1#! /bin/sh 2 3# Copyright (C) 2001, 2002, 2006, 2007, 2010, 2011 4# Free Software Foundation, Inc. 5# This file is part of GCC. 6 7# GCC is free software; you can redistribute it and/or modify 8# it under the terms of the GNU General Public License as published by 9# the Free Software Foundation; either version 3, or (at your option) 10# any later version. 11 12# GCC is distributed in the hope that it will be useful, 13# but WITHOUT ANY WARRANTY; without even the implied warranty of 14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15# GNU General Public License for more details. 16 17# You should have received a copy of the GNU General Public License 18# along with GCC; see the file COPYING3. If not see 19# <http://www.gnu.org/licenses/>. 20 21 22# Generate gcc's various configuration headers: 23# config.h, tconfig.h, bconfig.h, tm.h, libgcc_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}" >> ${output}T 43 44# A special test to ensure that build-time files don't blindly use 45# config.h. 46if test x"$output" = x"config.h"; then 47 echo "#ifdef GENERATOR_FILE" >> ${output}T 48 echo "#error config.h is for the host, not build, machine." >> ${output}T 49 echo "#endif" >> ${output}T 50fi 51 52# Define TARGET_CPU_DEFAULT if the system wants one. 53# This substitutes for lots of *.h files. 54if [ "$TARGET_CPU_DEFAULT" != "" ]; then 55 echo "#define TARGET_CPU_DEFAULT ($TARGET_CPU_DEFAULT)" >> ${output}T 56fi 57 58# Provide defines for other macros set in config.gcc for this file. 59for def in $DEFINES; do 60 echo "#ifndef $def" | sed 's/=.*//' >> ${output}T 61 echo "# define $def" | sed 's/=/ /' >> ${output}T 62 echo "#endif" >> ${output}T 63done 64 65# The first entry in HEADERS may be auto-FOO.h ; 66# it wants to be included even when not -DIN_GCC. 67# Postpone including defaults.h until after the insn-* 68# headers, so that the HAVE_* flags are available 69# when defaults.h gets included. 70postpone_defaults_h="no" 71if [ -n "$HEADERS" ]; then 72 set $HEADERS 73 case "$1" in auto-* ) 74 echo "#include \"$1\"" >> ${output}T 75 shift 76 ;; 77 esac 78 if [ $# -ge 1 ]; then 79 echo '#ifdef IN_GCC' >> ${output}T 80 for file in "$@"; do 81 if test x"$file" = x"defaults.h"; then 82 postpone_defaults_h="yes" 83 else 84 echo "# include \"$file\"" >> ${output}T 85 fi 86 done 87 echo '#endif' >> ${output}T 88 fi 89fi 90 91# If this is tm.h, now include insn-flags.h only if IN_GCC is defined 92# but neither GENERATOR_FILE nor USED_FOR_TARGET is defined. (Much of this 93# is temporary.) 94 95case $output in 96 tm.h ) 97 cat >> ${output}T <<EOF 98#if defined IN_GCC && !defined GENERATOR_FILE && !defined USED_FOR_TARGET 99# include "insn-flags.h" 100#endif 101EOF 102 ;; 103esac 104 105# If we postponed including defaults.h, add the #include now. 106if test x"$postpone_defaults_h" = x"yes"; then 107 echo "# include \"defaults.h\"" >> ${output}T 108fi 109 110# Add multiple inclusion protection guard, part two. 111echo "#endif /* ${header_guard} */" >> ${output}T 112 113# Avoid changing the actual file if possible. 114if [ -f $output ] && cmp ${output}T $output >/dev/null 2>&1; then 115 echo $output is unchanged >&2 116 rm -f ${output}T 117else 118 mv -f ${output}T $output 119fi 120 121# Touch a stamp file for Make's benefit. 122rm -f cs-$output 123echo timestamp > cs-$output 124