots of *.h files.
46if [ "$TARGET_CPU_DEFAULT" != "" ]; then
47    echo "#define TARGET_CPU_DEFAULT ($TARGET_CPU_DEFAULT)" >> ${output}T
48fi
49
50# Provide defines for other macros set in config.gcc for this file.
51for def in $DEFINES; do
52    echo "#ifndef $def" | sed 's/=.*//' >> ${output}T
53    echo "# define $def" | sed 's/=/ /' >> ${output}T
54    echo "#endif" >> ${output}T
55done
56
57# The first entry in HEADERS may be auto-host.h or auto-build.h;
58# it wants to be included even when not -DIN_GCC.
59if [ -n "$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
73fi
74
75# If this is tconfig.h, now define USED_FOR_TARGET.  If this is tm.h,
76# now include insn-constants.h and insn-flags.h only if IN_GCC is
77# defined but neither GENERATOR_FILE nor USED_FOR_TARGET is defined.
78# (Much of this is temporary.)
79
80case $output in
81    tconfig.h )
82	cat >> ${output}T <<EOF
83#define USED_FOR_TARGET
84EOF
85    ;;
86    tm.h )
87        cat >> ${output}T <<EOF
88#if defined IN_GCC && !defined GENERATOR_FILE && !defined USED_FOR_TARGET
89# include "insn-constants.h"
90# include "insn-flags.h"
91#endif
92EOF
93    ;;
94esac
95
96# Add multiple inclusion protection guard, part two.
97echo "#endif /* ${header_guard} */" >> ${output}T
98
99# Avoid changing the actual file if possible.
100if [ -f $output ] && cmp ${output}T $output >/dev/null 2>&1; then
101    echo $output is unchanged >&2
102    rm -f ${output}T
103else
104    mv -f ${output}T $output
105fi
106
107# Touch a stamp file for Make's benefit.
108rm -f cs-$output
109echo timestamp > cs-$output
110